Jobs Node.js

We are looking for a Full Stack Developer with strong commercial experience in Node.js, TypeScript, NestJS, and React to join our international team.

If you enjoy building scalable web applications, writing clean code, and working with modern technologies, we'd love to hear from you.

Tech Stack

Backend

• Node.js
• TypeScript
• NestJS
• Express.js

Frontend

• React.js
• Redux

Databases

• PostgreSQL
• MongoDB
• Redis

Nice to Have

• Experience with cloud platforms (AWS or Google Cloud Platform).
• Experience developing or releasing applications for Smart TV platforms:
  • Tizen OS
  • webOS
  • VIDAA.

Requirements

• 3+ years of commercial experience with Node.js.
• Strong experience with TypeScript.
• Commercial experience with NestJS.
• Strong React.js knowledge.
• Experience with Redux.
• Experience designing and developing REST APIs.
• Experience working with PostgreSQL, MongoDB, and Redis.
• Understanding of software architecture principles and best practices.
• Experience with Git and collaborative development workflows.
• Intermediate+ English (spoken).
• Experience communicating with English-speaking clients and participating in technical meetings/interviews.

Soft Skills

• Strong communication skills.
• Self-driven and proactive mindset.
• Desire for continuous learning and professional growth.
• Responsibility and ownership.
• Ability to work independently in a remote environment.

We Offer

• Fully remote work.
• Long-term cooperation.
• International projects.
• Friendly team and transparent communication.
• Opportunity to grow professionally and work with modern technologies.

If you're passionate about Full Stack development and want to work on interesting international projects, we'd be happy to get to know you!

  Hi! We are looking for a Node.js Backend Developer (NestJS) to join our pack at SharksCode 🦈💙
SharksCode is a Ukrainian IT company that develops high-tech software solutions and scalable B2B platforms.
  We are looking for a Node.js Backend Developer who will work on building scalable backend services and integrations within a distributed architecture. In this role, you will participate in designing and developing platform services, integrating external systems, and contributing to technical decisions that impact the overall product architecture.
 

We expect that you:

• Have 5+ years of commercial backend development experience with Node.js.
• Have 3+ years of commercial experience with TypeScript.
• Have 3+ years of experience with NestJS or be ready to quickly adopt it.
• Have hands-on experience with relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB.
• Have experience designing and developing microservice-based distributed systems.
• Have hands-on experience with RabbitMQ, Kafka, and event-driven architecture.
• Have experience with Redis for caching, Pub/Sub, or distributed synchronization.
• Have substantial experience writing and maintaining unit and integration tests using Jest.
• Have strong knowledge of software architecture, design patterns, SOLID principles, and engineering best practices.
• Have experience with Docker, Kubernetes, CI/CD pipelines, and communication technologies such as WebSocket or gRPC.
   

Your future responsibilities:

• Design and develop backend services and platform functionality.
• Build and maintain integrations with third-party technical services.
• Develop and maintain microservices.
• Participate in technical discussions and architecture decisions related to platform development.
• Ensure high code quality and follow engineering best practices.
• Share knowledge and contribute to the development culture within the team.
   

Nice to have:

• Experience building high-load, highly available, or real-time systems.
• Experience with observability and monitoring tools (Prometheus, Grafana, OpenTelemetry, ELK, etc.).
• Experience with cloud platforms such as AWS, GCP, or Azure.
   

Interview stages:

🤝 Interview with Recruiter.
🧠 Technical Interview.
💙 Offer.
 

We offer:

🌴 24 paid vacation days, 14 sick days, and 5 days off.
⏰ Flexible start of the working day — from 9:00 to 11:00.
🏥 Medical insurance.
💰 Bonuses and performance-based rewards.
🐶 Office in the center of Kyiv — pets are welcome, we are pet-friendly.
💆 Lounge area in the office to recharge during the day.
🎾 Padel tennis, football, and training at the polygon for those who enjoy active leisure.
📚 Learning compensation, internal meetups and workshops, as well as access to the corporate LMS with courses.
🎁 Corporate currency that can be exchanged for merch, gifts, or additional benefits.

