Jobs at Djinni

Fozzy Group is one of the largest trade industrial groups in Ukraine and one of the leading Ukrainian retailers, with over 700 outlets all around the country. It is also engaged in e-commerce, food processing & production, agricultural business, parcel delivery, logistics, and banking.   
 

At Fozzy Group, we are developing a next-generation Decision Support System that connects operational, commercial, and investment data to optimize financial effectiveness and drive guest experience. As a Data Scientist you will own the measurement layer to derive Initiative & Investment Performance Insights. The role 

is organized around three streams: 

• Effect Measurement & Causal Inference: quantify the true incremental impact of initiatives using A/B testing and quasi-experimental methods. Measure uplift in purchase frequency, guest spend, average check, and retention against properly designed control groups, and form clear conclusions on whether an initiative works and is worth its cost. 

• Driver & Heterogeneity Analysis: identify the most significant factors of project performance using ML: guest profile structure and dynamics, technology presence, assortment, distance to competitors – so the business can assess project potential per store, forecast effects, and scale more effectively. 

• Self-Service Validation & Monitoring: build reusable, automated frameworks for effect validation and monitoring that let Finance and business owners get verified answers on demand, with full source transparency and reproducibility.
You will join a cross-functional team to design and implement data-driven decision module that directly influence financial outcomes. 

Job Responsibilities 

• Design and run experiments (A/B tests) and quasi-experiments (difference-in-differences, synthetic control, propensity score matching), and apply causal ML to estimate the incremental and heterogeneous effects of operational, commercial, and investment initiatives. 

• Build uplift / heterogeneous-treatment-effect models to learn which guests, segments, and stores respond most, and quantify effects on key metrics – purchase frequency, share-of-wallet / guest spend, average check, CLV, and retention (via survival models) – for pilot versus control groups. 

• Develop interpretable driver models (gradient boosting with SHAP, causal forests) that explain project performance, and rank the factors with the highest impact on results. 

• Build store-level potential-scoring and effect-forecasting models – probabilistic and hierarchical forecasting, transfer learning and store embeddings to borrow signal across the network – to guide and prioritize scaling decisions. 

• Design adaptive early-stop logic using Bayesian sequential testing, multi-armed bandits, and change point detection, to reallocate or halt rollouts as soon as the economic signal turns marginal. 

• Translate financial and commercial questions into statistically rigorous measurement designs, and connect statistical results to economic value (incrementality, ROI, payback). 

• Build SQL and Python pipelines, reusable feature sets / a feature store, and a self-service experimentation framework. 

• Productionize and monitor models (MLOps) – drift detection, automated validation, reproducibility, and source transparency. 

• Partner with Finance, Investment, Commercial, and Operations teams to deliver verified, decision ready insights. 
 

Requirements 

• Bachelor’s Degree in Mathematics / Quantitative Economics / Econometrics / Statistics / Computer Sciences / Finance; 

• At least 2 years working experience on Data Science; 

• Strong foundation in Statistics, Causal Inference, and Experimental Design – A/B testing, Hypothesis Testing, Power Analysis; 

• Proven experience with SQL (Window functions, CTEs, joins) and Python; 

• Expertise in Machine Learning, Time Series Analysis; 

• Ability to work independently and decompose complex problems. 
 

Preferred 

• Experience with Airflow, Docker, or Kubernetes for Data Orchestration; 

• Practical experience with Amazon SageMaker: training, deploying, and monitoring ML models in a production environment; 

• Knowledge of Reporting and Business Intelligence Software (Power BI, Tableau, Looker); 

• Ability to design and deliver packaged analytical/ML solutions. 
 

What We Offer 

• Competitive salary; 

• Professional & personal development opportunities; 

• Being part of dynamic team of young & ambitious professionals; 

• Corporate discounts for sport clubs and language courses; 

• Medical insurance package.

Fozzy Group is one of the largest trade industrial groups in Ukraine and one of the leading Ukrainian retailers, with over 700 outlets all around the country. It is also engaged in e-commerce, food processing & production, agricultural business, parcel delivery, logistics and banking.
 

The Foodtech team is looking for a Data Scientist to develop the Operational Analytics function for a fast growing food delivery business. In this role, you will focus on time series forecasting, regression modeling, simulation modeling, and end-to-end machine learning pipelines to support resource planning and operational decision-making.

You will be responsible for developing simulation-based models that serve as a foundation for a digital twin of operational processes, enabling scenario analysis, stress testing, and what-if simulations for capacity planning and operational optimization.

You will work closely with product, engineering, and operations teams to transform data into measurable business impact through production-ready ML and simulation solutions.
 

Job Responsibilities:

• Develop and implement time series forecasting models for resource planning (demand, capacity, couriers, delivery slots, operational load);
• Build regression and machine learning models to explain key drivers and support operational decisions;
• Apply a wide range of time series approaches from classical models (SARIMA, ETS, Prophet) and ML models (GB) to modern Deep Learning models (LSTM, Temporal CNNs, Transformers for TS);
• Design, build, and maintain end-to-end automated ML pipelines, deploy and operate models in production using AWS SageMaker;
• Orchestrate training and inference workflows with Apache Airflow;
• Analyze large-scale operational datasets and convert results into insights, forecasts, and actionable recommendations;
• Collaborate with product managers, engineers, and operations teams to define business problems and validate analytical solutions;
• Monitor model performance, forecast stability, and business impact over time.
   

