Jobs at Djinni

Job Description

• Possess 3-4 years of comprehensive experience in full-stack software engineering, specifically designing and building robust enterprise applications within a professional development environment.
• This role operates under a fully remote work model, requiring the ability to effectively collaborate with distributed teams and manage tasks independently from a designated home office environment.

Required Skills:

• Demonstrated strong hands-on proficiency and extensive experience in developing and implementing solutions using the .NET framework, including advanced features and best practices.
• Mandatory expertise in designing, building, and maintaining web applications and services with ASP.NET, showcasing advanced capabilities in its various components and architectures.

Preferred Skills:

• Possess a solid working knowledge and practical experience with React, enabling the development of interactive and responsive user interfaces.
• Familiarity with TypeScript is preferred, demonstrating an understanding of its benefits for scalable and maintainable JavaScript applications.

Job Responsibilities

About the Role
We are seeking a Mid to Senior .NET Developer to help build, scale, and secure enterprise-grade healthcare applications. In this role, you will work across the full stack to design resilient back-end services, optimize relational databases, and deliver high-impact features that protect medical data and streamline healthcare operations.

You’ll thrive here if you enjoy solving complex architectural challenges in an Agile environment, championing automated testing, and collaborating across engineering, product, and UX teams.

Key Responsibilities
Core Development: Build and maintain high-availability web applications and microservices using C# and modern .NET frameworks.

Full-Stack Execution: Implement front-end components and integrate back-end APIs, ensuring seamless functionality across the entire application stack.

1. Performance & Scale: Enhance existing enterprise systems to improve throughput, scalability, and reliability for large-scale healthcare clients.
2. Database Optimization: Design, maintain, and optimize relational database schemas and complex queries to handle sensitive data efficiently.
3. Quality & Testing: Ensure enterprise-level software quality through automated unit/integration testing and active participation in peer code reviews.
4. Agile Architecture: Analyze technical requirements and design scalable software solutions within a fast-paced Agile framework.
5. DevOps Integration: Contribute to continuous integration and continuous deployment (CI/CD) pipelines and support DevOps best practices.
6. Troubleshooting: Diagnose and resolve complex technical issues across the stack to maintain optimal system performance.
7. What You Bring (Requirements)
   Experience: 3+ years (Mid) or 5+ years (Senior) of commercial software development experience using C# and .NET (.NET Core / .NET 6+).

• Database Mastery: Strong proficiency with relational databases (e.g., SQL Server, PostgreSQL), schema design, and query performance tuning.
• Architecture & Patterns: Solid understanding of Object-Oriented Programming (OOP), RESTful APIs, and scalable software architecture.
• Quality Focus: Demonstrated commitment to writing clean, maintainable code backed by automated testing.
• DevOps Awareness: Hands-on experience or familiarity with CI/CD pipelines, modern deployment strategies, and full-stack troubleshooting.
• Collaborative Mindset: Strong communication skills with experience working alongside QA, Product Management, and UX specialists.
• Nice-to-Haves
• Modern Front-End: Hands-on experience with React and TypeScript.

Domain Knowledge: Prior experience in healthtech, medical data security, HIPAA compliance, or high-security enterprise environments.

Cloud Architecture: Familiarity with AWS, Azure, or containerized environments (Docker/Kubernetes).

Department/Project Description

We are a leading healthtech solutions provider specializing in medical data security, risk mitigation, and administrative efficiency. Our proprietary platforms address critical compliance and security vulnerabilities faced by healthcare organizations worldwide. By leveraging innovative technologies for patient record linkage and identity verification, we empower healthcare systems to protect patient trust, reduce operational risk, and deliver seamless, secure services.

Streamline develops an AI-powered supply chain planning platform used by more than 2,000 companies worldwide. It is a mature product with complex planning logic, AI capabilities and many technical challenges where better solutions can still be found.

We are looking for a Trainee Manual QA Engineer to join our team and help maintain the high quality of our web product.

💡 Strong analytical thinking and the ability to solve complex problems are important to us. If you have participated in mathematics olympiads, programming competitions or similar contests, be sure to tell us—this experience may be a significant advantage.

 

What we expect:

• English at the B1 level or higher.
• Basic understanding of version control systems, particularly Git.
• Knowledge of HTTP request methods and status codes, including how they work in web applications.
• Practical experience with browser developer tools, particularly Chrome DevTools.
• Strong understanding of the software development life cycle (SDLC).
• Experience testing APIs with Postman, Insomnia or similar tools.
• A completed technical degree in Computer Science, Engineering, Mathematics or a related field is required.

It will be a plus if you have:

• Experience with test management tools such as TestRail or Qase.
• Knowledge of project management platforms such as Jira, Trello or Rally.
• Knowledge of test design techniques and the ability to apply them effectively.
• Strong communication and problem-solving skills.

