Jobs at Djinni

🚀 AIMPROSOFT is looking for a Java Tech Lead / Solution Architect (React , Telecom) 

Aimprosoft, a fast-growing IT company, is looking for a Java Tech Lead / Solution Architect (React , Telecom) on a contract basis (≈ 4+ months) an international project in the Telecommunications / BSS-OSS domain. 

This is a senior hands-on role for an experienced Java engineer who combines solution architecture, technical leadership, and production development. You will join the project first, shape the technical foundation during discovery, and then lead a team of three Full-Stack Java Developers through the MVP delivery. 

The role is approximately 50% architecture and technical leadership / 50% hands-on production coding. 

🎯 About the project & role: 

The client is a UK wholesale internet service provider supplying broadband, Ethernet, and connectivity services to resellers and partners. 

The project is Phase 1 of a new customer and admin portal and integration platform (BSS/OSS) designed to replace manual and legacy processes and become the first production slice of the client's target platform. 

The technical environment includes: 

• Java & Spring Boot 
• React & TypeScript 
• Microservices and event-driven architecture 
• PostgreSQL 
• BPMN / workflow orchestration 
• OAuth2 / OIDC and Auth0 
• AWS 
• Docker and Kubernetes 
• CI/CD 
• TM Forum Open APIs 

🎯 Your key responsibilities will include: 

• Owning the solution architecture for the client portal and integration platform 
• Leading the initial technical discovery and helping define the MVP implementation approach 
• Designing domain models, APIs, integration flows, and event-driven components 
• Writing production Java / Spring Boot code, particularly for technically complex parts of the platform 
• Leading and mentoring a team of three Full-Stack Java Developers 
• Reviewing code and establishing engineering standards and quality gates 
• Guiding the React portal architecture and UI standards 
• Designing integrations with external and legacy systems 
• Making and documenting architecture decisions using ADRs and C4 diagrams 
• Working closely with DevOps and QA on AWS environments, CI/CD, contract testing, and integrations 
• Communicating directly with the UK client and third-party technical teams 
• Presenting technical progress through regular live demos 

🔥 What We Need From You: 

• Hands-on experience in the Telecommunications domain, ideally with ISP, BSS/OSS, broadband, order management, product catalogues, or service qualification 
• Experience with TM Forum Open APIs 
• 8+ years of commercial Java development experience 
• 2+ years as a Tech Lead, Solution Architect, or in a similar technical leadership role 
• Strong hands-on experience with Spring Boot 
• 3–4+ years of hands-on experience with React / ReactJS and TypeScript 
• English: Upper-Intermediate (B2+) / Advanced (C1) for direct communication with a UK client 
• Experience designing and delivering microservice and integration-heavy systems 
• Strong understanding of Domain-Driven Design (DDD) and event-driven architecture 
• Ability to review frontend code, guide React application architecture and contribute to frontend development when needed 
• Practical experience with reliability and integration patterns such as Transactional Outbox, idempotency, retries, and asynchronous processing 
• Experience designing REST APIs and OpenAPI-based contracts 
• Experience integrating with multiple external systems and third-party APIs 
• Practical experience with Camunda, Flowable, or a similar workflow / orchestration engine 
• Practical experience with OAuth2 / OIDC, Spring Security, and RBAC 
• Hands-on experience with AWS and containerized environments (EKS or ECS, Docker) 
• Understanding of CI/CD and modern software delivery practices 
• Experience with AI-assisted development tools such as Claude Code or Cursor 
• Experience leading developers through technical planning, code reviews, mentoring, and delivery 

📌 Nice to have: 

• Experience with PostgreSQL, Flyway, or Liquibase 
• Experience with Kafka or AWS SQS 
• Experience with Terraform or AWS CDK 
• Understanding of multi-tenant architectures 
• Experience with Auth0 
• Experience with telecom/network systems such as RADIUS, NetBox, or IPAM 
• Experience with UK broadband ecosystems such as Openreach, PXC, or CityFibre 
• Experience leading technical discovery phases or architecture spikes 

💼 What We Offer: 

• Official military deferment (reservation); 
• A competitive salary that appreciates your skills and experience; 
• Opportunity to join a strategically important pilot team with long-term project prospects 
• Work on modern cloud-native products that deliver real-world impact 
• Exposure to AI-powered development practices and enterprise-scale engineering 
• Open environment where your ideas, technical expertise are valued 

About the role

We are building an MVP of a SaaS platform for consultants and need a UX designer to shape how users work with it from day one.

