Jobs at Djinni

About Bookmap

Bookmap is a market-depth visualization and high-speed trading platform. You’ll help build the next-generation Bookmap Store - our web experience for discovering, purchasing, and managing add-ons and subscriptions.

Tech Stack You’ll Use

• React (Hooks) + Next.js 
• TypeScript, Tailwind CSS
• (Nice to have) Auth.js/NextAuth, TanStack Query/RTK, Jest/RTL/Playwright

• Backend: Java (Spring Boot) APIs
   

  What you’ll do

• Build responsive, accessible, high-quality UI in React/Next.js with TypeScript and Tailwind.
• Ship features for an e-commerce/marketplace: catalog, search/filtering, checkout/entitlements, account pages.
• Profile and optimize performance (rendering, network, bundle size; CSR/SSR/ISR trade-offs).
• Write clear, testable code; contribute to component abstractions and our design system.
• Collaborate cross-functionally (design, backend, product) and participate in code reviews and releases.
  
   

Required Skills & Experience

• 3+ years of professional web development.
• Strong in modern React with Hooks and component composition.
• Next.js and TypeScript in production.
• Tailwind CSS in production (utility-first workflows, sensible abstraction).
• Solid HTML/CSS fundamentals and web platform knowledge (forms, a11y, semantics).
• Performance literacy: you know what slows apps down, how to profile JS/React, and how to keep things fast.
• CS fundamentals (data structures, async patterns, immutability, basic algorithmic thinking).
• English: upper-intermediate (spoken & written).
• Ukrainian or Russian: conversational fluency. 
  
   

Nice to Have

• Experience building complex, fast UI backed by REST/GraphQL.
• State/data fetching tools (TanStack Query, Redux/RTK, Zustand).
• Testing: unit/integration/E2E (Jest, RTL, Playwright).
• Experience with Auth.js/NextAuth, role-based access, or IAM flows.
• Docker/docker-compose, basic CI familiarity.
• E-commerce/marketplace experience (payments, subscriptions, entitlements).
  
   

What We Offer

• Remote-first: work from anywhere.
• Paid annual and sick leave.
• Hardware/software budget.
• Sponsored training and professional growth.

A friendly, international team building something traders truly use.
 

Project info
We are an international software development company creating unique solutions to improve efficiency and optimize business workflows.
Our fun-packed crew of young and dynamic professionals will be by your side every step of the way. Show your best side and join us in building a recipe for success!

Main requirements:

• Passion for creating games
• Minimum 2 years of experience in game development (preferably in gambling)
• Professional experience with Adobe After Effects
• Proficiency in Adobe Photoshop
• Strong knowledge of Spine
• Attention to detail
• Experience working in an AGILE team
• Familiarity with Jira (ticketing, project management) and Confluence (documentation)
• Upper-Intermediate English proficiency (spoken and written).

Desirable skills:

• Knowledge and experience with Cinema 4D, Maya, Blender, Zbrush
• Drawing skills
• Experience with Adobe Illustrator
• Experience with Adobe Premiere Pro
• Familiarity with Texture Packer or similar packing software

Key responsibilities:

• Animate characters, environments, symbols, and FX in different styles
• Collaborate with developers to achieve the best possible results within the chosen technology
• Work with relevant teams on asset preparation
• Apply the right export and optimization techniques to ensure top performance

Hiring Process:

1. Introductory call with a recruiter
2. Test task
3. Internal technical interview
4. Client interview (if required)
5. Offer 🎉

What To Expect From Digicode?

🌎 Work from Anywhere: From an office, home, or travel continuously if that’s your thing. Everything we do is online. As long as you have the Internet and your travel nomad lifestyle doesn’t affect the work process (you meet all deadlines and are present at all the meetings), you’re all set.

💼 Professional Development: We offer great career development opportunities in a growing company, international work environment, paid language classes, conference and education budget, & internal 42 Community training.

🧘‍♂️ Work-life Balance: We provide employees with 18+ paid vacation days and paid sick leave, flexible schedule, medical insurance for employees and their children, monthly budget for things like a gym or pool membership.

🙌 Culture of Openness: We’re committed to fostering a community where everyone feels welcome, seen, and heard, with minimal bureaucracy, and a flat organization structure.

And, also, corporate gifts, corporate celebrations, free food & snacks, play & relax rooms for those who visit the office.

Did we catch your attention? We’d love to hear from you! 🚀

Quantum is a global technology partner delivering high-end software products that address real-world problems.

