Jobs at Djinni

Our AI QA team provides end-to-end testing solutions of complex AI-driven features, hardware sensors supporting AI functionality, and large-scale cloud and embedded systems. We bring proven experience in both hardware and software product development, with a strong focus on motion detection technologies.
We specialize in building and executing multi-layered automation frameworks across integration, system, and acceptance levels, ensuring comprehensive test coverage, continuous product state monitoring, and stable product releases.
The team contributes to the development of AI features and embedded systems.

We are looking for a QA Engineer with solid experience in software testing, preferably with exposure to embedded systems. In this role, you will be responsible for executing manual tests as well as expanding and maintaining our existing automation coverage.

Responsibilities:

Define requirements for test environments, data, resources, and tools
Create and maintain traceability matrices
Provide accurate high-level and detailed estimations for assigned activities and features
Develop and execute Test Plans in line with standards
Ensure automated test coverage (execution, analysis, reporting)
Contribute to the development and expansion of the existing Python test framework
Interpret and apply product and project metrics (technical and quality)
Prepare Test Summary Reports for features and programs in line with standards
Monitor, update, and implement new QA approaches based on standards (ISO/IEC/IEEE, ISTQB, RST)
Apply Quality Management principles (Planning, Assurance, Control, Continuous Improvement)

Skills:

5+ years of experience as a QA engineer

Basic knowledge in computer vision and machine learning
Understanding and hands-on experience with embedded systems testing
Good Automation skills with Python
Hands-on experience in UNIX/Linux, including CLI navigation and use of regular expressions
Experience with databases and SQL
Experience with CI tools (Jenkins)

Nice to have:

Basic experience with Raspberry Pi
Hands-on experience in Bash scripting
Familiarity with AWS services
Practical experience with API testing (CRUD operations, debugging with Postman or similar tools)
Experience in mobile testing
ISTQB Certification

We offer multiple benefits that include

• The environment of equal opportunities, transparent and value-based corporate culture, and an individual approach to each team member
• Competitive salary packages with performance-based annual reviews
• Opportunity to receive a Performance Bonus for your individual achievements and a Loyalty Bonus recognizing your dedication to the company
• Employment via Contract of Employment (UoP) in complete alignment with Polish Labour Law
• Guaranteed paid vacation, public holidays, and medical leaves as per statutory regulations
• Continuous growth and development opportunities through internal knowledge hubs, corporate courses, and free English classes
• Comprehensive private medical insurance to supplement your standard NFZ coverage.

Team Summary

Our AI QA team provides end-to-end testing solutions of complex AI-driven features, hardware sensors supporting AI functionality, and large-scale cloud and embedded systems. We bring proven experience in both hardware and software product development, with a strong focus on motion detection technologies.

We specialize in building and executing multi-layered automation frameworks across integration, system, and acceptance levels, ensuring comprehensive test coverage, continuous product state monitoring, and stable product releases.

The team contributes to the development of AI features and embedded systems.

Job Summary

We are looking for a QA Engineer with solid experience in software testing, preferably with exposure to embedded systems. In this role, you will be responsible for executing manual tests as well as expanding and maintaining our existing automation coverage.

Responsibilities and Duties

• Define requirements for test environments, data, resources, and tools
• Create and maintain traceability matrices
• Provide accurate high-level and detailed estimations for assigned activities and features
• Develop and execute Test Plans in line with standards
• Ensure automated test coverage (execution, analysis, reporting)
• Contribute to the development and expansion of the existing Python test framework
• Interpret and apply product and project metrics (technical and quality)
• Prepare Test Summary Reports for features and programs in line with standards
• Monitor, update, and implement new QA approaches based on standards (ISO/IEC/IEEE, ISTQB, RST)
• Apply Quality Management principles (Planning, Assurance, Control, Continuous Improvement)

Qualifications and Skills

• 3+ years of experience in manual testing
• Strong knowledge of testing methodologies and test documentation practices
• Experience with bug tracking systems
• Hands-on experience in UNIX/Linux, including CLI navigation and use of regular expressions
• Experience with databases and SQL
• Experience with CI tools (Jenkins)
• Practical experience with API testing (CRUD operations, debugging with Postman or similar tools)
• Basic automation skills with Python (ability to read a script or maintain simple tests)
• Good written and spoken English
• Ability to work from our lab location in Kyiv

Nice to have

• Understanding and hands-on experience with embedded systems testing
• Familiarity with AWS services
• Basic experience with Raspberry Pi
• Hands-on experience in Bash scripting
• Basic knowledge in computer vision and machine learning
• Experience in mobile testing

We offer multiple benefits that include

• The environment of equal opportunities, transparent and value-based corporate culture and an individual approach to each team member.
• Competitive compensation and perks. Annual performance review.
• Opportunity to receive a Performance Bonus for your individual achievements and a Loyalty Bonus recognizing your dedication to the company.
• Gig-contract.
• 21 paid vacation days per year, paid public holidays according to the Ukrainian legislation.
• Development opportunities like corporate courses, knowledge hubs, and free English classes as well as educational leaves.
• Medical insurance is provided from day one. Sick leaves and medical leaves are available.
• Remote working mode is available within Ukraine only.
• Free meals, fruits, and snacks when working in the office.

Project Description

We are looking for a sys admin to cover the US time zone. Working hours: 7 PM to 3 AM.

IT System Administrator (Evening/Night Shift, 7 PM – 3 AM)

Responsibilities:

• Device fleet: set up, maintain, and update Windows and macOS machines; handle hardware onboarding and offboarding.
• User access: manage accounts, roles, permissions, MFA, password resets, and access revocation for departing employees.
• Endpoint updates and security: apply OS and software patches, manage antivirus/EDR, enforce disk encryption (BitLocker, FileVault) and security policies.
• Monitoring: track device health and corporate services, respond to alerts during the shift.
• Backups: oversee backups of workstations and user data.
• Troubleshooting: resolve OS, software, network, VPN, and peripheral issues.
• Developer support: configure local environments (Docker, SDKs, IDEs, repository and VPN access), perform initial diagnosis of deployment issues, and escalate to DevOps.
• Tickets: handle user requests, maintain documentation, and prepare shift handovers.