Responsibilities

• Design user flows, wireframes, and prototypes for the MVP
• Turn PRDs and epics into clear, usable interfaces
• Work with the Information Architect on navigation and content structure
• Hand off designs to engineers and support them during implementation
• Test solutions with users and iterate quickly

Requirements

• 3+ years in UX / product design, with B2B SaaS or complex web products in your portfolio
• Strong skills in Figma and interactive prototyping
• Experience designing data-rich or knowledge-heavy interfaces
• Ability to work autonomously in a small, distributed team
• Upper-Intermediate English
• Portfolio is required

We offer

• Join an early-stage product and influence it from the MVP stage
• Remote work in a distributed international team
• Flexible cooperation format: full-time, part-time, or contract
• Compensation discussed individually

We’re building and scaling a high-volume, performance-driven newsletter portfolio and are looking for a Senior Email Marketing Manager to fully own newsletter growth, engagement, and monetization.

This role is for someone who understands newsletters as a revenue channel, not just a publishing task.

You’ll work closely with authors, AI writers, designers, and monetization partners to ensure every send is optimized for opens, clicks, and revenue, while maintaining strong editorial quality.

Your primary mission:
 

Key Responsibilities

Email & Newsletter Performance Ownership

• Own end-to-end newsletter strategy, publishing, and optimization
• Optimize subject lines, preheaders, layouts, CTAs, and content flow
• Maintain consistent, high-quality publishing schedules across all newsletters
• Review, QA, and approve all outgoing content before sending

 Monetization & Advertising Optimization

• Integrate ads natively within newsletters to maximize CTR and revenue
• Test ad placements, formats, and messaging without harming reader trust
• Analyze performance and continuously improve monetization strategy

Scaling & Team Leadership

• Collaborate closely with writers, AI tools, designers, and growth teams
• Build repeatable processes, guidelines, and quality standards
• Provide weekly performance insights and improvement recommendations
   

Requirements

• Strong experience in email marketing
• Deep understanding of email performance metrics: open rate, CTR, conversions, revenue per send
• Hands-on experience managing multiple email campaings at scale
• Comfortable using AI tools
• Strong editorial and layout instincts (formatting, hierarchy, readability)
• Excellent organization — able to manage 15–20+ newsletters simultaneously
• Strong QA mindset: zero tolerance for broken links, typos, or formatting errors
• High level of English: C1
   

Nice to Have

• Experience with platforms like Beehiiv, Substack, Ghost
• Experience working with ad monetization, sponsorships, or affiliate content
• Background in content-led growth or digital publishing
• Experience scaling multiple content brands or media products

Where You'll Create Impact

• Build!
• Embed on named customer projects and own them end to end: discovery, design, build, deploy and verify
• Build migration and integration pipelines on Temporal that are idempotent, resumable, and auditable
• Model and load customer accounting data into Postgres correctly, including reconciling against their existing system
• Build internal tooling so recurring one-offs stop being one-offs
• Feed patterns back into the core product, and productize or hand off anything that becomes permanent
• Compress the path from “customer requested” to “shipped"

What Sets You Up for Success

• Hardcore work ethic and high agency
• 5+ years shipping production full stack software, end to end and unsupervised
• Django and DRF, plus Postgres beyond ORM defaults. You read query plans and you have run migrations against live data with customers on it
• Next.js and React with TypeScript
• Durable workflow experience. Celery preferred
• Direct customer exposure on past experiences. You have sat with a customer, scoped the problem with them, and shipped against it
• Experience with third party APIs, webhooks, rate limits, reconciling two systems that disagree

Nice to Have

• Accounting, ERP, or fintech domain knowledge: double-entry, chart of accounts, close, AP/AR, revenue recognition
• Prior forward deployed, applied, or special projects experience
• Judgment about when to ship a script versus build a system

