Jobs at Djinni

We are a development studio that launches digital products fast.

We build MVPs in 3–6 weeks and create services, web and mobile applications, and internal systems for clients from Europe, the USA, and Asia.

We work remotely, stay flexible, and focus on results.
 

We launch products and continue developing them together with our clients.

If you work in IT and want to build real products and see fast releases, you’ll fit right in.

Who we’re looking for

Mobile Developer (Middle+)

Focus on building mobile applications for iOS and Android. Our typical tech stack:

• Native iOS (Swift, SwiftUI, UIKit)
• Native Android (Kotlin, Jetpack, Compose, XML)
• React Native (TypeScript)
• State management: Redux, Zustand, MobX (depending on the task)
• API: REST, sometimes GraphQL
• Auth: JWT, OAuth, biometrics
• Payments: Apple Pay, Google Pay, Stripe SDK
• Realtime: WebSockets, Firebase / Pusher (when needed)
• Storage: SQLite, Room, Core Data, AsyncStorage
• Tooling: Xcode, Android Studio, Fastlane, ESLint, Prettier
• CI/CD: GitHub Actions, Bitrise, TestFlight, Play Console
• Analytics: Firebase Analytics, Amplitude, GA4, AppsFlyer
• Crash reporting: Firebase Crashlytics, Sentry
• Performance: profiling, memory leaks, startup time

What you’ll do

• Develop mobile applications from MVP to production
• Build user dashboards, onboarding flows, forms, and payment features
• Integrate mobile apps with backend APIs
• Implement offline mode and data synchronization
• Integrate payments, subscriptions, and in-app purchases
• Optimize app performance and stability
• Publish and maintain apps in the App Store and Google Play
• Work iteratively after release to improve UX, conversion, and retention

Skills we’re looking for

• Experience developing for iOS (Swift) and/or Android (Kotlin)
• Experience with React Native is a strong plus
• Understanding of mobile app architecture (MVVM, Clean, Redux)
• Experience with APIs, authentication, and security
• Experience publishing and updating apps in app stores
• Experience with push notifications and deep links
• Ability to write clean, maintainable code
• Ability to use AI tools to speed up development: code generation, refactoring, testing, and research (with mandatory quality checks before production)
• Git, pull requests, responsibility, and strong communication skills

What you get

• Fully remote work
• Flexible schedule
• International projects
• Fast MVP launches
• Ongoing product support and development after release
• Long-term projects instead of one-time tasks
• Small, strong team with minimal bureaucracy
• Professional and income growth

If you like fast launches and improving products after release, message us.

We are a development studio that launches digital products fast.

We build MVPs in 3–6 weeks and create services, web and mobile applications, and internal systems for clients from Europe, the USA, and Asia.

We work remotely, stay flexible, and focus on results.
We launch products and continue developing them together with our clients.

If you work in IT and want to build real products and see fast releases — you’re welcome to join us.

Who we’re looking for

 
Backend Developer (Middle+)

Focus on backend development and system architecture. Our typical tech stack:

• Node.js, NestJS, Express
• PostgreSQL, MongoDB
• ORM/ODM: Prisma, Mongoose
• API: REST, sometimes GraphQL
• Auth: JWT, OAuth, RBAC
• Payments: Stripe, PayPal, and similar solutions
• Realtime: WebSockets, Redis Pub/Sub (when needed)
• Caching: Redis
• Tooling: ESLint, Prettier, Swagger / OpenAPI
• CI/CD: GitHub Actions, Docker, basic DevOps
• Cloud/Hosting: AWS / GCP / Vercel / Railway (depending on the project)
• Monitoring: Sentry, LogRocket, Prometheus (when needed)
• Security: rate limiting, validation, API protection
 

What you’ll do

• Design and implement backend systems for MVPs and production
• Develop APIs for web and mobile clients
• Design database schemas and optimize queries
• Integrate payments, authentication, roles, and subscriptions
• Ensure system stability, security, and scalability
• Work with queues, caching, and background jobs
• Maintain API documentation
• Improve performance and reliability after launch

