Jobs at Djinni

Data Science UA is a service company with strong data science and AI expertise. Our journey began in 2016 with uniting top AI talents and organizing the first Data Science tech conference in Kyiv. Over the past 9 years, we have diligently fostered one of the largest Data Science & AI communities in Europe

About the role:
We are looking for a Senior network architect / Network & embedded systems engineer to join a defense technology project focused on improving the reliability, scalability and intelligence of a constrained wireless sensor network.
The project involves an existing multi-layer wireless network with gateways, repeaters and end devices, dynamic topology, routing and path management, constrained node capacity, radio-quality telemetry and battery-dependent node availability.
The engineer will work at the intersection of network architecture, wireless communications, embedded systems, telemetry and network simulation, helping the team understand the current system, establish technical baselines and identify opportunities for optimization, automation and AI/ML-assisted network intelligence.

Responsibilities:
Network architecture & Protocol analysis
- Analyze the existing wireless network architecture and communication layers
- Understand gateway-to-gateway, device-to-gateway and device-to-device communication
- Analyze network discovery, joining, routing, path selection and path recovery mechanisms
- Model network topology, node states, links, routes and state transitions
- Identify network constraints related to repeater capacity, child-device limits, radio airtime and node availability
- Identify current bottlenecks, failure modes and architectural limitations
- Establish technical baselines for network behavior and reliability
Wireless & Network telemetry
- Analyze available RSSI, SNR, packet-loss, battery, availability, topology and routing telemetry
- Understand how telemetry is generated, collected and propagated through the system
- Identify gaps in current observability and recommend additional instrumentation where required
- Work with Data/ML Engineers to define a reliable representation of network state over time
Embedded & Edge integration
- Understand the embedded architecture of network nodes, gateways and repeaters
- Analyze interfaces between firmware, radio components, network protocols and telemetry systems
- Support integration of telemetry and experimental instrumentation
- Participate in field deployments and controlled experiments
- Investigate issues that span firmware, radio communication and network behavior
Network simulator
- Analyze the existing network simulator and its architecture
- Determine which network parameters and scenarios can be controlled
- Assess available simulator outputs and telemetry
- Compare simulator behavior with real-world network measurements
- Identify calibration requirements and simulator-to-real-world discrepancies
- Help establish a reliable simulation environment for future experimentation and synthetic data generation
Feasibility & Solution design
- Formulate and evaluate technical hypotheses around: network-state awareness, routing and path optimization, network reliability, degradation prediction, capacity forecasting, predictive maintenance, simulator-based experimentation
- Work with ML Engineers to determine whether a problem is better addressed through ML, optimization, graph algorithms, heuristics or deterministic logic
- Contribute to technical feasibility assessments and implementation recommendations
- Help define implementation-ready technical scopes for promising opportunities

Requirements:
- 5+ years of experience in network engineering, network architecture, embedded systems or a closely related field
- Strong understanding of networking protocols and distributed network behavior
- Hands-on experience with wireless networks, mesh networks, IoT or constrained networks
- Experience analyzing network topology, routing, link quality and network capacity
- Strong understanding of RSSI, SNR, packet loss, latency, link quality and radio communication metrics
- Experience working with network telemetry and distributed systems
- Practical experience with embedded systems and/or embedded Linux
- Experience integrating firmware/embedded systems with network and telemetry infrastructure
- Experience with network simulators, emulators or controlled network experiments
- Strong analytical and troubleshooting skills
- Ability to work with incomplete information and reverse-engineer existing systems
- Ability to communicate complex technical concepts clearly to engineers and non-engineering stakeholders

Nice to have:
- LoRa / LoRaWAN experience
- Experience with mesh/ad-hoc/tactical networks
- Experience with constrained wireless networks
- Experience with RF systems or radio telemetry
- Experience with network optimization
- Experience with graph-based network modeling
- Experience working with network simulators or digital twins
- Experience in defense, telecommunications, robotics, IoT or autonomous systems
- Python for network analysis, experimentation and data processing
- Experience collaborating with ML/Data Engineering teams

We are looking for an experienced C++ / backend engineer to join on a short-term, time-bound basis to lead refactoring and modernization work on a mature desktop application. The product has a large, cross-platform C++ codebase (~500k lines of code plus third-party dependencies) built on Qt5. The primary goal of the engagement is to modernize the build toolchain and dependency stack, with the migration to Apple Silicon as the top priority.