Why You’ll Thrive Here

• Significant equity ownership in one of the top AI companies in the world
• You’re joining early and will grow with DualEntry
• Your feedback shapes the product directly
• High-speed, high-trust environment with high expectations

Meet the Team

• Ignacio shaped the baseline of our integration framework from scratch in a single weekend, then spent most weekends - while coordinating the team - shipping what was never on the roadmap: webhooks, a search engine for millions of transactions, and Puma itself
• Marcin took a non-existent tax structure and built it end to end, setting the north star for how the team keeps improving it on top of it; modular and robust, always setting the bar for the rest
• Puhiza grew her team from one to full capacity, while owning our integration framework. The queen of I/O on our platform
• Danylo took ownership of our bank connection engine end to end and rebuilt it from scratch over a weekend

Compensation & Benefits

• Equity: $50,000 - $80,000
• Base salary: $150,000 - $280,000
• Remote-first team - the fastest team you will have ever worked with
• Home internet, co-working space & office setup support
• Flexible PTO (27 days incl. public holidays)
• Unlimited AI token usage
• AI skills development & enablement
• Learning & development budget for courses, certifications & language learning
• Visa sponsorship and relocation support for a move to NYC (after 2 years’ tenure)
• In-person team meetups (our last ones: Lisbon, Vienna, Warsaw, Cyprus, and more!)

Project Description:

The Governance Team is looking for an Infographic / Presentation Designer to support the creation, beautification, and professional polishing of business presentations and reports.

The main focus of the role is to transform business information, data, and complex ideas into clear, visually engaging, and professional PowerPoint presentations tailored to different audiences, including management and leadership.

The designer will work closely with R&A team members and business stakeholders to ensure that presentations effectively communicate key messages through strong visual storytelling, infographics, layouts, and consistent corporate design.

The role also includes formatting and visual improvement of Microsoft Word documents and, where required, supporting content presentation in Confluence.

Responsibilities:

- Create, beautify and professionally polish Microsoft PowerPoint presentations in line with corporate design standards and business requirements.
- Transform complex business information, data, and ideas into clear, concise, and engaging visual stories.
- Create infographics, diagrams, charts, timelines, process flows, and other visual elements for presentations and reports.
- Improve slide layouts, structure, visual hierarchy, readability, and overall presentation consistency.
- Adapt presentation style and level of visualization depending on the target audience, including senior management and leadership.
- Create and maintain reusable PowerPoint slides, presentation templates, and visual assets.
- Work with existing presentations and improve them while preserving the original business message and content.
- Compile, format, and visually improve Microsoft Word documents and reports.
- Prepare and edit visual assets using Adobe Photoshop when required.
- Collaborate with Governance team members and business stakeholders to understand requirements and deliver materials within agreed timelines.
- Ensure consistency, accuracy, attention to detail, and high visual quality across all delivered materials.

Mandatory Skills Description:

- Strong Microsoft PowerPoint skills with proven experience in professional presentation design, beautification, and polishing.
- Strong understanding of presentation design principles, including composition, layout, typography, visual hierarchy, alignment, and consistency.
- Ability to transform complex information and data into clear and engaging infographics and visualizations.
- Experience creating and formatting charts, diagrams, process flows, timelines, and other business graphics.
- Good knowledge of Microsoft Word, including professional document formatting and layout.
- Working knowledge of Microsoft Excel, particularly for handling data used in presentations, charts, and reports.
- Good working knowledge of Adobe Photoshop for editing and preparing visual assets.
- Ability to follow corporate branding guidelines and presentation templates while maintaining a high level of visual quality.
- Strong attention to detail and ability to work with multiple presentation and document requests.

Numerical Technologies is a leading provider of custom software solutions and services specializing in risk, limits, and regulatory capital. Right now, we are looking for a Front-end Developer to join our team.
 
What will you be doing?
As part of the team, you will contribute to the development of this internal product, focusing on building and improving user-facing features. You will maintain and refactor existing components, ensuring a smooth, responsive, and accessible user experience. Your responsibilities will include writing clean, scalable, and maintainable front-end code, integrating with internal and third-party APIs, and collaborating closely with designers and the product team. You will also take part in code reviews, testing, and continuous improvements to the front-end architecture.
 