Skills we’re looking for

• Strong experience with Node.js, NestJS, and/or Express
• Experience with PostgreSQL and MongoDB
• Solid knowledge of Prisma and ORM concepts
• REST API design and understanding of backend architecture
• Experience with authentication, roles, tokens, and security
• Query optimization, indexing, and transactions
• Understanding when to use monoliths vs microservices
• Ability to use AI tools to speed up development: code generation, refactoring, testing, research (with mandatory quality checks before production)
• Git, pull requests, code reviews, and responsibility for results

What you get

• Fully remote work
• Flexible schedule
• International projects
• Fast MVP launches
• Long-term product development after release
• Ongoing projects instead of one-time tasks
• Small, strong team with minimal bureaucracy
• Professional and income growth

If you like fast launches and improving products after release, message us.

Community Manager (iGaming Affiliate Network)

We are looking for a proactive Community Manager to help build, grow and scale our iGaming affiliate network and technology product through dedicated communities.

This role is about communication, networking and community development: representing the brand, increasing platform awareness, attracting affiliate partners and supporting community activity.

The position is ideal for those who want to develop in the iGaming and affiliate industry and see the direct result of their work. Strong performance = rapid career and financial growth.

🔥 Main tasks

• Promoting the affiliate network and technology product in industry communities

• Building and maintaining a community in Telegram, Discord, forums, LinkedIn and profile chats

• Active interaction with affiliate partners and potential customers: answering requests, supporting discussions, updates

• Creating and publishing community content: announcements, product updates, educational posts, promos

• Supporting onboarding and activating new affiliates from community channels

• Representing the brand in external iGaming and affiliate communities, online events and discussions

• Collecting feedback from the community and transferring insights to the product, marketing and affiliate teams

• Supporting the launch of new features, tools and promotional campaigns

• Coordination with affiliate managers, marketing and product to coordinate communication

• Tracking community growth and engagement, participating in basic analytics

✅ Requirements

• Strong written and verbal communication skills

• Experience or strong interest in community management, digital marketing or affiliate marketing

• High interest in iGaming, affiliate networks and technology products

• Confident online communication and relationship building skills

• Good organizational and time management skills

• Proactivity, initiative and ability to work autonomously

• Willingness to work in a fast-paced, performance-driven environment

• English is a must; Ukrainian and/or Russian is a big plus

💼 We offer

• Work with an international iGaming affiliate network and technology product

• Direct influence on the growth of the brand and platform

• Practical experience in one of the most dynamic digital industries

• Access to global affiliate communities and markets

• Performance-driven environment with rapid career and financial growth

• A supportive team, training and real prospects for long-term development

We at Sigma Software are looking for a skilled Senior Data Engineer to join an exciting short-term project with a US-based customer. This is a remote position, offering you the flexibility to work from anywhere while contributing to a high-impact data platform.

In this role, you will take ownership of designing and optimizing the data foundation for an automated storage capacity forecasting platform. You’ll work with modern technologies, collaborate with experienced engineers, and have the opportunity to influence both technical and process decisions.

Why join us? At Sigma Software, you’ll work in a culture that values innovation, encourages knowledge sharing, and offers the chance to make a real impact on projects used by thousands of businesses worldwide.

CUSTOMER
Our customer is ConnectWise — a US-based software company providing business automation solutions for Managed Service Providers (MSPs). ConnectWise offers a suite of tools for IT service management, cybersecurity, remote monitoring, and business process automation. Their solutions are used globally by thousands of MSPs to streamline operations, improve service delivery, and enhance security for small and medium-sized businesses (SMBs).

PROJECT
The project focuses on building an automated storage capacity forecasting platform for MSPs. The platform will model historical infrastructure data, enable predictive insights, and support lifecycle planning for hardware and storage resources.
It will integrate PostgreSQL, Python-based ETL pipelines, and PowerBI analytics to deliver accurate capacity forecasts and actionable reports for an 18-month planning horizon. The work environment encourages technical ownership, process improvement, and collaborative problem-solving with the customer’s engineering team.

