Jobs

FAVBET Tech develops software that is used by millions of players around the world for the international company FAVBET Entertainment.
We develop innovations in the field of gambling and betting through a complex multi-component platform which is capable to withstand enormous loads and provide a unique experience for players.
FAVBET Tech does not organize and conduct gambling on its platform. Its main focus is software development.

Main areas of work:

• Betting/Gambling Platform Software Development — software development that is easy to use and personalized for each customer;
• Highload Development — development of highly loaded services and systems;
• CRM System Development — development of a number of services to ensure a high level of customer service, effective engagement of new customers and retention of existing ones;
• Big Data — development of complex systems for processing and analysis of big data;
• Cloud Services — we use cloud technologies for scaling and business efficiency.

Requirements:

• 4+ years of commercial experience in Node.js (Fastify/Koa/NestJS would be a +).
•    Strong skills in relational and NoSQL databases (PostgreSQL, MySQL, Redis, MongoDB).
•    Strong expertise in TypeScript.
•    Experience with CDN implementation and performance optimization
•    Unit/integration/load tests
•    Understanding of design patterns, clean architecture.

•    Proven track record in developing scalable, enterprise-level solutions

   

  Responsibilities :

•   Implementation of API migration to a new approach
•    Development of new features and new parts of the services
•    Handling complex problems that might arise during solution development and provide field support with creative and rapid solutions  
•    Constantly improving code organization and evolving application design
•    Writing new and updating existing integration tests

We offer:

• 30 days off per year (vacation and sick days) — we value rest and recreation. We also comply with the national holidays.
• Medical insurance for employees and the possibility of training employees at the expense of the company and gym membership.
• Remote work; after Ukraine wins the war — our own modern lofty office with spacious workplace, and brand-new work equipment (near Pochaina metro station).
• Flexible work schedule — we expect a full-time commitment but do not track your working hours.
• Flat hierarchy without micromanagement — our doors are open, and all teammates are approachable.

During the war, the company actively supports the Ministry of Digital Transformation of Ukraine in the initiative to deploy an IT army and has already organized its own cyber warfare unit, which makes a crushing blow to the enemy’s IT infrastructure 24/7, coordinates with other cyber volunteers and plans offensive actions on its IT front line.

About the Role

We are seeking a talented and experienced Senior Node.js Developer to join our growing team. In this role, you will lead the backend development of scalable web applications and APIs, contribute to architecture decisions, and mentor junior developers. You should have a deep understanding of server-side JavaScript and a strong grasp of modern web development practices.

Key Responsibilities

• Design, develop, and maintain backend services and APIs using Node.js.
• Collaborate with front-end developers, DevOps, and product teams to deliver high-quality features.
• Optimize application performance and scalability.
• Write clean, efficient, and well-documented code.
• Participate in code reviews and provide mentorship to junior developers.
• Ensure best practices in security and data protection are followed.

• Stay current with emerging technologies and development trends.

   

Requirements

• 4+ years of professional experience in Node.js development.
• Strong knowledge of JavaScript (ES6+), asynchronous programming, and RESTful API design.
• Experience with frameworks such as Express.js or NestJS.
• Proficiency in working with databases (SQL and NoSQL).
• Familiarity with Git, CI/CD pipelines, and cloud platforms (AWS, GCP, or Azure).
• Solid understanding of software engineering principles and Agile methodologies.

• Strong communication and teamwork skills.

   

Nice to Have

• Experience with TypeScript.
• Knowledge of GraphQL, WebSockets, or Microservices architecture.
• Familiarity with Docker and container orchestration (e.g., Kubernetes).

Benefits

• Competitive salary and performance bonuses.
• Flexible working hours and remote options.
• Professional development and learning opportunities.
• Collaborative and inclusive team culture.

Sharkscode is looking for a Node.js Engineer to join our team!