Not all of the tasks below are guaranteed to be completed within the engagement. At a minimum, the Intel → Apple Silicon migration must be delivered; remaining items will be prioritized based on time and progress.

• Responsibilities:

  Migrate the macOS build of the application from an Intel to an Apple Silicon build (C++ codebase, ~500k LOC plus third-party libraries, Qt5).
  Migrate third-party libraries from Conan 1.x to Conan 2 across the Windows, macOS, and Linux builds.
  Update the Linux build to use Clang 19 (from Clang 11) and move the build to Ubuntu 24.04.
  Update selected third-party libraries to recent versions to meet security requirements.
  Migrate the codebase from C++17 to C++20.

• Mandatory Skills Description:

  Proficiency in modern C++ (17/20) and cross-platform development across Windows, macOS, and Linux.
  Strong experience with CMake and build-system toolchain configuration.
  Hands-on knowledge of the Conan package manager.
  Familiarity with the Clang / LLVM toolchain.
  Experience with Qt5 application development and macOS packaging / code signing.
  Comfortable working with Docker-based CI/CD pipelines and large legacy codebases.

The project focuses on developing advanced software solutions for the oil and gas industry, supporting key stages of the reservoir lifecycle, including exploration, development, production, operations, maintenance, and abandonment.

The successful candidate will join the Information Management and Platform Technologies Development team and contribute to the design and development of next-generation software products. The role offers an opportunity to work with modern technologies, apply innovative ideas, and build solutions used in complex energy industry environments.

• Responsibilities:

  Key Responsibilities/Accountabilities:
  - Knowledge of software engineering best practices (including requirements analysis, system design, modularity, version control, testing, documentation, etc.) for productivity, collaboration, quality, and maintainability.
  - Knowledge of how a component fits into a larger ecosystem of products and services.
  - Understanding of how these different pieces work together, and communicate with them (using library calls, REST APIs, database queries, etc.)
  - Know how to build appropriate interfaces for components that others will depend on. Knowledge of basic system design patterns to avoid bottlenecks and let your algorithms scale well with increasing volumes of data.
  - Perform research and development tasks.
  - Expected to design, code, test, do troubleshooting and document engineering systems applications by following the software development lifecycle.
  - Accomplishes engineering and organization mission by completing related results as needed.
  - Updates job knowledge by studying state-of-the-art development tools, programming techniques, and computing equipment; participating in educational opportunities; reading professional publications; participating in professional organizations.

• Mandatory Skills Description:

  - Degree in Computer Science, Engineering, or equivalent. Master's preferred
  - Software Development Fundamentals
  - Strong understanding of Object-Oriented Design and Principles
  - 5+ years of professional experience with Java and Angular
  - Build & CI/CD: Git Ci/CD, Helm
  - Database background: Posgtess
  - REST API Express
  - Hapi
  - Self-motivated
  - Problem Solving skills
  - Works well within a team
  - Excellent communication skills

We are looking for a Regular DevOps / Cloud Infrastructure Engineer to support infrastructure automation, environment deployment, and GitOps-based delivery.

• Responsibilities:

  * Own the Terraform infrastructure - API Gateway routes, Lambda functions, IAM roles, EC2, DynamoDB tables, SQS queues, AWS Workspaces .etc
  * Design and maintain Python Lambda handlers that integrate with Active Directory/LDAP, GitLab, JFrog Artifactory, and the AWS SDK, handling KMS-encrypted secrets and SSM parameters.
  * Run and troubleshoot the Jenkins deployment pipeline across environments (plan / create / destroy / test).
  * Keep integration tests healthy and add coverage for new endpoints.
  * Manage secrets and access control - Jenkins credentials, KMS key permissions, API keys stored in SSM.
  * Solid Ansible skills for authoring and maintaining idempotent playbooks, roles, and inventories across Linux and Windows hosts.
  * Strong Linux administration skills, including shell scripting, package and service management, systemd, networking, and troubleshooting.

• Mandatory Skills Description:

  * Hands-on experience with AWS or Azure.
  * Experience with Terraform and infrastructure-as-code.
  * Knowledge of networking: VPC, subnets, routing, security groups, NAT, private endpoints.
  * Experience with IAM roles and policies.
  * Experience with Jenkins, GitLab CI/CD or Azure DevOps Pipelines.
  * Ability to troubleshoot complex cloud deployments.
  * Good communication and documentation skills.