Project duration is 3-4 months

RESPONSIBILITIES

• Design and optimize PostgreSQL data models for historical capacity and lifecycle tracking
• Build and maintain robust ETL pipelines using Python for structured and semi-structured (JSON) data
• Aggregate and structure data by Region, Node Type, and time dimensions
• Support time-series analysis and capacity forecasting use cases
• Develop and enable PowerBI datasets, models, and reports based on clean, reliable data
• Ensure data quality, performance, and scalability across the pipeline
• Translate infrastructure and business requirements into scalable data solutions

• Collaborate closely with software developers and stakeholders on end-to-end data workflows

   

REQUIREMENTS

• At least 5 years of experience as a Data Engineer or in a similar data-focused role
• Strong proficiency in SQL and relational databases, preferably PostgreSQL
• Solid experience with Python for data transformation and pipeline development
• Hands-on experience working with JSON and semi-structured data formats
• Proven track record of building and optimizing ETL processes
• Practical experience with PowerBI, including dataset modeling and report creation
• Experience working with time-series and historical datasets
• Strong understanding of data modelling principles for analytics and forecasting

• Upper-Intermediate level of English 

   

WILL BE A PLUS:

• Experience with Kibana or other BI/visualization tools
• Familiarity with monitoring, infrastructure, or capacity planning data
• Exposure to forecasting techniques or growth trend analysis
• Experience integrating data from metrics and inventory systems

We are looking for an experienced Unreal Engine Engineer to lead a small team of two Unreal developers and take full ownership of a production-stage Unreal Engine–based application used in e-commerce by real customers. This is a client-facing, high-impact product in which stability, visual quality, and performance directly affect the user experience.

The role combines hands-on Unreal development with technical leadership. You will also work as part of a cross-functional product team, collaborating closely with front-end and back-end engineers to ensure seamless integration between Unreal Engine and the rest of the application stack.

YOE: 5 years

Core Requirements:

• C++ Unreal development experience
• Experience compiling Unreal Engine from source
• Strong understanding of Unreal Engine architecture, Blueprints, and optimization for production use
• Proven ability to own and maintain a live Unreal Engine-based product
• Demonstrated experience leading or mentoring other developers
• Ability to make architectural and technical decisions that ensure stability, scalability, and performance
• Comfort working in a cross-functional team with front-end, back-end, and business stakeholders
• Oversee the coverage of existing and new functionalities with autotests
• Perforce version control
• Ukrainian/russian language is needed to communicate with the team
   

Nice to Have:

• Online game development and support 
• 3D modeling or visualization (3ds Max, Maya, Blender, etc.)
• Rendering engines (V-Ray, Corona, etc.)
• WebGL 
• Python or other scripting languages

• English language knowledge, sufficient for technical collaboration

   

Responsibilities:

• Lead and oversee the Unreal Engine development team (2 developers)
• Ensure stability, performance, and scalability of the production UE application
• Lead the effort to implement a public API for UE application
• Act as the Unreal Engine representative in a cross-functional product team
• Collaborate closely with front-end and back-end developers to align architecture and integrations
• Develop and improve tools for 3D asset assembly and scene management
• Work with content creators and artists to achieve optimal asset integration and visual fidelity
• Identify and automate repetitive or inefficient workflows
• Maintain and evolve the automated rendering and image production pipeline
• Continuously analyze and optimize memory usage, load times, and rendering performance
• Prototype and implement a new product hypothesis in collaboration with other product team members
• Provide technical feedback, documentation, and process improvements
• Automated application and asset update to the latest stable UE version on a yearly basis.
   

Expectations:

• Work remotely with consistent availability during core hours or from the office in Warsaw.
• Communicate proactively with the team and management about progress, blockers, and priorities
• Coordinate Unreal development efforts with front-end and back-end teams
• Manage personal and team workload effectively, ensuring delivery reliability
• Identify and drive improvements across technology, process, and pipeline
• Maintain transparency on issues and deadlines

About the role

We are looking for a QA Automation Engineer to work on UI test automation using Java and Selenium WebDriver.

The role is focused on building and maintaining automated test suites, improving test coverage, and supporting product quality during active development.

This is a time-limited engagement (up to 6 months) with a full-time setup, though workload may vary depending on the project phase.

