Jobs at Djinni

About the client

Global publicly traded company that delivers unparalleled cloud-based AI infrastructure, featuring cutting-edge NVIDIA GPUs that combine exceptional reliability, security, performance, and value. Our client is building a world-class experience for developers and data scientists across enterprise and AI-native organizations-empowering professionals to focus exclusively on training, fine-tuning, and inference of their AI models, while we manage the nuts and bolts of our premium infrastructure.
 

Company and Position Description

Our client is hiring a Mid-Level Site Reliability Engineer with 3-5 years of experience to support the development and operation of our AI-focused cloud platform. You will work across automation, infrastructure-as-code, Kubernetes, and private cloud environments, while helping ensure high reliability and performance. Strong written communication is essential, as you will interact with distributed engineering teams and occasionally with clients.

This role requires 3-4 hours of overlap with US Eastern Time and participation in a rotating on-call schedule (1 week every 6 weeks).
 

What You’ll Do

• Support infrastructure-as-code workflows using Terraform and Ansible
• Assist in building and operating Kubernetes clusters
• Troubleshoot system, network, and infrastructure issues
• Contribute to automation, monitoring, and CI/CD pipeline enhancements
• Work with private cloud environments (OpenStack strongly preferred)
• Produce clear, professional internal and client-facing written communication
• Participate in the on-call rotation and help improve incident response
   

What We’re Looking For

• 3-5 years of experience in SRE, DevOps, Systems Engineering, or similar roles
• Hands-on experience with Terraform, Ansible, and Kubernetes
• Solid troubleshooting skills across Linux and networks
• Familiarity with OpenStack or other private cloud technologies (non-commercial experience welcome)
• Strong written English and professional communication skills
• Ability to maintain required overlap with US Eastern Time
• Willingness to participate in on-call rotation (1 week every 6 weeks)
   

What We Offer

• Competitive salary
• A chance to help define a new category of AI infrastructure
• Greenfield architecture - build the product you’ve always wanted to use
• High trust and autonomy, with deep impact on platform direction
• Remote-first culture with the option to collaborate in person as we scale
• Small, highly skilled team and zero bureaucracy

We are looking for a passionate Software Engineer to develop, innovate, and support Keylabs.AI, a data labeling platform. This role is critical to our mission and offers the opportunity to make a significant contribution to the AI ​​industry.

Qualifications

Education:
Bachelor's or Master's degree in Computer Science.
Experience

At least 5 years of full-time experience in software development.
Experience in team leadership roles would be an advantage.
Required: At least 2 years of experience in client-side web development using JavaScript, HTML, and CSS.
At least 2 years of proven experience with MongoDB and SQL databases, including writing complex SQL queries involving JOIN operations.
Hands-on experience with production systems and high-availability architectures.
Experience with automation, infrastructure as code, and GitOps.
Experience with Python-based machine learning tools such as PyTorch, Pandas, NumPy, etc.

Technical Skills:

Deep understanding of design patterns and ability to effectively apply them in various scenarios.
Knowledge of C or C++ is required.
Excellent Python proficiency with at least 3 years of hands-on experience.
Familiarity with C# and/or Java.
Excellent Node.js / JavaScript proficiency.
Deep knowledge of modern web frameworks (React, Angular, Vue, Django, Flask or similar).
Experience and knowledge of Docker and cloud platforms (AWS / GCP / Azure).

Requirements: 

Knowledge of Linux, Linux tools, network technologies and system security (main daily working platform is Linux).
Knowledge related to training and using machine learning models.
Ability to analyze and solve complex algorithmic problems.
Ability to interpret and understand complex technical specifications.

Working Schedule

• Willingness to occasionally work non-standard hours to support critical releases, incidents, or customer needs.

English Language

• Advanced level of English proficiency (C1).
  
   

OUR COMPANY  

HBM is a European company building exciting new products from scratch for startups and helping mature companies in their journey towards data-driven innovation and AI based solutions. Our expertise refers to EnergyTech, FinTech, ClimateTech, EdTech, PropTech, etc. 

Founded in Ukraine and developed based on Scandinavian culture, HBM is hiring both in Ukraine and the EU for our customers located in Europe and USA.  

Our values include skills, passion, excellence, equality, openness, mutual respect, and trust. 