We advance emerging technologies for outside-the-box solutions. We focus on Machine Learning, Computer Vision, Deep Learning, GIS, MLOps, Blockchain, and more.

Here at Quantum, we are dedicated to creating state-of-art solutions that effectively address the pressing issues faced by businesses and the world. To date, our team of exceptional people has already helped many organizations globally attain technological leadership.

We constantly discover new ways to solve never-ending business challenges by adopting new technologies, even when there isn’t yet a best practice. If you share our passion for problem-solving and making an impact, join us and enjoy getting to know our wealth of experience!

About the position

Quantum is expanding the team and has brilliant opportunities for an Automation QA Engineer. The client is a technological research company that utilizes proprietary AI-based analysis and language models to provide comprehensive insights into global stocks in all languages. Our mission is to bridge the knowledge gap in the investment world and empower investors of all types to become “super-investors.”

Through our generative AI technology implemented into brokerage platforms and other financial institutions’ infrastructures, we offer instant fundamental analyses of global stocks alongside bespoke investment strategies, enabling informed investment decisions for millions of investors worldwide.

Must have skills:

• 2–3 years in automation testing for backend systems and APIs
• Python skills for writing test scripts and frameworks
• Hands-on experience with Jenkins or similar CI/CD tools
• Proficient with cloud platforms (AWS, GCP, or Azure)
• Skilled in testing REST APIs and asynchronous services
• Solid knowledge of QA methodologies, test design, and SDLC
• Experience testing data projects and data science pipelines
• At least an Upper-Intermediate level of English (spoken and written)

Would be a plus:

• Background in financial systems, investment platforms, or fintech is a plus
• Experience in automation testing of chatbot based applications
• Experience with Docker and Kubernetes

Your tasks will include:

• Develop and maintain automated test scripts and frameworks for backend systems and APIs, using Python
• Design and execute automated tests for REST APIs and asynchronous services to ensure system reliability and accuracy
• Perform performance and load testing to validate system behavior under high-load conditions
• Collaborate with DevOps teams to integrate automated tests within CI/CD pipelines using Jenkins or similar tools
• Test and validate cloud-based solutions across platforms such as AWS, GCP, or Azure
• Conduct end-to-end testing of data projects and data science pipelines, including verification of data quality, data transformations, and ML model outputs

We offer:

• Delivering high-end software projects that address real-world problems
• Surrounding experts who are ready to move forward professionally
• Professional growth plan and team leader support
• Taking ownership of R&D and socially significant projects
• Participation in worldwide tech conferences and competitions
• Taking part in regular educational activities
• Being a part of a multicultural company with a fun and lighthearted atmosphere
• Working from anywhere with flexible working hours
• Paid vacation and sick leave days

Join Quantum and take a step toward your data-driven future.

Job Type: Flexible schedule, handling both personal and business tasks.

We are looking for a proactive, communicative, and well-organized Personal Assistant to the CEO, who can handle various tasks effectively. This role requires someone resourceful, capable of taking initiative, and able to assist with both personal and professional tasks. This role includes both remote work and tasks that require your presence on-site. You should be prepared to visit local services and attend meetings in Portugal (Lisbon, Cascais) to handle various matters for the CEO.
 

Responsibilities:

• Personal and business task management: organizing creative birthday greetings for partners, finding and coordinating with local service providers.
• Communication with partners: engaging and interacting with various contacts to solve tasks efficiently.
• Calendar management: scheduling meetings, setting reminders, and keeping the CEO’s calendar up to date.
• Travel arrangements: booking flights, hotels, and handling travel logistics.
• Administrative support: assisting with minor company tasks, organizing notes, reminders, and general office support.
• Personal errands: handling personal requests from the CEO, including organizing household-related matters in Cascais.
• Occasional tasks: Be prepared to attend various appointments, meetings, and local services/companies in Portugal to handle tasks on behalf of the CEO.
   

Requirements:

• Strong communication skills: able to build connections and solve problems quickly.
• Organizational abilities: managing schedules, tasks, and priorities effectively.
• Fluent in English (required) and Portuguese knowledge is a plus.
• Tech-savvy: proficiency in organizational tools like Google Calendar, Trello, and MS Office.

Job Overview:

We are seeking a versatile Business Intelligence Analyst with Data Focus to bridge the gap between business needs and technical solutions. In this role, you will work closely with stakeholders to gather and define requirements, analyze business processes, and collaborate with developers to implement effective solutions. You will need strong communication skills, a good understanding of business operations, and the ability to work with technical teams to deliver projects efficiently.