Requirements:

• Experience: 2+ years as an IT Administrator or IT Support (L2).
• Windows: solid administration of Windows 10/11, including Group Policy.
• macOS: hands-on experience supporting and configuring macOS.
• MDM: Microsoft Intune, Jamf, Kandji, or similar.
• Identity and access: Entra ID (Azure AD) or Active Directory, Google Workspace or Microsoft 365, SSO (Okta, JumpCloud, etc.).
• Networking (end-user level): DNS, DHCP, Wi-Fi, VPN.
• Scripting: PowerShell and Bash/zsh for automating routine tasks.
• Ticketing systems: Jira Service Management, Freshservice, or similar.
• English: B1 or higher.

Nice to Have

• Basic understanding of Docker, Git, and CI/CD to communicate effectively with DevOps.
• Experience with EDR tools (CrowdStrike, SentinelOne, Defender for Endpoint).
• Basic AWS or Azure knowledge at the access-management level (IAM).
• Certifications: Microsoft (MD-102), Apple (ACSP), CompTIA A+/Network+.
• Familiarity with ITIL processes.

Night Shift Specifics

• Autonomy: able to resolve user issues independently without team backup.
• Escalation: clear judgment on when to escalate an incident to on-call DevOps and when it can wait until morning.
• Communication: clear written handovers for the day shift.
• Schedule: consistent availability from 7 PM to 3 AM with an agreed rotation of days off.

POSITION OVERVIEW

As a System Analyst on the Fintech Core project, you will define technical architecture, system specifications, and integration designs for a white-label modular fintech platform that enables rapid creation of digital banking and payment products.

The platform provides a complete technology stack including general ledger, middleware, mobile/web applications, and extensive third-party integrations for KYC, payments, card issuance, and compliance. You’ll work closely with Business Analysts, Solution Architects, and Engineering teams to translate business requirements into detailed technical specifications, design robust system architectures, and ensure seamless integration across microservices while maintaining regulatory compliance and enterprise-grade security.

This role offers hands-on experience designing financial systems at scale, with exposure to payment processing, card networks, digital wallets, cross-border transactions, and regulatory compliance frameworks serving multiple fintech implementations globally.

General project description 

Fintech Core is a white-label modular fintech solution designed for rapid creation and launch of digital banking and payment products. It provides a comprehensive, turnkey platform that enables businesses to build neobanks, digital wallets, payment systems, and other fintech products within 3 months rather than years. The solution includes a complete technology stack: a robust general ledger platform, middleware layer, customizable frontend applications for iOS/Android/Web, and extensive third-party integrations for KYC, payments, card issuance, and compliance. Unlike traditional SaaS offerings, Fintech Core provides full access to source code, eliminating vendor lock-in and enabling deep customization.

The platform is built on a microservices architecture with modular components that can be independently scaled and customized. It supports multi-currency operations, cross-border payments, card issuing, account management, transaction processing, compliance monitoring, and back-office orchestration. The solution is PCI & DSS compliant and designed to meet regulatory requirements across multiple jurisdictions.

Project stage: Active development and continuous enhancement. The platform is mature with multiple successful implementations but undergoes constant evolution to incorporate new regulatory requirements, payment integrations, and fintech capabilities. Quality, scalability, and compliance are paramount priorities.

The size and the structure of the team Cross-functional team including Product Owners, Business Analysts, System Analysts, Frontend/Backend Developers, QA Engineers, DevOps, Security Specialists, and Compliance Consultants. The team operates in an Agile environment with close collaboration between technical and business functions.

YOUR BACKGROUND

Technical Skills 

• 4+ years of experience as a System Analyst, Technical Analyst, or similar role in fintech or banking domains 
• Strong understanding of financial systems architecture including general ledgers, payment processing, and account management 
• Experience with microservices architecture, API design, and distributed systems 
• Proficiency in creating technical documentation: system design documents, data flow diagrams, sequence diagrams, ER diagrams 
• Knowledge of database design and data modeling for transactional systems 
• Understanding of integration patterns, message queues, and event-driven architectures 
• Familiarity with payment systems standards (ISO 20022, SWIFT, SEPA, card schemes) 
• Experience with API specifications (REST, OpenAPI/Swagger, webhooks) 
• Understanding of cloud infrastructure and deployment architectures (AWS, Azure, GCP) 
• Knowledge of authentication and authorization mechanisms (OAuth, JWT, API keys)

Domain Knowledge 

• Understanding of core banking concepts: accounts, transactions, balances, ledgers, reconciliation 
• Knowledge of payment flows: domestic/international transfers, card payments, digital wallets 
• Familiarity with KYC/AML processes and regulatory compliance requirements 
• Understanding of financial data security standards (PCI DSS, GDPR) 
• Experience with fintech product features: onboarding, card issuing, FX, acquiring

Analytical & Documentation Skills 

• Excellent analytical thinking and problem-solving abilities 
• Strong technical writing skills with attention to detail 
• Ability to translate complex business requirements into technical specifications 
• Experience with UML, BPMN, or similar modeling notations 
• Proficiency with documentation tools (Confluence, Notion, or similar) 
• Experience with requirements management and traceability

English level - Upper-Intermediate.

