Jobs at Djinni

The Company:

Our client provides comprehensive operational support and a range of expert services to the world’s leading insurers, brokers, fleet managers, and automotive manufacturers. The client helps the global insurance market handle millions of claims each year in the most cost-effective and efficient ways possible. The Group is embarking on an exciting and challenging transformation program and our software solutions are a driving force behind this strategy using cloud computing and leading-edge design patterns. 

The Role:

This is a great opportunity for an experienced .NET site reliability software Engineer to join a talented Software Development team working on a variety of projects within a distributed team environment across the UK, Spain and Poland, to build and maintain Azure based applications for our strategic global platform. You will bring with you prior experience of developing applications written in .NET Framework or .NET Core, working in medium sized development teams utilizing features such as Azure web apps, SQL PaaS databases, blob storage, service bus, and other Azure services. Also extensive experience with docker containerization, Unix/Linux and Powershell scripts. The Group is embarking on an exciting and challenging transformation program, and our software solutions are a driving force behind this strategy to deliver cloud based computing and leading-edge design and architecture to our business.

Key Responsibilities 

• Understand our Platform's architecture and moving parts.
• Support docker containerisation, testing, and deployment of the remaining services (most have already been containerised).
• Mock external integrations to enable running the platform end-to-end locally using Docker containers.
• Contribute to the design, implementation and orchestration of docker containers using Azure Container Apps.
• Provide guidance and support to developers on successfully leveraging docker containerisation technologies.
• Promote best practices for setting up the pipelines that build our Docker containers.
• Redesign and optimize data seeding for our database image.

• Research and implement performance improvements in the containers, both locally and in Azure.

   

Knowledge And Experience

• A .NET software engineer at heart with 5+ years experience.
• Expertise in Entity Framework, Dependency Injection, Asynchronous programming, Event-Driven architecture, and Service Bus.
• Proficiency in Microsoft SQL and T-SQL.
• Advanced PowerShell scripting skills.
• Unix/Linux previous experience.
• Solid understanding of Azure DevOps pipelines and related concepts (e.g., YAML pipelines, CI/CD, artifact management, release strategies).
• Hands-on experience with Docker containers and tools such as Podman or Docker Desktop.
• Previous exposure to Angular and TypeScript (preferred).
• Previous exposure to Azure Chaos Studio (preferred).

Who We Are

At Patrianna LTD, we’re building a global social entertainment platform, focusing on social gaming for the North American market. With a reach of up to 150 million players worldwide, we combine creativity and technical excellence to lead in the dynamic world of social gaming.

Who We’re Looking For

We are seeking an exceptional Lead Java/Fullstack Developer with a profound, product-first mindset. This isn't just a coding role, it's a leadership position where you will be the primary advocate for user experience and workflow excellence within our backoffice system. 

We are looking for someone who:

Drives Vision and Strategy: You don't wait for specs. You proactively analyze internal operations (across compliance, risk, support) to identify systemic friction and inefficiencies. You will set the technical and UX direction for our backoffice solution, ensuring it evolves into a truly intuitive, efficient, and scalable platform for non-technical users.

Champions the Internal User: You are deeply passionate (perhaps even obsessive) about workflow clarity and interface logic. You treat our internal (admin) users with the same care and respect a product designer shows external customers. You are compelled to build tools that people genuinely want to use.

Mentors and Elevates: As a Lead, you’re ready to guide, mentor, and set a high bar for technical quality and UX design for others working on the backoffice system. You take pride in simplifying complexity and enabling your teammates to deliver their best work.

If you thrive on full ownership, are energized by the challenge of solving complex business problems through elegant UX, and are ready to be the driving force behind a mission-critical platform, we want to talk to you. Come and help us define what a world-class backoffice system looks like.

Responsibilities

• Lead Technical and Product Direction: Define the technical architecture and contribute to the product roadmap for the backoffice system, ensuring it meets the strategic needs of internal operations (Compliance, Risk, Support).
• Drive UX/Workflow Excellence: Deeply analyze internal user workflows to proactively identify and eliminate systemic friction, ensuring the backoffice platform is intuitive, efficient, and genuinely enjoyable for non-technical users.
• Mentor and Elevate the Team: Serve as a technical guide and mentor, setting a high bar for engineering quality, clean code, comprehensive testing, and thoughtful UX design across the backoffice development team.
• Full-Stack Feature Development: Design, develop, and evolve robust full-stack features, connecting frontend logic in Retool with scalable, high-performance backend APIs and data layers (Java/Spring Boot).
• Stakeholder Collaboration: Work closely with non-technical stakeholders to gather feedback, translate complex business requirements, and deliver impactful, practical technical solutions.
• System Ownership & Reliability: Take end-to-end ownership of the system's reliability, security, and usability, championing best practices and managing technical debt.

• Proactive Challenge: Challenge unclear or inefficient requirements and actively suggest smarter, more elegant, and scalable approaches to solving core business problems.

