Jobs at Djinni

NuxGame collaborates with iGaming operators of all sizes, helping businesses enter new markets and strengthen their existing brands. As a provider of casino gaming software, the company delivers solutions that empower clients to build strong products and achieve their business objectives. We are currently looking for a QA Engineer to join our team.

What we expect from you:

• At least 2 years of relevant work experience
• Solid understanding of QA processes (goals, types of testing, test design, etc.)
• Hands-on experience in creating test documentation (test cases, checklists, bug reports)
• Clear understanding of requirements and their structure
• Experience in testing web applications (both desktop and mobile)
• Basic knowledge of HTML, CSS, and SQL
• Understanding of HTTP protocol, web applications, and client-server architecture
• Basic knowledge of test automation (unit and end-to-end testing)
• General understanding of programming fundamentals
• Experience with Selenium

Your responsibilities will include:

• Identifying and tracking issues in the products under development
• Analyzing detected defects
• Creating and maintaining test suites, preparing test data, and defining testing approaches
• Supporting and coordinating the bug-fixing process in collaboration with developers
• Keeping testing documentation up to date
• Organizing and executing different testing levels (from unit to acceptance testing)
• Understanding the programming languages used in development (JavaScript, Java, Python, PHP, C#, C++, etc.)
• Working with bug tracking systems
• Using automated testing tools

What we offer:

• Fully remote work format
• Working schedule: 09:00/10:00 – 17:00/18:00 (Monday to Friday)
• Participation in engaging and successful projects
• Competitive salary with timely payments, official employment, and 24 days of paid vacation
• Opportunities for professional development and corporate training
• Supportive team environment with a positive, stress-free culture

We value transparency, flexibility, and the growth of every team member, fostering an open and collaborative work environment.

We’d be happy to welcome you to our team!

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 Senior DevOps Engineer who is passionate about building resilient infrastructure and ensuring high availability for high-load systems. If you thrive in complex cloud-native environments and enjoy working with scalable architectures, this opportunity is for you.

 What will be your responsibilities:

• Design, build, and optimize high-load, highly available server-side platforms (Nginx, PHP-FPM, MySQL, Redis, message queues).
• Architect and maintain Kubernetes-based platforms and containerized workloads (Docker, Helm, GitOps).
• Design and operate secure network infrastructure:
  • Firewalls (iptables, UFW, security groups, NACLs)
  • Reverse proxies and L7/L4 load balancers
• Implement DDoS protection and WAF strategies (Cloudflare, rate-limiting, bot protection).
• Build and maintain observability stack:
  • Metrics (VictoriaMetrics, Prometheus)
  • APM (New Relic, OpenTelemetry)
  • Centralized logging and alerting
• Design, implement, and continuously improve CI/CD pipelines (Jenkins, GitHub Actions).
• Automate infrastructure and platform lifecycle using Infrastructure as Code and configuration management.
• Participate in architecture design, reliability engineering, and capacity planning.
• Ensure security, compliance, and audit readiness (PCI DSS, secrets management, access control).

What we expect from you:

• Strong hands-on Linux expertise (Debian, Ubuntu, systemd, networking, performance tuning).
• Deep experience with AWS:
  • Compute (EC2, ASG, EKS)
  • Networking (VPC, Load Balancers, peering)
  • Managed databases (RDS Aurora)
  • Messaging (SQS, Kafka)
• Strong database operations knowledge: MySQL HA, replication, backup strategies.
• Production experience with Kubernetes (cluster architecture, HA, upgrades, disaster recovery).
• Advanced CI/CD experience: Jenkins, GitHub Actions, GitOps practices.
• Strong Cloudflare expertise: DNS, CDN, WAF, DDoS protection.
• Infrastructure as Code: Terraform (mandatory), Ansible.
• Scripting and automation in Bash and Python.
• Solid understanding of networking and security fundamentals (TLS, IAM, VPN, firewalling, zero-trust).
• Experience working in regulated environments or with security standards (PCI DSS is a plus).