Requirements:

• Bachelor’s Degree in Mathematics / Engineering / Computer Sciences / Quantitative Economics / Econometrics;
• Strong mathematical background in Linear algebra, Probability, Statistics & Optimization Techniques;
• At least 2 years working experience on Data Science;
• Experience of the full cycle of model implementation (data collection, model training and evaluation, model deployment and monitoring);
• Ability to work independently, proactively, and to decompose complex problems into actionable tasks.
   

Skills:

• Strong proficiency in Python with solid application of object-oriented programming (OOP) principles (modular design, reusable components, maintainable code);
• Solid experience in time series forecasting and regression modeling;
• Practical knowledge of:o Classical and ML forecasting techniques;
  o Statistical methods (hypothesis testing, confidence intervals, A/B testing);
• Advanced SQL skills (window functions, complex queries);
• Experience building automated ML pipelines;
• Understanding of MLOps principles (model versioning, monitoring, CI/CD for ML).
   

Nice to have:

• Hands-on experience with AWS SageMaker (training jobs, endpoints, model registry);
• Experience with Apache Airflow for data and ML workflow orchestration;
• Knowledge of Reporting and Business Intelligence Software (Power BI, Tableau);
• Experience working with large-scale production data systems.
   

What We Offer:

• Competitive salary;
• Professional & personal development opportunities;
• Being part of dynamic team of young & ambitious professionals;
• Corporate discounts for sport clubs and language courses;
• Medical insurance package.

We are looking for a Middle .NET Developer to join our team and work on an exciting FinTech project. You'll collaborate with experienced engineers to build scalable, secure, and high-performance backend solutions.

Responsibilities:

• Develop and maintain backend services using C# and .NET.
• Design and implement RESTful APIs.
• Participate in architecture discussions and code reviews.
• Collaborate with cross-functional teams to deliver high-quality software.
• Write clean, maintainable, and well-tested code.
   

Requirements:

• 3+ years of commercial experience with C#/.NET.
• Strong knowledge of .NET Core / .NET 6+ and ASP.NET Core.
• Experience with REST APIs.
• Solid understanding of SQL databases (MS SQL Server or PostgreSQL).
• Experience with Entity Framework Core.
• Knowledge of OOP, SOLID principles, and design patterns.

Nice to Have:

• Docker and Kubernetes.
• Azure or AWS.
• Experience with microservices.
• Previous experience in the FinTech domain.

We Offer:

• Remote work and flexible working hours.
• Legal support.
• Paid sick leaves.
• Paid vacations.
• Medical insurance. 
• Free English classes.

Ready to level up your career? 

Playtech's GPAS unit is looking for an experienced Scala Developer with excellent engineering skills.

Your influential mission. You will...  

• Participate in software design, development, refactoring, support, and code reviews to maintain high development standards.
• Collaborate with platform teams to deliver great results.
• Work autonomously on your tasks with little or no supervision.
• Optimize the platform to achieve maximum throughput and scalability.
• Be proactive and go beyond expectations.

Components for success. You...

• Bring at least 3 years of hands-on experience developing server-side applications in Scala.
• Have a strong working knowledge of Scala (preferably Scala 3) and SBT (Scala Build Tool).
• Demonstrate solid experience with Pekko/Akka, including HTTP, Actors, Cluster, Persistence, Streams, and connectors.
• Possess a strong understanding of the JVM, data structures, and algorithms.
• Exhibit excellent knowledge of parallel and concurrent programming principles.
• Have practical experience building high-scale, distributed systems with complex interfaces and integrations.
• Think like an engineer - taking ownership, driving solutions forward, and continuously improving systems and processes.
• Demonstrate exceptional problem-solving skills and critical thinking.
• Show a willingness to document solutions and actively share knowledge with colleagues.

• Communicate clearly and effectively in English.

   

You'll get extra points for...

• Previous experience in the iGaming domain.
• Experience working with Typesafe Config.
• Hands-on experience with Couchbase or other document-based NoSQL databases.
• Familiarity with AWS services such as S3 and DynamoDB.
• Experience using Play JSON.
• Proficiency with ScalaTest for testing.
• Experience with containerization and orchestration tools such as Docker, Nomad, or Kubernetes.
• Confidence working in Linux environments.

Thrive in a culture that values...   

• A friendly, cooperative, and goal-oriented team of experienced professionals.
• Clear goals and a results-driven environment.
• Open communication, knowledge sharing, and mutual support across teams.
• Initiative-taking and a confident approach at the workplace.
• Collaborative and supportive culture as well as stable long-term career opportunities.
• Global scope and inclusive working environment where you can engage with diverse teams and perspectives.
• Constant learning and development opportunities and professional growth programs.

• An active lifestyle and mental well-being supported through sports classes, master classes, and monthly well-being activities.

   

GPAS UNIT

We invite an experienced Scala Developer to become a part of Playtech as a new member of the GPAS product team. Gaming Platform as a Service aka GPAS is Playtech’s exclusive distributed games delivery platform that currently has more than 1000 games running on it. GPAS is a highly accessible, multi-tenant, scalable, distributed and event-driven system written in Scala with the help of the Akka framework. We use Couchbase as a hot storage and AWS S3/DynamoDB as our cold storage to ensure we can handle nearly a billion transactions per day. We have a complex solution that provides capabilities to run various types of online casino games. We adopt Scrum methodology to deliver new features on time.