   

Requirements

Must Have

• 8+ years of production experience with Java and its ecosystem
• Solid Java knowledge with a strong understanding of JVM internals
• Eagerness to work as a full-stack developer, using Retool for GUI and Java for backend (Retool experience not required)
• Excellent system design skills, able to describe, document, and implement scalable architectures
• Strong relational database expertise (preferably PostgreSQL), including query optimization and performance tuning
• Deep understanding of messaging concepts (Kafka or similar)
• Good understanding of concurrency concepts and principles
• Exceptional troubleshooting skills, able to resolve complex production issues effectively
• Strong sense of user experience and workflow design—not just functional correctness, but clarity and usability
• Ability to collaborate with non-technical stakeholders, translating business needs into practical technical solutions
• Demonstrated ownership and initiative, taking responsibility for delivering solutions and driving team success
• Leadership experience, including mentoring, facilitating technical discussions, and fostering collaboration
• Upper-intermediate English proficiency, with clear communication for technical and non-technical audiences

Would Be a Plus

• Experience with ReTool or similar platforms
• Experience in fullstack development, especially in B2B or internal-facing systems
• A keen eye for UI/UX quality — attention to layout, clarity, consistency, and overall ease of use
• Experience with Clickhouse

• Experience in iGaming

   

Our Tech Stack

• Java 24
• Spring Boot 3.5.8
• Google Cloud Platform:
  • Kubernetes
  • Kafka
  • AlloyDB for PostgreSQL
  • Spanner
• Ebean ORM
• Flyway
• Redis
• Quartz
• Websockets
• ReTool
• Test Containers
• Locust for perf testing
• Jenkins/ArgoCD
• ELK/Sentry/Grafana/Pager Duty

• Jira/Confluence/Slack/Bitbucket

   

We offer

• Modern tech stack and clean codebase
• Autonomy to shape features and improve systems
• Minimal bureaucracy and quick decision-making

• A collaborative and passionate team that values high standards

   

Other Benefits

Full Remote Work: Enjoy the flexibility of working remotely from wherever you feel most productive.
Generous Leave Policy: Take advantage of 30 days of paid time off, encompassing both vacation and sick leave, to ensure you can recharge and recover when needed. Take your time on bank holidays as well.
Company Events: Engage in our vibrant company culture through a variety of informal events designed to foster camaraderie and teamwork.
Continuously Development: Get an opportunity to join a fast-growing business where the sky’s the limit.

About us:
Data Science UA is a service company with strong data science and AI expertise. Our journey began in 2016 with the organization of the first Data Science UA conference, setting the foundation for our growth. Over the past 9 years, we have diligently fostered the largest Data Science Community in Eastern Europe, boasting a network of over 30,000 AI top engineers.

About the client:
We are working with a new generation of data service provider, specializing in data consulting and data-driven digital marketing, dedicated to transforming data into business impact across the entire value chain of organizations. The company’s data-driven services are built upon the deep AI expertise the company’s acquired with a 1000+ client base around the globe. The company has 1000 employees across 20 offices who are focused on accelerating digital transformation.

About the role:
We are seeking a Senior Data Engineer (Azure) to design and maintain data pipelines and systems for analytics and AI-driven applications. You will work on building reliable ETL/ELT workflows and ensuring data integrity across the organization.

Required skills:
- 6+ years of experience as a Data Engineer, preferably in Azure environments.
- Proficiency in Python, SQL, NoSQL, and Cypher for data manipulation and querying.
- Hands-on experience with Airflow and Azure Data Services for pipeline orchestration.
- Strong understanding of data modeling, ETL/ELT workflows, and data warehousing concepts.
- Experience in implementing DataOps practices for pipeline automation and monitoring.
- Knowledge of data governance, data security, and metadata management principles.
- Ability to work collaboratively with data science and analytics teams.
- Excellent problem-solving and communication skills.

Responsibilities:
- Transform data into formats suitable for analysis by developing and maintaining processes for data transformation;
- Structuring, metadata management, and workload management.
- Design, implement, and maintain scalable data pipelines on Azure.
- Develop and optimize ETL/ELT processes for various data sources.
- Collaborate with data scientists and analysts to ensure data readiness.
- Monitor and improve data quality, performance, and governance.

About the company
Turning marketing into a market-domination weapon, we created a new category - the marketplace for future customers. Businesses shop for leads as they shop for products in e-commerce: you see everything about a lead before you buy - full transparency, control, and predictable outcomes. We’re the #1 lead marketplace in the USA, and we’re accelerating.

Role overview
This role exists to build and scale a high-performing team across sales, marketing, tech, and operations. You’ll own the full hiring cycle globally, with a strong focus on quality, speed, and long-term impact on the business. Your work directly shapes how fast and how well the company grows.

🔧 What You’ll Be Doing:

• Own end-to-end recruitment for sales, marketing, tech, and operational roles
• Source and attract top-tier talent globally, with a strong focus on the USA and Eastern Europe
• Build and maintain strong talent pipelines using direct sourcing and proactive outreach
• Partner closely with founders and department leads to translate business goals into hiring plans
• Lead and mentor one in-house recruiter, setting standards and improving hiring processes
• Drive a consistent, high-quality candidate experience from first contact to offer

• Track hiring progress and quality, adjusting strategy based on real results

   

✅ What Makes You a Strong Fit:

• 4+ years of experience in recruitment, preferably in SaaS, tech, or fast-scaling companies
• Proven track record of hiring in the USA, Eastern Europe, and international markets
• Strong sourcing skills across LinkedIn, boolean search, and multi-channel outreach
• Ability to manage hiring pipelines independently and deliver roles end-to-end
• Ownership mindset with high standards for talent quality and accountability