To achieve the results you’ll need:
- 3+ years of commercial development experience with Node.js, Express.js;
- Deep knowledge of MongoDB, MySQL, PostgreSQL(optional), redis(optional);
- Experience with queues (rabbit);
- Experience in connecting third-party services, designing/writing API;
- Understanding of the specifics of working with distributed systems

Will be a plus:
- TypeScript, nest;
- Experience in covering code with autotests (Unit/Integration/E2E);
- Experience with high-load systems

How exactly you'll influence the company’s progress:
- Design and develop a product;
- Develop integrations with third-party financial and technical services;
- Design and develop public payment web services and internal microservices;
- Participate in decision-making on the feasibility of using certain technologies/practices at the platform level;
- Follow a development culture and share the knowledge already acquired with the team.

For comfortable and effective cooperation we offer the following:
- Opportunity to influence and feel your impact inside the company;
- Compensation that grows alongside your achievements;
- Paid vacation (17 days/year) and sick leaves;
- Medical insurance;
- Budget for conferences, seminars, and training that will help you grow as a professional;
- Free English courses;
- Flexible working hours;
- We have a cozy, modern office filled with everything you need in the historic center of Kyiv with free parking places.

Our stages: 

Interview with recruiter-> Tech Interview-> Offer

We search for a «willing to learn» person who wants to learn and develop enterprise-level web applications/websites.

Skills & Requirements:

• You’ve got at least 1 year of experience in JavaScript

• You’ve worked with some of the modern JavaScript frameworks — Vue.js

• You have experience with Node.js

• You have experience with NoSQL databases (ideally MongoDB)

• You feel comfortable communicating in English

• You’re passionate about solving new problems

• You are always looking for the best solution

We are offering:

-Senior team;

-Regular review;

-Long-term employment;

-Challenging projects;

-Certifications;

Responsibilities:

-Code review.

-Functionality improvements to an existing solution

-Increasing system stability, testability, maintainability, and security

We are a rapidly growing startup building an advanced management and analytics platform for companies operating on fan platforms such as OnlyFans, Fansly, and others. Our platform helps businesses efficiently manage large numbers of accounts and teams, offering powerful tools for operational optimization and revenue growth. At the core of our system are powerful automation workflows, advanced data collection, and actionable insights that help our users optimize their operations.

The Role

We’re looking for an experienced backend engineer to take a leading role in this project. You’ll be responsible for designing system architecture, hands-on coding, and driving technical decisions.

What You’ll Do:

• Lead the development of the statistics subsystem, focusing on analytics and reporting.
• Design and implement microservices to automate key processes for our users.
• Build and maintain high-performance databases like ClickHouse, TimescaleDB and other specialized tools to handle large-scale data and optimize analytics flow.
• Work with large volumes of events and data streams, ensuring optimal performance and reliability.
• Collaborate with cross-functional teams to ensure seamless integration of automation and statistics features.
• Continuously optimize existing systems for performance, scalability, and reliability.

Your Expertise:

• Strong experience with Node.js, focused on backend development and building scalable, high-load systems.
• Experience with high-load databases such as ClickHouse, TimescaleDB, DynamoDB, Spark, and Cassandra, to handle and process large volumes of data efficiently.
• Expertise in real-time data processing, with a focus on streaming analytics and optimizing performance.
• Experience designing and implementing microservices, ensuring high availability, fault tolerance, and scalability.
• Strong knowledge of performance optimization for low-latency systems that can handle large-scale data processing.
• Solid understanding of cloud platforms (AWS, GCP, etc.) and containerization technologies (Docker, Kubernetes) for scalable deployments.
• Excellent problem-solving skills, with the ability to design efficient solutions for high-traffic data processing.
• Familiarity with event busses and message queues (e.g., Kafka, RabbitMQ, SQS) for real-time data processing.

🌲 Tree Solutions – Full-Stack Next.js Developer (Middle Level)

🚀 Immediate Start – Apply Now!

🔍 Who We're Seeking

We're looking for a Middle-level Full-Stack Next.js Developer with solid production experience. You must have proven expertise with our tech stack, excellent multitasking abilities, and thrive independently in a dynamic environment.