  Hi! We are looking for a Node.js Backend Developer (NestJS) to join our pack at SharksCode 🦈💙
SharksCode is a Ukrainian IT company that develops high-tech software solutions and scalable B2B platforms.
  We are looking for a Node.js Backend Developer who will work on building scalable backend services and integrations within a distributed architecture. In this role, you will participate in designing and developing platform services, integrating external systems, and contributing to technical decisions that impact the overall product architecture.
 

We expect that you:

• Have 5+ years of commercial backend development experience with Node.js.
• Have 3+ years of commercial experience with TypeScript.
• Have 3+ years of experience with NestJS or be ready to quickly adopt it.
• Have hands-on experience with relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB.
• Have experience designing and developing microservice-based distributed systems.
• Have hands-on experience with RabbitMQ, Kafka, and event-driven architecture.
• Have experience with Redis for caching, Pub/Sub, or distributed synchronization.
• Have substantial experience writing and maintaining unit and integration tests using Jest.
• Have strong knowledge of software architecture, design patterns, SOLID principles, and engineering best practices.
• Have experience with Docker, Kubernetes, CI/CD pipelines, and communication technologies such as WebSocket or gRPC.
   

Your future responsibilities:

• Design and develop backend services and platform functionality.
• Build and maintain integrations with third-party technical services.
• Develop and maintain microservices.
• Participate in technical discussions and architecture decisions related to platform development.
• Ensure high code quality and follow engineering best practices.
• Share knowledge and contribute to the development culture within the team.
   

Nice to have:

• Experience building high-load, highly available, or real-time systems.
• Experience with observability and monitoring tools (Prometheus, Grafana, OpenTelemetry, ELK, etc.).
• Experience with cloud platforms such as AWS, GCP, or Azure.
   

Interview stages:

🤝 Interview with Recruiter.
🧠 Technical Interview.
💙 Offer.
 

We offer:

🌴 24 paid vacation days, 14 sick days, and 5 days off.
⏰ Flexible start of the working day — from 9:00 to 11:00.
🏥 Medical insurance.
💰 Bonuses and performance-based rewards.
🐶 Office in the center of Kyiv — pets are welcome, we are pet-friendly.
💆 Lounge area in the office to recharge during the day.
🎾 Padel tennis, football, and training at the polygon for those who enjoy active leisure.
📚 Learning compensation, internal meetups and workshops, as well as access to the corporate LMS with courses.
🎁 Corporate currency that can be exchanged for merch, gifts, or additional benefits.

  Hi! We are looking for a Node.js Backend Developer (NestJS) to join our pack at SharksCode 🦈💙
SharksCode is a Ukrainian IT company that develops high-tech software solutions and scalable B2B platforms.
  We are looking for a Node.js Backend Developer who will work on building scalable backend services and integrations within a distributed architecture. In this role, you will participate in designing and developing platform services, integrating external systems, and contributing to technical decisions that impact the overall product architecture.
 

We expect that you:

• Have 5+ years of commercial backend development experience with Node.js.
• Have 3+ years of commercial experience with TypeScript.
• Have 3+ years of experience with NestJS or be ready to quickly adopt it.
• Have hands-on experience with relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB.
• Have experience designing and developing microservice-based distributed systems.
• Have hands-on experience with RabbitMQ, Kafka, and event-driven architecture.
• Have experience with Redis for caching, Pub/Sub, or distributed synchronization.
• Have substantial experience writing and maintaining unit and integration tests using Jest.
• Have strong knowledge of software architecture, design patterns, SOLID principles, and engineering best practices.
• Have experience with Docker, Kubernetes, CI/CD pipelines, and communication technologies such as WebSocket or gRPC.
   

Your future responsibilities:

• Design and develop backend services and platform functionality.
• Build and maintain integrations with third-party technical services.
• Develop and maintain microservices.
• Participate in technical discussions and architecture decisions related to platform development.
• Ensure high code quality and follow engineering best practices.
• Share knowledge and contribute to the development culture within the team.
   