• Fluent English for daily communication with candidates and stakeholders

   

➕ Bonus if you have:

• Experience hiring sales or GTM roles in tech companies
• Background in real estate, PropTech, or marketplaces
• Experience building hiring processes from scratch

• Hands-on experience mentoring junior recruiters

   

🤝 Why You’ll Love It Here:

• You’ll work at the core of a product-led, AI-powered startup where data drives every decision
• Your work will ship fast and impact thousands of users
• High autonomy, low bureaucracy: we trust you to own your domain
• Remote-first culture with flexible hours and async-friendly communication
• Salary (fixed base) ABOVE the market average
• A smart, passionate team that moves fast, supports each other, and builds cool stuff
• 15 paid vacation days plus 5 paid sick days annually
• Paid access to courses, books, and growth resources
• Real decision-making power and ownership of your results

#vacancy #Contact Center Supervisor FinTech #Cyprus

📍 Office in Paphos, on-site only
💶 Salary: €2500
🇺🇦 Ukrainian candidate preferred

We are looking for a strong, people-oriented, and motivating Contact Center Supervisor who can keep the team aligned, develop agents, and maintain a high level of service quality.

Your Responsibilities
• Monitor operator performance: discipline, quality, script adherence.
• Conduct quick briefings and provide daily team support.
• Listen to calls and provide constructive feedback.
• Train newcomers and develop existing operators.
• Monitor KPIs: SLA, response speed, conversion, quality.
• Manage schedules, tasks, and workload distribution.
• Handle complex or escalated customer cases.
• Prepare short shift and performance reports.

Who You Are
• Experience as a supervisor or senior operator (6–12 months preferred).
• Able to manage a team and maintain discipline.
• Analytical and confident with spreadsheets.
• Stress-resistant, tactful, and strong in communication.
• Initiative-driven, flexible, and responsible.

Nice to Have
• Experience in financial services, lending, or sales.
• Skills in coaching or conducting mini-trainings.
• Understanding of contact center logic and workflows.

We Offer
• Real growth opportunities up to a department lead.
• Clear processes and consistent HR support.

Game Designer

24PLAY is a product company from Ukraine that has been developing and publishing mobile games since 2019.

We are a team of professionals who have launched dozens of popular games and gained over 100 million satisfied players worldwide. Our games include Zombiepunk, Blitzkrieg Assault, Street Dude, and more.

We are currently looking for a Game Designer to share our core company values:

• Creativity: We actively encourage and embrace each other’s ideas, transforming them into reality through collaboration and innovative thinking.
• Integrity: We commit to providing honest feedback and realistically assessing situations, fostering a culture of trust and transparency.
• Productivity: We strive to optimize our workflows to achieve the best possible results in the shortest timeframe, ensuring efficiency and effectiveness in our operations.
• Uncompromising Quality: Our commitment to excellence drives us to prioritize the quality of our work above all else, ensuring that we consistently deliver outstanding results.

• Healthy Lifestyle: We advocate for a healthy lifestyle and stand against harmful habits, promoting well-being and balance within our team.

   

We are looking for a professional for the role that requires:

• Full-time job;

• Office-based in Kyiv.

   

Key responsibilities:

• Idea Development: Generate original and engaging game ideas for mobile games of all complexity levels (from hybrid-casual to Casual and Midcore).
• Design: Create gameplay, levels, and mechanics that will inspire players.
• Documentation Creation: Develop detailed game documents, pitches, and presentations describing game and economic systems, game rules, monetization systems, and other important product elements.
• Balancing: Balance the game mechanics, progression systems, and economy.
• Team Interaction: Work collaboratively with developers, artists, and other team members to successfully integrate gameplay and ensure high product quality.

• Analysis and Optimization: Work with analytics systems, identify problems, and propose changes to provide a better gameplay experience.

   

Our ideal candidate:

• English Language: English level B1 or higher.
• Game Design Experience: Experience working as a Game Designer in mobile games.
• Creativity: Ability to find unconventional and interesting solutions that make our games unique.
• Market Knowledge: Understanding of the mobile games market and popular mechanics, as well as a desire to implement innovative solutions.
• Proficiency in Spreadsheets: Good understanding of mathematics, knowledge of working with Google Spreadsheets, and creating balance sheets.
• Teamwork: Willingness to collaborate with other team members.

• Analytical Skills: Basic understanding of methods for analyzing game metrics data, organizing information, and creating reports.

   

Nice to have:

• Knowledge of Figma for effective collaboration and visual documentation.
• Knowledge of the Unity game engine.
• Experience conducting A/B testing to optimize game features and mechanics.
• Ability to work independently with analytical systems (e.g., Amplitude, Firebase, GameAnalytics).
• Experience in game balancing for midcore games.

• Experience in level design for action-adventure or similar games, as well as narrative design.

   

Why join our team?

• Fully Legal: Official employment in full compliance with Ukrainian labor legislation, including paid vacation (24 days) and sick leave (unlimited).
• Professional Team: A high-performing group of skilled individuals committed to excellence.
• No Overtime: We prioritize a healthy work-life balance, with no overtime required.
• Stable Payments: No payment delays since the foundation of the company.
• Bonus System: A unique reward system designed to motivate employees by aligning their performance with the company’s financial goals.
• Professional Development: Access to mentorship programs and our internal library for continuous growth.
• Events: Enjoy board games, masterclasses, corporate events, sports activities, and free English classes.
• Comfortable Workspace: A modern office in Kyiv featuring a spacious lounge, fully-equipped kitchen, sports zone, cinema, and complimentary spa facilities for employees.