What you will do:

• Thoroughly test new functionality during development to ensure high product quality.
• Identify, document and verify defects, and monitor their timely resolution.
• Participate in smoke and regression testing to verify the stability and integrity of the system.
• Create and review test documentation, including checklists, test cases and acceptance criteria.
• Test APIs using Postman, validate requests and responses, and ensure the backend works as expected.
• Gather and analyse requirements for new and existing functionality, contribute to the knowledge base and deepen your understanding of the product.

What we offer:

• Medical insurance.
• A comfortable office at the Leonardo Business Centre in central Kyiv.
• A supportive team and collaborative working environment.
• Professional and career development opportunities.
• Access to AI tools that help you work faster and more effectively.
• An opportunity to contribute to a product that continues to grow and evolve.
• Free lunches, corporate events and team activities.

📍 Working format: Candidates based in Kyiv are expected to work from our Kyiv office during the probationary period. After successful onboarding, a hybrid or remote working format may be available.

We are seeking a skilled ML/AI Engineer to join our team and deliver cutting-edge ML/AI models in the ASR domain and legal insights more broadly. The core of this role is building, deploying, and serving ML models in production. 

A key part of this role is speech engineering — prior ASR/speech experience is not a must, but a willingness to learn and grow into this domain is essential. Experience with LLM-based solutions and agentic flows is an advantage, not a requirement. 

What you’ll do: 

• Build, deploy, and serve ML models in production — the core of the role — optimizing inference performance, latency, and efficient GPU utilization. 
• Support and extend our speech solutions, including 3rd-party ASR integrations and self-hosted ML models. 
• Evaluate and optimize key ASR/ML metrics such as WER, latency, F1 score, EER, and DER. 
• Secondary: Integrate LLMs and agentic flows into production solutions where they add value, including fine-tuning existing models. 

What you’ll bring: 

Core (required): 

• Solid background in machine/deep learning, with 4+ years of experience. 
• Strong Python skills and experience working in Linux environments. 
• Familiarity with deep learning libraries (e.g., PyTorch, TensorFlow) and training workflows. 
• Experience with MLOps pipelines and serving/deploying models in production. 
• Experience optimizing models for inference, including GPU acceleration. 
• Experience with Docker, gRPC, and serverless / micro-services architectures on cloud infrastructure (AWS/GCP/Azure). 
• Experience with real-time / streaming systems and low-latency processing (e.g. streaming pipelines, live sessions). 

Nice to have (secondary / optional): 

• Experience building and productizing agentic flows and AI-driven solutions (1+ year). 
• Familiarity with LLM / agent orchestration frameworks such as CrewAI, AWS Bedrock, Temporal, AgentCore, or LiteLLM. 
• Prior ASR / speech experience — not required; willingness to learn this domain is what matters most. 

What makes Verbit unique? 

Our team of 250 professionals builds AI-driven solutions that help the world’s leading organizations get real value from their audio and video content. We serve high-end customers across the Legal, Media and Education markets with a next-generation verbal-intelligence platform that brings AI into the core of their workflows. 

Our in-house technology combines advanced LLMs, GenAI capabilities and speech AI to power everything from legal-tech automation and real-time insights to intelligent media and learning workflows. Beyond transcription or accessibility, Verbit provides actionable intelligence: smart summaries, analytics, search, knowledge extraction, legal-deposition insights and more. 

With more than 3,000 global customers relying on Verbit—including top law firms, universities, enterprises and media organizations—we’re building the future of how speech data is processed, understood and used. 

We’re a group of: 

• Tech-savvy individuals who are always open to more growth and learning opportunities 
• Adaptable and flexible people who thrive in a fast-paced, startup environment 
• Creative minds who rethink and question how to outperform past results 
• Effective communicators who can promote and represent Verbit’s tech and brand 

GameCode was founded in 2017. We build online slot games for regulated markets across the USA, Canada, Europe, and beyond. Our team consists of more than 100 specialists, and we are looking for a Python Developer with hands-on iGaming and slot math experience.

What you will do

• Implement and fine-tune slot game math models and paytables
• Build and maintain game logic in Python
• Work closely with math and game designers to achieve RTP and volatility targets
• Test, validate, and simulate game math for compliance and fairness

What we expect

• 3+ years of software engineering experience
• 2+ years of professional Python experience
• 2+ years of experience in iGaming or the slots market
• 1+ year of experience implementing slot game mathematics
• English at B2 level or higher

Nice to have

• Experience with RTP simulations and volatility analysis
• Familiarity with regulated markets such as the UK, USA or Canada
• Open-source contributions or personal Python projects

What we offer

• Fully remote work
• Flexible working hours
• Long-term B2B cooperation
• Competitive rate depending on experience
• Training budget
• A flat team structure where your input matters

Recruitment process

Short screening call → technical interview → offer.
We aim to complete the process within 2–3 weeks.

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