• Nice-to-Have Skills Description:

  * PowerShell for Windows / AD / Workspaces helper scripts.
  * JFrog Artifactory REST API - permissions, replication, tokens, storage.
  * Windows Server administration, RSAT, and SSM Run Command.
  * Bedrock and SageMaker service familiarity.

About us

We're hiring on behalf of our partner — a company that powers the operations behind regulated and high-risk industries. 

They give fast-moving businesses in these spaces the structure, compliance and talent they need to scale — without slowing down.

About the Role

Crypto never sleeps, and once something settles, it settles — there's no chargeback, no "undo," no calling the bank to reverse it. That's basically the whole job in one sentence: you make sure every deposit, withdrawal, trade settlement, OTC leg, staking payout, and institutional transfer goes out right, on time, every single time.

We're talking about millions of dollars in client and corporate assets moving every year, where one wrong address or wrong network is permanent. So yeah, this is a serious role — but we're not looking for someone who's stiff or robotic about it. We want someone who's genuinely good under pressure, sharp with details, and treats "100% accuracy" as just... the normal standard, not some heroic achievement.

You'll run settlement day-to-day, own how the whole thing is controlled, and be the person people come to when something's about to go sideways — right before it reaches the Deputy CFO.

What You'll Do

Keep Settlements Moving (and Correct)

• Own settlement end-to-end — crypto in/out, fiat payouts, stablecoin transfers, OTC trades, institutional funding, all of it
• Make sure everything lands on the right asset, right network, right memo/tag, right address — no exceptions
• Get comfortable working across multiple chains (BTC, ETH, L2s, Solana, Tron, etc.) — gas fees, congestion, reorgs, all the fun stuff
• Work inside dual-control / four-eyes setups — approve what's yours to approve, escalate what's not
• Personally handle the high-stakes, VIP, and institutional settlements — including proper callback checks before anything moves

Keep Everything Reconciled

• Own daily reconciliation across on-chain balances, exchange ledgers, custodians, and bank accounts — unexplained gaps aren't really a thing you let slide
• Make sure client and company money never mix, and keep the paper trail to prove it
• Chase down the weird stuff — stuck transactions, wrong-network deposits, dust, lost memos — until it's actually resolved
• Keep a clean break log and root-cause tracker, and give Finance a clear weekly picture

Manage Wallets & Liquidity

• Keep hot/warm/cold wallets funded and balanced so settlements never get stuck waiting on liquidity
• Take part in signing operations (MPC / multi-sig / HSM) — quorum ceremonies, break-glass procedures, the works
• Look ahead and flag liquidity shortfalls before they become actual problems
• Be the go-to person for custodians, banks, PSPs, market makers, and liquidity providers when something needs sorting

Own the Controls

• Build and maintain the settlement control framework — whitelisting, limits, velocity checks, approval matrices, audit trails
• Run pre-transaction screening (Travel Rule, sanctions, Chainalysis/Elliptic/TRM) and hold anything that looks off
• Be the person audits and regulators talk to when they want to understand how settlement actually works
• Keep runbooks and disaster recovery plans current — and actually tested, not just filed away
• Make sure no single person, including you, can move client funds solo

Handle the Bad Days Well

• Step up when things break — delayed withdrawals, banking outages, custodian downtime, chain halts, forks, anything sketchy
• Lead the freeze/recall/recovery call alongside Compliance, Risk, Legal, Security, and Support
• Turn every incident into a lesson — update the controls so it doesn't happen the same way twice

Build the Team & Make Things Better

• Lead and grow the settlement team across a 24/7 setup — clean handovers, clear escalations
• Push for automation wherever it makes sense — fewer manual steps, better tooling, less room for human error
• Work with Client Support on explaining settlement issues in plain language when clients need answers
• Own the KPIs and be ready to explain them to leadership — and occasionally the Board

Who You Are

• 3–5+ years in settlement, payment ops, treasury, custody, or back-office roles in financial services — with at least a year leading a team
• You've actually done crypto settlement hands-on — exchange, custodian, OTC desk, market maker, prime broker, whatever the setting, it needs to be real experience
• Fluent in English and Russian
• You genuinely get on-chain mechanics — addresses, memos, confirmations, fees, chains, token standards — and you know exactly what happens when one of them goes wrong
• You've owned reconciliation at real volume, not just reviewed someone else's spreadsheet
• You know your way around fiat rails too — SWIFT, SEPA, Fedwire/ACH, Faster Payments, plus stablecoin on/off-ramps
• You've worked inside dual-control, audited environments, and you actually understand why those rules exist
• You've been through a real settlement crisis and lived to tell the story
• You've got sharp attention to detail, but also good judgment — you know what to quietly fix, what to escalate, and what's genuinely worth waking the CFO up for

If you're the person your last team called when something needed to move right, fast, and with zero drama — apply now.