Tech Stack:

AWS, Kubernetes, Terraform, Helm, GitHub Actions, VictoriaMetrics, Grafana, New Relic, Aurora, Redis, Cloudflare, Python, Bash.

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), Monday–Friday.

Financial Stability – Timely compensation payments.

Personal Equipment Policy – Equipment is provided to ensure comfortable and efficient work.

Knowledge Sharing – We regularly gather to discuss new trends, share insights, and grow together.

Community – Work in a team of like-minded professionals who support, inspire, and tackle complex challenges together.

Creative Freedom – We encourage initiative and provide space for professional expression and implementation of your ideas.

Time-off Policy: up to 29 days off per year, including up to 5 days for health-related absence (without medical confirmation);

Atmosphere – A friendly, results-oriented environment focused on mutual respect, free from unnecessary bureaucracy and pressure.
 

We believe in unlocking the inner potential of each team member within an open and democratic culture.

We look forward to welcoming you to our team! 

🔍 Do you enjoy spotting what others might miss?
Then we definitely have something to talk about.

Softsich is a young and ambitious international product tech company that develops scalable B2B digital platforms. We are looking for a QA Engineer who will help ensure product quality through systematic testing, attention to detail, and close collaboration with the development team. If it matters to you that a product works smoothly and predictably - we’d love to get to know you.

Your key responsibilities will include:

– Testing software products (web interfaces, APIs)
– Perform testing for new brand setups
– Working with log files to analyze and identify issues.
– Creating and maintaining testing artifacts: bug reports, checklists, and test cases.
– Participating in task planning and estimation within Scrum/Agile processes.

It’s a match if you have:

– 2+ years of experience in functional testing.
– Experience testing web and mobile applications.
– Experience with API testing.
– Hands-on experience working with logs (Graylog, Splunk, Kibana, or similar tools).
– Proficiency with tools such as Git, Jira, and Confluence.
– Experience creating and maintaining test documentation (test plans, checklists, test cases).
– Ability to write clear and well-structured bug reports.
– Solid understanding of QA processes and SDLC.

What we offer:

– Flexible schedule and remote format or offices in Warsaw/Kyiv - you choose.
– 24 paid vacation days, sick leaves, and health insurance (UA-based, other locations in progress).
– A supportive, friendly team where knowledge-sharing is part of the culture.
– Coverage for professional events and learning.
– Birthday greetings, team buildings, and warm human connection beyond work.
– Zero joules of energy to the aggressor state, its affiliated businesses, or partners.

Quality is never accidental - it’s built step by step.
Send over your CV now - we’d love to get to know you better!

Automat-it is an all-in AWS Premier Partner and Managed Services Provider specializing in the startup ecosystem. With over 800 customers and 500+ AWS certifications, Automat-it brings hands-on expertise in AI, DevOps, and FinOps to empower fast-paced startups to grow, deliver & win. Our customers save significant time-to-market and optimize their cloud performance and costs.

We work across EMEA and the US, fueling innovation and solving complex challenges daily. Join us to grow your skills, shape bold ideas, and help build the future of tech.

We seek a DevOps Team Lead to anchor the expansion of our EU-based engineering team. You will mentor and coach a team of DevOps engineers while rolling up your sleeves to architect and deliver best-in-class infrastructure solutions for high-growth startups. This is a leadership role with real technical depth. You'll shape how we build, and you'll be accountable for the quality of what we deliver.

If you are interested in this opportunity, please submit your CV in English.

Work location - Remote from Ukraine.