At HBM, you can become a part of growing company, work with creative colleagues, and enjoy modern technologies and creating AI-based solutions. You’ll be part of a strong corporate culture combined with the agility and flexibility of a start-up backed by proven outsourcing and development practices, a human-oriented leadership team, an entrepreneurial mindset, and an approach to work-life balance. 

PROJECT 

Our customer provides tourist services in Iceland through several brand websites, all integrated with a CMS and booking systems. They are now rolling out a new web strategy to unify the technology stack across all channels, migrate to modern solutions, and retire legacy components. The new platform will be built with Next.js, TypeScript, Vercel, Sanity CMS, Algolia, and Sokoni as the primary booking system. 

We’re looking for a Senior Fullstack Developer with strong Next.js/TypeScript experience to work closely with the customer on delivering this strategy. 

You’ll be joining an ambitious, technically challenging project built on a modern stack - ideal for someone who thrives in a collaborative environment and wants to help shape a product from day one. 

WE PROVIDE YOU WITH THE FOLLOWING EXCITING CHALLENGES 

• Participate in end-to-end product development: from design and architecture to implementation and improvement 
• Collaborate with Technical Owner on Customer site to help define the technical vision and roadmap 
• Deliver high-quality code and documentation 
• Identify opportunities for process optimization and automation 
• Work closely with a distributed engineering team in an Agile environment 

WE EXPECT FROM YOU 

• Degree (bachelor or master) in computer science or a comparable course of study  
• 6+ years of software engineering experience using JavaScript/TypeScript  
• Experience with Next.js including API Routes, server components, server actions 
• Proficiency with TypeScript 
• Knowledge of Node.js and serverless architecture 
• Experience deploying on Vercel 
• Experience integrating APIs (REST/GraphQL) 
• Familiarity with CI/CD workflows 
• Familiarity with containerization tools, especially Docker  
• Understanding of caching strategies 
• Understanding of authentication & security best practices 
• High standards for code quality, performance, security, and user experience   
• Excellent communication skills, with the ability to clearly articulate ideas to both technical and non-technical stakeholders 
• English proficiency at an upper-intermediate level 

WOULD BE A PLUS 

• Building and optimizing integrations with Sanity CMS 
• Experience with Algolia (indexing, search queries, filtering) 

WE OFFER YOU 

• Modern technologies, new products development, different business domains. 
• Start-up agility combined with mature delivery practices and management team. 
• Strong focus on your technical and personal growth. 
• Transparent career development and individual development plan. 
• Flexible working mode (remote/work from office), full remote possibility. 
• Competitive compensation and social package 
• Private Entrepreneurs support 
• Focus on the well-being and human touch. 
• Flat organization where everyone is heard and is invited to contribute. 
• Work-life balance approach to work. 
• Passion and Fun in everything we do. 

Requirements

• 2+ years of experience with React.js and TypeScript
• Strong understanding of HTML5, CSS3, and modern styling techniques
• Experience with TailwindCSS or TSS-react
• Comfortable working with RESTful APIs
• Deep understanding of component architecture, state management
• Experience integrating with REST APIs and handling async data
• Ability to read, understand, and improve existing code
• English level at Upper-Intermediate level or higher
• Design background (education or past work)
• Experience working in Figma (you can update/add missing design or state if needed)
• Understanding of UI/UX principles
• Ability to read and implement designs correctly
• Experience with components, grids and layouts
• Attention to details (spacing, typography, alignment)Nice to Have
• Experience with Next.js and App Router
• Familiarity with shadcn/ui or other modern headless UI libraries
• Experience integrating or working with CMS platforms like Prismic or Strapi
   

We offer:

• 21 vacation days, 8 sick leave days, 7 additional days off if needed, and a day off on your birthday
• Medical insurance or  compensation for sports expenses
• 50% compensation for education expenses—lectures, conferences, and English courses
• An amazing and friendly team. Check out our Instagram and DOU
• A comfortable office close to the city center
• Flexible work schedule
• No bureaucracy or micromanagement—we follow a Scandinavian management model

We are looking for a Talent Acquisition Lead to strengthen our recruiting team for ensuring the development and training of the recruitment team to support their efficiency and compliance with modern recruitment standards.

Explore opportunities at JustMarkets and become a part of our team of professionals!