Key Responsibilities:

• Gather, document, and analyze business requirements from stakeholders.
  
   
• Translate business needs into functional and technical specifications.
  
   
• Collaborate with developers, QA teams, and product managers to ensure successful implementation of solutions.
• Design, develop, and maintain dashboards and reports using BI tools (e.g., Power BI, Tableau, Looker, or similar).
• Develop automated reporting processes to streamline operations.
• Perform gap analysis between current and desired systems and processes.
  
   
• Support system design, development, testing, and deployment.
  
   
• Develop user stories, process flows, use cases, and data mapping documents.
  
   
• Assist in troubleshooting issues and providing post-implementation support.
  
   
• Conduct UAT (User Acceptance Testing) and ensure solutions meet business expectations.
  
   
• Facilitate workshops, meetings, and presentations with technical and non-technical stakeholders.
  
   

Qualifications:

• Bachelor’s degree in Business Administration, Computer Science, Information Systems, or a related field.
  
   
• Proven experience (3+ years) as a business analyst, preferably in both functional and technical roles.
  
   
• Strong understanding of SDLC methodologies (Agile, Scrum, or Waterfall).
  
   
• Ability to write functional specs, BRDs, and technical documentation.
  
   
• Familiarity with relational databases, SQL, and system integration concepts.
  
   
• Excellent communication, problem-solving, and stakeholder management skills.
• Proficiency in tools like JIRA, Confluence, Visio, or Lucidchart.
  
   
• Experience in data analysis or reporting is a must.

Preferred Skills:

• Experience with ERP or CRM systems (e.g., SAP, Oracle, Salesforce).
  
   
• Knowledge of APIs, web services, or system architecture.

We’re hiring a Laravel Developer who codes with urgency, quality, and ownership. This is a full-time role that requires full focus and dedication—if you’re looking for a second job or side gig, this is not the role for you.

Our product connects businesses with celebrities and influencers for various business engagements. We’re growing fast and rebuilding our legacy Symfony application in Laravel + Filament, transferring all existing data, and integrating AI-powered features that will help shape the future of the entertainment industry.

We’re looking for someone who not only writes clean, reliable code—but also works with urgency, takes ownership, and drives projects forward without waiting for instructions on every detail. If you spot a problem, you solve it. If you see a better way to build something, you speak up. This is a fast-paced, ambitious environment—we move quickly, and you’ll need to be comfortable with hard work and tight sprints to achieve big goals.

Start Date: ASAP

Key Responsibilities

• Rebuild our existing Symfony application in Laravel + Filament, ensuring all data is migrated accurately.
• Implement new features, including AI-powered functionality that improves user experience and operational efficiency.
• Collaborate with our internal team and outside development teams during the rebuild process.
• Maintain and improve existing Laravel code as we transition from Symfony.
• Fix bugs and deliver updates swiftly while maintaining high quality.
• Perform thorough testing of your work—there is no dedicated QA team, so attention to detail is critical.
• Make architectural decisions to improve scalability, performance, and maintainability.
• Set up and maintain automated testing, error reporting, and performance monitoring.
•  

Why You’ll Love This Role

• Direct Collaboration: Work closely with the CEO and team members in a flat, no-bureaucracy environment.
• Product Ownership: Go beyond coding—understand the user’s perspective and create features that are both practical and intuitive.
• Fast-Paced Environment: Ship features quickly and iterate without unnecessary perfectionism.
• Problem-Solving Culture: Your initiative and solutions will directly shape the product’s future.

• Autonomy & Trust: Manage your own tasks and make impactful decisions without micromanagement.

   

Requirements

• Laravel Expertise: Proven experience building and maintaining Laravel applications.
• Filament Experience: Strong understanding of Filament for admin panel and UI development.
• Symfony Knowledge: Ability to work with Symfony for migration purposes (experience with data migration between frameworks is a plus).
• Database Knowledge: Strong understanding of MySQL (or other RDBMS).
• Front-End Skills: Proficiency in HTML, CSS, and a JavaScript framework (Vue, React, or similar).
• Testing Skills: Ability to write automated tests (PHPUnit, Pest) and front-end tests when needed.
• Version Control: Comfortable working with Git for version control and collaboration.
• Communication: Strong written and spoken English for effective collaboration with a USA-based team.

• Availability: Able to overlap 4 hours within 9:00 AM – 6:00 PM EST.