What are we looking for?
 

• 5+ years experience in a Front-end Developer role
• Strong experience with React and modern front-end development practices
• Proficiency in TypeScript and component-based development
• Experience with Vite or similar modern build tools
• Solid understanding of React Router v6 for client-side routing
• Practical experience with design systems and component libraries
• Good collaboration skills and experience working closely with designers and product teams
• Upper-Intermediate level of English or higher

 
We offer:
 

• Competitive compensation depending on experience and skills
• Regular assessments and salary reviews
• Paid personal days
• Health insurance
• Mental health support program
• English/Polish/Portuguese language classes
• Flexible working schedule

Project Description

A B2B marketing analytics platform for LinkedIn advertisers wants to know whether the early signals of an ad campaign can predict its outcome months ahead. Small B2B advertisers close only a handful of deals per year, so standard attribution has too little data to work with. The proof of concept tests a different approach on the platform's historical data across many advertisers. Engagement and website signals from the first 7-21 days of a campaign are combined into a surrogate index that predicts later pipeline outcomes and states how confident the prediction is.

The PoC is time-boxed to 5-6 weeks and ends with a Go or No-Go decision backed by numbers.

Client Description
A B2B marketing analytics platform for LinkedIn

• A B2B marketing analytics platform for LinkedIn advertisers wants to know whether the early signals of an ad campaign can predict its outcome months ahead. Small B2B advertisers close only a handful of deals per year, so standard attribution has too little data to work with. The proof of concept tests a different approach on the platform's historical data across many advertisers. Engagement and website signals from the first 7-21 days of a campaign are combined into a surrogate index that predicts later pipeline outcomes and states how confident the prediction is.
   

Requirements:

• 5+ years of applied data science or statistics at a senior level.
• Strong command of regression modeling, including regularized and hierarchical (multilevel) models.
• Proven experience with small or sparse datasets and with probability calibration.
• Rigorous validation practice: temporal splits, leakage prevention, overfitting control.
• Python (pandas, scikit-learn, statsmodels) and SQL.
• Ability to explain uncertainty to non-technical stakeholders.
• English - upper-intermediate.

Nice to have

• Bayesian tooling such as PyMC, Stan or bambi.
• Familiarity with surrogate index and proxy metric methods, such as the work of Athey, Chetty, Imbens and Kang.
• B2B marketing analytics: attribution, account-based marketing, LinkedIn Ads, CRM pipeline data.
• Holdout design, controlled experiments and sequential testing.
  Statistical process control.
• Part-time, 0.5-0.8 FTE, about 20-32 hours per week.
  5-6 weeks, starting in October 2026, exact date to be confirmed.
• Possible continuation into productization if the PoC succeeds.

Responsibilities:

• Define, together with the client and a business analyst, what counts as campaign success, the outcome window and the cut-off between signals and outcome.
• Design the analytical dataset: candidate signals, outcome labels, exclusion rules and safeguards against future information leaking into the signals. A Python data engineer builds the dataset in ClickHouse to this design.
• Build the surrogate index as a regularized or hierarchical model, with signal weights shared across advertisers and adjusted per advertiser in proportion to its own data volume.
• Validate the model on campaigns it has not seen: temporal backtesting and leave-one-advertiser-out evaluation, with AUC, Brier score and calibration curves.
• Compare the model against the current practice of judging campaigns by CTR and CPC, and measure how prediction quality changes between day 14 and 21.
• Run error analysis, source ablation and learning curves to show which data is missing for a reliable forecast.
• Present weights, patterns and uncertainty to the team and reccomend Go or No-Go for the future phase.
   

YELK is a web development outsourcing agency that provides scalable digital solutions for SMEs and enterprise clients across the EU and the USA. We specialize in delivering custom web development, design, and AI integration services.

We are looking for a Lead Generation Specialist who will work primarily on UpWork. As a lead generator, you’ll help us generate qualified sales opportunities from Upwork, qualify customers, and assist the Sales Manager in closing deals.

Responsibilities:

• Scan & qualify opportunities on UpWork across different categories: UI/UX Design and Web Development.
• Create high-quality bids and proposals.
• Track conversion rates, review analytics, and keep the CRM & pre-CRM up to date.