Key Responsibilities

• Lead and manage a team of 6–8 DevOps Engineers, ensuring on-time, high-quality project deliveries
• Define and participate in creating architecture and designs for infrastructure and CI/CD solutions
• Conduct code reviews, hands-on coaching, and enforce technical best practices across the team
• Manage and track Statements of Work (SoWs) in collaboration with customers, PMO, and leadership
• Provide hands-on guidance on complex elements of build automation, continuous deployment, and IaC
• Facilitate transparent communication between the team and customers
• Manage estimations for pre-sale and sale stages

• Drive continuous learning within the team, including staying current with AI-assisted development practices using tools like GitHub Copilot, Amazon Q, or Cursor to accelerate infrastructure-as-code delivery and code reviews

   

Requirements

• Proven experience successfully leading IT projects from inception to delivery
• 2+ years of Team Lead (or similar) experience managing DevOps and/or SysAdmin teams
• 5+ years of hands-on AWS infrastructure experience; AWS certification is a plus
• 5+ years of experience with Docker, Kubernetes, and Infrastructure as Code (Terraform, CloudFormation, etc.)
• Familiarity with Configuration Management tools (Ansible, Puppet, Chef, etc.)
• Experience with CI/CD tools (Jenkins, GitHub Actions, etc.)
• Solid Linux OS and networking knowledge
• Fluent written and verbal communication in English
• Strong task management and organizational skills

• Hands-on experience with AI-assisted dev tools (GitHub Copilot, Amazon Q, Cursor) to accelerate IaC and code reviews

   

Why join Automat-it?

• Professional training and certifications covered by the company (AWS, FinOps, Kubernetes, etc.)
• International work environment
• Referral program – enjoy cooperation with your colleagues and get a bonus
• Company events and social gatherings (happy hours, team events, knowledge sharing, etc.)
• English classes
• Soft skills training

• Country-specific benefits will be discussed during the hiring process.

   

Country-specific benefits will be discussed during the hiring process.

Automat-it is committed to fostering a workplace that promotes equal opportunities for all and believes that a diverse workforce is crucial to our success. Our recruitment decisions are based on your experience and skills, recognizing the value you bring to our team.

Responsibilities

• Customer acquisition.
• Participation in the process of systemic lead generation and sales activities of the company;
• Support and processing on new and existing sales channels and sales sources;
• Participation in the process of pre-sales and sales activities;
• Lead validation, requirements gathering
• Clarification of the client’s requirements (problems) and conducting sales activities (closing deals);
• Conclusion of transactions and support of the process of entering the project/client;
• Creation of commercial offers;
• Account management out upselling and cross-selling events for new and existing company clients.
• Work on a clear track of Sales plans , sales metrix and KPIs: leads worked, calls, offers, offer value sent, deals won, new clients, revenue.

Requirements:

• 3+ years of experience in IT sales;
• Proven experience in closing deals with the ability to present
• Proven technology knowledge (service, service lines, product)
• High level of English (Upper-intermediate);
• Experience in closing deals on outsourcing and outstaffing models
• Experience in selling projects/solutions of web development and eCommerce;
• Experience in selling solutions for eCommerce (web, mobile);
• Experience with B2B and B2C segments.
• The presence of closed deals from at least 3 different sales channels (with the ability to demonstrate results);
• Would be a plus RoadShow Experience 
• Experience of Work trips and offline sales.

Will Be a Plus:

• Knowledge of the German language;
• Successful experience of sales activities in a particular region or country;
• Experience in selling solutions and services based on CMS Magento, WordPress;
• Successful sales experience in several channels;
• The ability to design and implement a sales funnel using various sales tools.

We Offer:

• In-house tech talks & knowledge sharing;
• Remote work;
• Ability to participate in RoadShows and conferences ;
• Flexible and negotiable working schedule;
• Paid sick leaves, vacations, days off;
• Growth plan and bonuses for additional responsibilities/activities;
• Fair compensation that scales with your skills

On behalf of our Client from Canada, Mobilunity is looking for a Full Stack Java Developer.

Our Client is a technology company focused on automating customs and freight logistics processes. The company’s main goal is to help customs brokers, freight forwarders, and importers simplify and optimize cross-border trade through modern, cloud-based solutions and well-structured APIs.