• 35-Hour Work Week: Reduced working hours as a benefit for experienced employees.

   

Ready to create the next gaming hit? Apply now and join 24Play! 🚀

Join the team of innovative high-end web & mobile development leaders!

WeSoftYou works with impact-first companies from all around the globe, using a data-driven approach and continuously increasing our operational effectiveness.

We create web and mobile solutions, as well as custom B2B and B2C applications for various industries and business areas, including Healthcare, e-learning, Retail, Web3, Fintech, and AdTech.

👉 Required Tech Skills:

• Strong experience as a Backend / Golang Engineer (Senior level).
• Proven ability to work autonomously with minimal supervision.
• Experience designing and evolving long-lived systems used by real customers.
• Solid understanding of backend architecture, data modeling, and scalability considerations.
• Comfort working with NoSQL databases (Firestore or similar).
• High code quality standards combined with a pragmatic, product-focused mindset.
• Ability to ask the right questions, propose solutions, and take responsibility for outcomes.

👉 About you:

• Problem solver: You are a pragmatic and solution-oriented engineer who is interested in hard problems and delivering value;
• Impact Maker: You want to help build an innovative product used by tens of thousands of users and leave your mark;
• Best Practices: You are an organized worker who follows best practices regarding code quality, testing, and code reviews;
• Curiosity: You are a curious and open-minded developer who is eager to learn a new language, and banking domain and introduce new tools and services where it can help us grow;

• Team player: You have good communication skills, are comfortable working in a team, and can easily work with non-technical colleagues.

   

👉 Responsibilities:

• Take end-to-end ownership of backend features — from clarification and design to implementation and delivery.
• Translate high-level product requirements into technical plans and execution steps.
• Write clean, maintainable, and scalable Go code.
• Reuse existing data structures whenever possible and introduce new entities only when truly necessary.
• Proactively suggest improvements to architecture, data models, and system design.
• Balance engineering excellence with pragmatism — delivering value early while planning for long-term improvements.

• Collaborate closely with product and engineering teammates in an agile environment.

   

👉 What we offer:

📈Professional Growth opportunities:

— Ambitious goals and interesting projects;
— Regular & transparent performance review and feedback process;
— Possibility for both vertical or horizontal growth (in case you want to try a different path).

🎁Benefits program

— 18 working days of fully paid vacation;
— Free tax reporting support by our Financial department;
— Help with individual entrepreneurs’ questions and accounting support;
— Financial support and additional days off for various occasions (e.g. marriage, childbirth, etc.);
 

😌Comfortable Working conditions

— Flexible working hours;
— Provision of required equipment;
— Remote working model.

24PLAY is a product company from Ukraine that has been developing and publishing mobile games since 2019.

We are a team of professionals who have launched dozens of popular games and gained over 100 million satisfied players worldwide. Our games include Zombiepunk, Blitzkrieg Assault, Street Dude, and more.

We are looking for a creative and structured Narrative Designer to join our team. You will be responsible for building the foundation of our game worlds, crafting engaging plots, and writing character-driven dialogues that keep players hooked. As we focus onmobile titles, your challenge will be to tell compelling stories within the fast-paced flow of mobile gameplay.

Our core company values:

Creativity: We actively encourage and embrace each other’s ideas, transforming them into reality through collaboration and innovative thinking.

Integrity: We commit to providing honest feedback and realistically assessing situations, fostering a culture of trust and transparency.

Productivity: We strive to optimize our workflows to achieve the best possible results in the shortest timeframe, ensuring efficiency and effectiveness in our operations.

Uncompromising Quality: Our commitment to excellence drives us to prioritize the quality of our work above all else, ensuring that we consistently deliver outstanding results.

Healthy Lifestyle: We advocate for a healthy lifestyle and stand against harmful habits, promoting well-being and balance within our team.

We are looking for a professional for the role that requires:

• Full-time job;

• Office-based in Kyiv.

   

Key responsibilities:

• World Building: Create the narrative foundation, including setting, themes, tone, and detailed character bios/arcs.
• Scriptwriting: Write engaging scripts, branching dialogues, quest descriptions, and UI/UX copy.
• Narrative Design: Design interactive structures and logic (variables, flags, and choices) to ensure story continuity.
• Documentation: Create and maintain clear narrative bibles, flowcharts, and character relationship diagrams.
• Collaboration: Work closely with Game Designers, Artists, and Developers to align the story with gameplay mechanics and pacing.

• Quality Assurance: Review game builds to ensure the narrative is implemented correctly and provides the intended emotional journey.

   

Our ideal candidate:

• Experience: 1+ years of experience in the game industry as a Narrative Designer or Writer.
• Writing Skills: A proven ability to write concise, clear, and character-true dialogue.
• Storytelling Mastery: A solid grasp of story structure, pacing, and how to create immersive interactive scenes.
• Technical Literacy: Familiarity with narrative tools (e.g., Miro, Articy, or Twine) and the ability to work within engine-ready formats (spreadsheets or markup).