Your responsibilities

• You will run production for an art team of 40 to 50 people and report to Lead Games Producer. Budgets, schedule and hours all sit with you. The Art Lead owns the creative decisions. You own everything that makes the work land on time and on budget.
• You will know what every artist is working on, how many hours it took and whether that number was reasonable. When a project starts slipping you find out first, well before the deadline passes.
• This is a hands on management job. We need someone who cuts through the noise and setbacks, and collects and analyzes the data that drives improvement.
•  
• What you will do
• Budget art projects. Hours, cost and headcount for each game, from concept through to final delivery.
• Keep an eye on production schedules for several games running at the same time.
• Track Kimai hours per person and per task. Know where the time actually goes and challenge it when the numbers do not add up.
• Review deliverables from every team member against spec and deadline. Symbols, backgrounds, characters, UI, animation, and more.
• Report weekly with real figures. Hours per game, cost per asset, estimate against the goals.
• Manage 40 to 50 people day to day. Monitor their workload, catch their blockers, make sure they stick to the priorities and always be ready to have the difficult conversation when someone is late.

Our requirements

• At least 4 to 5 years in project or production management inside a games company
• Experience running a large art team or a large pipeline (40-50 people)
• Knowledge of animation deliverables (Skeletal and Spine animation, VFX, timing, export pipelines)
• Knowledge of illustration deliverables (Concept, symbols, backgrounds, characters, UI, marketing assets)
• Experience owning art budgets and schedules from start to finish
• Strong with numbers: build estimates, track spend and explain variance
• Advanced Excel and Google Sheets (build the model yourself)
• Fluent with Claude and other AI tools
• Experience with Jira or equivalent and time tracking tools (they run on Kimai)
• Fluent Polish and good English at B2 or above
• Direct communicator comfortable addressing late or off-spec work and informing management about slipping dates
• Track Kimai hours per person and per task (Kimai time tracking tool)
• Fluent with Claude and other AI tools (AI tools usage across company)

Optional

• You worked in art or animation yourself before moving into production.
• You have scaled an art pipeline while headcount was growing quickly.
• You have managed teams that were partly remote.

What we offer

• B2B contract, rate depending on experience
• Real authority over schedule and budget
• Flat structure with direct access to the Art Lead, the Lead Games Producer and the CEO. Decisions take days, not months.

Benefits

• sharing the costs of sports activities
• flexible working time
• integration events
• no dress code

About Us

• GameCode was founded in 2017.
• We build online slot games for regulated markets in the USA, Canada, the UK and other territories.
• The company is over 100 people and the art team alone is 40 to 50 artists.
• We release a lot of games. That team is where most of the work happens.

We are – a growing e-commerce company with around 40 employees, specializing in customizable stationery. As a wholly owned subsidiary of MYPOSTER, we combine emotional design with digital expertise – from AI-powered personalization in the configurator to automated production. We design our processes ourselves, thoughtfully and with meticulous attention to detail. We combine structured quality with the spirit of a start-up: short communication channels, plenty of creative freedom, and a team that works together.

You analyze A/B tests, heatmaps, and funnels, deriving optimizations to skyrocket our conversion rate.

You conduct user tests and customer surveys to validate your designs not only quantitatively but also qualitatively.

You develop AI-powered prototypes for new ideas and strategies, enabling us to quickly validate them hands-on.

You build, maintain, and expand our design system as the foundation for an AI-first product development process.

When AI reaches its limits, you create your own designs in Figma for complex topics.

You evaluate new ideas regarding feasibility and effort from a UX perspective and ensure they deliver real added value to users.

WHAT YOU BRING

You have at least 5 years of experience in UX/UI design – ideally, advanced knowledge as a senior with experience in the B2C e-commerce environment.
You have comprehensive skills in All phases of the design process – from research and design to testing

You have experience in evaluating metrics, usage data, and A/B results, and can derive concrete hypotheses and design decisions from them, as well as measure the impact of your ideas

You are passionate about building variations, testing them quickly, and bringing features live

You can translate complex design requirements into a simple, user-friendly UI, always prioritizing the user perspective

You enjoy trying out new AI tools and finding clever ways to make processes faster and smarter

You'll have complete design responsibility for our online shop and determine how millions of customers experience our product.