⚙️ Essential Tech Skills:

• Next.js: SSR, App Router, API routes, middleware, performance tuning.
• Node.js: REST APIs, async/await patterns, backend logic.
• Nest.js: Modular architecture, services/controllers, API structure.
• React (Next.js): Custom hooks, global/local state, reusable component patterns.
• Prisma/Drizzle ORM: Schema modeling, DB migrations, PostgreSQL integration.
• Tailwind CSS: Utility-first, responsive UI design.
• Clerk/Auth: OAuth, JWT, RBAC, session handling.
• AWS Basics: CI/CD, deployment, environment configs.

🧩 Responsibilities:

• Build and maintain scalable web applications using Next.js, Nest.js, and Node.js.
• Work closely with product managers and designers.
• Optimize apps for speed, SEO, and performance.
• Write clean, maintainable, and testable code (unit/integration tests).

💬 Soft Skills:

• English: Upper-Intermediate or higher.
• Strong written and verbal communication.
• Self-driven, proactive, capable of handling multiple tasks independently.

🌍 About Tree Solutions:

Tree Solutions is a product and service company specializing in Web Development, AI integrations, and Machine Learning. We work with startups and enterprises across the US and EU, delivering real-world, high-impact platforms.

🧠 Current Project Spotlight – AI Marketplace

We’re developing an AI-driven Marketplace tailored for local businesses and households. The platform will help users find trusted craftsmen, plumbers, carpenters, and other specialists, enhanced with:

• Live AI Video Integration for instant issue diagnosis.
• Voice-based summaries and chat integration.
• Smart scheduling, feedback, and expert discovery.

💼 What We Offer:

• Participation in real products (e.g., AI-powered chat platform, AI Marketplace).
• Involvement in architectural and tech decisions.
• A strong team, transparent processes, and long-term engagement.
• Competitive compensation and room to grow.

📩 Ready to build with us? Apply now and make real impact at Tree Solutions.

We’re seeking a strong, middle-to-senior-level Backend Node.js Developer with 4–5 years of commercial experience.

Responsibilities
— Working on a fintech/crypto project as a backend developer
— Direct cooperation with the clients’ teams (staff augmentation)

Requirements
— 4+ years of commercial experience as a back-end or full-stack developer
— At least 3 years of experience with NodeJS (Express or NestJS)
— Experience with relational and non-relational databases (PostgreSQL, MongoDB, etc.)
— Familiarity with RESTful API design principles
— Verbal English level B2 or higher
— Strong analytical skills
— High level of responsibility, self-motivation and involvement

Will be a plus
— Experience with Retool
— Experience working on fintech or crypto projects

We offer
— Competitive salary based on the interview assessment
— Remote work
— Paid vacation (18 working days per year) and sick leaves
— Help of accountant
— Software compensation (Cursor, Claude, ChatGPT)
— Modern tech stack, consistent knowledge improvement
— Working on various exciting projects in different areas

To get the job:
Please apply with a cover letter highlighting your backend expertise, achievements, and personal skills.

Interview stages
— Online screening interview
— Technical interview or testing
— Final interview with CEO
— Job offer

About the Company

We are shaping the future of AI-driven customer service for home service businesses. Partnering with some of the most prominent names in the U.S. market, we leverage AI voice agents and prompt chains to automate real-world customer service at scale. If you’re passionate about building impactful technology used by real customers every day, you’ll feel right at home here.

About the Role

We’re looking for an independent, full-ownership engineer to join our remote team. In this role, you’ll work across our entire tech stack - Node.js, Next.js, and Firebase - taking features from concept to deployment. This is a high-autonomy position with meaningful ownership and direct impact. We value initiative and accountability over hand-holding.

Responsibilities

• Design, build, and deploy new features across the full stack
• Troubleshoot and resolve production issues end-to-end
• Take full technical ownership of key areas in the codebase
• Communicate clearly and work effectively in a fully remote, asynchronous environment

Tech Stack

• Node.js
• Next.js
• Firebase (Authentication, Firestore, Functions, Hosting)
• Bonus: Experience with AI frameworks, large language models (LLMs) integrations, or prompt chaining

Who You Are

• Self-driven and proactive, with a strong bias toward action and execution
• Confident in your problem-solving and debugging abilities
• Comfortable owning the entire lifecycle of a feature or product
• Bonus: Experience building AI agents or LLM-based tools
• Extra bonus: Experience shipping production software either independently or as the technical lead

About Us:
We're an ambitious marketing technology company building a next-generation AI-powered marketing platform. As we scale our innovative product, we're looking for a skilled Node.js Backend / Fullstack Engineer to join our growing team.