Responsibilities

• Leading recruiting unit and ensuring high quality of hire
• Management, mentoring and coaching of the recruitment team
• Effectively leading end-to-end recruitment process (pipeline, recruitment flow effectiveness etc)
• Ensure quality recruitment activities and deliverables are in line with recruitment KPIs
• Proactively identify opportunities for improvements in the Talent acquisition area
• Keep track of recruitment metrics and analytics
• Build and maintain strong relationships with candidates, hiring managers, and external partners within the Fintech industry to ensure a positive recruitment experience

Requirements

• 5 years in successfully handling end-to-end recruitment
• 2 years in managing recruitment team in a fast-paced environment
• In-depth experience in successfully sourcing and hiring quality candidates in Data Direction (Data Analyst, Data Engineer etc.)
• Being a ‘hands-on’ and goal-oriented person
• Strong project management, organizational and multitasking skills
• Client-orientation, highly responsive and customers oriented (service focused)
• Self-starter and highly motivated
• Ability to deal with ambiguity and changing priorities
• Critical thinker, problem-solver who focuses on continuous improvement
• English — Upper-Intermediate and higher

We offer

• Compensation for tax expenses of private entrepreneurs in Ukraine
• Qualified assistance and support for Ukrainian private entrepreneurs
• 20 paid vacation days per year
• 10 paid sick leave days per year
• Public holidays according to current Ukrainian legislation
• Medical insurance for employees
• Compensation for professional education and learning English
• Compensation for a sports subscription or sports equipment

Due to the launch of a new project, we are looking for a  Junior Automation QA Engineer (JS) to join our technical team and ensure stable product quality.

Responsibilities:

• Develop and maintain automated tests to ensure product stability;
• Create and execute test cases, covering critical areas with API/UI automation;
• Support and enhance the existing test automation framework based on new requirements;

• Work closely with developers and manual QA engineers to improve product quality.

   

Required Skills:

• 0,5 + years of experience with JavaScript/TypeScript and Playwright in test automation;
• Understanding of QA methodologies, tools, and processes;
• Basic programming skills and familiarity with OOP principles;
• Knowledge of JavaScript and experience in test automation;
• Hands-on experience with at least one test automation framework: Cypress, WebdriverIO, or Playwright;
• English (Intermediate level, written and spoken);

• Self-motivated, proactive, and result-oriented mindset.

   

Nice to Have:

• Experience with Linux, Docker;
• Knowledge of CI/CD processes;
• Experience working with SQL;

• Ability to integrate API calls with UI tests.

   

What We Offer:

• Work with experienced colleagues who are ready to share their knowledge;
• Opportunities for professional development and career growth;
• Involvement in various projects covering different areas of software development;
• Free English courses and daily language practice with colleagues;
• Paid vacation and sick leave.

ELVTR is a premier online education platform offering live courses taught by top executives from globally renowned companies. We are dedicated to transforming the online education industry by providing elite-level education and innovative course offerings.

As we continue to grow, we are seeking a Python Developer to support our internal IT team with the maintenance, troubleshooting, small enhancements, and integrations of existing systems. This role is ideal for a detail-oriented person who enjoys clear, defined tasks and working on optimizations.

This is a part-time remote position with an expected commitment of ~40 hours per month. 

Key responsibilities

• Maintain and troubleshoot existing internal Python-based tools and integrations.
• Optimize and refine existing code for better performance and maintainability.
• Implement minor feature enhancements and integrations between internal systems and tools.
• Automate basic workflows and eliminate manual processes.

• Support and maintain the stability and performance of backend services.

   

Initial Tasks

• Refactor the current system to ensure that the course entity is managed separately from the certificate generation logic.
• Review and analyze the core service logic for meeting bookings to identify why the available slots are showing inconsistencies across three different locations.
• Create an automation process that updates the price entity in the backend whenever there is a price change in Google Sheets, and ensure the updated price is automatically reflected in all deals within the CRM system.
• Develop an automation or script that triggers when a user unsubscribes from emails, sending this data to Klaviyo (third-party service) for tracking and management.
• Enhance the booking system to display possible meeting slots for users, even when no free slots are available, ensuring users can still see available timeslots for booking.

Requirements

• 3+ years of experience in Python development, especially in scripting and automation tasks.
• Familiarity with relational and document-oriented databases (PostgreSQL, MySQL, MongoDB).
• Comfortable working with APIs and integrating third-party tools.
• Basic understanding of code optimization and best practices.
• Ability to troubleshoot and debug efficiently.
• Self-directed, organized, and able to handle multiple small tasks effectively.