Skills that will be a plus:

• Experience with white-label or multi-tenant system architectures
• Knowledge of blockchain and cryptocurrency integrations
• Familiarity with regulatory frameworks (PSD2, Open Banking, MiFID)
• Experience with performance testing and system optimization
• Understanding of DevOps practices and CI/CD pipelines
• Previous experience with modular platform architecture
• Knowledge of financial compliance and audit requirements
• Experience with data migration and system integration projects

RESPONSIBILITIES

• Analyze and document system requirements for platform modules including payments, card issuance, digital wallets, accounts, ledger management, and compliance systems
• Translate business requirements into detailed technical specifications, API contracts, database schemas, and integration architectures
• Design data models, entity relationships, and data flow diagrams for transactional and financial systems with appropriate normalization and performance considerations
• Define integration patterns and technical specifications for connecting with payment processors, KYC/AML providers, card issuers, and open banking platforms
• Document system behaviors using sequence diagrams, component diagrams, deployment architectures, and API specifications (OpenAPI/Swagger)
• Collaborate with Solution Architects to ensure system designs align with microservices architecture patterns, scalability requirements, and technical best practices
• Define non-functional requirements including performance benchmarks, security controls, data retention policies, and audit trail specifications
• Facilitate technical design workshops with Engineering teams to review system specifications, validate implementation approaches, and identify technical risks
• Create comprehensive system documentation in Confluence covering technical flows, component interactions, message formats, and infrastructure requirements
• Support QA teams by defining system integration test scenarios, technical acceptance criteria, and end-to-end testing strategies
• Analyze system performance bottlenecks and propose optimization solutions for high-throughput financial transaction processing
• Ensure all technical specifications maintain regulatory compliance requirements (PCI DSS, GDPR, PSD2) and financial data security standards
• Maintain traceability between business requirements, system specifications, technical implementations, and test cases
• Participate in sprint planning, technical refinement sessions, and architecture review boards to ensure alignment between product vision and technical execution

TRIONIKA is a company with core expertise in attracting and monetising internet traffic in EdTech and FinTech.

We are looking for an experienced SEO Unit Lead to build and lead an autonomous mini-unit consisting of a Middle and Junior SEO Specialist.

This is a hands-on role for someone who knows how to launch and rank iGaming affiliate websites (Tier-1/Tier-2 markets), test brand and cross-brand strategies, manage budgets, and turn organic traffic into measurable net profit.

What You Will Do

• Develop and execute SEO strategies for iGaming affiliate websites.
• Select promising GEOs, brands, domains, and search opportunities.
• Build semantic cores and work with brand and cross-brand keywords.
• Launch and scale networks of affiliate websites.
• Work hands-on with domains, indexing, redirects, migrations, and Technical SEO.
• Create and test SEO hypotheses and scale successful approaches.
• Analyse rankings, traffic, conversions, registrations, FTDs, and financial results.
• Estimate and manage the budget required to enter selected GEOs.
• Set tasks for Middle and Junior SEO Specialists and take ownership of the unit’s results.

What We’re Looking For

• 3+ years of hands-on SEO experience.
• Proven experience specifically in iGaming affiliate SEO.
• Experience with brand and cross-brand SEO strategies.
• Experience working with European, English-speaking markets.
• Strong understanding of semantic research, SERP analysis, domains, indexing, redirects, migrations, and Technical SEO.
• Ability to assess competition, estimate budgets, and understand the commercial potential of a GEO.
• High autonomy, ownership, and a results-driven mindset.

What We Offer

• Fixed compensation + bonus system.
• The possibility of additional individual rewards for exceptional performance.
• Remote workload.
• Flexible working hours.
• Ownership of your own SEO unit.
• Freedom to propose GEOs, brands, domains, budgets, and hypotheses.
• Proprietary tools for automated website launches, redirects, indexing, GSC data, and link building.
• Transparent communication and a supportive environment

If you know how to build profitable iGaming affiliate projects and want the autonomy, technology, and team to scale your ideas, we would be happy to speak with you!

Core skill: Solidity and smart contracts development — this is the primary focus of the role and the key selection criterion.

• At least 4 years of commercial development experience
• Deep knowledge of Go and Solidity
• Hands-on experience with blockchain platforms (Ethereum, Solana, Tron, etc.), DeFi and dApp architectures
• Candidates must be able to discuss real projects, system architectures and their own experience in depth during the technical interview

Position Name: Research & Development Engineer (Blockchain / Smart Contracts)
Level: Senior
Headcount: 3 (client stated 2–3 engineers)

Hard skills requirements:

• At least 4 years of experience as a developer
• Solidity and smart contracts development - core skill, primary focus of the role
• Deep knowledge of Go
• Expertise in Web3
• Experience working with blockchain platforms (Ethereum, Solana, Tron, etc.)
• Experience with cryptographic protocols and smart contracts
• Experience with DeFi
• Knowledge of decentralized application (dApps) architectures
• Understanding the specifics of cryptocurrency transactions and smart contracts
• Experience with version control systems (Git)

Nice to Have:

• Rust, JavaScript, Node.js, Python
• Experience with financial operations and high-load systems
• Knowledge of containerization and DevOps infrastructure (Docker, Kubernetes)

Soft skills requirements:

• A passion for problem-solving and finding innovative solutions
• Strong communication — able to discuss real projects, architectures and past experience in technical depth
• Research mindset — comfortable with R&D work on new technologies
• Proactivity and ownership

Responsibilities:

• Develop and implement innovative solutions for the company's products in the blockchain and crypto-processing sector
• Write clean, high-quality, maintainable code
• Integrate new functionalities into existing solutions and system architectures
• Integrate blockchain platforms with the company's existing systems
• Conduct code reviews and ensure code security
• Participate in architectural discussions and develop scalable system architectures
• Work with APIs to interact with crypto-payment gateways and external services
• Analyze system performance, identify bottlenecks, and optimize the system
• Participate in the development of new products and services based on blockchain technologies, including MPC and distributed signing

English: Upper-Intermediate (client's own posting states B1-B2)
Office/Remote: Remote. Full-time preferred through EOY 2026 (part-time 15–20 hrs/week possible); full-time required from 2027
Time zone: EST overlap — team is US-based in Tampa, Florida

We are looking for a Corporate Legal & VAT Specialist to join our PSP Department and independently own the corporate and legal documentation function within our international business structure.
 