Playtech is an equal opportunities employer. Our mission is to welcome everyone and create inclusive teams. We celebrate differences and encourage everyone to join us and be themselves at work.

About the Position

We’re growing fast and looking for a Senior Backend Engineer to join our Engineering team and help build the infrastructure that powers our platform at scale.

This is a high-impact role where you’ll work alongside top-tier engineers, designing and building secure, high-performance systems in a fast-paced environment. If you enjoy solving complex technical challenges and want your work to have real impact — we’d love to meet you.

What We’re Looking For

• Bachelor’s degree in Computer Science or a related field
• 5+ years of experience in backend development
• Strong experience building scalable, production-grade systems
• Proficiency in Node.js
• Experience with SQL and NoSQL databases
• Familiarity with cloud platforms and microservices architecture
• Strong problem-solving skills and attention to detail
• Passion for writing clean, maintainable, and efficient code

Bonus Points For

• Experience in cybersecurity or building security-focused products
• Experience working in startup or high-growth environments
• Familiarity with DevSecOps / SDLC tools
• Experience with distributed systems and high-scale data processing

Привіт!
Я Макс, засновник EdTech-компаній з 10+ роками досвіду у створенні та масштабуванні стартапів. Останні роки я сфокусований на B2C digital products для міжнародних ринків. Один із наших продуктів уже має 50K+ користувачів та за 6 місяців вийшов на рівень $100K+ monthly revenue, де ключовим каналом росту зараз є paid acquisition через web-to-web funnels.

Зараз ми хочемо прискорити продуктові експерименти та системно покращувати весь шлях користувача від рекламного кліку до покупки: landing page, quiz, paywall, checkout, upsells, conversion rate, CAC, ROAS та LTV.

Тому шукаємо Middle/Senior Web-to-Web Product Manager, який має практичний досвід роботи з B2C subscription funnels і може самостійно вести окремий напрям експериментів -- від аналізу funnel та формування гіпотези до запуску A/B-тесту й оцінки business impact.

Про роль
- Формат: Part-Time Contractor, 15–20 годин на тиждень
- Продукти: B2C Subscription Products / EdTech
- Ринки: U.S. + mixed international markets
- Фокус: Web-to-Web Funnels / Conversion / Monetization / Experimentation
 

Що ти робитимеш
Product strategy & experimentation
- Визначати strategic top 7 web-to-web bets і формувати experiment roadmap
- Самостійно проводити повний цикл експерименту: проблема → гіпотеза → дизайн рішення → A/B test → аналіз → висновки
- Вести окремий продуктовий напрям: advertisement → landing page / quiz → paywall → checkout → purchase
- Аналізувати funnel metrics та знаходити ключові conversion opportunities
- Формувати й пріоритезувати гіпотези навколо CTR, quiz start, quiz completion, paywall CVR, checkout CVR, purchase rate, AOV, CAC, ROAS та LTV
 

Conversion & monetization
- Покращувати landing pages, quiz funnels, paywalls та checkout experience
- Зменшувати drop-off між ключовими етапами funnel
- Тестувати positioning, value propositions, offer structure, pricing, subscription plans, trials, discounts та guarantees
- Адаптувати funnel під різні acquisition sources, creatives, audiences, geo та user intents
- Покращувати payment acceptance, failed payment recovery, rebills та refund rate
 

Analytics, research & delivery
- Працювати з PostHog, GA4, Stripe та продуктовими даними
- Будувати funnel і cohort analysis, сегментувати результати за source / campaign / creative / geo / device / offer
- Формувати коректний дизайн A/B-тестів, success metrics, guardrail metrics і критерії прийняття рішень
- Проводити competitor research та аналізувати сильні web funnels у B2C subscription products
- Створювати базові прототипи landing pages, quiz steps, paywalls та checkout screens у Figma
- Використовувати AI для research, аналізу funnel, підготовки гіпотез, copy variations, прототипів і документації
 

Кого ми шукаємо
- 2–3+ роки практичного досвіду на позиції Product Manager / Growth Product Manager / Funnel Product Manager
- Досвід із B2C subscription products, web-to-web funnels, EdTech, content products або consumer SaaS
- Практичний досвід оптимізації quiz funnels, landing pages, paywalls і checkout
- Практичний досвід запуску A/B-тестів та оцінки їхньої статистичної валідності
- Розуміння funnel metrics: CTR, quiz start rate, quiz completion rate, paywall CVR, checkout CVR, purchase rate, AOV, CAC, ROAS, rebill rate та LTV
- Вміння самостійно знаходити drop-offs, формувати гіпотези та доводити їх до запуску
- Розуміння direct-response principles: positioning, offer, value proposition, social proof, urgency, guarantees та objection handling
- Практичні навички роботи з product analytics: PostHog, GA4, Amplitude, Mixpanel або аналогами
- Розуміння attribution, unit economics та зв’язку funnel metrics із revenue
- Базова design literacy: здатність самостійно накидати варіант тесту у Figma на основі готових компонентів
- AI-powered product skills: research, competitor analysis, hypotheses, copy variations, data analysis та documentation
- Бонус: досвід із mobile app funnels, RevenueCat, App Store / Google Play subscriptions, in-app paywalls, trials, rebills, cancellations, refunds або win-back механіками.