Nice-to-Haves:

• Experience with message brokers (e.g., RabbitMQ, Kafka).

• Familiarity with backend service maintenance.

   

Benefits

• Competitive Salary and Benefits: We value your dedication and expertise, offering a competitive salary, and a range of company perks and benefits that reflect our commitment to excellence.
• Collaborative Work Environment: Join a team of passionate, like-minded individuals. At ELVTR, collaboration isn't just a buzzword; it's how we grow, innovate, and excel together.

Why You Should Join ELVTR

• Innovative and Positive Culture: Join a team of passionate individuals who are driven by a common vision.
• Growth Opportunities: At ELVTR, we not only believe in nurturing talent but also in providing abundant opportunities for professional development. In fact, 100% of our senior managers have been promoted to executive roles from within the company.
• A Mission You Can Be Proud of: Be part of a brand that stands for quality, innovation, and inspiring education. Be part of a company that’s changing the face of online education, connecting students with top-tier executives.

If you are a detail-oriented professional ready to contribute to a leading online education platform, we encourage you to apply. Elevate your career with ELVTR.

ELVTR is committed to providing equal opportunities and fostering a diverse, inclusive environment for all, whether you join us as an employee or a contractor.

We’re looking for a QA Lead to define testing strategy, lead QA across projects, mentor engineers, and ensure top product quality through strong processes, collaboration, and hands-on testing.
 

About Elevated Living Product:

Elevated Living has been improving the resident experience for over seven years. We created a single, all-in-one platform that makes it easy for property managers and resident staff to work together. Our goal is simple: to provide the best experience for residents by replacing multiple, confusing apps with one easy solution.

This is a stable, long-term project that continues to grow, and you'll have the chance to be part of its ongoing success.

Our primary technology stack revolves around JavaScript. We use React for the front-end, Node.js for the back-end, and React Native for mobile development.

About the role:

We’re looking for a QA Lead who will take full ownership of our quality assurance processes across multiple projects. In this role, you’ll define testing strategies, set quality standards, and lead the planning and execution of all QA activities. You’ll work hands-on with test management tools, oversee both manual and automated testing efforts, and analyze results to drive product quality. This is a leadership position that requires strong communication, the ability to mentor QA engineers, and the confidence to collaborate closely with Product, Engineering, and Delivery teams in a fast-paced Agile environment.

Requirements:

• 4–5+ years of experience in QA (manual or manual + automation).
• Strong understanding of different test types and test runs, including Regression, Stress, Load, and Smoke Testing.
• Proven experience in planning, organizing, and leading QA activities across multiple projects.
• Ability to define QA processes, testing strategies, and quality standards for the team.
• Hands-on experience with test management tools (e.g., Qase, TestRail, Testmo, or similar).
• Solid knowledge of SDLC, especially within Agile/Scrum environments.
• Experience with both manual and automated testing approaches.
• Ability to analyze test results, identify root causes, and drive defect resolution.
• Strong understanding of performance, security, and usability testing principles.
• Experience using bug tracking systems such as Jira.
• Leadership skills with the ability to mentor, guide, and review QA engineers.
• Strong communication skills for effective collaboration with Product, Engineering, and Delivery teams.
• Ability to estimate QA efforts, manage priorities, and deliver under deadlines.

• English — upper-intermediate or higher.

   

  Recruitment process: intro (HR) -> technical -> final with PM
   

About Project:

An application that brings AI into highly specialized professional fields, enabling them to benefit from the latest cutting-edge advancements.

We are currently looking for a talented Python developer for our team.

Requirements:

• Over 2 years of experience and strong knowledge of Python 3.9+, including multiprocessing and asyncio.
• Hands-on experience with FastAPI and Pydantic for building web services.
• Solid understanding of SQLAlchemy and ORM concepts.
• Proficiency in Pandas for data analysis.
• Basic knowledge of NumPy and understanding of the vectorization concept.
• Experience with data visualization using matplotlib and plotly.
• Good understanding of data structures.
• Knowledge of relational databases and SQL.
• Experience working with PostgreSQL.
• Understanding of web services architecture and integration standards.
• Experience in developing and documenting REST APIs, including Swagger.