This role is highly autonomous and involves direct cooperation with Compliance, Finance, auditors, accountants, tax advisers and external legal / corporate service providers.
 

You will work hands-on with Cyprus corporate structures, corporate documentation, contracts, audit support and Cyprus VAT-related matters, as well as cross-border counterparties and international business structures.
 

What you’ll do:

• preparing a complete legal documentation package for each company’s annual audit;
• maintaining and updating corporate documentation, including constitutional documents, certificates, registers, resolutions, powers of attorney, and information on directors, shareholders, and UBOs;
• Ppoviding comprehensive legal support to companies across multiple jurisdictions, including incorporation and corporate administration through external service providers, as well as drafting and reviewing agreements, invoices, service acceptance certificates, and supporting materials required for the proper documentation of business transactions;
• preparing legal explanations in response to requests from auditors, accountants, and tax advisers;
• establishing a legally and documentarily consistent framework for relationships with existing counterparties, taking into account the actual partnership model, financial flows, and Cyprus VAT requirements, including the application of the reverse charge mechanism.
   

What we’re looking for:

• 3+ years of experience in corporate law, corporate administration, legal operations or a similar role;
• hands-on experience with Cyprus companies;
• pactical knowledge of Cyprus corporate law;
• experience supporting annual audits and audit documentation;
• practical knowledge of Cyprus VAT, VIES and reverse charge;
• experience working with corporate registers, resolutions, powers of attorney, UBO/shareholder documentation and other corporate records;
• experience preparing and reviewing commercial agreements and supporting documents;
• strong written English;
• high level of ownership, attention to detail and ability to work independently;
• ability to understand the actual business relationship behind the documents and build the appropriate legal and documentary framework around it;
• ability to communicate effectively with Finance, Compliance, auditors, accountants, tax advisers and external corporate service providers.
   

Will be a plus:

• experience working with international groups and cross-border business structures;
• experience in fintech, PSP, EMI, VASP or other regulated / financial services businesses;
• experience working with international corporate service providers;
• experience handling multiple Cyprus entities simultaneously;
• understanding of international corporate and compliance processes.
   

What makes this role interesting:

• fully remote work;
• high level of autonomy — you will own your functional area rather than work under constant supervision;
• direct communication with Compliance, Finance, auditors and external advisers;
• hands-on work with real Cyprus corporate structures and international business operations;
• ppportunity to work closely with an international PSP business and gain deeper exposure to corporate, legal and compliance processes.

Cloudfresh powers growth for 2,500+ clients in 70+ markets across Cloud, Cybersecurity, CRM, Collaboration, DevSecOps, and Data & AI. We partner with Google Cloud, Chrome Enterprise, Microsoft, HubSpot, Zendesk, Asana, Miro, GitLab, Okta, JumpCloud, Cloudflare and Wiz.

We’re looking for a User Acquisition Manager to own how new customers find Cloudfresh. Not one ad account. The whole engine. Running campaigns is part of it. The bigger job is deciding where the next qualified buyer comes from across channels, vendors and markets, and proving it in pipeline.

What You’ll Do

• Own paid acquisition end to end. Google Ads, LinkedIn, Meta and whatever channel earns its budget next.
• Reallocate budget every month across vendors, regions and channels based on CAC and pipeline. Cut what doesn’t pay back.
• Build and test landing pages, offers and retargeting flows. Grow conversion rates quarter over quarter.
• Run weekly tests on audiences, creatives, bidding and messaging. Keep a shared log of what worked.
• Set up tracking from ad click to closed deal in HubSpot. Report pipeline and revenue by campaign, not just leads.
• Drive registrations and pipeline for events, from webinars to our own events. Bring in real attendees who convert into deals, not just sign-ups.
• Use AI tools and agents to automate reporting, QA, competitor monitoring and campaign analysis.

• Agree on ICP, lead quality criteria and SLAs with marketing and sales teams. Review lead quality together every month.

   

What You Bring

• 3+ years in paid acquisition or growth, with B2B SaaS or tech experience
• Hands-on mastery of Google Ads and LinkedIn Ads. You’ve managed real budgets and can show results
• You think in pipeline and CAC, not CTR
• Strong analytics: GA4, Looker Studio or similar, plus AI tools to analyze data, spot patterns and build reports faster
• Experience with HubSpot or another CRM and marketing automation
• You’ve built and tested landing pages, not just briefed them
• You already use AI tools in your daily work and want to push further

• English at B2 or higher

   

Nice to have:

• Experience marketing cloud, security or IT products
• Multi-market campaigns across Europe, the Middle East or Central Asia
• Partner or channel marketing experience
• ABM tools and intent data

• Basic SQL or scripting for ads automation

   

Our Values

1. Customer First. Your success is our purpose.
2. Own the Outcome. We see it through.
3. Direct & Human. Honest, open and caring.
4. Raise the Bar. We never settle for “good enough”.

5. Generate the Real✨ Our DNA.

    

What We Offer

• Build your cloud marketing expertise with Google Cloud, Chrome Enterprise, Microsoft, HubSpot, Zendesk, Asana, Miro, GitLab, Okta, JumpCloud, Cloudflare and Wiz.
• Lead meaningful campaigns across EMEA, making an impact in diverse and dynamic markets.
• Bring your ideas to life in a culture that values creativity and is open to new approaches.
• Enjoy a competitive salary and a transparent bonus system tied to your results.
• Work flexibly remote or join us for a coffee in Kyiv or Prague offices.
• 24 vacation days, bank holidays, and 14 days sick leave.
• Medical insurance for team members in Ukraine.

When applying to this position, you consent to the processing of your personal data by CLOUDFRESH for the purposes necessary to conduct the recruitment process, in accordance with Regulation (EU) 2016/679 of the European Parliament and of the Council of April 27, 2016 (GDPR).