• Gamer Heart: You are an avid gamer with a deep interest in geek culture and mobile game trends.

   

Nice to have:

• Experience with branching dialogue systems and non-linear storytelling.
• Experience in casual/F2P mobile games and understanding of their monetization and retention mechanics.
• Familiarity with Unity.

• A background in screenwriting, creative writing, or filmmaking.

   

Why join our team?

• Fully Legal: Official employment in full compliance with Ukrainian labor legislation, including paid vacation (24 days) and sick leave (unlimited).
• Professional Team: A high-performing group of skilled individuals committed to excellence.
• No Overtime: We prioritize a healthy work-life balance, with no overtime required.
• Stable Payments: No payment delays since the foundation of the company.
• Bonus System: A unique reward system designed to motivate employees by aligning their performance with the company’s financial goals.
• Professional Development: Access to mentorship programs and our internal library for continuous growth.
• Events: Enjoy board games, masterclasses, corporate events, sports activities, and free English classes.
• Comfortable Workspace: A modern office in Kyiv featuring a spacious lounge, fully-equipped kitchen, sports zone, cinema, and complimentary spa facilities for employees.

• 35-Hour Work Week: Reduced working hours as a benefit for experienced employees

   

Ready to create the next gaming hit? Apply now and join 24Play! 🚀

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

About the client:
Our client is an IT company that develops technological solutions and products to help companies reach their full potential and meet the needs of their users. The team comprises over 600 specialists in IT and Digital, with solid expertise in various technology stacks necessary for creating complex solutions.

About the role:
We are looking for an experienced Senior/Middle Data Scientist with a passion for Large Language Models (LLMs) and cutting-edge AI research. In this role, you will design and implement a state-of-the-art evaluation and benchmarking framework to measure and guide model quality, and personally train LLMs with a strong focus on Reinforcement Learning from Human Feedback (RLHF). You will work alongside top AI researchers and engineers, ensuring the models are not only powerful but also aligned with user needs, cultural context, and ethical standards.

Requirements:
Education & Experience:
- 3+ years of experience in Data Science or Machine Learning, preferably with a focus on NLP.
- Proven experience in machine learning model evaluation and/or NLP benchmarking.
- Advanced degree (Master’s or PhD) in Computer Science, Computational Linguistics, Machine Learning, or a related field is highly preferred.
NLP Expertise:
- Good knowledge of natural language processing techniques and algorithms.
- Hands-on experience with modern NLP approaches, including embedding models, semantic search, text classification, sequence tagging (NER), transformers/LLMs, RAGs.
- Familiarity with LLM training and fine-tuning techniques.
ML & Programming Skills:
- Proficiency in Python and common data science and NLP libraries (pandas, NumPy, scikit-learn, spaCy, NLTK, langdetect, fasttext).
- Strong experience with deep learning frameworks such as PyTorch or TensorFlow for building NLP models.
- Solid understanding of RLHF concepts and related techniques (preference modeling, reward modeling, reinforcement learning).
- Ability to write efficient, clean code and debug complex model issues.
Data & Analytics:
- Solid understanding of data analytics and statistics.
- Experience creating and managing test datasets, including annotation and labeling processes.
- Experience in experimental design, A/B testing, and statistical hypothesis testing to evaluate model performance.
- Comfortable working with large datasets, writing complex SQL queries, and using data visualization to inform decisions.
Deployment & Tools:
- Experience deploying machine learning models in production (e.g., using REST APIs or batch pipelines) and integrating with real-world applications.
- Familiarity with MLOps concepts and tools (version control for models/data, CI/CD for ML).
- Experience with cloud platforms (AWS, GCP, or Azure) and big data technologies (Spark, Hadoop, Ray, Dask) for scaling data processing or model training.
Communication:
- Experience working in a collaborative, cross-functional environment.
- Strong communication skills to convey complex ML results to non-technical stakeholders and to document methodologies clearly.

Nice to have:
Advanced NLP/ML Techniques:
- Prior work on LLM safety, fairness, and bias mitigation.
- Familiarity with evaluation metrics for language models (perplexity, BLEU, ROUGE, etc.) and with techniques for model optimization (quantization, knowledge distillation) to improve efficiency.
- Knowledge of data annotation workflows and human feedback collection methods.
Research & Community:
- Publications in NLP/ML conferences or contributions to open-source NLP projects.
- Active participation in the AI community or demonstrated continuous learning (e.g., Kaggle competitions, research collaborations) indicating a passion for staying at the forefront of the field.
Domain & Language Knowledge:
- Familiarity with the Ukrainian language and context.
- Understanding of cultural and linguistic nuances that could inform model training and evaluation in a Ukrainian context.
- Knowledge of Ukrainian benchmarks, or familiarity with other evaluation datasets and leaderboards for large models, can be an advantage given the project’s focus.
MLOps & Infrastructure:
- Hands-on experience with containerization (Docker) and orchestration (Kubernetes) for ML, as well as ML workflow tools (MLflow, Airflow).
- Experience in working alongside MLOps engineers to streamline the deployment and monitoring of NLP models.
Problem-Solving:
- Innovative mindset with the ability to approach open-ended AI problems creatively.
- Comfort in a fast-paced R&D environment where you can adapt to new challenges, propose solutions, and drive them to implementation.