Nice to have:

• Experience building high-load, highly available, or real-time systems.
• Experience with observability and monitoring tools (Prometheus, Grafana, OpenTelemetry, ELK, etc.).
• Experience with cloud platforms such as AWS, GCP, or Azure.
   

Interview stages:

🤝 Interview with Recruiter.
🧠 Technical Interview.
💙 Offer.
 

We offer:

🌴 24 paid vacation days, 14 sick days, and 5 days off.
⏰ Flexible start of the working day — from 9:00 to 11:00.
🏥 Medical insurance.
💰 Bonuses and performance-based rewards.
🐶 Office in the center of Kyiv — pets are welcome, we are pet-friendly.
💆 Lounge area in the office to recharge during the day.
🎾 Padel tennis, football, and training at the polygon for those who enjoy active leisure.
📚 Learning compensation, internal meetups and workshops, as well as access to the corporate LMS with courses.
🎁 Corporate currency that can be exchanged for merch, gifts, or additional benefits.

🚀 AIMPROSOFT is looking for a Senior Full Stack Developer (React + Node.js)! 

Aimprosoft is looking for a Senior Full Stack Developer on a contract basis ( ≈ 6-12 months) for an international project in the Utilities domain. 

You'll become part of an engineering team building the next generation of products that help utility companies plan, manage, and optimize field operations through workflow automation, cloud technologies, and AI-powered capabilities. 

🎯About the project & role: 

Our client is building an integrated platform for work planning and operational management in the utilities industry. 

The product ecosystem includes solutions for: 

• Work planning and scheduling 
• Street works permit management 
• Digital Twin for water networks 
• Operational Control Room dashboards 
• Workflow automation 
• AI-powered planning and forecasting 

The technology stack is primarily React, Node.js, Nest.js, PostgreSQL, and AWS, with some services built using Java Spring, Angular, and Serverless technologies. 

As a Senior Full Stack Developer, you'll take ownership of features from concept to production, contribute to architectural decisions, and work closely with experienced engineers and the client's UK team. 

Your responsibilities will include: 

• Designing, developing, and maintaining modern React applications 
• Building scalable backend services and REST APIs using Node.js and Nest.js 
• Delivering end-to-end product features across the full stack 
• Designing and optimizing PostgreSQL databases and queries 
• Deploying and supporting cloud-native applications on AWS 
• Participating in architecture discussions, code reviews, testing, and release activities 
• Troubleshooting production issues and improving platform reliability 
• Collaborating with product managers, designers, and engineering teams 
• Investigating technical challenges independently and driving solutions with minimal supervision 
• Leveraging modern AI development tools such as Cursor and Claude Code to improve productivity and accelerate development 

🔥What We Need From You: 

• 5+ years of commercial experience with Node.js, with a strong backend focus 
• Solid commercial experience with React 
• Upper-Intermediate+ (B2+) English level for daily collaboration with the client's UK-based team 
• Strong experience building REST APIs and backend services 
• Hands-on experience with Nest.js 
• Strong knowledge of PostgreSQL 
• Experience working with AWS services, including Lambda, ECS, API Gateway, and related cloud infrastructure 
• Good understanding of testing practices, Git workflows, and CI/CD pipelines 
• Strong analytical and problem-solving skills 

📌Nice to have: 

• Solid commercial experience with TypeScript 
• Experience with Docker and containerization 
• Infrastructure as Code (Terraform or CloudFormation) 
• Experience building SaaS platforms or highly available production systems 
• Knowledge of monitoring, observability, and cloud security best practices 
• Experience with Feathers.js 
• Experience with Playwright or Selenium for automated testing 
• Experience integrating third-party services such as Stripe, OpenSearch, or Elasticsearch 
• Experience working in large cross-functional engineering teams 
• Familiarity with Java Spring applications 

💼What We Offer: 

• Official military deferment (reservation); 
• A competitive salary that appreciates your skills and experience; 
• Opportunity to join a strategically important pilot team with long-term project prospects 
• Work on modern cloud-native products that deliver real-world impact 
• Exposure to AI-powered development practices and enterprise-scale engineering 
• Open environment where your ideas, technical expertise are valued 

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 is an On-Site Position in Spain❗️

This is an on-site position based at our office in Valencia, Spain. Remote or hybrid arrangements are not available once you join the team.