You'll use insights from tests, analyses, and user feedback to develop targeted features that noticeably boost our conversion rate.

Your prototypes won't get lost in a drawer; they'll be launched and their results measured in short cycles.

What You Can Expect From Us

No ego trips, no downtime: Here, what counts is proactive thinking, hands-on work, and shaping the future.

Development that suits you: Quarterly goals, feedback sessions, and professional development without budget caps—with room for initiative and on-the-job growth.

AI as a tool: You'll work with the latest tools and automate wherever possible.

Family-friendly and self-determined work style: Trust-based working hours and flextime for a work schedule that fits your everyday life.
Staying healthy and mobile: 

EGYM Wellpass, Jobrad or MINI leasing – the choice is yours!
Team events with character: We celebrate successes and our team spirit at summer parties, pub quizzes, barbecues, and moreimage (9).png"
 

5 years of experience in UX/UI design 

advanced knowledge as a senior with experience in the B2C 

e-commerce environment.
You have experience in evaluating metrics, usage data, and A/B results, and can derive concrete hypotheses and design decisions from them, as well as measure the impact of your idea
You enjoy trying out new AI tools and finding clever ways to make processes faster and smarter

Must have - B2C e-commerce portfolio !!!

Role

We are looking for a hands-on Social Media Marketing Specialist to own Dokport’s social media growth and content distribution.

This is a broad SMM role covering content strategy, content production, channel growth, community engagement, influencer collaborations, trend research, and performance analysis. We are looking for someone who can grow attention and acquisition, not only maintain a posting calendar.

Responsibilities

• Build and execute Dokport’s social media strategy
• Grow our presence across relevant platforms such as Instagram, TikTok, YouTube, LinkedIn, and others
• Research trends, formats, competitors, creators, and topics relevant to healthcare
• Develop content ideas, formats, scripts, and publishing plans
• Coordinate or create short-form video, static content, educational posts, and other social formats
• Identify content opportunities based on current trends and audience interests
• Manage organic distribution and improve reach, engagement, followers, and conversions
• Find and coordinate collaborations with creators, influencers, healthcare professionals, and relevant partners
• Repurpose strong content across multiple platforms
• Test different hooks, formats, topics, creatives, and publishing approaches
• Monitor comments, audience feedback, and community signals
• Track performance and identify which content contributes to traffic, patient acquisition, leads, and revenue
• Work closely with founders, healthcare professionals, designers, and performance marketing

Requirements

• Proven hands-on experience growing social media accounts or brands
• Strong understanding of organic social media growth
• Good understanding of TikTok, Instagram, YouTube, LinkedIn, and short-form content
• Ability to identify trends and turn them into relevant content quickly
• Strong content instincts: hooks, storytelling, formats, positioning, and distribution
• Experience working with creators or influencers
• Ability to analyze performance and make decisions based on data
• Comfortable independently generating ideas and executing them
• Strong English communication skills
• Comfortable working in healthcare or another regulated environment

Preferred

• Experience in healthcare, wellness.
• Experience growing accounts from an early stage
• Experience with influencer or creator marketing
• Understanding of performance marketing and how organic social supports paid acquisition
• Experience connecting social media activity to traffic, leads, customers, or revenue

What We Offer

• Ownership of Dokport’s social media strategy
• Freedom to test new channels, formats, and ideas
• Direct impact on brand growth and patient acquisition
• Close collaboration with founders and the broader marketing team
• Flexible working setup
• Competitive salary or contractor rate, depending on experience and engagement model

Role

We are looking for a hands-on Senior SEO Specialist to own organic growth for Dokport, a Finnish digital healthcare platform.

This is a broad SEO role covering technical SEO, on-page SEO, content strategy, link building, website authority, and international SEO. We are looking for someone who understands the full SEO picture, not only content production.

You will be responsible for identifying opportunities, building the strategy, and executing or coordinating the work needed to grow qualified organic traffic and patient acquisition.