What You’ll Work On:
You’ll play a key role in shaping and scaling core infrastructure for our platform. This includes working on:

• Authorization and authentication systems
• Robust user management modules
• Asynchronous backend architecture
• Integrating and scaling with a vector database

• Supporting the foundation for AI-driven marketing services

   

Tech Stack Highlights:

• Node.js
• PostgreSQL / Vector DBs (e.g., Pinecone, Weaviate, etc.)
• REST/GraphQL APIs
• AWS / GCP

• Optional: React or other frontend frameworks (for Fullstack role)

   

What We’re Looking For:

• 3+ years experience with backend development using Node.js
• Solid understanding of asynchronous architecture patterns
• Experience designing scalable APIs and working with relational databases
• Familiarity with modern authentication and authorization best practices

• Bonus: exposure to vector databases or AI/ML platforms

   

Nice to Have:

• Experience or interest in AI-powered applications
• Frontend experience (React, Next.js, etc.) for fullstack flexibility

• Experience in marketing technology or SaaS platforms

   

Why Join Us?

• Work on a cutting-edge product from the ground up
• Influence key architectural decisions
• Collaborate with a small, talented team
• Flexible remote work and competitive compensation

We are seeking a skilled Senior Node.js Developer who will join our team in the office in Warsaw.

✅ Requirements:

✔️Strong knowledge of JavaScript and the ECMAScript 6 standards

✔️3+ years of commercial experience with Node.js and Nest.js

✔️5+ years of commercial experience in web development

✔️Commercial experience of working with high-load SQL or NoSQL databases

✔️Commercial experience of implementing REST, GraphQL, and WebSockets

✔️Understanding of the TDD principles and experience of writing tests

✔️Understanding of microservice architecture principles

✔️Experience of GIT version control system

✔️Experience with RabbitMQ

✔️Experience with Redis

✔️Experience with databases: MongoDB, MySQL

✔️At least an Intermediate level of English.

✅ Will be a plus:

✔️2+ years of hands-on experience developing CI/CD/Micro Services architecture/Containers

✔️Experience with Kubernetes

✔️Experience with Nats

✔️Experience with TypeScript.

✅ Duties and opportunities:

✔️In-house platform development

✔️3rd party API integrations

✔️Actively participate in developing new features from scratch.

✅ We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment

📚 Opportunity to develop language skills with partial compensation for language courses

🎁 Special gifts for birthdays, weddings, and newborns

🏝️ 20 working days of paid annual vacation, plus paid sick leaves

🍲 Office snacks and refreshments

🏋️‍♂️ Sports package to support a healthy lifestyle

🩺 Comprehensive medical insurance for you and your partner

📍 Comfortable office with great facilities in a prime location

🎉 Exciting corporate events, team-building activities, and international company parties.

We are looking for a Full-Stack React & Node.js Product Developer for Estonian startup Vespia - AI Business Verification, AML and AI Transaction Monitoring SaaS. Vespia is a Winner of Mastercard Lighthouse FINITIV Baltics 2024. We were named the Emerging Cybersecurity Startup of 2021 by EMERGE.

Now we’re building a high-performance AI Financial Transaction Monitoring SaaS. This includes real-time and historical financial transaction processing, a dynamic rule engine, robust case management, and seamless integration with third-party KYC/AML/KYB tools.

You’ll work across the entire stack - from data ingestion and rule evaluation to building intuitive interfaces for compliance analysts.

Key Responsibilities

Backend (Core Logic & Infrastructure)

• Architect and implement transaction pipelines capable of high-volume data ingestion and analysis.
• Build a flexible and configurable rule engine (thresholds, behavioral patterns, velocity checks).
• Design and manage a scalable case management system (alerts, tasks, notes, timelines, audit trails).
• Ensure system scalability, observability, and performance under high transaction loads.
• Integrate with third-party services (e.g., KYC/AML/PEP screening APIs).