• English — Intermediate level;

   

Will be plus:

• Understanding of prompting / interaction concepts with LLMs like ChatGPT, LLama, etc.
• More advanced understanding of Numpy and how math translates into code.
• Knowledge of “Fast App Builders” like Streamlit or Jupyter.

Key Responsibilities:

• Design separate components, modules, classes etc.
• Code, debug, document, and maintain portions of software.
• Participate in peer code and design reviews.
• Participate in estimation and planning sessions.
• Contribute to development of technical project documentation and user documentation.
• Provide assistance to test engineers and support personnel in solving technical issues of software installation and its operation.
• Participate in conference calls and face-to-face meetings.
• Spot current deficiencies in the development process, adopted procedures and engineering practices, environment configurations, etc., and suggest improvements.
• Escalate technical issues to the Architect, Team Lead and Project Manager.

Location:

Ukraine: remote.

We offer:

• The ability to focus on your work: a lack of bureaucracy and micromanagement;
• Competitive compensation depending on skills and experience level;
• Ability to learn new technological stacks, which help you to grow professionally and advance your career;
• Friendly atmosphere, concern for the comfort of specialists;
• English lessons;
• Flexible schedule depends on project’s needs;
• 15 working days of vacation;
• 12 working days per year are allowed to be “no show days” due to personal reasons.

At EXMO, we believe finance should be simple. Since 2014, we’ve been building a global fintech platform that makes buying, selling and holding crypto effortless for millions of users.
We are now looking for an experienced Go Engineer with strong production operations skills to help us improve the reliability and scalability of our critical systems.

What you will work on

• Building and maintaining high-load backend services written in Go.
• Ensuring stable operation of production systems: monitoring, alerting, incident response, root-cause analysis.
• Managing deployments, rollbacks, CI/CD pipelines, configuration updates.
• Working with logs, metrics and tracing tools to diagnose performance issues and prevent incidents.
• Improving observability, reliability and resilience across services.
• Collaborating with product, security and infrastructure teams to deliver safe and predictable updates in our fintech environment.

We’re looking for someone who

• Has 3+ years of hands-on Go experience in commercial products.
• Has real production / SRE experience: incidents, on-call, debugging live systems, optimizing performance.
• Understands how high-load fintech or payment-related systems behave under real traffic.
• Is confident with Linux, Docker, Git, CI/CD, metrics/logging/monitoring tools.
• Communicates clearly, takes ownership and works well with cross-functional teams.
• Has English at an intermediate level or higher.

Will be a plus

• Experience with wallets, financial APIs, or crypto-related products.
• Familiarity with modern protocols and distributed systems.

Perks of being a part of EXMO 🙌
Crypto teaches flexibility — so we focus on real, practical benefits instead of clichés.

• Competitive salary
• Flexibility to work fully remote or from a comfortable coworking — your choice
• Reimbursement for English lessons and sports activities
• 100% sick leave coverage
• 30-day unified leave balance per year
• A friendly team that is genuinely happy to welcome a new teammate😉

We're looking for an enthusiastic Trainee / Junior DevOps Engineer to join our small team as a trainee/apprentice. You'll work directly under the guidance of our Senior DevOps Engineer, learning hands-on while contributing to real projects. This is an excellent opportunity for someone early in their DevOps career who wants to grow their skills in cloud infrastructure, automation, and scalable architecture.

What will you be doing?

• Assisting in building and maintaining  infrastructure on Google Cloud Platform (GCP) and Amazon Web Services (AWS)
• Supporting the implementation of CI/CD pipelines for automated deployments
• Helping monitor system health and performance under supervision
• Learning infrastructure-as-code practices using tools like Terraform, Pulumi and Ansible
• Collaborating with developers to support our tech stack (Node.js and Python)
• Documenting processes and contribute to internal knowledge bases

Skills we are looking for:

• Basic understanding of Linux systems and command-line operations
• Familiarity with at least one scripting language (Bash, Python preferred)
• Basic knowledge of version control (Git)
• Understanding of fundamental networking concepts
• Eagerness to learn and grow in DevOps practices
• Strong communication skills and ability to work collaboratively
• Fluency in English

Nice to haves:

• Some exposure to cloud platforms (GCP, AWS, or Azure)
• Basic familiarity with containerization (Docker)
• Understanding of CI/CD concepts
• Any experience with infrastructure automation tools (Terraform, Ansible)
• Personal projects or contributions to open-source projects
   

If you're passionate about technology, eager to learn DevOps practices, and want to grow your career with mentorship and real-world experience, we'd love to hear from you! 🎉

Ready to start your DevOps journey? Apply now!
 