Responsibilities

• Build and execute Dokport’s overall SEO strategy
• Identify growth opportunities across technical, on-page, content, and off-page SEO
• Conduct keyword, competitor, search-intent, and backlink research
• Optimize service pages, landing pages, metadata, internal linking, and website structure
• Develop SEO content strategy and briefs based on search demand and commercial opportunities
• Manage technical SEO, including crawling, indexing, canonicals, sitemaps, redirects, structured data, and website performance
• Build website authority through link building, outreach, partnerships, link reclamation, and other relevant methods
• Analyse competitors’ backlink profiles and identify new opportunities
• Manage multilingual and international SEO
• Work closely with developers, healthcare professionals, and content creators
• Ensure health-related content is accurate, trustworthy, and appropriate for a regulated healthcare environment
• Track rankings, organic traffic, backlinks, conversions, consultations, and revenue
• Continuously test and improve organic landing-page performance
• Monitor changes in search, including AI search and GEO

Requirements

• Strong hands-on experience across technical SEO, on-page SEO, content SEO, and off-page SEO
• Strong understanding of link building and website authority growth
• Experience with keyword, competitor, backlink, and search-intent research
• Strong technical SEO knowledge
• Ability to work effectively with developers
• Experience growing organic traffic, leads, customers, or revenue
• Experience with tools such as Google Search Console, GA4, Ahrefs, Semrush, Screaming Frog, or similar
• Experience with multilingual or international SEO
• Ability to independently identify priorities and execute
• Strong English communication skills

Preferred

• Experience in healthcare, telemedicine, finance, insurance, or another regulated industry
• Understanding of medical / YMYL SEO
• Familiarity with AI search / GEO
• Experience connecting SEO work to business outcomes such as leads, consultations, revenue, or CAC

What We Offer

• Full ownership of Dokport’s organic-growth strategy
• Broad responsibility across all major areas of SEO
• Direct impact on patient acquisition and company growth
• Close collaboration with founders, developers, and healthcare professionals
• Flexible working setup
• Competitive salary or contractor rate, depending on experience and engagement model

We are looking for a strong QA Automation Engineer to join our core team on a permanent basis.
The product domain includes authentication, user data, integrations, and subscription/payment-related backend flows.

What you will do
 

• Write and maintain JS-based automated tests for API layer.
• Extend and support the existing Cucumber BDD suite.
• Keep automated checks stable in CI against AWS-hosted services.
• Investigate failures across services and file actionable defects.
• Maintain test documentation in Confluence and JIRA.
• Work with an international team in English.

What we need
 

• Strong JavaScript skills and solid commercial experience with automated testing.
• Basic understanding of Cucumber or equivalent BDD experience.
• Good understanding of HTTP, REST APIs, and Postman or equivalents.
• Experience maintaining test plans, test cases, and defects.
• Git in daily use.
• Confidence working with existing codebases.
• English for day-to-day technical communication.

Nice to have
 

• Hands-on Cucumber or equivalent BDD experience.
• AWS or another public cloud.
• Docker.
• Basic SQL.
• Chrome DevTools.
• Load or performance test automation.
• Background in subscription, payments, streaming, or other high-traffic product environments.
• Experience integrating AI tooling in test automation.

Why this role may be interesting
 

• Direct work with JavaScript automation, REST APIs, and a distributed high-load production backend.
• Exposure, where relevant, to AWS, Docker, and CI/CD in a live product environment.
• Long-term role with a strong team and clear ownership of the automation suite.

Engagement details
 

• Format: indefinite, full-time.
• Focus: own and grow the QA automation suite as part of the core team.

A backend-focused engineering position on a transformation project for an international travel company. The engineer will own features end-to-end - from planning and design through building, testing, and release.

Key Responsibilities 

-Own features end-to-end (plan, design, build, test, release) 

-Build and maintain Ruby on Rails systems 

-Contribute to full-stack work (Rails-heavy, with frontend involvement as needed) 

-Write tested, high-quality code 

-Use AI coding agents to maximize efficiency 

-Participate in code reviews 

-Maintain systems and resolve production issues 

-Collaborate with Product, Design, and Quality Engineering teams

Required Qualifications 

-Proficiency in Ruby on Rails with production experience 

-Strong database schema design and data modeling skills 

-RESTful API design experience 

-PostgreSQL and AWS infrastructure knowledge 

-Demonstrable experience with AI coding agents, or strong enthusiasm to adopt them 

-Good English 

-Team-oriented with strong communication skills 

-Pragmatic about speed/quality/scope tradeoffs

Tech Stack 

-Ruby on Rails, PostgreSQL, AWS, Next.js, Vercel. Trunk-based development with CI/CD and multiple daily deployments. 