Responsibilities

• Develop and maintain UI automation tests using Selenium WebDriver
• Write clean, maintainable test code in Java
• Work with TestNG and Maven
• Integrate automated tests into CI pipelines
• Analyze test results and investigate failures
• Collaborate with developers and QA team on quality improvements
• Participate in test planning and automation strategy discussions
• Maintain test documentation and reports

Requirements

• Strong knowledge of Java Core (Java 13–21):
   
  • Collections
  • Streams
  • Functional interfaces
• 
   

• Solid understanding of OOP principles

  • Interfaces
  • Abstract classes

   

• Significant hands-on experience with Selenium WebDriver
• Experience with TestNG and Maven
• Understanding of OAuth2 in automated testing scenarios
• English: good speaking and writing skills

Nice to have

• Experience setting up local environments and complex configurations
• Experience with Allure for test reporting
• Experience working in distributed or remote teams

We offer

• Remote work
• Flexible workload within a full-time setup
• Contract up to 6 months
• Clear tasks and technical focus
• Professional team and structured workflow

• Project Description:

  Join the team modernizing the software delivery process for the Body Controls Organization, focusing on Body Control Module (BCM) and Battery Access Module (BAM) Electronic Control Units (ECUs) within the Fully Networked Vehicle (FNV) architecture. This initiative aims to design, implement, and maintain a robust Level 2 (L2) testing framework using a Virtual ECU (vECU) platform. The framework will automate and continuously improve software validation, ensuring all functional and performance requirements are verified in a virtual environment before hardware deployment. Integration with CI/CD pipelines will deliver continuous feedback on component quality, enabling early defect detection and improved software stability.

   

• Responsibilities:

  - Develop a scalable and modular Virtual ECU Development Studio (VEDS) for BCM and BAM ECUs.
  - Ensure compatibility with existing toolchains and enterprise development environments.
  - Implement co-simulation capabilities for seamless interaction between virtual and physical ECUs.
  - Configure the VEDS environment for L2 testing, including network simulation, signal routing, and diagnostic interfaces.
  - Create and execute detailed L2 test cases aligned with software requirements.
  - Automate test script development and integrate automated tests into CI/CD pipelines.
  - Expand virtual ECU test coverage and support development teams in debugging and root cause analysis.
  - Implement reporting and analytics for test coverage, defect trends, and performance metrics.
  - Participate in sprint-based development, contributing to objectives such as test strategy, environment setup, automation integration, test execution, and continuous improvement.

   

• Mandatory Skills Description:

  - Proficiency in Bash, C/C++, Conan, Docker, Cmake, ARM\RH850 baremetal, ghs toolchain, Python.
  - Experience with version control and artifact management tools (GitHub, Jfrog Artifactory).
  - Familiarity with test management tools (e.g., Testrail), defect tracking systems (e.g., JIRA), automation frameworks, and debugging tools.
  - Ability to develop modular, reusable automated test scripts and integrate them into CI/CD pipelines.
  - Knowledge of Automotive network simulation, signal routing, and diagnostic interfaces in automotive environments.
  - Hands-on experience with Matlab co-simulation (Simulink, Stateflow).
  - Strong analytical skills for software requirements analysis and test coverage alignment.

   

• Nice-to-Have Skills Description:

  - Proficiency in Groovy.
  - Experience with Polyspace and SonarQube for code quality and static analysis.
  - Prior involvement in mixed-mode testing scenarios (virtual and hardware ECUs).
  - Exposure to reporting and analytics for test coverage and defect trends.
  - Experience supporting development teams in debugging and root cause analysis.

About: The team is building an AI platform in the gaming industry, working with LLMs, RAG, and multi-agent systems in production.