Frontend (UX for Compliance)

• Design and implement scalable big data ingestion and processing pipelines, integrating data engineering best practices to support real-time analytics and rule-based decisioning.
• Develop modern, responsive, and accessible UI components using React.js and Apollo Client.
• Build dynamic dashboards for alerts, transaction timelines, and customer profiles.
• Implement rule configuration interfaces, alert scoring visualizations, and analyst workflows.
• Ensure real-time data updates and intuitive UX for case triage, investigation, and escalation.

Planned stack (we are flexible)

• Frontend: React.js + libraries
• Backend: NestJS (TypeScript), GraphQL, PostgreSQL, Redis, RabbitMQ
• Infrastructure: AWS (S3, CloudFront, IAM, Pipelines), Docker, Kubernetes.

Required Experience

Backend

• 2+ years experience with Node.js/NestJS, GraphQL, and TypeScript
• Expertise in PostgreSQL (schema design, indexing, optimization)
• Experience with Redis for caching or queue coordination
• Proficient in RabbitMQ (or equivalent) for event-driven architectures
• Deep understanding of API design, secure data flow, and microservices

Frontend

• 2+ years with React.js
• Familiarity with data visualization (e.g., charts, graphs, timelines)
• Solid knowledge of state management and component lifecycle

Will be a strong plus

• If you have build before financial transaction monitoring systems.
• Understanding of financial compliance, KYC/KYB/KYT, or AML workflows
• Familiarity with case management systems or internal compliance tooling (ERP-style)
• Knowledge of rule engines, scoring models, or alert prioritization frameworks
• Experience integrating with KYB, AML or KYC providers

What we offer

• A chance to shape the core of a critical real-time compliance platform
• Work on both product and platform, influencing technical architecture and UX
• Direct collaboration with AML experts, designers, and product leads
• Remote-first, async-friendly culture with clear ownership and impact

If you're excited to push the boundaries of AI Transaction Monitoring and want to help shape the future of AML technology, we want to hear from you!

We’re urgently looking for a Junior Node.JS Developer based in Warsaw

Important: You must be able to work from the office full-time for the first 3 months. After that, a hybrid format may be possible.

Primary Technologies:

- Javascript

- Typescript

- NestJS

- PostgreSQL

- Docker

Nice to have:

- NextJs

- MongoDB

- AWS

We’re looking for someone who’s eager to grow, work closely with the team, and take on real backend challenges.
If you’re in Warsaw and ready to join immediately — apply now!

We’re looking for a Backend Engineer to join this initiative — someone excited to work in a new domain, close to product, and with deep interaction across teams.

Who We Are
We don’t just follow trends—we help define them. For 25+ years, the client has transformed global enterprises. Now, we’re leading the charge in AI-driven solutions that scale with impact. And it’s our people who make it happen, driven, collaborative, and always learning.

About Our Customer
Germany's most popular learning platform for school and training, with over 2 million users monthly. Now, the Client is increasingly active in the training and further education sector, partnering with over 200 companies such as Deutsche Bahn, Sparkasse, Brillux, DIHK, and many more.

Project Tech Stack
Node.js, TypeScript, GCP (Firestore, BigQuery, Cloud Functions, Pub/Sub), Terraform

Requirements

• 4+ years of experience in backend software development in production systems
• Solid knowledge of Node.js, Google Cloud Platform, Firestore, Pub/Sub, and REST APIs
• Experience working with both NoSQL and SQL databases
• Strong fundamentals in software development: object-oriented design, data structures, and algorithmic thinking
• Experience in cross-functional product development efforts
• Clear communication and a collaborative mindset. You share knowledge, take ownership, and value strong team processes

• Familiarity with DevOps practices and infrastructure automation (e.g., CI/CD, Docker, Terraform)
  
  Nice to Have
  Experience with BigQuery

   

English level
Intermediate+

Responsibilities

• Develop and maintain core backend features for our reporting module and other learning management tools
• Design and implement scalable data ingestion and transformation pipelines
• Contribute to new APIs that expose learning insights in intuitive, performant ways
• Collaborate closely with your team to deliver features end-to-end—from architecture decisions to deployment
• Engage in agile development, from planning to reviews

We’re looking for a Senior Backend Engineer to join our team, further developing a core domain responsible for delivering and managing all our app content. Your first project will be a focused migration effort—migrating schema, transforming data, re-implementing core rendering logic, and laying the foundation for future-proof, AI-ready API-driven content delivery.