• Qualify customer replies and book calls with SQL.

   

Requirements:

• At least 1 year of experience in UpWork lead generation.
• Upper-intermediate to advanced English proficiency, with fluent written communication.
• Ability to write concise, value-based proposals.
• Understanding of UX/UI Design and popular frameworks, approaches, and trends in Web Development.
• Deep understanding of lead qualification processes and reply management.
• High proficiency with Google Sheets, including filtering, combining lead databases, using formulas, and preparing .CSV files.

• Experience with HubSpot.

   

Would be a plus:

• Experience with LinkedIn email generation and campaign tools (such as Instantly, Smartlead, or similar), LinkedIn automation tools (such as Lemlist, HeyReach, Phantom Buster), and enrichment platforms (such as FullEnrich or similar).
• Experience in scraping data from various sources, building lead lists, enriching them, and validating emails using automation tools.

We offer:

• Paid 21 days of vacation and sick leave.
• Free morning schedule (start from 9 to 11 am).
• An engaging team environment where your voice is heard and initiatives are supported.
• Market competitive salary and benefits based on conversion rates.
• Educational budget, upskill courses, and workshops.
• 100% remote. 

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.

The future of Web3 starts with you: join us as a Senior Analyst.

Requirements:

— 5+ years in analytics at a Trading Desk, CEX, prop trading or market-making firm — not bank BI analytics
— Deep hands-on knowledge of trading mechanics: P&L attribution, spread, slippage, funding rates, quoting uptime, inventory exposure — candidate knows these metrics from practice, not from textbooks
— Python — mandatory: pandas, numpy, report automation, exchange 
API data processing
— SQL — advanced: window functions, CTEs, time-series aggregations
— Tableau — proficient: calculated fields, blending, workbook publishing
— Grafana — operational dashboard design, alert configuration
— Track record of building P&L, position, and operational reports from scratch for a trading desk
— Ability to define the right KPIs independently without extensive onboarding
— Understanding of crypto exchange mechanics: derivatives, futures, spot/perp

Responsibilities:

— Build and own management reporting — independently, from week one
— Configure and maintain dashboards for real-time operational monitoring with alerting
— Audit existing dashboards and correct inaccurate metrics — including restoring broken monitors
— Independently define KPIs: proposes the structure, does not only execute tasks
— Formulate data requirements and pass requests to the tech team
— Support the reporting cycle (daily / weekly / quarterly) with direct interaction with desk heads
— Document calculation methodology and standardise metric definitions

It will be a plus:

— Experience working with market makers or institutional liquidity providers
— Familiarity with major CEX platforms (OKX, Binance, Bybit)
— Experience integrating external market datasets

Working conditions:

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.
— 22 business days of paid leave.
— Additional days off for national holidays.
— Health insurance.

We are the creators of a new fintech era!
Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,200 professionals united by a shared vision of shaping the Web3 future.
We are building our own blockchain ecosystem, ensuring maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.
Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT, and VISA.

The future of Web3 starts with you — join us as Risk Manager!

 

Requirements:

- 4+ years of experience in risk management, including 2+ years in crypto or digital assets;
- Bachelor's or Master's degree in Finance, Economics, Quantitative Finance, Mathematics, Engineering, or a related field;
- Solid understanding of market microstructure and how trading strategies generate and hold risk exposure;
- Practical knowledge of market risk metrics and methodologies - VaR/CVaR, stress testing, scenario analysis, P&L attribution;
- Proficiency in working with data (SQL), BI tools (Tableau/Grafana), and automating KRIs/reporting;
- Hands-on experience with crypto spot and derivatives markets;
- Knowledge of risk identification methodologies and practical application (SWOT, checklists, environmental analysis, expert assessment);
- Hands-on experience with crypto platforms and DeFi protocols;
- FRM, CFA, PRMIA, or similar certifications are a plus.

Mindset & Soft Skills:
- Proactive and initiative-driven;
- Highly organized with strong attention to detail;
- Comfortable in a fast-paced environment;
- Excellent communication and negotiation skills;
- Balanced and pragmatic decision-making;
- Resilient under pressure;
- Strong mentoring mindset.