Responsibilities:
- Plan, launch, optimize, and scale advertising campaigns.
- Maintain accurate reporting and performance tracking for all managed accounts
- Monitor industry trends and algorithm updates, ensuring quick adaptation and implementation of new campaign strategies
- Creating Technical Tasks for the development team to build websites.
- Conduct market research and competitor analysis to identify new opportunities, topics for white pages, and potential GEOs for launch
- Testing new approaches to campaign launches: GEOs, keywords, and optimization strategies.

Requirements:

- Minimum of 2 years of experience as a PPC Manager with experience in Forex industry
- Proven record of active campaign launches with successful cases in the last 6 months (ROI 40%+)
- Hands-on experience with various campaign types (Search, Performance Max, Demand Gen)
- Practical experience managing large advertising budgets
- Knowledge of working with anti-detect browsers, trackers, spy services

- Responsibility
- Attention to detail
- Ability to generate new ideas and approaches
- Proactiveness

Will be a plus:

- Experience in launching advertising campaigns in the iGaming, Betting, Nutra verticals
- Experience scaling campaigns across multiple GEOs and markets
- Strong analytical skills and ability to analyze campaign results for further optimization
- Knowledge of the certification process for various geos (certifications for Online Gambling, Social Online Casino, Lotto, etc.)

Working terms

• possibility of remote work;
• paid vacation — 21 working days;
• annual salary review;
• opportunity for career growth within the company.

About Traffic Label:
Traffic Label is a multi-channel media agency with almost two decades of experience. We specialise in performance marketing, affiliate operations, and full-funnel digital strategies that connect brands with the right audience and deliver real results. We work with international partners and create digital solutions that drive engagement and growth.

About the Role:
We’re looking for a Middle Graphic Designer to join our design team and work across both existing products and new launches.
You’ll help develop brand identities, create visual styles, and design logos for upcoming and current projects. The role also includes crafting unique email templates, marketing materials, and a wide range of creatives that support different product directions - from interfaces to marketing assets and beyond.
We’re looking for someone who isn’t afraid of new challenges and eager to learn - at times tasks may require non-standard solutions, experimenting with AI tools, or quickly picking up new skills. It’s a great opportunity for a designer who enjoys variety, building strong visuals, and contributing to products from early concept to final design.

.    Main Responsibilities:

• Develop brand identities and visual styles for new products
• Create logos and key visual elements for internal projects
• Design unique email templates for various campaigns
• Produce marketing materials (banners, printed assets, promo visuals)
• Create social media creatives across different platforms
• Design UI-related visuals and assets for product interfaces
• Collaborate with the design team on daily tasks and shared projects
  
  Requirements:
• 2+ year of experience in design
• Strong skills in Figma, Adobe Illustrator, and Photoshop
• Good understanding of branding, typography, and composition
• Comfortable working in English (Intermediate+ level)
• Excellent time management and attention to detail
• Location: Lviv (hybrid), Ukraine (remote format)
  
  Nice to Have:
• Experience with email builders (Doddigital, SendGrid, Adestra, Klaviyo, or similar)
• Experience using AI tools for design or creative optimisation
  
  We Offer:
• Competitive salary
• 21 days of paid vacation
• Hybrid/ office work model in Lviv
• Bonuses and team benefits
• Friendly and supportive work environment

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.

What you will do

• 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.
• Form specific SFT/RLHF datasets from existing data, including data augmentation/labeling with LLM as teacher.
• Develop heuristics, filtering rules, adversarial examples, and synthetic data generation methods to maximize model robustness and data effectiveness.
• Research and develop best practices and novel techniques in LLM training pipelines.
• Develop metrics, tools and processes for continuous evaluation during model pre-training, fine-tuning, and deployment.
• Analyze benchmarking datasets, define gaps and design, implement, and maintain comprehensive benchmarking framework for Ukrainian language.
• Monitor and analyze the impact of data quality and benchmark results on model performance, identifying strengths, weaknesses, and improvement opportunities.
• Collaborate closely with data engineers, annotators, linguists, and domain experts to scale data processes, define evaluation tasks and collect high-quality feedback.
• Document methodologies, experimental findings, and best practices, and share insights across internal teams to ensure alignment of training and evaluation workflows.