Additionally, you agree that CLOUDFRESH may process your personal data for future recruitment processes. You can withdraw this consent at any time.

Sii Ukraine is a subsidiary of Sii Poland — the leader in IT, engineering, and consultancy services with over 7500 IT experts in Poland and more than 250 prestigious customers.

We are looking for a QA Automation Engineer to join a large-scale online betting and gaming platform supporting internationally recognized brands.

The project focuses on delivering reliable, high-quality web applications and seamless end-to-end customer journeys in a highly transactional environment.

You will work closely with QA Engineers, Developers, Product Owners and other stakeholders throughout the Software Development Lifecycle, with a strong focus on test automation, regression coverage and continuous delivery.

Responsibilities:

• Develop and maintain automated end-to-end tests using Playwright and JavaScript\TypeScript
• Design and extend automated regression test suites for web applications and critical customer journeys
• Create reusable and maintainable test automation components
• Improve and extend the existing automation framework
• Analyse business requirements, user stories and acceptance criteria to define appropriate test coverage
• Perform functional, regression, integration and exploratory testing
• Validate end-to-end flows across multiple application components and integrated services
• Identify, document and track defects
• Support developers with root cause analysis
• Investigate failed automated test executions and distinguish application defects from automation issues
• Maintain and improve automated tests to increase stability, reliability and test coverage
• Support quality validation of new features before production deployment
• Collaborate with Developers, Product Owners, Business Analysts and other QA Engineers
• Participate in refinement, planning and other Agile/Scrum activities
• Contribute to the continuous improvement of QA processes, testing practices and automation strategy
• Support automated test execution as part of CI/CD pipelines

Requirements:

• Strong experience in QA Automation
• Hands-on experience with Playwright
• Good practical knowledge of JavaScript
• Experience creating and maintaining automated E2E tests
• Experience with web application testing
• Good understanding of functional, regression and integration testing
• Experience working with automated regression suites and test frameworks
• Understanding of CI/CD and automated test execution in pipelines
• Ability to analyse requirements and define test coverage
• Experience investigating test failures and identifying the root cause
• Experience working in an Agile/Scrum environment
• Good communication and collaboration skills
• English at a level sufficient for communication within an international team
• Tax residence in Ukraine required

Nice to Have:

• Experience working with large-scale or highly transactional web platforms
• Experience testing complex customer journeys
• Experience with integrated services and distributed application components
• Experience improving existing automation frameworks
• Experience with API testing
• Experience working with international teams and stakeholders

Team & Ways of Working

• Agile/Scrum methodology
• Close collaboration between QA, Development, Product and Business teams
• Strong focus on test automation and continuous improvement
• Automated testing integrated into CI/CD processes
• Focus on quality throughout the entire Software Development Lifecycle

We are the creators of a new fintech era!

Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.

We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.

Requirements:

We're looking for a Senior / Staff-level engineer with an open mind and a builder's instinct - someone who goes beyond executing tasks and is ready to own the High-Performance practice end-to-end: establish engineering processes, drive R&D, evaluate and champion new technologies, and lead their adoption in production.

The ideal candidate can bridge the gap between business requirements for low latency and high throughput and the realities of existing infrastructure - translating "we need to be faster" into an actionable technical roadmap. You bring a fresh perspective, know how to organize the work, and are equally comfortable optimizing a hardware parameter and presenting a strategy to stakeholders.

We expect 5+ years of hands-on experience as a DevOps/SRE/Systems Engineer in performance-critical environments - and the maturity to grow yourself and grow a team around you.

• Linux: Advanced administration and OS-level tuning — real-time OS configurations, cgroups, CPU isolation, memory management, and low-level network stack configuration.
• Hardware Internals: Deep understanding of CPU power and performance states (C/P-states), Hyper-Threading / SMT trade-offs, TX/RX ring configuration, and the full data path from NIC through PCIe to memory and CPU. Ability to reason about and tune each stage of that path under production load.
• Networking & TCP Internals: Deep knowledge of TCP/IP — congestion control, ACK behavior, buffer tuning, and protocol-level latency sources. Strong Linux networking fundamentals: low-latency NIC configuration, bypass networking technologies (DPDK, RDMA), and market connectivity (multicast feeds, co-location networks, VPNs).
• Performance Engineering: Practical experience profiling latency-sensitive systems; familiarity with tools such as perf, flamegraph, strace, tcpdump, eBPF, and hardware performance counters.
• Containerization: Deep knowledge of Docker and Kubernetes, including low-overhead deployment patterns and performance trade-offs of containerized workloads.
• IaC: Proven track record with Ansible, Terraform, and Helm in production environments.
• Monitoring: Hands-on experience with the Prometheus / Grafana stack; ability to build latency-aware dashboards and alerting (P99, jitter, throughput KPIs).
• Scripting: Solid scripting in Bash and Python; Golang is a strong plus given its role in systems tooling.
• CI/CD & Secret Management: Strong grasp of CI/CD pipelines with experience integrating performance validation stages; familiarity with Vault for secrets management.
• Security: Understanding of DevSecOps principles and Kubernetes security policies.

Key Performance Metrics You'll Work With

Latency Distribution - P99 / P99.9 across the tick-to-trade path, using hardware-level timestamps (NIC/PTP).

Jitter - variance between min/max latency, measured over large sample sets in live market conditions.

Throughput - messages per second (orders + cancels) under exchange burst scenarios.

System Reliability - сontinuous monitoring of uptime

Extra Credit / Big Pluses

• Hands-on experience with kernel-level optimization: syscall reduction, network stack bypass (DPDK, RDMA, Solarflare OpenOnload).
• Background in HFT, algorithmic trading, or other ultra-low-latency production environments.
• Experience with hardware timestamping, PTP/IEEE 1588, and precision time synchronization.
• Familiarity with colocation operations and exchange connectivity (cross-connects, proximity hosting).
• Proven SRE track record with formal SLO/error budget frameworks in latency-sensitive contexts.
• DevSecOps: vulnerability scanning, Zero Trust, RBAC, and secure delivery pipelines.
• Understanding of business processes in FinTech, crypto, or electronic trading.