Responsibilities:

- Develop, implement, and own the risk framework, including risk appetite and exposure limits;
- Monitor market, liquidity, and counterparty risk;
- Monitor and analyze P&L and risk exposure, distinguishing performance drivers from risk exposure;
- Review risk parameters with the trading and quant teams;
- Conduct stress testing and scenario analysis to evaluate the resilience;
- Define and maintain Key Risk Indicators (KRIs) and early-warning systems;
- Prepare regular risk reports for senior management;
- Coordinate the work of risk analysts and provide mentorship;
- Support incident response and crisis management for trading-related events;
- Collaborate with Strategy, Ops, and Engineering teams to ensure comprehensive risk identification and mitigation planning.

Work conditions

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.

Job Description:
 

• Bachelor of Science in Computer Science, Electrical Engineering, or a related field plus heavy experience in low-level network programming.
• Mastery of Rust (for DPDK tre_flow), and Go for high-performance networking software.
• Solid understanding of Linux network stack internals, socket layers, and packet processing.

• Network feature development.

   

  Nice to Have Skills

• Experience porting custom network daemons (Goblin, Comet) to new CPU architectures.

   

Job Responsibilities:
 

• Port internal networking daemons and tools (Goblin, Comet, golinject) to run natively on ARM64 host environments.
• Local Environment & Stack Setup: Stand up and maintain a local development environment running the entire Akamai Compute (Linode) stack (e.g., running on a single VM owned by the developer).
• Debugging & ARM Porting: Proactively identify and debug complex issues across the software stack (including VMs, VM disks, and networking), and port existing software stack components to the ARM architecture.
• Network Feature Development: Develop and enhance networking capabilities, including adding support for protocols (such as DHCPv6) into networking daemons and offloading network stack processing into NICs.
• Performance & Profiling: Conduct performance tuning and packet-throughput profiling on high-speed network interfaces.
• Cross-Team Collaboration: Proactively flag identified issues and collaborate with other engineering teams to drive resolutions.
   

Department/Project Description:

Seeking a Mid-Level Software Engineer to join the Platform Networking Team. The team builds low-level networking software, driver integrations, and custom daemons powering our data center network fabric. You will port network daemons and enable next-generation SmartNIC and NIC hardware support on our new ARM server fleet.

We are the creators of a new fintech era!

Our mission is to revolutionize the world by making blockchain technology accessible to everyone in everyday life. WhiteBIT is a global team of more than 1,500 professionals united by a shared vision of shaping the future.

We are building our own blockchain ecosystem to ensure maximum transparency and security for over 8 million users worldwide. Our cutting-edge solutions, rapid adaptation to market challenges, and technological excellence set us apart from traditional companies.

Our official partners include Juventus, FC Barcelona, Lifecell, FACEIT, and VISA.

Join us as an Quantitative Researcher. 

Requirements:

• 4–6+ years of experience in Information Security, GRC, Risk Management, Compliance, IT Audit, or a related field.
• Strong practical knowledge of information security and compliance frameworks such as ISO 27001, SOC 2, PCI DSS, CCSS or similar.
• Experience working with applicable regulatory requirements such as NIS2, DORA, GDPR, or other relevant regulations.
• Hands-on experience conducting information security risk assessments, control assessments, gap analyses, and compliance reviews.
• Experience supporting or coordinating internal and external audits, certifications, and regulatory assessments.
• Ability to independently manage compliance initiatives, track remediation activities, and follow up with control owners.
• Experience developing, reviewing, and maintaining security policies, standards, procedures, controls, and related documentation.
• Understanding of common information security domains, including access management, vulnerability management, incident management, third-party risk, business continuity, cloud security, and data protection.
• Experience working with third-party/vendor risk assessments and security due diligence.
• Experience responding to customer security questionnaires, RFIs/RFPs, or customer compliance requests.
• Ability to translate regulatory, contractual, and security requirements into clear and actionable controls for technical and business teams.
• Strong stakeholder management skills and experience collaborating with Security, IT, Engineering, Legal, Privacy, Procurement, and business teams.
• Strong analytical skills and ability to identify, assess, document, and communicate security and compliance risks.
• Excellent written and verbal communication skills, including the ability to explain GRC topics to both technical and non-technical stakeholders.
• Strong organizational skills and ability to manage several compliance, risk, and audit activities in parallel.
• Ability to work independently, prioritize effectively, and take ownership of GRC activities from identification through remediation and closure.
• Professional working proficiency in English.