Nice to Have 

-E-commerce or travel platform experience 

-An eye for UX/design 

-Travel enthusiasm

We offer:

• Attractive financial package

• Challenging projects

• Professional & career growth

• Great atmosphere in a friendly small team

RedCore is an international business group that creates technological solutions for digital markets. Our products and services cover fintech, marketing, e-commerce, customer service, communications and regulatory technologies. 

We are looking for a Monitoring Manager to join our team!

Requirements:

- Understanding of the basics of search engines;
- Ability to search for necessary information on different GEO;
- Basic knowledge of Google docs/sheets, Google Analytics.

Will be plus:

- English language skills

Responsibilities:

- Collection and processing of data in areas requiring monitoring.
- Prompt submission of complaints when violations are identified.
- Interaction with platforms/support regarding complaint review processes.
- Analysis of identified violations and their classification by type and priority.
- Interaction with platforms/support regarding complaint review processes. (duplicate in original text)
- Tracking the effectiveness of submitted complaints and their outcomes.
- Maintaining and updating an internal database of websites.
- Researching new methods for submitting complaints.

What are the conditions and bonuses?

☘️An exciting and challenging job in a fast-growing product company, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance and other;

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed;

📍Beautiful offices in Warsaw, Limassol work remotely or on-site with comfort and enjoy the opportunity to build a network of connections with professionals day by day;

🧑🏻‍💻Laptop & all necessary equipment for work according to the ecosystem standards;

🏖Paid vacations, personal events days, days off;

🫖Paid sick leave;

👨🏻‍⚕️Medical insurance;

💵Referral program enjoy cooperation with your colleagues and get the bonus;

📚Educational support by our L&D team: internal and external trainings and conferences, courses on Udemy;

🗣Free internal English courses;

🧘Sport benefit;

🦄Multiple internal activities: online platform for employees with quests, gamification and presents for collecting bonuses, RedCore talks club for movie and book lovers, board games cozy evenings, special office days dedicated to holidays;

🎳Company events, team buildings.

Team Lead Infrastructure / NOC-SRE Lead

We are hiring for our partner — an international crypto payments company — and are looking for a Team Lead Infrastructure / NOC-SRE Lead to lead an infrastructure and production operations team.

This is a hands-on leadership role: you’ll manage the NOC / Infrastructure / SRE team, improve operational processes, own incident management and escalations, while staying technically involved in complex Linux, networking, and database troubleshooting.

What you’ll do

• Lead and develop the NOC / Infrastructure / SRE team

• Organize shifts, on-call rotations, escalations, and team coverage

• Own incident management: alerts, routing, SLA/SLO, escalation, and postmortems

• Drive RCA and problem management

• Build and improve operational processes in Jira, Confluence, KB, and task trackers

• Improve monitoring, alerting, and observability

• Coordinate with Development, QA, DevOps, and Product teams

• Take hands-on involvement in complex production incidents

• Troubleshoot Linux, networking, and databases at L3 level

• Create and maintain documentation, runbooks, procedures, and operational standards

• Mentor engineers and ensure the quality and consistency of the team’s work

• Continuously improve infrastructure reliability and operational efficiency

What we’re looking for

• Previous experience as a Team Lead, NOC Lead, Infrastructure Lead, or SRE Lead

• Proven experience managing and mentoring an engineering team

• Experience supporting production and business-critical services

• Strong background in incident management and escalation processes

• Practical experience with RCA, postmortems, and problem management

• Solid Linux administration background

• Strong networking fundamentals: TCP/IP, routing, DNS, DHCP, NAT, VPN

• Experience with monitoring and alerting tools such as Zabbix, Grafana, Prometheus, Alertmanager, New Relic, Splunk, or similar

• Experience with Jira, Confluence, knowledge bases, or similar tools

• Ability to build effective processes without unnecessary bureaucracy

• Willingness to remain hands-on, not purely managerial

• English sufficient for technical documentation and communication

Nice to have

• SRE background

• Kubernetes / Docker

• Terraform / Helm / GitLab CI

• Cloud experience: GCP / AWS / Azure

• PostgreSQL / MySQL

• MikroTik / L2-L3 switches / VLAN

• Experience with 24/7 production operations

• Background in fintech, crypto, highload, or e-commerce

If you’re an experienced infrastructure leader who can combine team management, operational excellence, and deep technical expertise, we’d love to hear from you.