Qualifications and experience needed

Education & Experience:

• 3+ years of experience in Data Science or Machine Learning, preferably with a focus on NLP.
• Proven experience in end-to-end ML, NLP model development, including data preparation and evaluation.
• An 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 is a plus.

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.
• Ability to rapidly prototype and iterate on ideas

A plus would be

Advanced NLP/ML Techniques:

• Solid understanding of RLHF concepts and related techniques (preference modeling, reward modeling, reinforcement learning).
• Prior work on LLM safety, fairness, and bias mitigation.
• Ability to rapidly prototype and iterate on ideas
• 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) indicates 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 our project’s focus.
• Knowledge of Ukrainian benchmarks, or familiarity with other evaluation datasets and leaderboards for large models, can be an advantage given our 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.

What we offer

• Office or remote — it’s up to you. You can work from anywhere, and we will arrange your workplace
• Remote onboarding
• Performance bonuses
• 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

Ixilix is a technology-driven company that builds high-quality solutions and long-term partnerships. Our team is growing, and we are looking for a Frontend Team Lead.

Project: instant games.

Responsibilities:

• Lead and mentor a team of 3–4 Frontend Developers.
• Plan and delegate sprint tasks, manage priorities, and monitor progress.
• Define and maintain frontend architecture, technical documentation, and best practices.
• Conduct regular 1:1 meetings, provide feedback, and support professional growth of team members.
• Ensure timely and high-quality delivery of features and game releases.
• Participate in hiring, onboarding, and evaluating new developers.
• Collaborate with Producers, Artists, and QA teams to align on game vision and milestones.
• Integrate and support browser games based on the PIXI.js library.
• Develop new games from scratch (with commercial experience).
• Creating a game engine from scratch (with commercial experience).
• Develop and optimize high-performance applications using PIXI.js.
• Compose clean, efficient, and dependable code.
• Conduct code reviews and ensure compliance with coding standards.

• Optimize game performance by identifying and eliminating bottlenecks.

   

Required Skills:

• 1+ year of experience as a Team Lead Front-End developer.
• 6+ years of experience as a Front-End developer, including slots development.
• Proficiency with JavaScript (Advanced Level), Typescript.
• Strong experience with PIXI.js.
• Experience with StateMachine.
• Strong development experience (GSAP, Spine, etc).
• Solid understanding of OOP, SOLID principles, DI (Dependency Injection), client-side architecture, and design patterns.
• Strong experience with WebSockets, socket.io, etc.
• Experience with game optimization.
• Familiarity with GIT rebasing schema and submodules

• English B1+

   

Preferred Skills:

• Experience with library React 18 version.
• Strong experience with States systems (like Redux, MobX, etc).
• Knowledge of Node.js.
• Familiarity with RxJS.
• Experience with PostMessage and WebWorkers.

• Experience with HTML, CSS.

   

Competencies:

• Strong problem-solving skills, especially in critical situations.
• Leadership qualities and team collaboration.
• Analytical and communication skills.
• Initiative and proactive attitude towards improvement

What we offer:
Rewards & Celebrations:

• Quarterly Bonus System
• Team Buildings Compensations
• Memorable Days Financial Benefit

Learning & Development:

• Annual fixed budget for personal learning 
• English Language Courses Compensation

Time Off & Leave:

• Paid Annual Leave (Vacation) - 24 working days
• Sick leave - unlimited number of days, fully covered

Wellbeing Support:

• Mental Health Support (Therapy Compensation)
• Holiday Helper Service

Workplace Tools & Assistance:

• Laptop provided by Company (after probation)

Work conditions:

• Remote work from EU
• Flexible 8-hour workday, typically between 9:00 - 18:00 CET
• Five working days, Monday to Friday
• Public holidays observed according to Ukrainian legislation
• Business trips to Bratislava every 3-6 months (company provides compensation of expenses)

At Ixilix, we value transparency, trust, and ownership. We believe that great results come from people who care - about their work, their team, and the impact they create. 

Sounds like you? Let’s connect! We’re just one click away.