Що з нашого боку
- Гнучкий part-time / project-based формат (15-20 годин на тиждень) -- можна поєднувати з full-time роботою або іншими проєктами
- Оплата за результат + бонусна система: якщо твої дії дають помітний growth impact, ми готові щедро ділитися upside
- Сильний кейс у портфоліо: можливість долучитися до масштабування продукту від сотень тисяч до мільйонів доларів revenue (продукт уже має traction: 50K+ users, $100K+ monthly revenue)
- Перспектива розширити формат до Head of Product у напрямі Mobile / Web-to-Web та отримати опціони компанії
- Можливість безпосередньо впливати на activation, retention, subscription revenue та LTV
- Повна свобода в організації часу: нам не важливо, коли ти працюєш -- важливо, який результат даєш
- Пряма робота з co-founder, який відповідає за product і development: швидкі рішення, мінімум бюрократії, максимум фокусу на growth
- Робота над корисними продуктами в Education / Health & Fitness / Parenting, які реально дають value користувачам

Cosmolot is a Ukrainian product IT company that creates and develops an online digital entertainment platform. We build technology-driven solutions with a strong focus on security, transparency, and user comfort.

As a System Engineer, you will secure and optimize our IT environment by managing Google Workspace, endpoint protection (EDR/MDM), and access controls. You will resolve complex L2/L3 requests, remediate vulnerabilities, and drive IT security projects to keep our operations safe and seamless.

Responsibilities:

• Configure google workspace (chrome policies, context awareness dlp/mail policies etc.)
• Work closely with endpoint security and EDR solution
• Assist in uem/mdm systems and patch management
• Assist in managing system permissions and user accounts
• Collaborate with cross-functional terms to remediate identified vulnerabilities.
• Participating in IT/Information Security projects aimed at improving user experience and implementing new technologies
• Solve dedicated l2/l3 user request

Requirements and Skills:

• Experience with of Malware protection software (AV, EDR, XDR)
• Experience with Data Leakage Prevention infrastructure (DLP cloud and on-premise), Access Management, MDM, etc
• Experience with the cloud infrastructures and cloud technologies
• Working knowledge of MacOS/Windows, good understanding of endpoint security
• Working experience with network and web-application scanners
• Knowledge and experience in designing and applying security controls for different technologies
• Average knowledge in IP networking
• Experience at logs analysis and troubleshooting
• Good communication and excellent reporting skills
• Ability to dive into details and study new knowledge
• 3+ years experience as tech administrator or/and cybersecurity specialist
   

Would be a plus:

• System administrator (Windows, MacOS) background
• Experience with log collection, parsing and enrichment with Elastic, logstash, opensearch
• Experience with Google workspace and Atlassian (Jira, Confluence) products
• Experience with SSO protocols and service-to-directory integrations
• Experience with AWS security stack; DevSecOps functions
• Information security certifications
• Intermediate+ English

What We Offer:

• Work in a strong team of professionals and genuinely supportive people
• Opportunities for professional growth and development
• Flexible working hours
• Medical insurance
• Sports expense compensation
• Psychological support
• Free language classes (English, Spanish, and German)
• 18 working days of paid vacation, paid sick leave, and sick days
• Regular team buildings and corporate events
• All necessary equipment for comfortable work

NuxGame is a dynamic IT company delivering top-tier software solutions for the iGaming industry. We empower operators of all sizes to expand into new markets, strengthen their existing brands, and achieve ambitious business goals.
We are looking for a Devops Team Lead to join our team. If you are passionate about high-load systems, solving complex engineering challenges, and working with modern tech stacks, this is the place for you.

Required skills:

• 3+ years in a DevOps leadership role (team management, hiring/firing, mentoring, reporting, workflow optimization).
• Strong expertise in AWS (multi-account organizations, networking, security, cost optimization).
• Advanced Kubernetes experience (EKS preferred): HA networking, autoscaling, PodDisruptionBudgets, NodeGroups, service mesh & CNI (e.g., AWS VPC-CNI, Cilium/eBPF).
• Infrastructure as Code: Terraform (multi-environment modules, GitOps automation), Helm; understanding of CloudFormation as a plus.
• Cloud-native CI/CD: GitHub Actions, Jenkins, FluxCD or ArgoCD (GitOps), can design secure deployment pipelines for PHP, Go.
• Observability & Monitoring: Prometheus, Grafana, Alertmanager, New Relic, Sentry; experience writing custom metrics/alerts.
• RDBMS expertise: Practical experience with MySQL/Aurora performance, backup/restore automation, failover.
• Security: Strong understanding of Zero-Trust, IAM, network segmentation, SSL/TLS, WAF, DDoS protection, secrets management (AWS Secrets Manager/External Secrets Operator).
• Networking fundamentals: VPC design, Ingress/Load Balancers, troubleshooting.
• Automation & Scripting: Python/Bash for operational automation, integrations, and tooling.
• High-load experience: Scaling distributed systems used globally (latency optimization for multi-region deployments).
  