Responsibilities:

• Low-Latency Infrastructure Ownership: Design, deploy, and continuously optimize infrastructure for latency-sensitive trading systems — market data handlers, order/deal gateways, and risk check engines. Own the full stack from bare metal to application delivery. Define and maintain a reference architecture for low-latency connectivity when onboarding new trading venues, including reproducible configuration baselines, validation procedures, and performance acceptance criteria — so every new venue goes live on a proven, optimized stack.
• Cloud & Hybrid Network Connectivity: Design, implement, and maintain complex low-latency network solutions for cloud provider interconnects - including cross-connects and Direct Connect / ExpressRoute links between cloud regions, hybrid on-premise/cloud topologies, and high-throughput inter-server fabrics. Ensure both latency minimization and fault tolerance at every layer: physical redundancy, failover routing, and path diversity across providers and regions.
• Hardware & OS Stack Tuning: Go deep on the full hardware and OS stack - CPU pinning, C/P-states, HT/SMT configuration, NUMA topology, IRQ affinity, TX/RX ring sizing, NIC offloading, and network stack bypass (DPDK/RDMA where applicable). Understand the complete data path from NIC through PCIe to memory and CPU - and optimize every hop.
• Infrastructure as Code (IaC): Automate provisioning and configuration of high-performance environments using Ansible, Terraform, and Helm - with performance reproducibility as a first-class requirement.
• Latency Profiling & Benchmarking: Systematically profile and debug latency hotspots across the full execution path. Establish and maintain SLA/SLO targets; track P99/P99.9 distributions, jitter, and throughput - not just averages.
• CI/CD for Performance: Build and maintain CI/CD pipelines that include automated latency regression testing, so performance degradations are caught before they hit production.
• Monitoring & Observability: Design and operate comprehensive latency monitoring and alerting systems (Prometheus, VictoriaMetrics, Grafana) - including hardware timestamping (NIC/PTP) and fine-grained performance telemetry.
• Colocation & Network Placement: Research, evaluate, and manage optimal server placements - colocations, cross-connects, proximity hosting. Work closely with network and infrastructure teams to minimize physical and logical distance to exchanges.
• High Availability & DRP: Design systems that maintain stability and reliability under peak load while continuously pushing latency lower - zero regressions, always.
• Cross-Team Collaboration: Work alongside algo developers, quant teams, and network engineers to ensure trading strategies execute with minimal infrastructure overhead.

Working terms

Immerse yourself in Crypto & Web3:

• Master cutting-edge technologies and become an expert in the most innovative industry.

Work with the Fintech of the Future:

• Develop your skills in digital finance and shape the global market.

Take Your Professionalism to the Next Level:

• Gain unique experience and be part of global transformations.

Drive Innovations:

• Influence the industry and contribute to groundbreaking solutions.

Join a Strong Team:

• Collaborate with top experts worldwide and grow alongside the best.

Work-Life Balance & Well-being:

• Modern equipment.
• Comfortable working conditions, and an inspiring environment to help you thrive.
• 24 calendar days of paid leave.
• Additional days off for national holidays.

Cloudfresh ⛅️ powers growth for 2,500+ clients in 70+ markets across Cloud, Cybersecurity, CRM, Collaboration, DevSecOps, and Data & AI. We partner with Google Cloud, Chrome Enterprise, Microsoft, HubSpot, Zendesk, Asana, Miro, GitLab, Okta, JumpCloud, Cloudflare and Wiz.

We hire for high performance and hold a high bar. We’re looking for a Talent Sourcer who wants to help us raise it. You’ll join our People & Performance team. Your job is to find, engage and nurture passive talent across IT, sales, cloud architecture and technical consulting. You’ll work closely with recruiters and hiring managers to map niche markets and build the pipelines our growth depends on.

What You’ll Do

• Source proactively. Find technical and non-technical talent through LinkedIn, Boolean search, communities, job platforms and other creative channels.
• Build pipelines. Map target markets across EMEA, generate qualified lead lists, and keep pipelines warm for recurring and critical roles.
• Engage candidates. Write personalized outreach that makes great people want to talk to us.
• Pre-qualify. Run short screening calls against each role’s scorecard to assess skills, motivation and culture fit.
• Activate referrals. Generate warm leads through our employee referral program and professional networks.
• Partner with hiring teams. Refine candidate personas with recruiters and hiring managers, adjust sourcing strategy, and share market intelligence.

• Keep data clean. Maintain accurate candidate records and talent pools in our ATS.

   

What You Bring

• 1+ years of talent sourcing or recruitment experience, in an agency or in-house, ideally in IT or SaaS
• Strong command of Boolean search, LinkedIn and creative sourcing channels
• Excellent written and verbal communication, with a track record of high outreach response rates
• Experience with modern ATS and CRM tools and recruiting workflows
• A results-driven, resourceful mindset and comfort working in a fast-paced, multi-market environment

• Professional working proficiency in English, Ukrainian. Polish are a strong plus.

   

Our Values

1. Customer First. Your success is our purpose.
2. Own the Outcome. We see it through.
3. Direct & Human. Honest, open and caring.
4. Raise the Bar. We never settle for “good enough”.

5. Generate the Real✨ Our DNA.

    

What We Offer

• Compensation: a competitive base salary, on an employment or contractor arrangement depending on your location
• Time off: 24 days of paid vacation and 14 paid sick days per year
• Flexibility: fully remote work with flexible hours and core hours aligned to EET
• People: work alongside A-players and seasoned cloud professionals

• Scope: hands-on exposure to international hiring across EMEA, with a focus on CEE

   

When applying to this position, you consent to the processing of your personal data by CLOUDFRESH for the purposes necessary to conduct the recruitment process, in accordance with Regulation (EU) 2016/679 of the European Parliament and of the Council of April 27, 2016 (GDPR).
 