   

Who We’re Looking For

• Product-Focused: You think like a product owner and make decisions with the user in mind.
• Fast & Efficient: You deliver quickly without sacrificing quality.
• Self-Starter: You take ownership and work independently without constant direction.
• Collaborator: You thrive in team environments and contribute ideas to improve the product.
• Clear Communicator: You can explain solutions, trade-offs, and technical decisions clearly.

What you’ll do

• Build core features end-to-end: Django/DRF services, clean APIs, solid data models, and reliable background jobs.
• Make it fast & reliable: profile hot paths, kill N+1s, tune Postgres queries/indexes, add caching/queues, and improve p95/p99.
• Raise quality: pragmatic tests (unit/contract), clear docs, feature flags, safe rollouts, and strong code reviews.
• Own operability: metrics/logging/tracing, SLOs/alerts, runbooks, and cost-aware decisions on AWS.
• Be AI-native: use AI assistants for prototyping, tests, refactors, docs, and research—augmenting (not replacing) engineering judgment.
• Collaborate well: work async, give/receive feedback, and ship iteratively with product/design.

Tech you’ll touch

• Core: Python 3.x, Django/DRF, PostgreSQL (Aurora), Redis, RabbitMQ, REST/webhooks.
• Platform: AWS (ECS Fargate), Terraform, GitHub Actions, Sentry, LaunchDarkly, Superset.
• Frontend touchpoints: React/TypeScript (nice to have).

What you bring

• 5–7 years building production backends with Python/Django.
• Strong performance engineering: profilers, EXPLAIN plans, connection pooling, caching strategies, async offload.
• Solid architecture: clear boundaries, backward-compatible changes, versioned contracts.
• Testing discipline (pytest, factories/fixtures, contract tests) and operability mindset (metrics/alerts).
• Security basics (PII handling, secrets, OWASP); fintech/SOC2/PCI awareness is a plus.
• Clear English communication and effective AI-assisted development habits.

Nice to have

• Experience with third-party APIs and a lightweight integrations framework (auth, retries, idempotency, webhooks).
• Fintech/payments/KYC/KYB exposure.

How we work

• Remote-first across Eastern Europe with reasonable overlap to Pacific Time.
• Product-driven, metrics-led delivery; ship with flags, measure, iterate.

Hiring process

Intro chat → Technical deep-dive (system design + Django perf) → Practical pairing or small take-home → Team interview → Offer.

Ready to join TrustPoint?

Send your CV and links (GitHub/LinkedIn) plus a short note on (1) a Django performance win you delivered and (2) how you use AI day-to-day as an engineer.

Atlaslive is a dynamic iGaming platform that provides the best quality software solutions for iGaming business. We create a live connection between business ambitions and opportunities. Atlaslive is recognized worldwide as one of the leading Sportsbook Platforms, as well as the Best Sports Betting Provider and a Rising Star in Sports Betting Technology within the CEE, Baltic and Nordic markets. Atlaslive, the tech behind the game.

Now we’re looking for a Commercial Director who will lead sales and marketing, build strong client relationships, and drive revenue growth to keep us ahead in a competitive market.
 

Key Responsibilities:

• Build and execute commercial strategy to grow revenue and market share.
• Lead and mentor sales team to hit ambitious targets.
• Identify new markets, partnerships, and business opportunities.
• Negotiate deals with key clients and secure long-term contracts.
• Oversee marketing campaigns aligned with sales goals in cooperation with CMO.
• Manage budgets, track performance, and ensure high ROI.
• Report on results to CEO/COO and adjust plans as needed.

Requirements:

• 5+ years in commercial leadership, sales, or business development (iGaming/SaaS a big plus).
• Proven track record of driving revenue growth and leading teams.
• Strong negotiation, communication, and leadership skills.
• Strategic mindset with solid financial acumen.
• Fluent English (C1+).
• Market expertise in LATAM with practical knowledge of cultural, legal and operational aspects.
• Knowledge of Spanish and/or Portuguese will be an advantage.

Career Growth & Opportunities:

• Become part of a global leader in iGaming innovation.
• Access to professional development programs and industry events.
• Opportunity to work with top-tier experts in cutting-edge technology.
• Drive real impact in a fast-growing international market.
• Flexible career progression within a scalable and adaptable platform

Working Conditions:

• Vacation: 22 working days per year.
• Sick leave: 5 paid days per year.
• Sick lists: 100% paid with medical certificate up to 10 days per year

• Benefit cafeteria personal limit for health support

   

Join our passionate and talented team and be at the forefront of transforming the iGaming industry with groundbreaking live tech solutions. If you’re a visionary professional eager to shape the future of iGaming, Atlaslive invites you to apply and drive our continued success in this dynamic market.