Responsibilities:
- Analyze benchmarking datasets, define gaps, and design, implement, and maintain a comprehensive benchmarking framework for the Ukrainian language.
- Research and integrate state-of-the-art evaluation metrics for factual accuracy, reasoning, language fluency, safety, and alignment.
- Design and maintain testing frameworks to detect hallucinations, biases, and other failure modes in LLM outputs.
- Develop pipelines for synthetic data generation and adversarial example creation to challenge the model’s robustness.
- Collaborate with human annotators, linguists, and domain experts to define evaluation tasks and collect high-quality feedback
- Develop tools and processes for continuous evaluation during model pre-training, fine-tuning, and deployment.
- Research and develop best practices and novel techniques in LLM training pipelines.
- Analyze benchmarking results to identify model strengths, weaknesses, and improvement opportunities.
- Work closely with other data scientists to align training and evaluation pipelines.
- Document methodologies and share insights with internal teams.

The company offers:
- Competitive salary.
- Equity options in a fast-growing AI company.
- Remote-friendly work culture.
- Opportunity to shape a product at the intersection of AI and human productivity.
- Work with a passionate, senior team building cutting-edge tech for real-world business use.

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

About the client:
Our client is an IT company that develops technological solutions and products to help companies reach their full potential and meet the needs of their users. The team comprises over 600 specialists in IT and Digital, with solid expertise in various technology stacks necessary for creating complex solutions.

About the role:
We are looking for an experienced Senior/Middle Data Scientist with a passion for Large Language Models (LLMs) and cutting-edge AI research. In this role, you will focus on designing and prototyping data preparation pipelines, collaborating closely with data engineers to transform your prototypes into scalable production pipelines, and actively developing model training pipelines with other talented data scientists. Your work will directly shape the quality and capabilities of the models by ensuring we feed them the highest-quality, most relevant data possible.

Requirements:
Education & Experience:
- 3+ years of experience in Data Science or Machine Learning, preferably with a focus on NLP.
- Proven experience in data preprocessing, cleaning, and feature engineering for large-scale datasets of unstructured data (text, code, documents, etc.).
- Advanced degree (Master’s or PhD) in Computer Science, Computational Linguistics, Machine Learning, or a related field is highly preferred.
NLP Expertise:
- Good knowledge of natural language processing techniques and algorithms.
- Hands-on experience with modern NLP approaches, including embedding models, semantic search, text classification, sequence tagging (NER), transformers/LLMs, RAGs.
- Familiarity with LLM training and fine-tuning techniques.
ML & Programming Skills:
- Proficiency in Python and common data science and NLP libraries (pandas, NumPy, scikit-learn, spaCy, NLTK, langdetect, fasttext).
- Strong experience with deep learning frameworks such as PyTorch or TensorFlow for building NLP models.
- Ability to write efficient, clean code and debug complex model issues.
Data & Analytics:
- Solid understanding of data analytics and statistics.
- Experience in experimental design, A/B testing, and statistical hypothesis testing to evaluate model performance.
- Comfortable working with large datasets, writing complex SQL queries, and using data visualization to inform decisions.
Deployment & Tools:
- Experience deploying machine learning models in production (e.g., using REST APIs or batch pipelines) and integrating with real-world applications.
- Familiarity with MLOps concepts and tools (version control for models/data, CI/CD for ML).
- Experience with cloud platforms (AWS, GCP, or Azure) and big data technologies (Spark, Hadoop, Ray, Dask) for scaling data processing or model training.
Communication & Personality:
- Experience working in a collaborative, cross-functional environment.
- Strong communication skills to convey complex ML results to non-technical stakeholders and to document methodologies clearly.
- Ability to rapidly prototype and iterate on ideas

Nice to have:
Advanced NLP/ML Techniques:
- Familiarity with evaluation metrics for language models (perplexity, BLEU, ROUGE, etc.) and with techniques for model optimization (quantization, knowledge distillation) to improve efficiency.
- Understanding of FineWeb2 or similar processing pipelines approach.
Research & Community:
- Publications in NLP/ML conferences or contributions to open-source NLP projects.
- Active participation in the AI community or demonstrated continuous learning (e.g., Kaggle competitions, research collaborations) indicating a passion for staying at the forefront of the field.
Domain & Language Knowledge:
- Familiarity with the Ukrainian language and context.
- Understanding of cultural and linguistic nuances that could inform model training and evaluation in a Ukrainian context.
- Knowledge of Ukrainian text sources and data sets, or experience with multilingual data processing, can be an advantage given the project’s focus.
MLOps & Infrastructure:
- Hands-on experience with containerization (Docker) and orchestration (Kubernetes) for ML, as well as ML workflow tools (MLflow, Airflow).
- Experience in working alongside MLOps engineers to streamline the deployment and monitoring of NLP models.
Problem-Solving:
- Innovative mindset with the ability to approach open-ended AI problems creatively.
- Comfort in a fast-paced R&D environment where you can adapt to new challenges, propose solutions, and drive them to implementation.