Nice to have:

• Experience in SaaS, cloud-based, technology, or other highly regulated environments.
• Experience with GRC platforms or compliance automation tools such as ServiceNow GRC, OneTrust, Vanta, Drata, AuditBoard, or similar.
• Familiarity with cloud platforms such as AWS, Azure, or GCP from a governance and compliance perspective.
• Relevant professional certifications such as CISA, CISM, CRISC, CISSP, ISO 27001 Lead Implementer, or ISO 27001 Lead Auditor.
• Experience participating in or leading compliance improvement and control maturity initiatives.

Responsibilities:

• Own and coordinate day-to-day GRC activities across information security, risk management, compliance, and assurance.
• Conduct information security risk assessments, identify control gaps, document risks, and track remediation actions with relevant owners.
• Support the implementation, maintenance, and continuous improvement of security and compliance frameworks such as ISO 27001, SOC 2, PCI DSS, and other applicable standards.
• Monitor relevant regulatory and contractual requirements and help translate them into practical security controls and compliance activities.
• Coordinate and support internal and external audits, certification activities, customer assessments, and regulatory reviews.
• Maintain and improve security policies, standards, procedures, control documentation, risk registers, and other GRC documentation.
• Perform control assessments and periodically evaluate the effectiveness of implemented security controls.
• Track audit findings, compliance gaps, risks, and remediation plans through to closure.
• Support third-party and vendor security risk assessments, including due diligence and ongoing risk reviews.
• Manage and respond to customer security questionnaires, security reviews, and compliance-related requests in collaboration with relevant teams.
• Partner with Security, IT, Engineering, Legal, Privacy, Procurement, and business stakeholders to ensure security and compliance requirements are understood and implemented.
• Provide guidance to control owners on compliance requirements, risk treatment, evidence collection, and remediation activities.
• Identify opportunities to improve and automate GRC processes, evidence collection, reporting, and compliance monitoring.
• Develop and maintain GRC metrics, dashboards, and reporting to provide visibility into risks, compliance status, audit findings, and remediation progress.
• Support security awareness and compliance initiatives where relevant.
• Stay informed about changes in security standards, regulations, and industry practices and assess their potential impact on the organization.

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!

We're looking for an experienced C++ System Engineer to build, customize and maintain our own Chromium-based browser fork. The role involves working with Chromium source code, deep modification for specific business needs, performance optimization and setting up the infrastructure for regular upstream updates.

 Responsibilities 

- Build clean Chromium from scratch for Windows, macOS and Linux.

 - Modify Chromium source: strip Google telemetry, customize the network stack, control fingerprint generation algorithms. 

- Set up and optimize CI/CD pipelines for automated browser builds and testing. 

- Regularly port security patches and new releases from the main Chromium branch (upstream updates). 

- Profile, find and fix memory leaks, optimize performance.

 Requirements 

- 3+ years of commercial C++ development (C++17/20).

 - Hands-on experience with Chromium, CEF or WebKit architecture and source code. 

- Deep understanding of multi-process browser architecture: IPC, sandbox. 

- Confident with depot_tools, GN, Ninja. 

- Experience with large monorepos in Git, complex merge/rebase conflicts.

 - Understanding of network protocols: HTTP/S, WebSockets, WebRTC, SSL/TLS, proxy handling. 

Nice to have 

- Background in CyberSecurity, AdTech or anti-detect browsers.

 - Own powerful workstation for local builds, or experience with cloud build servers (AWS/GCP). 

- Experience optimizing V8 or Blink. 

We offer 

- Technically challenging R&D project, no routine. 

- Flexible schedule, minimal bureaucracy. 

- On-time payment and long-term cooperation, including fork maintenance after release.

Kraków, Poland. Hybrid — 2 days per week from the office.
Own Caliente's data lake — the system of record for millions of financial events a day (bets, wallet movements, live odds) across 12M+ active users. You decide how that data lands, is stored, retained, and governed on S3 + Snowflake/Databricks, so analytics, finance, and regulators all see accurate, reconciled data with zero drift from source.