Responsibilities:

• Design LLM architecture: RAG, multi-agent, tool-calling, memory
• Scale/optimize vector & semantic search (pgvector, hybrid search, reranking)
• Build pipelines for GDD processing and validation
• Develop prompt engineering, evaluation, and guardrails
• Integrate local and cloud LLMs (Ollama / OpenAI-compatible APIs)
• Design fault-tolerant AI systems for production workloads
• Implement monitoring for quality, latency, and cost
• Architect multi-agent workflows and manage agent coordination
• Prepare the platform for TypeScript code auto-generation
• Code review, mentoring, and team technical growth

Must-have:

• 3+ years in ML / Applied AI / LLM projects
• Strong Python
• Hands-on LLM, RAG, embeddings, vector search
• Production AI/ML system design & maintenance
• Multi-agent architectures and LLM orchestration
• PostgreSQL + pgvector (or similar)
• Async and event-driven pipelines
• Docker (production)

• Architectural mindset and ownership

   

Nice-to-have:

• HuggingFace / vLLM / OpenAI / Ollama
• Hybrid search, rerankers, long-context strategies
• RabbitMQ / Redis
• CI/CD and MLOps practices
• TypeScript (basic understanding)
• Experience in game dev or content generation
• Confluence / Jira API integrations

About the company

GraphDex is building a unified trading and analytics terminal for DeFi. We aggregate liquidity, trading execution and analytics across multiple blockchains into a single interface.

We are a product Web3 startup with a small, highly technical team. We move fast, release often, and solve real infrastructure challenges.

About the role

We are looking for a Technical Project Manager who understands how Web3 development works and can coordinate engineers in a fast-changing environment.

This role is not about formal sprint bureaucracy or just tracking tasks. We need someone who can see bottlenecks early, coordinate team efforts, and help deliver features and releases under real

market pressure.

Responsibilities

• Coordinate development across backend, frontend and blockchain modules
• Work closely with Founder, QA and Product team
• Break product goals into clear technical priorities
• Identify blockers, risks and weak points in delivery
• Quickly reorganize team focus when priorities shift
• Coordinate integrations, releases and production launches
• Help the team handle bugs, scaling issues and unexpected production problems

Requirements

• Experience in technical project / delivery management from 5 years
• Solid understanding of Web3 / DeFi ecosystem
• Previous software development experience or strong technical background
• Understanding of system architecture, APIs and development workflows
• Experience participating in product launches or high-pressure release cycles
• Strong prioritization and decision-making skills

Will be a strong plus

• Experience with trading platforms or fintech products
• Experience working with Solana or other high-performance chains
• Experience with real-time or high-load systems

Language requirements

Working proficiency in Ukrainian or Russian is required.
English — intermediate level or higher.

What we offer

• Real Web3 infrastructure product (not outsourcing)
• Small expert team with direct communication
• High level of ownership and influence on processes
• Competitive compensation + possible equity

About the role
 

We are looking for a Technical Support Specialist to support and maintain solutions built on Microsoft Power Platform.

The role focuses on production support, system stability, incident management, and troubleshooting of business-critical applications.

You will work with Power Apps, Power Automate, Azure SQL Database, and integrations with external services, supporting existing solutions and ensuring their reliability and performance.

This is a long-term, full-time position with a structured workflow and clear responsibilities.

Responsibilities

• Provide technical support for production Power Platform solutions
• Troubleshoot incidents related to Power Apps, Power Automate, and Azure SQL Database
• Monitor system stability and respond to incidents in a timely manner
• Investigate root causes and propose permanent fixes
• Support integrations with external services and APIs
• Work with technical documentation and maintain support-related documentation
• Communicate clearly with stakeholders regarding incidents, status, and resolutions
• Participate in incident management and service improvement processes
   

Requirements

• Hands-on experience with Microsoft Power Platform:

  • Power Apps
  • Power Automate

  Understanding of Azure SQL Database

• Experience supporting production systems
• Strong troubleshooting and incident management skills
• Ability to work with technical documentation
• Clear communication skills and ability to interact with stakeholders
• Strong sense of responsibility and attention to detail
• Ability to work independently in a remote environment
   

Nice to have

• Experience with Power BI, Customer Voice, or similar Power Platform tools
• Experience with email services (e.g. SendGrid)
• Experience supporting enterprise solutions
• Knowledge of ITIL or incident management best practices
•  

We offer

• Full-time remote work
• Long-term project
• Stable workload
• Clear processes and responsibilities
• Opportunity to work with Microsoft Power Platform in real production environments

Requirements:

• 1+ years of experience in development
• Strong knowledge of Javascript and TypeScript
• Strong knowledge of Angular
• Strong analytical and problem-solving skills
• Experience working with RxJS ,NgRx ,signals, and new angular syntax template
• Confident AI prompting, understanding of LLM principles (Context window, RAG, System prompts)
• Experience working with AI coding assistants (Cursor, Claude Code, GitHub Copilot)
• Good understanding of asynchronous and reactive programming
• Confident working with the Git version control system
• Understanding of GraphQL
• Intermediate level of English

Would be a plus:

• Experience working with React
• Experience working with Websockets
• Experience building large-scale SaaS platforms supporting millions of users.