   

Would be a plus:

• Experience with Multi-Region and Multi-Cloud architectures, cross-cluster networking, failover strategies.
• Experience with PCI DSS, or equivalent compliance frameworks.
• Caching/CDN and storage optimization: Redis, Cloudflare, S3 tiering.
• Linux systems internals, performance tuning.
• Experience with Kafka/MSK or other streaming systems.
• Strong background in cost optimization techniques across AWS/GCP/Azure.

Responsibilities 

• Lead and grow the DevOps team, set priorities, improve delivery workflows, and ensure high service availability.
• Lead the development and support of Kubernetes-based infrastructure across multiple AWS accounts.
• Maintain Infrastructure as Code (Terraform) and GitOps deployment practices.
• Support continuous delivery and operational excellence through optimized CI/CD pipelines and automation.
• Ensure strong monitoring, incident response, and system performance across all environments.
• Collaborate with engineering and product teams to drive infrastructure improvements aligned with business needs.
• Strengthen security controls, access management, and compliance across the platform.
• Manage Cloudflare security and performance services.

What we offer:

We believe that a happy team builds the best products. Here is how we support you:
 

• Remote & Flexible: Work from anywhere. Our core hours are 09:00/10:00 to 17:00/18:00 (Kyiv time), Mon-Fri.
• Financial Stability: Timely payment for compensation for services
• Personal Equipment Policy: No tech troubles — a MacBook and all necessary equipment are provided for use to ensure comfortable and efficient work.
• Learning & Development: It is a pleasure for us to watch you grow. We cover your learning costs (courses, conferences).
• Knowledge Sharing: We regularly gather to discuss new trends, share insights, and elevate one another.
• Community: At NuxGame, you will work in a team of like-minded people who are ready to support, inspire, and tackle complex challenges together.
• Creative Freedom: We encourage initiative. With us, you have the freedom of professional expression and the space to implement your ideas.
• Time-off Policy: 24 vacation days per year + 5 sick days (without medical confirmation).
• Atmosphere: A friendly environment focused on results and mutual respect, free from unnecessary bureaucracy and pressure. 

Job Title: Senior Java Team Lead (Payments)
Company: VCG Tech Limited
Location: Remote (Global)
Employment Type: Full-Time

Role Purpose

You will lead the team that builds and runs our payments platform, the systems that move client money in and out of an online trading business. This covers deposit and withdrawal orchestration, integration with multiple third-party payment service providers, payout flows, and reconciliation. This is money-movement software, so correctness, idempotency, traceability and reliability are the standard, not aspirations. You own the architecture, the technical direction and the delivery accountability for a domain where a single mishandled transaction is a real problem for a real client.

This is a hands-on, coding team lead role. You will spend meaningful time in a Java and Spring Boot microservices codebase, with enough React and TypeScript to lead a fullstack team across the payment journeys clients and operations staff actually use. Day to day you balance writing and reviewing code, shaping the architecture, and growing the engineers around you, working closely with product, operations and other engineering teams to ship reliable payment flows. The team works remotely and you report to the CTO.

Key Responsibilities

Architecture and money-movement correctness

• Own the architecture of deposit, withdrawal, payout and reconciliation services across a Java microservices backend
• Design transaction flows that are idempotent, auditable and safe under retries, timeouts and partial failures
• Define how state transitions, ledgering and reconciliation guarantee that money is never lost, duplicated or stranded
• Set the standards for data consistency, event-driven messaging and failure handling across the team
• Drive technical decisions on resilience, observability and recovery for critical payment paths

Hands-on delivery

• Write, review and merge production code in Java and Spring Boot, leading by example on quality
• Build and maintain REST APIs and event-driven integrations between payment services
• Contribute to the React and TypeScript front end for client and operations payment journeys
• Keep CI/CD, automated testing and deployment pipelines healthy and fast
• Tackle the hardest or highest-risk parts of the work yourself when it matters most

Provider integration and reliability

• Lead integration with multiple third-party payment service providers behind a clean internal abstraction
• Design provider routing, fallback and retry behaviour that stays correct when a provider degrades or fails
• Build reconciliation between internal records and provider settlements to detect and resolve discrepancies
• Own monitoring, alerting and on-call readiness for payment flows using observability tooling
• Lead incident response for payment issues and turn root causes into lasting fixes

Team leadership and delivery

• Lead, mentor and grow a team of backend and fullstack engineers
• Own planning, prioritisation and delivery commitments for the payments roadmap
• Run pragmatic code review, design review and engineering practices that keep quality high
• Partner with product, operations and other teams to translate needs into reliable delivery
• Be accountable for the team's output, timelines and the operational health of what you ship

Required Experience & Skills

• Proven team-management experience is essential - you have directly led a team of engineers as their team lead, owning day-to-day coordination, planning, 1:1s, mentoring, performance and growth, and the team's delivery, while remaining hands-on with code
• 8+ years building backend systems in Java, with deep Spring Boot and microservices experience
• Strong track record building systems where correctness and reliability are critical, ideally involving money movement, transactions or other high-integrity data
• Practical mastery of idempotency, retries, distributed transactions and failure handling in distributed systems
• Strong SQL and relational database skills, including data modelling for transactional and reconciliation workloads
• Hands-on experience with event-driven architectures and message queues
• Experience designing and operating REST APIs and integrating with third-party providers at scale
• Working proficiency in React and TypeScript, enough to lead a fullstack team and contribute to the front end
• Solid experience running services on AWS with Docker, CI/CD and Git-based workflows
• Clear communicator who can drive technical decisions and align engineering with product and operations