Kraków, Poland. Hybrid — 2 days per week from the office. 

What you'll be doing

• Own the lakehouse architecture: bronze/silver/gold layers, Iceberg/Delta tables, schema evolution.
• Land operational data via CDC streaming (Kafka, Debezium), handling late and duplicate events.
• Design data layout for speed and cost: partitioning, compaction, file sizing, query performance on Trino/Athena/Snowflake.
• Own retention and archival: storage tiering, regulatory retention, immutability, GDPR deletion.
• Guarantee correctness: freshness SLAs, drift detection, reconciliation against the source wallet and ledger systems.
• Own governance: catalog and lineage, row/column access control, PII masking, encryption, audit trails.
• Monitor ingestion health, data anomalies, and cloud storage/compute spend.

Must-have

• Lakehouse architecture — bronze/silver/gold layering, an open table format (Iceberg, Delta, or Hudi), schema evolution.
• Data layout & query optimization at TB+ scale — partitioning, compaction, file sizing, query performance on Trino/Athena/Snowflake.
• Cloud lakehouse/DWH in production — Snowflake, Databricks, or BigQuery.
• CDC & streaming ingestion — Kafka + Debezium or equivalent; late, duplicate and out-of-order events.
• Strong SQL and data modeling — enough relational grounding to reason about the OLTP systems you capture from. Critical for financial ledgers.
• Correctness — freshness SLAs, drift detection, reconciliation against source wallet/ledger systems.
• Governance — catalogs, lineage, row/column access control, PII masking, retention, GDPR deletion.
• Cloud object storage — S3 or GCS, plus storage tiering and archival.
• Python and an orchestrator — Airflow or Dagster, as tools.

Nice to have

• Fintech, iGaming, or another regulated, audit-heavy environment.
• Cost monitoring / FinOps for storage and compute spend.
• Hudi specifically; Dagster specifically.
• Immutability / WORM regulatory retention.

Hi!
We are Boosta, a holding tech company that creates, develops, and invests in digital businesses with global potential. Today, we collaborate with over 800 specialists from different parts of the world, and millions of users use our products and services.

We are looking for a Junior+ Financial Controller to join our team and support the revenue-related financial operations of our projects. This role is focused on accounts receivable management, financial reconciliations, payment control, and cooperation with partners and the Affiliate department. 

What you will do: 

• Manage accounts receivable: track accrued and actual revenue, monitor payment deadlines, and follow up on overdue payments.
• Work in accounting systems: record revenue and expenses, prepare invoices, record payments, and ensure the accuracy of transactions.
• Communicate with partners on financial matters: send payment inquiries, clarify reasons for delays, and resolve discrepancies.
• Cooperate with the Affiliate department: prepare invoices for placements and advise the team on settlement-related matters.

• Perform reconciliations and prepare reports: conduct settlement reconciliations with partners, prepare fund withdrawal requests, and monitor revenue-related KPIs.

   

What we expect from you: 

• At least 1 year of experience as a Financial Controller. 
• Higher education in Accounting and Auditing, Finance, Economics, or related fields.
• Confident proficiency in Excel and Google Sheets: working with formulas, analyzing and checking data, preparing and reconciling financial spreadsheets.

• Basic understanding of accounting principles and financial reporting.

   

Will be a plus:

• Practical experience with accounts receivable and understanding of affiliate marketing principles.
• Experience working with accounting software or ERP systems (1C, BAS, QuickBooks, Xero, SAP, Oracle, etc.).

• Experience preparing financial reports, performing reconciliations, and controlling payments.

   

Your journey with us: 

• Step 1: Pre-screen.
• Step 2: Test task.
• Step 3: Technical interview. 
• Step 4: Reference check.

• Step 5: Job Offer!

   

What we offer: 

• 28 business days of paid off. 
• Flexible hours and the possibility to work remotely. 
• Medical insurance and mental health care. 
• Compensation for courses, trainings.
• English classes and speaking clubs. 
• Internal library, educational events. 
• Outstanding corporate parties, teambuildings.