Responsibilities:

• Build features and systems with attention to detail and performance.
• Own end-to-end development, from conception to production.
• Engineer not only solutions but also tools to understand the problem.
• Work closely with cross-functional stakeholders to deliver a world-class product.
• Identify and implement improvements to our existing systems.

About the project:

Project management platform. With the help of own API, it’s possible to do multiple integrations with communication, sales, analytics and other applications that are used by co-workers on a daily basis.

We are looking for a frontend engineer to improve the beautifully crafted product that helps millions of people to enjoy their remote work! You will be responsible to deliver production-ready functionality in a cross-functional team and will be able to reach millions of people with your best effort and working time as part of a multinational team of highly skilled developers.

We are looking for a Backend Engineer to join a planned data and services migration project.
The main focus of the role is migrating data from MongoDB to PostgreSQL and rewriting part of the backend services.

This is not a firefighting role, but a structured technical migration with a clear scope and team support.

Responsibilities

• Participate in the migration of data from MongoDB to PostgreSQL
• Rewrite and adapt backend services using NestJS
• Translate MongoDB aggregation logic into SQL-based solutions
• Work with relational data models and transactions
• Optimize queries and data-related computations

• Collaborate with the team on migration-related technical decisionsTech Stack (Core)

  • Node.js 18+, TypeScript
  • react, socket.io
  • NestJS (modules, controllers, services, DI)
  • MongoDB + Mongoose
  • PostgreSQL
  • TypeORM
  • REST APIs, DTOs, validation

  Requirements

  • Commercial experience with Node.js and TypeScript
  • Strong knowledge of MongoDB, including aggregation pipelines
  • Good understanding of relational databases and SQL
  • Careful and accurate work with data and computations
  • Basic understanding of backend security (JWT, roles, permissions)
  • English level: Upper-Intermediate (sufficient for daily communication).
    Nice to Have (Not Required)
    • Experience with NestJS guards, pipes, interceptors
    • Redis, background jobs, or queues
    • Previous experience with database migrations
    • Neo4j or real-time features (Socket.IO)
    • Experience using AI-assisted tools (e.g. Claude Code)

Yojji is a development center, based in Europe. We are a team of specialists with great experience in JavaScript, full-stack development and web design. We provide outsource and outstaff services to reliable frequent customers and startups in the USA, Europe and Israel.

Horoshop is the largest SaaS platform for creating online stores in Ukraine. More than 12,000 entrepreneurs already use our product, and we continue to grow.

We are looking for a Marketer who will help scale the product in Ukraine and international markets. If you think strategically, enjoy experimenting with new channels, and know how to analyze results, we’ll be happy to welcome you to the team.
 

Key Responsibilities

• Planning and executing marketing activities to grow brand awareness and sales.
• Searching for and testing new promotion channels.
• Analyzing campaign performance, optimizing costs, and increasing efficiency.
• Monitoring the market, competitors, and trends in the e-commerce and SaaS domains.
• Collaborating with design, sales, and product teams.
   

Requirements

• 2+ years of experience as a marketer (preferably in B2B, SaaS, or e-commerce).
• Understanding how different marketing channels work.
• Experience with analytics tools (Google Analytics, Looker Studio, etc.).
• Proven successful cases and understanding how to achieve measurable results.
• Proactive mindset with the ability to propose new ideas and bring them to execution.
   

Nice to Have

• Upper-Intermediate level of English or higher.
• Experience launching marketing activities in international markets.
   

We Offer

• A team with minimal bureaucracy and no micromanagement.
• Opportunity to work remotely or from a Kyiv office (with a terrace and lunches).
• Paid vacation and sick leave, as well as learning compensation.
• Competitive salary based on experience and interview results.
   