Atlaslive — The Tech Behind the Game.

*All submitted resumes undergo a thorough review. If we do not contact you within 5 business days after your application, it means that we are unable to proceed with your candidacy at this time. However, we appreciate your interest in our company and will keep your contact details on file for future opportunities.

Job Title: Machine Learning Specialist (Embeddings, Data Deduplication, AI-Powered Search)

Job Summary:
We are looking for a talented Machine Learning Specialist with expertise in embeddings (text and images), data processing, and AI-driven deduplication. The role involves designing intelligent systems to clean, normalize, and optimize large-scale datasets, improving product discovery and search. This is a fully remote opportunity where you’ll work on cutting-edge ML solutions for real-world retail and enterprise use cases.

Key Responsibilities:

• Build and maintain scalable pipelines for AI-driven deduplication and record linkage across large datasets.
• Develop and fine-tune image and text embedding models for classification, similarity, and search.
• Apply computer vision techniques (image classification, feature extraction, multimodal learning).
• Integrate ML models with relational and non-relational databases (PostgreSQL, MySQL, MongoDB, Redis).
• Apply vector search technologies (e.g., FAISS, Milvus, Pinecone, Weaviate) to power semantic retrieval.
• Research and implement methods for entity resolution, clustering, and anomaly detection.
• Collaborate with data engineers to ensure efficient ETL, preprocessing, and feature engineering.
• Evaluate model performance using precision/recall, ROC-AUC, F1-score, and business KPIs.
• Document experiments and share insights with cross-functional stakeholders.

Must-Have Skills:

• Strong experience with embeddings (text, images, multimodal, or product embeddings).
• Hands-on experience in image classification, image embeddings, and computer vision tasks.
• Proficiency in Python ML stack: PyTorch, TensorFlow, scikit-learn, Hugging Face Transformers.
• Hands-on experience in AI-driven deduplication (fuzzy matching, clustering, record linkage).
• Solid understanding of databases and query optimization.
• Familiarity with vector databases (FAISS, Pinecone, Milvus, etc.).
• Strong problem-solving and analytical skills.
• Fluent English (Upper-Intermediate or higher) for technical discussions and documentation.

Preferred Qualifications:

• Experience with LLM-powered pipelines (RAG, prompt engineering, hybrid search).
• Knowledge of data quality frameworks and large-scale data cleaning.
• Familiarity with cloud ML platforms (AWS Sagemaker, GCP Vertex AI, Azure ML).
• Previous work in retail, e-commerce, or product catalog data is a plus.

Main requirements

• Backend experience
• ML experience
• It is mandatory to use auto-tracker.

Requirements

Position name: Middle+/Senior FullStack NestJS + Postgres/pgvector + ML Infra (CLIP/vLLM) + Next.js
Level: Middle+/Senior
What do we expect:

• 4+ years with NestJS and Postgres; solid SQL schema design and migrations.
• Hands-on with pgvector (or Milvus/Qdrant) and cosine similarity search.
• Practical experience with CLIP embeddings and reranking (MMR, novelty, repetition penalties).
• LLM/vision service integration (preferably vLLM) and enforcing strict JSON outputs.

Soft Skills Requirements:

• Strong communication skills, especially when working with non-technical stakeholders
• Detail-oriented and quality-driven mindset
• Proactive and able to work with minimal supervision
• Comfortable working in a startup or early-stage product environment
• Collaborative and able to explain technical topics clearly
• Ownership mentality: sees problems and actively works toward solutions

Responsibilities:

Backend (NestJS + Prisma + Postgres/pgvector)

• APIs: ComfyUI webhooks (generation_complete), recommendations, feedback/moderation, catalog states, suggestions/popular/ask, gifts (wallet, purchase, fulfillment), precompute cancel.
• Vector search (pgvector top-k) + MMR reranker (quality, novelty, repetition penalties; diversity buckets).
• Job queues & priorities: video_user, image_user, video_precompute; cancellation logic.
• Data model & migrations for media, tags, embeddings, feedback, jobs, gifts, wallets/transactions.