Additionally, you agree that CLOUDFRESH may process your personal data for future recruitment processes.

We are the creators of a new fintech era!

Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.

We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.

Requirements:

We're looking for a DevOps engineer with 4+ years of hands-on experience, at least 2 of them spent building and running data or analytics infrastructure. You've designed systems that move, store, and serve data at scale. Warehouse maintenance is part of your daily routine, and writing Python, Bash, or SQL scripts is second nature. You treat data security as a core responsibility: you protect confidentiality, enforce zero-trust, least-privilege access, and automate everything you touch. Solid IaC skills are a must.

• IaC & CI/CD: Production experience with Terraform, Ansible, and Helm, plus CI/CD systems (GitLab CI, GitHub Actions, Jenkins, or ArgoCD). We expect you to design pipelines, not just use them.
• Containerization: Working knowledge of Docker and Kubernetes, including running data workloads on it (like Spark on Kubernetes, stateful services, operators).
• Cloud: Solid experience with AWS (S3, EC2, EMR, Redshift, Glue, IAM) or an equivalent cloud provider.
• Linux & Networking: Solid Linux administration skills and foundational networking knowledge relevant to distributed systems.
• Analytical Databases: Hands-on operation of ClickHouse and/or the Hadoop ecosystem (HDFS, Hive, YARN), including cluster setup, tuning, and scaling.
• Data Warehouses: Practical experience with Snowflake or Redshift, covering warehouse sizing, workload management, performance tuning, and cost control.
• Large Databases: Experience administering databases at terabyte scale: replication, backup and restore strategies, partitioning, and migrations with minimal downtime.
• SQL & Scripting: Strong SQL skills, including reading execution plans and optimizing heavy queries. Confident in Python and Bash for automation, data parsing, and investigation.
• Data Lakes & Object Storage: Working knowledge of S3-compatible storage, columnar formats, partitioning strategies, and data lifecycle management.
• Orchestration & Streaming: Familiarity with Airflow (or similar orchestrators) and Kafka, and how they fit into data pipelines.

Extra Credit / Big Pluses

• Experience with Tableau, Power BI, Looker, Superset, or similar BI tools, including administration, performance tuning, and data source design.
• Hands-on experience with dbt and analytics engineering practices.
• Experience with open table formats (Apache Iceberg, Delta Lake, Hudi) and query engines like Trino/Presto or Athena.
• FinOps experience in data platforms: managing Snowflake credits, Redshift clusters, and storage costs at scale.
• Spark performance tuning and job optimization.
• Change data capture (CDC) with Debezium or similar tools.
• Data quality tooling (Great Expectations, Soda) integrated into CI/CD.
• Golang or Rust tooling experience.
• Knowledge of data governance and compliance (GDPR, data retention, PII handling).
• Understanding of business processes in the FinTech/Banking/Crypto sector.

Responsibilities:

• Infrastructure Ownership: Own the infrastructure behind our data and analytics platform, from provisioning to daily operations. Keep it reliable, scalable, and cost-efficient as data volumes grow.
• Infrastructure as Code: Provision and configure all data infrastructure with Terraform, Ansible, and Helm. 
• CI/CD Pipelines: Build and maintain delivery pipelines for both infrastructure and data code (ETL jobs, Airflow DAGs, dbt models, schema migrations), with automated testing, safe rollouts, and fast rollback.
• Database & Warehouse Operations: Maintain ClickHouse, Snowflake, Redshift, and вPostgreSQL at multi-terabyte scale, handling replication, backups, upgrades, capacity planning, and disaster recovery.
• Data Lake Storage: Manage S3-compatible data lake storage, including partitioning, file formats, and lifecycle policies.
• Automation & Script Optimization: Refactor and automate Python, Bash, and SQL scripts to cut runtimes and eliminate manual work.
• Performance & Cost: Right-size clusters and warehouses, tune heavy queries, and keep compute and storage spend under control.
• Monitoring & Alerting: Cover data infrastructure with metrics, logs, and alerts for cluster health, pipeline SLAs, and job failures.
• Security & Access Control: Enforce least-privilege access, secrets management, encryption, and auditability for sensitive data.
• BI Infrastructure: Support the infrastructure behind Tableau or similar BI tools.
• Big Data Platforms: Deploy, tune, and troubleshoot Hadoop, Spark, and Kafka clusters in production.
• Collaboration: Work with data engineers, analysts, and developers to turn their workloads into solid infrastructure decisions.
• Security & Access Control: Implement role-based access, secrets management, encryption at rest and in transit, and auditability for sensitive datasets in line with regulatory requirements.

Working terms

Immerse yourself in Crypto & Web3:

• Master cutting-edge technologies and become an expert in the most innovative industry.

Work with the Fintech of the Future:

• Develop your skills in digital finance and shape the global market.

Take Your Professionalism to the Next Level:

• Gain unique experience and be part of global transformations.

Drive Innovations:

• Influence the industry and contribute to groundbreaking solutions.

Join a Strong Team:

• Collaborate with top experts worldwide and grow alongside the best.

Work-Life Balance & Well-being:

• Modern equipment.
• Comfortable working conditions and an inspiring environment to help you thrive.
• 24 calendar days of paid leave.
• Additional days off for national holidays.

With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!

Let’s Build the Future Together!

About us

Prizmar is a young tech services and market intelligence company that is turning complex financial flows and trading operations into automated, high-integrity pipelines. We operate in Fintech and Agri streams. 
Prizmar Agri has two verticals – Services and Intelligence. Services help traders, crushers and agriholdings in Central / Eastern Europe and the Black Sea region architect their trade and analytics processes. Intelligence develops an AI-supported market intelligence tools for Black Sea oilseeds.
 