If you share Horoshop’s approach and want to grow one of the most successful Ukrainian SaaS products, please send your CV and portfolio.

We’ll be happy to get to know you 🙂

We are looking for a Fullstack Engineer  to join our growing team. In this role, you will take ownership of building modern, scalable web applications with a strong emphasis on frontend development using React, while also contributing to backend services built with Node.js.

Responsibilities

• Design, develop, and maintain responsive web applications using React
• Lead frontend architecture decisions and ensure best practices
• Build and maintain backend APIs and services using Node.js
• Collaborate with cross-functional teams to define and implement new features
• Write clean, maintainable, and well-tested code
• Optimize application performance, scalability, and security
• Review code and mentor other engineers
• Participate in technical discussions and contribute to product decisions

Requirements

• 5+ years of experience in software development
• Strong expertise in React and modern frontend tooling
• Solid experience with Node.js and RESTful APIs
• Deep understanding of JavaScript / TypeScript
• Experience with state management, component architecture, and performance optimization
• Familiarity with databases (SQL and/or NoSQL)
• Experience with Git and CI/CD pipelines
• Strong problem-solving and communication skills

Nice to Have

• Experience with Next.js
• Knowledge of cloud platforms (AWS, GCP, or Azure)
• Experience with GraphQL
• UI/UX sensibility and attention to detail
• Prior experience leading technical initiatives

Domain: iGaming / Gambling
Format: Product company
Experience: 5+ years

About the Company

We are an international product company operating in the gambling sector. Our platform delivers real-time personalization for casino and sportsbook products using advanced machine learning. The solution processes live behavioral, transactional, and contextual data to improve player engagement, retention, and overall performance for operators worldwide.

Our focus is on building production-grade ML systems that directly influence what users see in real time — from game recommendations to personalized content and promotions.

Role Overview

We are looking for a Senior Data Scientist to join a product-focused team working on real-time personalization and recommendation systems for iGaming platforms.

This is a hands-on role that combines modeling, experimentation, and close collaboration with engineering and product teams in a high-load, real-time production environment.

Main Responsibilities

• Develop ML-driven features for casino products using supervised learning (regression, ranking, classification)
• Maintain and improve existing recommendation systems in production
• Enhance models using gradient boosting and other supervised approaches
• Perform data cleaning, preprocessing, and feature engineering
• Design and maintain pre- and post-processing workflows
• Optimize training and inference pipelines for performance and reliability
• Integrate ML models into Airflow pipelines in a multi-tenant environment
• Adapt and configure the solution for different clients (tenants)
• Collaborate closely with product and engineering teams on experimentation and feature delivery

As Part of the Team You Will

• Work cross-functionally with data scientists, engineers, product owners, designers, and researchers
• Analyze large-scale datasets to extract insights for product and business decisions
• Propose, implement, and evaluate ML approaches to solve real business problems
• Support and evolve a recommendation solution used across multiple tenants
• Influence product strategy through research, experimentation, and data-driven insights into user behavior

Experience & Education

• 5+ years of professional experience in data science
• Degree in a quantitative field (Mathematics, Statistics, Computer Science, or similar)

Core Skills

• Strong proficiency in Python and SQL
• Hands-on experience with data processing tools (Pandas, Polars)
• Solid engineering skills for building and maintaining scalable ML systems
• Experience implementing observability in ML pipelines (metrics, logging, alerting)
• Knowledge of Docker and Kubernetes
• Strong analytical mindset with the ability to solve loosely defined problems
• Hands-on experience with supervised ML techniques, including:
  • Regression and ranking models (XGBoost, LightGBM, CatBoost, neural networks)
  • Feature engineering and model evaluation (AUC, NDCG, MSE, uplift metrics)
  • Personalization or recommendation systems
• Proven experience deploying ML models to production (near real-time or batch)
• Solid understanding of statistical methods (A/B testing, significance testing)

Nice to Have

• Production experience with large-scale recommendation systems
• Experience with Airflow, Valkey/Redis, FastAPI in production
• Familiarity with contextual bandits or reinforcement learning
• Experience with AutoML tools