ML Integration

• vLLM (Qwen2-VL 7B Instruct, JSON-only captions), OpenCLIP (text/image embeddings), YOLO/GroundingDINO/MMPose/PaddleOCR/OpenNSFW2, Whisper (optional).
• Media analysis pipeline (keyframes, shots, OCR, pose, NSFW level, embeddings, pHash).
• “Human-in-the-loop” quality gate: like/dislike (+ reasons), watch-ratio for video; only approved are indexed.

Office/Remote: Remote

English: Upper-Intermediate
Russion or Ukrainian a BIG plus

We are looking for an Autonomous systems engineer with a background in computer vision, control theory and mathematical modelling. The ideal candidate will have a strong math background, experience with autonomous systems, modelling and control design. We consider engineers at Middle and Senior levels - tasks and responsibilities will be adjusted accordingly.

Required Qualifications:

• 3+ years in R&D software development
• Hands-on experience with classical computer vision
• Understanding of geometrical computer vision principles
• System identification and control
• Sensor fusion/signal processing
• Proficiency in C++
• Experience with Python
• Experience with Linux and single-board computers
• Ability to quickly navigate through recent research and trends in computer vision and autonomous systems.

Nice to Have:

• Experience with SLAM and/or Visual-Inertial Odometry (VIO)
• Matlab
• Experience with PX4, betaflight, Ardupilot
• Familiarity with neural networks and common CV frameworks/libraries (OpenCV, NumPy, PyTorch, ONNX, Eigen, etc.)
• Experience with simulation tools (Gazebo, AirSim)
• SITL, HITL testing
• ROS2

Working conditions:

• Full employment
• Work from the office in Kyiv or full remote
• Official employment
• Reservation from mobilization
• 24 calendar days of vacation and paid sick leave
• A dynamic, innovative and large-scale team working on a number of new products and improving current products

Lobby X is a socially responsible business, a unique combination of the job platform and full-cycle recruiting agency, specializing in hiring top talents for government, business, tech, miltech, and progressive non-governmental organizations in Ukraine and globally.

Biosphere Corporation is one of the largest producers and distributors of household, hygiene, and professional products in Eastern Europe and Central Asia (TM Freken BOK, Smile, Selpak, Vortex, Novita, PRO service, and many others). We are inviting an IT Infrastructure Administrator to join our team.

Key responsibilities:

• Administration of Active Directory
• Managing group policies
• Managing services via PowerShell
• Administration of VMWare platform
• Administration of Azure Active Directory
• Administration of Exchange 2016/2019 mail servers
• Administration of Exchange Online
• Administration of VMWare Horizon View

Required professional knowledge and skills:

• Experience in writing automation scripts (PowerShell, Python, etc.)
• Skills in working with Azure Active Directory (user and group creation, report generation, configuring synchronization between on-premise and cloud AD)
• Skills in Exchange PowerShell (mailbox creation, search and removal of emails based on criteria, DAG creation and management)
• Experience with Veeam Backup & Replication, VMWare vSphere (vCenter, DRS, vMotion, HA), VMWare Horizon View
• Windows Server 2019/2025 (installation, configuration, and adaptation)
• Diagnostics and troubleshooting
• Working with anti-spam systems
• Managing mail transport systems (exim) and monitoring systems (Zabbix)

We offer:

• Interesting projects and tasks
• Competitive salary (discussed during the interview)
• Convenient work schedule: Mon–Fri, 9:00–18:00; partial remote work possible
• Official employment, paid vacation, and sick leave
• Probation period — 2 months
• Professional growth and training (internal training, reimbursement for external training programs)
• Discounts on Biosphere Corporation products
• Financial assistance (in cases of childbirth, medical treatment, force majeure, or circumstances caused by wartime events, etc.)

Office address: Dnipro, Zaporizke Highway 37 (Right Bank, Topol-1 district).

Learn more about Biosphere Corporation, our strategy, mission, and values at:
http://biosphere-corp.com/
https://www.facebook.com/biosphere.corporation/

Join our team of professionals!

By submitting your CV for this vacancy, you consent to the use of your personal data in accordance with the current legislation of Ukraine.
If your application is successful, we will contact you within 1–2 business days.

Kyivstar.Tech is seeking an experienced Senior Data Scientist / NLP Lead to spearhead the development of cutting-edge natural language processing solutions for our Ukrainian LLM project. You will lead our NLP team in designing, implementing, and deploying large-scale language models and NLP algorithms that power our products. This role is critical to our mission of advancing AI in the Ukrainian language context, and offers the opportunity to drive technical decisions, mentor a team of data scientists, and shape the future of AI capabilities in Ukraine.