Responsibilities:
- Design, prototype, and validate data preparation and transformation steps for LLM training datasets, including cleaning and normalization of text, filtering of toxic content, de-duplication, de-noising, detection and deletion of personal data, etc.
- Formation of specific SFT/RLHF datasets from existing data, including data augmentation/labeling with LLM as teacher.
- Analyze large-scale raw text, code, and multimodal data sources for quality, coverage, and relevance.
- Develop heuristics, filtering rules, and cleaning techniques to maximize training data effectiveness.
- Collaborate with data engineers to hand over prototypes for automation and scaling.
- Research and develop best practices and novel techniques in LLM training pipelines.
- Monitor and evaluate data quality impact on model performance through experiments and benchmarks.
- Research and implement best practices in large-scale dataset creation for AI/ML models.
- Document methodologies and share insights with internal teams.

The company offers:
- Competitive salary.
- Equity options in a fast-growing AI company.
- Remote-friendly work culture.
- Opportunity to shape a product at the intersection of AI and human productivity.
- Work with a passionate, senior team building cutting-edge tech for real-world business use.

QA Madness is a European IT service company focusing strongly on QA and cyber security. The company was founded in 2013 and is headquartered in Poland.
 Currently, we are searching for an experienced General QA Engineer to become a great addition to our team. Our client is looking for a General QA Engineer for the aviation project. You will play a key role in the development of an automation framework following best practices. Must have good communication skills in English.   

Work type: Remote. 
Technical level: Middle. 
Job category: QA. 
Project: Aviation project. 
English level: Upper-Intermediate.   

Responsibilities: 
Execute automation test suite and analyze/report results; 
Manual testing with existing test cases; 
Plan and describe test scenarios for future automation in cooperation with colleagues; 
Implement new automation tests; 
Participate in team meetings to discuss task implementation details from a QA perspective; 
Create detailed testing documentation to grow the internal knowledge base; 
Search and try new testing solutions that can bring benefits; 
Be part of a full-stack development team; 
Look for new approaches in automation and apply best practices.   

Required Skills: 
2+ years of experience working with Manual and Automation testing; General knowledge and practical experience writing web automation using JavaScript; 
Strong proficiency in TypeScript and experience with testing frameworks such as Playwright and WebDriver.io; 
Knowledge and experience working with k6; 
Experience with web testing frameworks and tools; 
Understanding of software development processes, stages, concepts, and methodologies of Quality Assurance; 
Experience in test case development, execution and maintenance; Experience with CI/CD tools; 
Strong analytical and diagnostic skills, attention to detail; 
Willingness to ask for help from colleagues and to help others; Knowledge and experience working with Appium for Mobile Automation (will be a plus); 
Upper-intermediate English level.   

What We Offer: 
Competitive salary in USD or EUR and good compensation package (reviews on demand to ensure your compensation reflects your growth and impact); 
Corporate English courses with native speakers; 
Remote work opportunity; 
Flexible work schedule (Enjoy the freedom to start your 8-hour workday at a time that fits your schedule best, anytime between 8 a.m. and 11 a.m.); 
The ability to focus on your work: a lack of bureaucracy and micromanagement (no tracking tools).   

Steps of the interview process: 
STEP 1: Send your resume and complete the questionnaire. 
STEP 2: Go through the screening interview with a Tech Recruiter. STEP 3: Interview with technical specialists. 
STEP 4: Interview with a client.   

Please note, this job is a full-time position, and it is relevant only if you meet all requirements. Any candidate who fails to meet the requirements will not be considered for the job.
 

Hello 👋

We are looking for a 💪 Strong Junior to Middle Full-Stack Developer who will strengthen our team in creating a highly productive platform for managing vacancies, candidates, and employee work processes.

The platform will combine recruitment, project management, work reports, and financial operations into a single system. The main product is a web application with a separate tracker for desktop computers built on ElectronJS.

You will primarily work on the backend, helping to create reliable and scalable services, as well as occasionally developing and maintaining frontend tasks.

🛠 How You’ll Contribute:

• Develop backend logic for managing vacancies, candidates, applications, work reports, and payments.
• Build and maintain APIs (endpoints) and business logic.
• Optimize database performance (PostgreSQL) and ensure system stability under high load.
• Work with Redis for caching and fast data processing.
• Support microservices architecture using NestJS monorepo with a Gateway entry point.
• Occasionally assist with frontend tasks (React, Redux Toolkit, Zustand) — dashboards, application statuses, admin panels.

• Collaborate with senior developers and take ownership of features

   

🎯 What Makes You a Perfect Fit:

• 2+ years of experience with Node.js/NestJS and PostgreSQL.
• Solid understanding of backend architecture, transactional flows, and API integrations.
• Experience working on high-load systems or products with large data flows.
• Strong TypeScript skills and a clean coding style.
• Familiarity with microservices, Docker, and CI/CD pipelines.
• Comfortable switching context when needed and supporting frontend if required (React).

👍 Nice-to-Haves:

• Experience with integrations for HR, finance, or workflow APIs.
• Understanding of system reliability, fallback mechanisms, and performance optimization.
• Interest in infrastructure monitoring and scaling services.
• Experience working with region-specific products or international setups.
• Experience working with ElectronJS.

🧰 Our Tech Stack:

NestJS, Node.js, TypeScript, PostgreSQL, React, microservices, Docker, AWS, CI/CD pipelines, high-load architecture, and provider APIs.

🚀 Hiring Process:

The hiring process is clear and concise. It starts with a 30–40-minute intro call with a Talent Partner - an opportunity to learn more about the project, Umber, and the team, as well as to discuss the candidate’s experience.