Nice to Have

• Experience in payments, payment orchestration or integrating multiple payment service providers
• Background in reconciliation, ledgering or settlement systems
• Experience in fintech, brokerage or online trading domains
• Familiarity with KYC/AML and fraud-prevention concepts at a generic level
• Kubernetes experience for deploying and operating microservices
• Infrastructure-as-code experience, for example Terraform
• Hands-on experience with observability tooling such as Grafana, Prometheus or CloudWatch
• Comfortable working in a remote, product-team-oriented engineering organisation

We are looking for a Financial and Compliance Controller. This role offers the scale and complexity of managing financial operations across multiple entities and jurisdictions, ensuring high-quality reporting and compliance with IFRS/US GAAP. You will build and optimize internal controls, financial processes, and reporting frameworks, while overseeing group-level closing, cash flow, and audit readiness. Working cross-functionally with Accounting, Legal, Tax, and Product teams, you’ll drive financial transparency, support budgeting and performance analysis, and contribute to strategic decision-making, directly impacting the company’s efficiency, risk management, and long-term growth.

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide

In this role, you will

• Consolidate and ensure the quality of financial and management reporting (multi-entity, multi-country), including compliance with IFRS/US GAAP
• Design and develop internal control frameworks, manage financial risks, and ensure the reliability of financial processes
• Implement and standardize financial policies, procedures, and reporting methodologies
• Own period-end closing processes and oversee accounting accuracy at the group level
• Coordinate external providers (accounting, audit, corporate services) and ensure audit readiness
• Manage compliance across multiple jurisdictions in close collaboration with Legal and Tax teams
• Develop and oversee the group’s corporate structure, including interaction with registrars and monitoring of substance requirements
• Participate in building and optimizing payment and banking infrastructure, including KYC/KYB processes
• Oversee and coordinate group-level cash flow, including intercompany settlements
• Participate in budgeting, performance analysis (actual vs budget, ROI), and support decision-making processes
• Prepare management reporting and dashboards for C-level stakeholders
• Drive process improvements and initiatives aimed at increasing efficiency and reducing risks
• Collaborate cross-functionally and participate in strategic projects
  
  It’s all about you
• Proven experience in consolidating and ensuring the quality of financial and management reporting (multi-entity, multi-country), including IFRS/US GAAP compliance
• Strong expertise in designing and developing internal control frameworks, financial risk management, and ensuring reliable financial processes
• Hands-on experience with implementation and standardization of financial policies, procedures, and reporting methodologies
• Ownership of period-end closing processes and oversight of accounting accuracy at the group level
• Experience in coordinating external providers (accounting, audit, corporate services) and ensuring audit readiness
• Solid understanding of compliance across multiple jurisdictions and effective collaboration with Legal and Tax teams
• Experience in developing and overseeing corporate structures, including interaction with registrars and monitoring of substance requirements
• Familiarity with payment and banking infrastructure, including KYC/KYB processes, with a track record of optimization
• Experience in overseeing and coordinating group-level cash flow, including intercompany settlements
• Background in budgeting, performance analysis (actual vs budget, ROI), and supporting decision-making processes
• Experience in preparing management reporting and dashboards for C-level stakeholders
• Track record of driving process improvements aimed at increasing efficiency and reducing risks
• Strong cross-functional collaboration skills and experience contributing to strategic initiatives
• English proficiency B2

Would be a plus

• Experience working with ERP systems (SAP, Microsoft Dynamics 365, or others)
• Professional certifications (ACCA, CIMA, CPA), or currently in progress

What we offer

Care and support: 

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity recovery support allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
   

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools
   

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
   

Hiring process

• Intro call
• Test Task
• Technical Interview
• Final Interview 
• Reference check/Polygraph
• Offer

About the company: United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide

About your role: We are looking for a Lead Treasury Manager to help scale and strengthen our treasury function. This role offers the opportunity to manage multi-currency cash flows across international banks, EMIs, and crypto partners, optimize treasury processes, and gradually build and lead the treasury team as the company grows. You'll play a key role in ensuring financial stability and supporting the company's strategic growth. 

You'll work cross-functionally with the Accounting, Financial Control, and Product teams, taking ownership of banking relationships, compliance processes, and continuously improving treasury operations as the business scales.

In this role, you will

• Lead and develop the company's treasury function, driving its continuous improvement, scaling processes, and implementing best practices to support business growth.
• Lead and develop the treasury team, distributing workload, setting priorities, and mentoring team members
• Own end-to-end relationships with banks and EMIs — negotiating fees, credit terms, and service conditions
• Analyze current banking costs and proactively identify optimization opportunities (e.g., switching accounts or providers to reduce fees)
• Lead the opening and closing of bank and EMI accounts, including onboarding for new jurisdictions and business needs
• Own KYC processes and ensure compliance with financial regulations and internal policies
• Identify financial and FX risks and develop strategies to mitigate them
• Manage foreign exchange exposure and support decisions on currency and banking setup for new business flows
• Ensure accurate preparation of supporting documentation for payments and oversee bank card management
• Be able to step in and execute payments personally when needed, ensuring business continuity during team absences or peak load
• Prepare and analyze reporting on turnover, balances, and financial performance for management
• Coordinate correspondence with banks on operational matters, including refunds, chargebacks, and account-related issues
• Continuously improve and automate treasury-related processes in collaboration with Financial Control and other internal teams
• Participate in the transition to a new ERP system, adapting treasury data structures and workflows accordingly
• Support ad hoc projects and reporting as assigned by senior management