They are seeking a talented and experienced Full Stack Java Developer to join its fully remote team. You will play a key role in designing, developing, and maintaining a next-generation cloud-native SaaS platform for customs brokers and freight forwarders in North America. This is an exciting opportunity to contribute to a fast-paced development environment focused on high-quality design and clean code, using modern Java technologies and a service-based architecture.

Key Responsibilities:

• Design, develop, and implement new features across the full stack, including UI, backend server-side code, and functional concepts
• Work within a modular monolith architecture based on OSGI
• Ensure high performance, scalability, and security of applications
• Collaborate closely with product, design, and support teams to define and deliver new product capabilities
• Write and maintain comprehensive automated test units

Required Skills and Experience:

• 5+ years of professional experience in Full Stack Development
• Expertise in Java (preferably Java 21+)
• Strong working knowledge of Backend Server-Side development
• Experience with Service-Based Architectures (ideally OSGI/Bnd)
• Proficiency in modern UI Design/Development (e.g., Eclipse SWT or equivalent thick client/desktop application experience is a plus)
• Experience with PostgreSQL or other relational databases
• Working knowledge of developing automated test units using frameworks like JUnit/Mockito
• Familiarity with version control systems, particularly Git (GitHub)
• Ability to work independently and excel in a collaborative team environment
• At least Upper-Intermediate level of English

Nice-to-Have skills:

• Experience with reactive programming ,RXJava
• Experience using AI-powered coding tools like CoPilot

Trinity Affiliate Network is a fast-growing Dating affiliate network working with Tier-1 and Tier-2 GEOs.
We help affiliates and media buying teams scale results through high-quality offers, stable payouts, and hands-on support.

We are looking for an Affiliate Manager who can build long-term partner relationships, work confidently with numbers, and understands the specifics of CPA Dating.

Responsibilities

• Attract and onboard new affiliates and media buying teams
• Manage and grow existing partners: daily support, consulting, offer upsell
• Negotiate rates, CPA / CPL models, bonuses, and special conditions
• Monitor traffic quality: CR, retention, fraud analysis
• Optimize partner performance and select the most effective offers
• Maintain regular communication with partners (Telegram / Skype / Email)
• Keep reporting in CRM systems and Google Sheets
• Run A/B tests, analyze traffic sources and conversions
• Monitor competitors and market trends

Requirements

• 1+ year of experience as an Affiliate Manager in CPA Dating
• Solid understanding of CPA and CPL models
• Knowledge of key metrics: Click2Reg, Reg2Dep, CR, ROI, LTV, eCPA
• Confident communication with affiliates (Telegram / Skype)
• Strong negotiation skills and ability to close deals
• Basic analytical skills (Google Sheets, tracking platforms)
• English level B1 or higher

Nice to Have

• Experience working with Tier-1 GEOs
• Understanding of traffic sources (Facebook, Google, Native, Push, In-App)
• Experience scaling affiliate partners

We Offer

• Work in a fast-growing Dating / CPA niche
• Strong offers and transparent conditions
• A team that provides real support, not just “ticket-based” assistance
• Direct impact on results and growth opportunities within the network

Trinity Affiliate Network is looking for a Facebook Media Buyer with hands-on experience in the Dating / Adult vertical who can independently launch, optimize, and scale Facebook advertising campaigns.

Responsibilities

• Launch, manage, and optimize Facebook ad campaigns
• Work with creatives: creation, testing, and optimization
• Analyze traffic performance using Keitaro and CRM systems
• Daily monitoring of key metrics: CPM, CTR, CPA, Cost
• Scale profitable funnels and winning combinations
• Work with agency ad accounts

Requirements

• 6+ months of experience as a Facebook Media Buyer
• Hands-on experience with tracking platforms (Keitaro or similar)
• Experience managing ad budgets of $30,000+ per month
• Mandatory experience in the Dating vertical
• Experience with Adult networks is a plus (banner ads, member area traffic)
• Ability to work with Photoshop and/or Canva

We Offer

• Work with large advertising budgets
• Growth and scaling opportunities
• Remote work or office-based role in Cyprus

Trinity Partners is an international iGaming affiliate network working with top-tier advertisers and offering affiliates exclusive offers, strong brands, high approval rates, and stable payouts.