About us

Kyivstar.Tech is a Ukrainian hybrid IT company and a resident of Diia.City.

We are a subsidiary of Kyivstar, one of Ukraine's largest telecom operators.

Our mission is to change lives in Ukraine and around the world by creating technological solutions and products that unleash the potential of businesses and meet users' needs.

Over 500+ KS.Tech specialists work daily in various areas: mobile and web solutions, as well as design, development, support, and technical maintenance of high-performance systems and services.

We believe in innovations that truly bring quality changes and constantly challenge conventional approaches and solutions. Each of us is an adherent of entrepreneurial culture, which allows us never to stop, to evolve, and to create something new.

What you will do 

• Lead end-to-end development of NLP and LLM models - from data exploration and model prototyping to validation and production deployment. This includes designing novel model architectures or fine-tuning state-of-the-art transformer models (e.g. BERT, GPT) to solve project-specific language tasks.

• Analyze large text datasets (Ukrainian and multilingual corpora) to extract insights and build robust training datasets. Guide data collection and annotation efforts to ensure high-quality data for model training.

• Develop and implement NLP algorithms for a range of tasks such as text classification, named entity recognition, semantic search, and conversational AI. Stay up-to-date with the latest research to apply transformer-based models, embeddings, and other modern NLP techniques in our solutions.

• Establish evaluation metrics and validation frameworks for model performance, including accuracy, factuality, and bias. Design A/B tests and statistical experiments to compare model variants and validate improvements.

• Deploy and integrate NLP models into production systems in collaboration with engineers - ensuring models are scalable, efficient, and well-monitored in a real-world setting. Optimize model inference and troubleshoot issues such as model drift or data pipeline bottlenecks.

• Provide technical leadership and mentorship to the NLP/ML team. Review code and research, uphold best practices in ML (version control, reproducibility, documentation), and foster a culture of continuous learning and innovation.

• Collaborate cross-functionally with product managers, software engineers, and MLOps engineers to align NLP solutions with product goals and infrastructure capabilities. Communicate complex data science concepts to stakeholders and incorporate their feedback into the model development process.

Qualifications and experience needed 

Education & Experience:

• 5+ years of experience in data science or machine learning, with a strong focus on NLP.

• Proven track record of developing and deploying NLP or ML models at scale in production environments.

• Advanced degree (Master’s or PhD) in Computer Science, Computational Linguistics, Machine Learning, or a related field is highly preferred.

NLP Expertise:

• Deep understanding of natural language processing techniques and algorithms.

• Hands-on experience with modern NLP approaches, including embedding models, text classification, sequence tagging (NER), and transformers/LLMs.

• Deep understanding of transformer architectures and knowledge of LLM training and fine-tuning techniques, hands-on experience developing solutions on LLM, and knowledge of linguistic nuances in Ukrainian or other languages.

Advanced NLP/ML Techniques:

•Experience with evaluation metrics for language models (perplexity, BLEU, ROUGE, etc.) and with techniques for model optimization (quantization, knowledge distillation) to improve efficiency.

•Background in information retrieval or RAG (Retrieval-Augmented Generation) is a plus for building systems that augment LLMs with external knowledge.

ML & Programming Skills:

•Proficiency in Python and common data science libraries (pandas, NumPy, scikit-learn).

•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.

• Experience in building a representative benchmarking framework given business requirements for LLM.

• 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) for scaling data processing or model training is a plus.

• Hands-on experience with containerization (Docker) and orchestration (Kubernetes) for ML, as well as ML workflow tools (MLflow, Airflow).

Leadership & Communication:

• Demonstrated ability to lead technical projects and mentor junior team members.

• Strong communication skills to convey complex ML results to non-technical stakeholders and to document methodologies.

A plus would be 

LLM training & evaluation experience:

• Experience with tokenizer development, SFT, and RLHF techniques.

• Knowledge of model safety: toxicity, hallucinations, ethical considerations, and LLM guardrails.

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 cultural context for model training and evaluation.

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:

• Creative mindset for tackling open-ended AI challenges.

• Comfort in fast-paced R&D environments with evolving priorities.

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.

wallee Group is a leader in delivering advanced payment solutions, focusing on providing robust, scalable, and secure systems across multiple domains. Our mission is to enhance customer experiences through innovative payment and finance systems that enable businesses to grow efficiently. Our operations span across multiple countries, and we thrive on collaboration and agility, using frameworks like Scrum to optimize our teams. At wallee, we aim to stay at the forefront of market trends, continuously innovating to provide the best services to our customers. 