We are hiring for our partner — an international crypto payments company — and are looking for a strong Senior Linux System Administrator to join their production infrastructure team.

You’ll work on a B2B crypto payments product, supporting reliable and secure production infrastructure. This is a hands-on role focused on Linux, networking, infrastructure troubleshooting, system performance, and production stability.

This is not a Helpdesk, Windows/M365, or end-user support position.

What you’ll do

• Administer and maintain production Linux servers

• Perform L3 troubleshooting across Linux, networking, services, and databases

• Monitor and troubleshoot CPU, memory, disk, I/O wait, inodes, load average, and systemd

• Work with TCP/IP, routing, NAT, firewalls, and traffic management

• Configure and support OpenVPN / WireGuard

• Work with iptables / nftables

• Administer and troubleshoot MikroTik

• Support PostgreSQL / MySQL, including backups, restores, users, and basic diagnostics

• Investigate incidents and perform Root Cause Analysis (RCA)

• Maintain technical documentation, runbooks, and knowledge bases

• Perform production changes carefully with change plans, backups/snapshots, and rollback procedures

• Automate routine tasks using Bash, Python, or Ansible

What we’re looking for

• 5+ years of Linux system administration experience

• Strong hands-on experience with Ubuntu / Debian / CentOS

• Confident with systemd, journalctl, dmesg

• Strong performance troubleshooting skills: OOM, CPU pressure, I/O wait, disk pressure, inodes

• Solid understanding of TCP/IP, routing, NAT, and firewalls

• Experience with OpenVPN or WireGuard

• Experience with iptables or nftables

• Hands-on experience with MikroTik

• Experience supporting PostgreSQL / MySQL, including backup and restore

• Understanding of production safety and change management

• Experience with RCA / problem management

• English sufficient for reading technical documentation

Nice to have

• Ansible

• Bash / Python scripting

• Nginx / HAProxy

• Experience with highload, crypto, fintech, payments, hosting, or telecom

Details

Schedule: shift-based

• 08:00–17:00

• 09:00–18:00

• 15:30–00:30

If you enjoy solving complex production incidents, digging into root causes, and keeping infrastructure stable and reliable in a crypto payments environment, we’d love to hear from you.

We are hiring for our partner — an international crypto payments company — and are looking for an IT Infrastructure / L3 Support Engineer to join an established infrastructure team.

You’ll work on a B2C product, supporting internal and production infrastructure across Linux, Windows, Microsoft 365, identity management, networks, databases, backups, and containers.

This is a hands-on L3 infrastructure role for a system administrator who enjoys solving technical issues across different areas rather than focusing on just one technology.

What you’ll do

• Administer Linux and Windows guest operating systems

• Provide L3 infrastructure support and troubleshoot complex technical issues

• Administer Microsoft 365 environments

• Manage Microsoft Entra ID / Azure AD

• Manage users, accounts, permissions, licenses, and corporate access

• Administer Slack and related integrations

• Manage domains and corporate working environments

• Support corporate networks and network security

• Work with pfSense / MikroTik

• Support databases and business applications

• Perform backup and restore operations

• Work with Docker / containers and basic automation

• Monitor infrastructure, investigate logs, and troubleshoot incidents

• Maintain technical documentation, task trackers, and knowledge bases

What we’re looking for

• 3+ years of experience in System Administration / IT Infrastructure

• Strong hands-on experience with Linux and Windows

• Practical experience with Microsoft 365 administration

• Experience with Microsoft Entra ID / Azure AD

• User, account, access, and permission management

• Good understanding of corporate networking

• Hands-on experience with pfSense or MikroTik

• Experience supporting databases, including backup and restore

• Experience with Docker or similar container technologies

• English sufficient for reading technical documentation

• Comfortable working in a shift-based schedule

• Strong attention to detail and ability to follow established processes

Nice to have

• Slack administration

• Entra ID ↔ Slack integrations

• Bash / Python scripting

• Ansible

• Experience in a B2C / product company

• Experience with task trackers and knowledge bases

• Nginx / HAProxy

Details

Schedule: shift-based

• 01:30–09:30

• 09:00–18:00

• 17:00–01:00

You’ll join an established team and work across a broad infrastructure stack, combining system administration, L3 troubleshooting, identity management, networking, and infrastructure support.