The role

You will work directly with the co-founder of Prizmar, with extensive experience in oilseed trading and analytics. You will support projects in Services, analyse market and client data, and help shape our AI market intelligence tool. You will learn how the agri trading business works from the inside. We are looking for someone who treats the business as their own, spots what should be improved and takes it forward.
 

What you will do

• Track the Black Sea oilseed market: prices, exports, logistics, news
• Build and maintain analytical models and Power BI dashboards
• Contribute to client services in agri trading and analytics under the founder's supervision
• Dive into clients' processes, from decision making to execution, and help improve them
• Work with our data and AI tools and help automate routine analysis
• Contribute to development of our AI market intelligence tools
• Support market and company research
   

What you bring

• A degree in economics, commerce, business analytics or a related field
• 2–3 years of experience in agricultural market research, analytics or trading
• Advanced Excel and hands-on Power BI
• Daily use of AI tools such as Claude or ChatGPT in your work
• Ownership mindset: you take initiative, look at how the company’s processes work as a whole, and propose improvements without waiting to be asked
• Fluent Ukrainian and English at B2 level or higher
• You work independently, communicate clearly and are eager to shape company’s growth

Nice to have

• Knowledge of the grain or oilseed market in Ukraine or Black Sea
• Python, SQL or another data tool
• French, Romanian or Polish
   

What we offer

• A full-time role with competitive remuneration, fully remote from Ukraine or the EU
• Direct work with founders and fast learning in agricultural commodity trading and analytics
• Flexible working hours around core hours of 10:00–16:00 Kyiv time
• A culture where strategic ideas are incentivized and rewarded
• Official contract with paid leave according to Ukrainian or EU legislation
• Regular salary review and a wider scope as the company grows
• Performance-based annual bonus
• Power backup equipment to keep you online (Ukraine only)
   

Hiring process

CV review, 60-minute intro call, a short test task, final interview with both founders. We reply to every applicant within 2 weeks.

Role Overview

We are looking for a Senior Email Marketing Manager to own our newsletter portfolio, driving engagement, retention, deliverability, and revenue.

You will manage 7–10 newsletters, working closely with writers and designers to optimize content, subscriber experience, and commercial performance. This is an individual contributor role with the opportunity to build and lead a team as the portfolio grows.

Key Responsibilities

• Own the strategy, publishing, and optimization of multiple newsletters.
• Improve key performance metrics, including open rate, CTR, subscriber retention, and revenue.
• Optimize subject lines, content, layouts, CTAs, and publishing schedules.
• Develop subscriber lifecycle, segmentation, and re-engagement campaigns.
• Own email deliverability, including sender reputation, domain health, authentication (SPF, DKIM, DMARC), IP management, and inbox placement.
• Monitor list quality, suppression, and hygiene to maintain healthy databases.
• Optimize newsletter monetization through advertising, sponsorships, and affiliate placements.
• Conduct A/B tests and analyze campaign performance to improve results.
• Ensure all campaigns meet editorial, branding, and quality standards.
• Collaborate with writers, designers, and internal stakeholders to deliver high-quality newsletters.
• Build scalable processes, documentation, and reporting to support portfolio growth.

Requirements

Must Have

• 3+ years of experience in email marketing or newsletter management (managing email campaigns from 100K each).
• Experience managing high-volume email programs or multiple newsletters.
• Strong understanding of email KPIs, segmentation, automation, and lifecycle marketing.
• Hands-on experience with email deliverability, sender reputation, authentication, and inbox placement.
• Experience optimizing newsletter engagement and monetization.
• Strong analytical, organizational, and project management skills.
• Excellent QA skills and attention to detail.
• Experience using AI tools to improve marketing workflows.
• English proficiency at C1 level or higher.

Nice to Have

• Experience with Substack, Ghost or similar email platforms.
• Experience with sponsorship, affiliate, or advertising monetization.
• Background in digital publishing or content-led growth.
• Familiarity with email validation tools such as NeverBounce or ZeroBounce.

We're looking for someone who:

• Takes ownership and works independently.
• Thinks strategically and makes data-driven decisions.
• Has a strong commercial mindset.
• Builds scalable processes and continuously improves them.
• Collaborates effectively across teams.
• Pays close attention to detail and quality.
• Thrives in a fast-paced environment.

What We Offer

Professional Growth

• International and multicultural environment.
• Career development opportunities.
• Learning resources and corporate library.
• Opportunity to work with a high-performing team.
• Access to modern tools and AI technologies.

Benefits

• Competitive salary.
• Performance bonuses.
• 21 paid vacation days.
• 14 paid sick leave days.
• Work-life balance.
• Team events and activities.

Working Environment

• Remote or hybrid work.
• Modern office in Warsaw.
• Complimentary snacks and drinks.
• Friendly and supportive team.

We Look Forward to Meeting You!

If you're passionate about building high-performing newsletters and driving measurable business growth through email marketing, we'd love to hear from you.

AllAI is looking for a Content & Social Media Manager to grow our audience and brand awareness through social media, email newsletters, and partner communities.

What you'll do:

• Own the content plan and backlog for social channels
• Publish and test topics, formats, channels, and CTAs
• Launch and run email newsletters
• Monitor AI news, trends, and events
• Engage with AI/tech communities, university communities, event organizers, and partners
• Organize cross-promotion, special offers, and partnership activities
• Analyze results and turn them into new hypotheses

• Work with AI and automating marketing processes that could be automated and scaled.

   

What we're looking for:

• Experience running social media and/or newsletters, ideally in tech/AI or a fast-moving startup
• Interest in AI/tech. If you regularly reading AI news - it's a great fit.
• Comfort working through hypotheses and analytics, not just "posting content"
• Strong written English
• Community-building instincts — you like talking to people, not just publishing at them
• Bonus: experience working alongside automation tools

What success looks like: growing audience, reach and engagement, website traffic, newsletter list, partner network, and brand awareness across B2C and B2B.

Work format: remote, full-time