We are looking for an experienced Senior Software Test Engineer to join our team. In this role, you will focus on web testing to help ensure the quality and reliability of our software. The ideal candidate will have several years of experience in web automation and a passion for improving quality throughout the development process. This is a great opportunity to grow your career in QA engineering.

Key Responsibilities:
 

• Participate in reviewing merge requests (mainly in Java) to validate test coverage, identify potential quality issues and ensure acceptance criteria are met
• Contribute to/maintain automated tests in Java (unit, integration, E2E) when necessary
• Perform post-release verification of resolved tickets to ensure issues are resolved and no regressions have been introduced
• Design and execute both manual and automated tests to ensure the reliability, scalability, and security of wallee’s payment systems.
• Collaborate with cross-functional teams to define clear acceptance criteria during user story creation.
• Continuously improve QA processes by researching and integrating new tools, technologies, and best practices.
• Identify and troubleshoot issues using logs, working closely with developers to resolve problems.
• Perform regular regression testing to maintain software quality across multiple releases.
• Work on multiple projects in parallel, demonstrating the ability to quickly switch contexts and manage priorities.

Requirements:
 

• Hands-on experience with Java (JUnit, Mockito or Spring), for independently writing or reviewing automated tests
• Good understanding of the  software quality principles, with experience in software testing and development.
• In-depth knowledge of testing procedures, tools, and the ability to write secure, testable code.
• Good knowledge around test automation. (e.g: Playwright, Cypress).
• Excellent English communication skills, both written and verbal.
• Strong analytical and problem-solving skills.
• Self-motivated, independent, and eager to learn.
• Knowledge of the payment industry and e-commerce payment platforms is beneficial.
• Experience working in Agile teams.
• Jira knowledge in task management and bug reporting.
• Experience testing checkout processes or how payments are handled is a plus.

Benefits

• Flexible working hours to promote work-life balance.
• Work in a professional, international team with flat hierarchies.
• Cooperation with motivated colleagues and numerous personal development opportunities.
• You will play a decisive role in designing products in an omni channel payment company and work with leading companies in the financial industry on international projects.

If you're passionate about quality assurance and eager to contribute to innovative payment solutions, we invite you to apply!

Job Summary:
We are seeking a skilled Full Stack Developer with strong expertise in Web (React) and Backend (Node.js), who can also leverage AI-powered development assistants (such as Cursor) to accelerate and optimize development, to join our US-based team.

Key Responsibilities:

• Build and maintain responsive web applications using React and Next.js.
• Develop server-rendered features, API routes, and optimized page rendering with Next.js.
• Design and implement robust RESTful APIs and backend services with Node.js (Express.js, Nest.js).
• Integrate front-end and back-end components to ensure seamless client-server communication.
• Manage data storage solutions: SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis).
• Containerize applications with Docker and participate in CI/CD workflows.
• Write modular and integration tests using Mocha, Jest, or similar frameworks.
• Follow security best practices to protect applications and user data.
• Collaborate with cross-functional teams to deliver high-quality software on schedule.

Must-Have Skills:

• AI-Accelerated Development: Proven ability to leverage AI-powered coding assistants such as Cursor (or similar tools) to speed up development tasks, code reviews, and debugging.
• Backend Expertise: Minimum of 5 years of professional experience with Node.js and modern JavaScript/TypeScript.
• Front-End Mastery: Strong command of React and Next.js for modern web development.
• API Design: Solid experience creating and consuming RESTful services.
• Async Programming: Deep understanding of asynchronous patterns (async/await, Promises).
• Testing & Debugging: Hands-on experience writing and maintaining unit and integration tests.
• Containerization & CI/CD: Experience with Docker and CI/CD platforms (e.g., GitHub Actions, Jenkins).
• Version Control: Proficient with Git and pull-request workflows.
• Communication: Fluent English (Upper-Intermediate or higher) for technical coordination and documentation.

Preferred Qualifications:

• Familiarity with GraphQL.
• Experience in Agile/Scrum environments.
• Skills in UI/UX design and responsive styling (HTML5, CSS3, Tailwind).
• Team leadership or mentorship experience.

Why Join Us:

• Shape the future of AI in retail with a company recognized by Techstars, Google for Startups, and Stanford
• Work on large, impactful datasets with real-world applications
• Be part of a passionate, mission-driven team building world-class AI systems