Next comes a technical interview (~1.5 hours) covering both React and Node.js. The final step is a ~30-minute conversation focused on managerial topics and organizational details.

New long-term project for an Energy client, where we will migrate business logic from Oracle to .NET, for a microservice platform to support various business cases. 

Requirements:

• 7+ years of professional experience as QA
• 5+ years of experience as an Automation QA
• Experience in Automation both API and UI
• Commercial experience with C# test automation
• Good knowledge of code-test approaches, creation, and execution test cases, requirements analysis
• Tech skills: C#/.NET, xUnit, Test Containers, Kafka, k8s, Docker, Rest Easy, git, bash
• Good English verbal and written communication skills
• A clear understanding of SDLC and STLC processes and phases

Job responsibilities:

• Analyze functional business requirements for completeness.
• Participate in Application design with the developers and come up with a thorough testing strategy for the featur.e
• Test automation using C#
• Execute test scripts and identify variations from expected results
• Create/track/retest software defects in the designated defect tracking tool
• Work closely with development and product management on auto-test coverage
• Participate in and provide input during QA process improvement initiatives
• Support documenting process
• Communicate with the stakeholders about gthe eneric status of the teams

We are looking for a tech-savvy Specialist for a long-term outstaff project. Our partnership with this client has been ongoing for over 2 years, ensuring a stable and well-established work environment.

Key Highlight: Support is strictly text-based (chat and email). No phone calls or video meetings with customers.

Work Schedule & Conditions:

• Schedule (Kyiv Time / UTC+2):
  • January – February: 09:00 – 16:00, 5 days a week (Mon–Fri).
  • March: 07:00 – 14:00, 7 days a week (Project peak phase).
• Tech Stack: Express, Vue, Mongo, Redis, AWS.
• Onboarding: Comprehensive mentorship and documentation provided (all hours are billable).
• FTE for a Ukrainian company

Role Overview:

We are looking for a tech-savvy specialist who can independently troubleshoot issues and escalate them to the development team only when necessary. This role requires a proactive self-starter who is willing to invest time in deeply understanding the platform and delivering high-touch customer support. Ideally, the candidate has formal education or hands-on experience in computer programming, IT systems, or related fields. We see the greatest value in support specialists who are comfortable providing hands-on technical assistance, including reproducing issues, working with system diagrams and technical documentation, and, when needed, reviewing the codebase or using network and diagnostic tools.

Key Responsibilities:

1. Customer Support:

• Serve as the first point of contact for clients for customer inquiries, technical issues, and support requests via various channels, including chat, email.
• Respond promptly and professionally to customer queries, providing accurate information and helpful solutions.
• Troubleshoot and diagnose software-related problems reported by customers, assisting them in resolving issues effectively.
• Utilize diagnostic tools to identify whether the issue lies in the Frontend (Vue.js), Backend (Express), or Database (MongoDB/Redis) layers.

2. Issue Resolution:

• Investigate and analyze customer issues, working closely with the customer support manager, product team, and development teams to escalate and resolve complex technical problems.
• Document and track customer interactions and issues in a ticketing system, ensuring all cases are accurately recorded and monitored for timely resolution.
• Ensure that all customer support activities align with established service level agreements (SLAs) and quality standards.
• Perform initial codebase reviews and log analysis within the AWS environment to provide developers with actionable data.

3. Customer Relationship Management:

• Build and maintain strong relationships with clients, ensuring their ongoing satisfaction with our software products and services.
• Proactively engage with customers to gather feedback, identify areas for improvement, and communicate their needs to the relevant internal teams.

4. Product Knowledge and Training:

• Develop a deep understanding of our software products and stay up-to-date with new features and enhancements.
• Provide customers with product training, guidance, and best practices to maximize their software experience and optimize usage.
• Create and maintain internal technical documentation for the knowledge base.

5. Continuous Improvement:

• Identify recurring issues or patterns in customer inquiries and collaborate with the Customer Support Manager to implement process improvements and updates to enhance the overall customer experience.

—----

Start date - asap

Experience - Tech Stack: Express, Vue, Mongo, Redis, AWS.

Responsibilities:

• Manage and update the company website (content updates, SEO, visual consistency).
• Create, schedule, and manage posts on our LinkedIn and Facebook pages.
• Developing engaging content (text, visuals, short videos, etc.).
• Manage performance metrics for the website and social media (Google Analytics, LinkedIn Insights).
• Collaborate with designers and marketing leadership to support brand consistency.
• Stay up-to-date with digital trends, tools, and best practices.
• Organization of marketing events

Requirements:

• Strong English skills (Upper-Intermediate or higher) — verbal and written.
• Understanding of digital marketing concepts and tools.
• Enthusiasm for social media and content creation.
• Copywriting skills
• Ability to work independently and meet deadlines.
• A proactive, creative mindset and willingness to learn.
• Currently studying or recently graduated in Marketing, Communications, Digital Media, or strong background in marketing or IT field.

We Offer

• Competitive salary
• Flexible schedule
• Social package
• Courses, webinars, seminars to increase professional skills
• Snacks & fruit, foosball, fun office environment
• Horizontal hierarchy. No micromanagement pressure
• Open company culture where your ideas and initiatives are valued
• Regular team building & corporate events
• International projects