It’s all about you

• 3+ years of experience specifically in a Treasury Manager role, preferably in IT, fintech, or a multi-jurisdictional business
• Experience managing a team, with the ability to delegate, prioritize, and develop team members
• Hands-on experience with international banks, EMIs, and payment systems (SWIFT, SEPA, ACH, online banking)
• Experience working with crypto payments/exchanges is a strong advantage
• Experience opening and closing bank/EMI accounts across multiple jurisdictions
• Solid understanding of KYC procedures and regulatory compliance requirements
• Strong analytical skills and confidence negotiating directly with banks on fees and terms
• Upper-Intermediate English proficiency, both oral and written
• Structured, proactive, and results-oriented approach to work

Would be a plus

• Experience with cash flow forecasting in a multi-entity/multi-currency structure
• Knowledge of ERP systems (especially Microsoft Dynamics 365)
• Prior exposure to fintech or high-growth tech environments

What we offer

Care and support: 

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity Recovery Support Allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
   

Hiring process

• HR interview
• Test Task
• Technical Interview
• Final Interview
• Reference check/Polygraph
• Offer

Project Description:

A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients, which is built on big data architecture, highly scalable, and cloud-ready. The platform enables industry-leading analytics, client reporting, regulatory compliance, surveillance, supervisory reporting, and data science solutions (data flame). The project tech stack: Java, Scala, Spring, SQL, Kafka, Hadoop.

We are looking for a strong Senior Java Developer capable of being able to work within the team, being a mentor for team members, communicating with stakeholders, and being accountable for the outcomes of activities that are assigned.

The role of the involves working with strong development teams (2 Senior Java Developers), the opportunity to work with big data, improving knowledge in this domain, and utilizing the resources of an international bank.

Responsibilities:

• Design and build frameworks for ingesting/modeling the complex Risk data
• Develop Low latency caching to service Front office risk systems
• Setup monitoring and management for services
• Provide SME support for development of automated QA scripts

Mandatory Skills Description:

• Strong knowledge of Big Data technologies: Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark. Green flags: Spark, Hive, Hadoop.
• At least 5 years of experience in software development, including professional backend software development experience;
• Strong Knowledge of Java programming languages
• Should be familiar with algorithms and design patterns
• Familiarity with Linux environment, including scripting skills
• Designing and building APIs (Java);
• Java Server-side or Back-end development;
• Core Java;
• Java collections and multithreading;
• Java Memory Management;
• Database and SQL (writing stored procedures, designing table schemas).
• Understanding of distributed systems.
• Understanding of CI/CD workflow.

• Ability to multi-task and work under pressure.
• Ability to pick up new concepts and apply the knowledge.
• Demonstrated problem-solving skills.
• Enthusiastic and proactive approach with a willingness to learn.
• The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

Nice-to-Have Skills Description:

• Experience In-memory databases and caching
• Job Orchestration tools like Autosys or Airflow
• Apache Spark
• Financial background (where possible)

We are looking for a skilled FP&A Analyst to join our customers' team.

Key responsibilities

• Ensure data accuracy through validation processes and financial controls
• Manage and analyze usage-based and revenue-sharing (revshare) models
• Review and approve commercial agreements from a financial perspective
• Perform financial forecasting, budgeting, and variance analysis
• Deliver ad hoc analysis to support key business decisions

• Partner with cross-functional stakeholders to align financial insights with company strategy

   

Requirements

• 5+ years of FP&A experience, preferably in a global SaaS company
• Advanced Excel skills, including Power Query (mandatory)
• Advanced SQL (mandatory)
• Strong analytical mindset with exceptional attention to detail
• Proven ability to communicate insights clearly and partner with stakeholders
• Excellent English (written and verbal)

Level: Senior Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours: EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

About the Client

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

About the Role

We are looking for a Senior SDET to lead the design of automated test frameworks and testing strategy for a large-scale distributed data platform. You will own the quality of the query engine, connectivity layer, and backend services end-to-end — from framework architecture through CI/CD infrastructure across all major clouds — and mentor middle engineers on the team.

This is a data-heavy, backend-focused role. We are not looking for web/UI QA engineers — the work centers on validating distributed query execution, data correctness at scale, connectivity drivers, and backend microservices.

Responsibilities

• Architect, design, and evolve automated test frameworks in Python / pytest for backend services, REST APIs, and distributed data components.
• Define testing strategy for new features and platform components — coverage, risk assessment, and quality gates.
• Own end-to-end, integration, performance, and regression testing covering SQL query execution, data correctness at scale, and platform APIs.
• Lead performance and load testing efforts with JMeter, including workloads over JDBC / ODBC / Arrow Flight drivers.
• Design and validate large-scale data testing scenarios — query plans, result correctness across heterogeneous data sources, metadata consistency, and behavior under high concurrency.
• Own CI/CD test pipelines in Jenkins — architect, maintain, and continuously improve.
• Provision and manage test environments in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker; drive automation and reproducibility.
• Investigate complex, cross-layer failures and drive root-cause analysis with engineering.
• Mentor middle SDETs, review test designs, and set quality standards across the team.
• Partner with US-based development leads on shift-left practices, testability, and release readiness.