Our team actively participates in international conferences worldwide, follows a dynamic work approach, and provides strong opportunities for professional growth.

We are looking for an Affiliate Manager who can build long-term partnerships, work with performance metrics, and contribute to scaling traffic and results

Responsibilities

• Attract new affiliate partners and develop long-term relationships with existing ones
• Monitor traffic quality, scale campaigns, and detect/prevent fraud
• Analyze key performance metrics (KPI, EPC, ROI, LTV) and prepare insights and recommendations
• Collaborate effectively with the team and coordinate with internal stakeholders
• Monitor market trends and optimize traffic flows
• Participate in international industry conferences

Requirements

• 1+ year of experience in the iGaming vertical
• Strong communication and negotiation skills
• Ability to work independently and within a team
• English level Intermediate or higher
• Proactive, result-oriented mindset with a growth-driven attitude

Nice to Have

• Existing affiliate partner base
• Experience working with Scaleo or other tracking platforms
• Experience in developing affiliate marketing strategies

We Offer

• Work with exclusive offers and reliable advertisers
• Stable payouts and high approval rates
• Opportunity to attend international conferences
• Dynamic work environment and professional growth opportunities
• Support from an experienced and collaborative team

QIT Software is looking for a Senior PHP Developer to join our team. You'll own the maintenance, modernization, and evolution of a core billing platform built on a large-scale PHP monolith. This is a high-traffic, business-critical system running on Kubernetes infrastructure. You'll troubleshoot production issues, drive performance and scalability improvements, and contribute across the full development lifecycle -- from design through deployment.

Details:
- Schedule: Full-time, remote
- Client: USA
- Duration: long-term
- Tech stack: PHP, MySQL, AWS, Docker, etc.
Requirements

- 5+ years of strong professional PHP experience
- Solid foundation in OOP patterns, Clean Code, and SOLID principles
- Experience maintaining and improving complex legacy systems
- Strong MySQL skills -- writing efficient, high-performance queries
- Hands-on Docker and AWS experience
- Experience with AI-assisted development tools (Cursor, Claude Code, or similar)
- Business-level English (written and spoken)
- Strong debugging, analytical, and problem-solving skills

Responsibilities

- Maintain, modernize, and evolve the billing platform and its components
- Diagnose and resolve high-impact production issues in a high-traffic environment
- Drive improvements in performance, scalability, and reliability
- Produce clear technical documentation for existing and new systems
- Promote knowledge sharing and best practices across the team

Would be a plus

- Kubernetes and Helm experience
- Queue-based or asynchronous systems
- Non-relational databases
- CI/CD pipelines
- Observability tools (Datadog, Grafana)

Work conditions

- The ability to work remotely from anywhere in the world;
- Flexible work schedule, no micromanagement, no strict deadlines and free overtime work;
- Work in European and American products with a modern technology stack in different industries (Finance, Technology, Health, Construction, Media, etc.);
- Revision of wages every year or on an individual basis;
- Accounting support and full payment of taxes by the company;
- 100% compensation for remote English lessons;
- 15 paid leaves (PTO) and public holidays.

If you are a attentive, disciplined person with written English at least at an Intermediate level, and you want to start your career in IT or have experience working as a lead generator, you have a great opportunity to realize your ambitions!

We are offering a part-time vacancy for a Lead Generator for Upwork.