Who We Are
We don’t just follow trends—we help define them. For 25+ years, the client has transformed global enterprises. Now, we’re leading the charge in AI-driven solutions that scale with impact. And it’s our people who make it happen—driven, collaborative, and always learning.

About Our Customer
Germany's most popular learning platform for school and training, with over 2 million users monthly. Now, the Client is increasingly active in the training and further education sector, partnering with over 200 companies such as Deutsche Bahn, Sparkasse, Brillux, DIHK, and many more.

Project Tech Stack
Node.js, TypeScript, Terraform, GCP, Firestore, Algolia

Requirements

• 5+ years of backend engineering background, using Node.js with Typescript and clean architecture
• Strong experience with NoSQL (Firestore) and relational databases (PostgreSQL/MySQL)—especially schema migration and transformation tasks
• Understanding of API design, caching, and high-performance content delivery
• Comfort with asynchronous, event-driven systems (e.g., via Pub/Sub or webhooks)
• Familiarity with DevOps practices and infrastructure automation (e.g., CI/CD, Terraform, Docker)

Nice to Have
Experience working with Python, practical experience with headless CMS platforms and their customization capabilities, Algolia, CDN caching strategies, integrating AI tools and pipelines

English level
Intermediate+

Responsibilities

• Execute the technical migration of our CMS from Firestore to a headless CMS, including schema design, data transformation, and import tooling
• Re-implement core functionality currently handled in our content-renderer microservice (e.g., asset enrichment, topic structuring, story rendering)
• Design and implement CMS lifecycle hooks or webhooks to support downstream systems and custom functionality, e.g. search indexing with Algolia
• Define and implement a caching strategy suitable for read-heavy production traffic

• Collaborate closely with our Backend Lead to validate designs, review code, and ensure alignment with architectural goals

   

Location
Poland

Limassol, Cyprus

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

❗️IMPORTANT: This position is office based for our office in Limassol, Cyprus.

❗️We can provide relocation assistance if you're outside of the city or country.

We are looking for a skilled Senior Node.js Developer with relocation to Cyprus.

✅ Requirements:
✔️Strong knowledge of JavaScript and the ECMAScript 6 standards
✔️4+ years of commercial experience with Node.js and Nest.js
✔️5+ years of commercial experience in web development
✔️Commercial experience of working with high loaded SQL or NO SQL databases
✔️Commercial experience of implementing the REST, GraphQL and WebSockets
✔️Understanding of the TDD principles and experience of writing tests
✔️Understanding of microservice architecture principles
✔️Experience of GIT version control system
✔️Experience with RabbitMQ
✔️Experience with Redis
✔️Experience with databases MongoDB, MySQL
✔️At least Intermediate lvl of English

✅ Will be a plus: 
✔️2+ years of hands-on experience developing over CI/CD/Micro Services architecture/Containers
✔️Experience with Kubernetes
✔️Experience with Nats
✔️Experience with TypeScript

✅ Duties and opportunities:

✔️In-house platform development
✔️3rd party API integrations
✔️Actively participate in developing new features from scratch

✅ We offer excellent benefits, including but not limited to:

🧑🏻‍💻 Learning and development opportunities and interesting challenging tasks;

📝 Official employment in accordance with the laws of Cyprus and the EU, registration of family members;

✈️ Relocation package (tickets, staying in a hotel for 2 weeks);

🏋️‍♂️ Company fitness corner in the office for employees;

📚 Opportunity to develop language skills and partial compensation for the cost of language classes;

🎁 Birthday celebration present;

🏝 Time for proper rest and 24 working days of Annual Vacation;

🍲 Breakfasts and lunches in the office (partially paid by the company)

Bold moves start here. Make yours. Apply today!