Required Qualifications

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Python, including pytest, with deep understanding of OOP, software design principles, and test framework architecture.
• SQL & Data: Advanced SQL skills and strong understanding of relational and analytical data systems, including query execution internals.
• Data-intensive testing experience: Demonstrated experience testing data-intensive systems — query engines, ETL/ELT pipelines, streaming platforms, or analytical databases. Candidates with only web/UI QA backgrounds are not a fit.
• Testing experience: 5+ years in backend/system test automation, with demonstrated ownership of test strategy and infrastructure.
• CI/CD & DevOps: Solid experience architecting and maintaining Jenkins pipelines and test environments.
• Containers & Orchestration: Strong working knowledge of Docker and Kubernetes (running workloads, debugging pods, deploying complex environments).
• Cloud: Hands-on experience with at least one major cloud (GCP, AWS, or Azure); exposure to more than one is a strong plus.
• Version Control: Confident with Git / GitHub workflows and code review practices.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.
• Leadership: Prior experience mentoring engineers, defining test strategy, or leading a QA/SDET function.

Desired Skills

• Deep experience testing REST APIs and backend microservices at scale.
• Hands-on with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines (e.g., Presto, Trino, or similar).
• Strong understanding of modern data lakehouse concepts, open table formats (Apache Iceberg), and data warehousing.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Performance testing with JMeter or comparable load-testing tools at production scale.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Deep understanding of query plan generation, query acceleration / materializations, and metadata integrity in distributed data systems.
• Prior experience leading a QA/SDET function in a data-platform or database engineering environment.
  Please note: We can consider only candidates currently residing in the EU, EEA, or the UK.

Level: Middle Engagement: Long-term contract Location: Europe (EU / EEA / UK), remote Working hours: EU business hours, shifted 2–3 hours later to ensure daily overlap with US West Coast (PST/PDT) mornings

About the Client

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

About the Role

We are looking for a Middle-level SDET to design and maintain automated tests for a large-scale distributed data platform. You will validate the correctness, performance, and reliability of the query engine, connectivity layer, and backend services across all major clouds.

This is a data-heavy, backend-focused role. We are not looking for web/UI QA engineers — the work centers on validating distributed query execution, data correctness at scale, connectivity drivers, and backend microservices.

Responsibilities

• Develop and maintain automated tests in Python / pytest for backend services, REST APIs, and distributed data components.
• Write end-to-end, integration, and regression tests covering SQL query execution, data correctness, and platform APIs.
• Support performance and load testing with JMeter, including workloads over JDBC / ODBC / Arrow Flight drivers.
• Validate data-intensive scenarios — query plans, result correctness across data sources, metadata consistency, and behavior under concurrency.
• Contribute to CI/CD test pipelines in Jenkins — configure, maintain, and troubleshoot.
• Provision and manage test environments in Kubernetes (GKE / EKS / AKS) across GCP, AWS, and Azure using Docker.
• Investigate failures across the stack — query engine, distributed services, drivers, infrastructure — and drive them to resolution with engineering.
• Collaborate with US-based developers on testability and quality gates.

Required Qualifications

• Education: B.S. or M.S. in Computer Science, Computer Engineering, or a related technical field.
• Programming: Strong proficiency in Python, including pytest, with a solid grasp of OOP and software design principles.
• SQL & Data: Strong SQL skills and solid understanding of how relational and analytical data systems work.
• Data-intensive testing experience: Hands-on experience testing data-intensive systems — query engines, ETL/ELT pipelines, streaming platforms, or analytical databases. Candidates with only web/UI QA backgrounds are not a fit.
• Testing experience: 3+ years in backend/system test automation or SDET roles.
• CI/CD & DevOps basics: Practical experience with Jenkins pipelines and deploying/maintaining test environments.
• Containers: Working knowledge of Docker and basic Kubernetes (running workloads, debugging pods, kubectl fluency).
• Cloud: Comfortable operating in at least one major cloud (GCP, AWS, or Azure).
• Version Control: Confident with Git / GitHub workflows.
• English: Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team.
• Availability: Able to work EU hours with a 2–3 hour shift toward US West Coast time to ensure daily overlap with the client team.

Desired Skills

• Experience testing REST APIs and backend microservices at scale.
• Familiarity with distributed computing frameworks (e.g., Apache Spark, Kafka) and MPP SQL query engines (e.g., Presto, Trino, or similar).
• Understanding of modern data lakehouse concepts, open table formats (Apache Iceberg), and data warehousing.
• Experience with data connectivity drivers: JDBC, ODBC, Arrow Flight.
• Performance testing with JMeter or comparable load-testing tools.
• Kubernetes on managed services (GKE / EKS / AKS) and multi-cloud exposure.
• IaC tools such as Terraform.
• Understanding of query plan generation, query acceleration / materializations, and metadata integrity in distributed data systems.
  Please note: We can consider only candidates currently residing in the EU, EEA, or the UK