Responsibilities:

• Quickly applying to relevant projects according to the brief
• Writing custom Cover Letters based on examples but with room for creativity
• Analyzing pre-selected applications
• Manually searching for applications
• Keeping statistics
• Meeting lead generation targets (at least 110 applications per month)

We offer:

• Prepared materials for work
• Training and support
• Timely feedback
• Ready-to-use materials for work
• Stable salary payments
• Bonus system

Working conditions:

• Remote work
• Communication via Telegram

Requirements:

• Upwork profile (or the ability to create one)
• Written English at Intermediate or Upper Intermediate level
• Quick response
• Discipline

Special:
We are prioritising Ukrainians. 
 

About us:

Top Rated on Upwork, 100% JSS as for now. We specialize in writing scripts for web automation and scraping in Python 3.x. Our solutions include processing around 800,000 requests every 10 hours using Python 3, MySQL, and Redis with minimal resources. Due to team expansion and to relieve some responsibilities from the company owner, we are looking for someone to search for new orders on the Upwork freelance platform and accompany them.

POSITION DESCRIPTION: 

We are looking for a Business Analyst who will interact with stakeholders, development and quality assurance teams to elicit and analyze requirements, document them and create functional specifications. The candidate will contribute to every stage of the product lifecycle from research and discovery to iterative development and roll-out.
 

LOCATION: Ukraine (remote)
 

MINIMUM EXPERIENCE: 

6+ years of commercial experience in Business Analysis.
 

REQUIREMENTS: 

• Proven experience of working with external clients or handling outsourcing projects
• Solid expertise in the discovery stage of the project
• Experience and understanding of BA work on the pre-sale stage
• Basic understanding of product management/product ownership
• Understanding of business processes, optimization and automation
• Proven experience in gathering and eliciting requirements and successfully completing analytical assignments
• Knowledge of modelling notations: UML, BPMN, Data Flow
• Knowledge of API documentation and basic principles of relational databases such as MySQL
• Ability to influence stakeholders and closely collaborate with them to determine acceptable solutions
• Ability to translate business needs into software and operational requirements
• Readiness to work in dynamic environment with frequent project change
• Upper-Intermediate level of English
   

DUTIES: 

• Planning, conducting, facilitating discovery and pre-sale project workshops
• Elaborating business, functional and non-functional requirements
• Preparing and presenting discovery artifacts
• Gathering critical information from meetings with stakeholders
• Defining, translating, simplifying, and prioritizing requirements
• Creating business cases and user stories
• Creating conceptual prototypes and mock-ups
• Ensuring that designed solutions meet business needs and requirements
• Performing acceptance testing
• Creating detailed reports and giving presentations
   

NICE TO HAVE:

• Knowledge of artificial intelligence mechanics and how to work with prompts
• Experience with Power BI
• Experience in building JSON and XML documents and using them in functional specifications
• Exposure to engineering software (CAD/CAM, PDM/PLM, etc.)
   

COMPENSATION & BENEFITS:

• Competitive salary 
• Professional and friendly team 
• Flexible work schedule 
• Fully remote work mode
• Health insurance
• Paid vacation, sick leave, and other benefits 

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:
The company is a trailblazer in the world of data-driven advertising, known for its innovative approach to optimizing ad placements and campaign effectiveness through advanced analytics and machine learning techniques. Our mission is to revolutionize the advertising sector by enabling brands to reach their audiences more effectively.

About the role:
We are seeking an experienced and motivated Senior Data Scientist to join our dynamic team. The ideal candidate will have deep expertise in supervised learning, reinforcement learning, and optimization techniques. You will play a pivotal role in developing and implementing advanced machine learning models, driving actionable insights, and optimizing our advertising solutions.
This position is based in Ukraine. The team primarily works remotely, with occasional in-person meetings in the Kyiv or Lviv office.

Responsibilities:
- Develop and implement advanced supervised and reinforcement learning models to improve ad targeting and campaign performance.
- Collaborate with cross-functional teams to identify opportunities for leveraging machine learning and optimization techniques to solve business problems.
- Conduct extensive data analysis and feature engineering to prepare datasets for machine learning tasks.
- Apply optimization algorithms to enhance the effectiveness and efficiency of advertising campaigns.
- Evaluate and refine existing models to enhance their accuracy, efficiency, and scalability.
- Utilize statistical techniques and machine learning algorithms to analyze large and complex datasets.
- Communicate findings and recommendations effectively to both technical and non-technical stakeholders.
- Stay updated with the latest advancements in machine learning, reinforcement learning, and optimization techniques.
- Work with engineering teams to integrate models into production systems.
- Monitor, troubleshoot, and improve the performance of deployed models.
- Mentor junior data scientists and contribute to the continuous improvement of the data science practice within the company.

Requirements:
- 5+ years of experience in data science or machine learning roles, with a strong focus on supervised learning, reinforcement learning, and optimization techniques.
- Technical Skills:
- Proficiency in Python.
- Strong understanding of working with relational databases and SQL.
- Experience with machine learning libraries such as scikit-learn, TensorFlow, PyTorch, or similar.
- Deep understanding of statistical modeling and supervised learning algorithms (e.g., linear regression, logistic regression, decision trees, random forests, SVMs, gradient boosting, neural networks).
- Hands-on experience with reinforcement learning algorithms and frameworks like OpenAI Gym.
- Practical experience with optimization algorithms (linear, non-linear, combinatorial, etc.).
- Hands-on experience with data manipulation tools and libraries (e.g., pandas, NumPy).
- Familiarity with cloud services, specifically AWS, is a plus.
- Practical experience building and managing cloud-based ML pipelines using AWS services (e.g. SageMaker, Bedrock) is a plus.
- Education:
- Bachelor's or Master's degree in Computer Science, Statistics, Mathematics, Engineering, or a related field. A PhD is a plus.

Other Skills:
- Strong analytical and problem-solving skills.
- Excellent communication skills, with the ability to clearly articulate complex concepts to diverse audiences.
- Ability to work in a fast-paced environment and manage multiple priorities.
- Strong organizational skills and attention to detail.
- Ability to mentor and guide junior data scientists.
- Must be able to communicate with U.S.-based teams

The company offers:
- An opportunity to be at the forefront of advertising technology, impacting major marketing decisions.
- A collaborative, innovative environment where your contributions make a difference.
- The chance to work with a passionate team of data scientists, engineers, product managers, and designers.
- A culture that values learning, growth, and the pursuit of excellence.

Data Science UA is a service company with deep expertise in AI and Data Science. Our story started in 2016 with the first Data Science UA Conference in Kyiv, and since then, we’ve built one of the largest 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 seeking an experienced Data Scientist with a passion for large language models (LLMs) and cutting-edge AI research. In this role, you will design and prototype data preparation pipelines, collaborating closely with data engineers to transform your prototypes into scalable production pipelines, design and implement a state-of-the-art evaluation and benchmarking framework to measure and guide model quality, and do end-to-end LLMs training. You will work alongside top AI researchers and engineers, ensuring our models are not only powerful but also aligned with user needs, cultural context, and ethical standards.

Responsibilities:
- Curation of datasets for pre-training, supervised fine-tuning, and alignment
- Research and develop best practices and novel techniques in LLM training and evaluation pipelines.
- Collaborate closely with data engineers, annotators, linguists, and domain experts to scale data processes, define evaluation tasks and collect high-quality feedback.

Requirements:
Education & Experience:
- 3+ years of experience in Data Science or Machine Learning, preferably with a focus on NLP.
- An advanced degree (Master’s or PhD) in Computer Science, Computational Linguistics, Machine Learning, or a related field is highly preferred.
GenAI & NLP Expertise:
- Practical experience with fine-tuning LLMs / VLMs models
- Hands-on experience with modern NLP approaches, including embedding models, semantic search, text classification, sequence tagging (NER), transformers/LLMs, RAGs.
ML & Programming Skills:
- Strong experience with deep learning frameworks such as PyTorch or JAX for building models.
- Ability to write efficient, clean code and debug complex model issues.

Nice-to-have:
Advanced NLP/ML Techniques:
- Applied experience using Reinforcement Learning in NLP / LLM settings
- Prior work on LLM safety, fairness, and bias mitigation.
- Experience generating and curating synthetic datasets for Supervised Fine-Tuning (SFT), including quality control and scaling considerations.
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) indicates a passion for staying at the forefront of the field.
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.
- Experience with cloud platforms (AWS, GCP, or Azure) and big data technologies (Spark, Hadoop, Ray, Dask) for scaling data processing or model training is a plus.
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

The company offers:
- Office or remote — it’s up to you. You can work from anywhere, and we will arrange your workplace
- Remote onboarding
- We train employees with the opportunity to learn through the company’s library, internal resources, and programs from partners
- Health and life insurance
- Wellbeing program and corporate psychologist
- Reimbursement of expenses for Kyivstar mobile communication

Data Science UA is a service company with deep expertise in AI and Data Science. Our story started in 2016 with the first Data Science UA Conference in Kyiv, and since then, we’ve built one of the largest AI communities in Europe.

About the role:
We are looking for a hands-on Sr. Machine Learning / Computer Vision Engineer with strong practical experience in designing, training, evaluating, and improving vision systems for real-world applications. The ideal candidate combines solid theoretical ML/CV fundamentals with an engineering mindset and is comfortable taking ownership of the full pipeline, from data preparation and experimentation to model optimization and deployment.

Responsibilities:
- Design, train, evaluate, and improve machine learning and computer vision models for real-world production use cases
- Build and maintain end-to-end ML pipelines, including data collection support, preprocessing, feature engineering, training, validation, and inference
- Develop solutions across both computer vision and machine learning tasks depending on business needs
- Perform error analysis, diagnose model weaknesses, and drive improvements in accuracy, robustness, and reliability
- Select and justify appropriate methods and model architectures based on dataset characteristics, product constraints, and deployment requirements
- Work with challenging real-world data, including noisy, limited, imbalanced, or weakly labeled datasets
- Collaborate with engineering and product teams to translate business problems into practical ML solutions
- Contribute to production-ready development with a focus on maintainability, reproducibility, and performance

Requirements:
- 3–5+ years of professional experience in Machine Learning / Computer Vision
- Strong senior-level practical expertise in computer vision, machine learning, and applied model development
- Hands-on experience with tasks such as object detection, image classification, anomaly detection, feature-based approaches, or similar
- Solid understanding of classical ML methods, including tree-based models, linear models, feature engineering, model selection, and evaluation
- Strong Python skills and practical experience with PyTorch, OpenCV, and common ML tooling
- Experience building full ML workflows including data preparation, augmentation, preprocessing, training, validation, testing, and deployment handoff
- Strong understanding of model evaluation, debugging, overfitting, generalization, optimization, and experiment-driven improvement
- Ability to write clean, modular, maintainable code and independently own technical solutions
- Strong analytical thinking, engineering maturity, and problem-solving skills

Nice to Have:
- Experience in adjacent ML domains such as time-series, audio, or NLP
- Experience with embedding-based methods, metric learning, retrieval systems, or memory-bank approaches
- Practical experience with model optimization techniques such as quantization, pruning, distillation, or related efficiency-focused approaches
- Experience working with real-world industrial datasets and ambiguous problem formulations
- Knowledge of software engineering best practices, reproducible experimentation, and pipeline design

We offer:
- Free English classes with a native speaker and external courses compensation;
- PE support by professional accountants;
- Medical insurance;
- Team-building events, conferences, meetups, and other activities;
- There are many other benefits you’ll find out at the interview.