Are you ready for an international move? 
To make your transition smooth, we provide full relocation support and visa sponsorship for successful international candidates ❗️

⚡ We are looking for an experienced Team Lead Backend Developer (Node.js) to join our development teams in Valencia and lead the backend technologies of our systems. This is a highly hands-on role: you will be actively writing and reviewing code, shaping architecture, and driving technical excellence while mentoring your team.

✅ Responsibilities:

• Lead, mentor, and manage backend engineers through regular one-to-one sessions, feedback, performance evaluations, and individual development plans.
• Actively write, review, and refactor code and directly contribute to building and improving our systems.
• Participate in agile ceremonies (Scrum/Kanban) to ensure team alignment and adherence to agile best practices.
• Enhance system quality by resolving technical debt, optimizing architecture and flows, and performing data cleaning and restructuring.
• Design solutions and make key technical decisions for changes and enhancements.
• Assign tasks and balance workloads within the team to ensure efficient delivery.
• Collaborate with Engineering Managers to adopt the latest technologies and drive company-wide engineering initiatives.
• Document domain knowledge, improve engineering standards, and contribute to initiatives that enhance the broader engineering organization.

✅ Requirements:

• Bachelor’s, Master’s, or higher degree in Computer Engineering, Computer Science, Applied Mathematics, or a related field.
• 8+ years of professional backend development experience.
• 3+ years of experience in leadership positions.
• Strong experience with Node.js and modern web development.
• Knowledge of Kubernetes, containers, infrastructure, system design, SQL, and NoSQL databases.
• Experience with RESTful APIs, message brokers, 3rd party integrations, and secure development practices.
• Familiarity with CI/CD, microservices, cloud-based development, and test-driven development is a plus.
• Deep understanding of data structures, coding patterns, and algorithms.
• Experience with agile methodologies, ideally Scrum.
• Excellent problem-solving, diagnostic, and troubleshooting skills.
• Strong leadership, organizational, and mentoring abilities.
• Upper-intermediate or advanced English.

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

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

✈️ 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 23 working days of Annual Vacation;

Join BrainRocket and rock with us! 🚀

Bold moves start here. Make yours. Apply today! 

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.

❗️Please note that this role is office-based for Spain.

❗️If you need to be relocated, we take care of the process.

✅ Requirements:

✔️Strong knowledge of JavaScript and the ECMAScript 6 standards;

✔️5+ 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 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 an Intermediate level 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 following Spain/EU laws, including registration of family members;
✈️ Relocation package (flight tickets + 2-week hotel stay);
📚 Language development support and partial compensation for classes;
🎁 Birthday celebration gift;
🏝 23 working days of Annual Vacation for proper rest;

🏋️‍♂️Social Club and more than 50 events per year - coming soon;

⚖️ Competitive remuneration level with annual review;

🏄🏻‍♂️ Teambuilding activities.

Bold moves start here. Make yours. Apply today! 

🚀 Backend Developer (Node.js / TypeScript)

Quick Overview

• 🌍 Work Setup: 100% Remote for the first 1–3 months, transitioning to our vibrant Prague office after that.
• 💻 Hardware: High-end work laptop provided directly at the Prague office.

Job Description

We are looking for a skilled Backend Developer to join our team. Our main product is a sweepstakes casino platform, which requires a robust and scalable backend to handle high traffic and ensure smooth user experience. The ideal candidate will have experience in developing and maintaining backend systems, as well as a strong understanding of database management and API development.

What We Offer

• 💰 Competitive Salary: Highly competitive compensation tailored to your skills and experience.
• 📅 Core Schedule: 9:00 AM to 18:00 PM (Remote during the initial period).
• 🌴 Work-Life Balance: 2 weeks of paid vacation + 10 days of paid sick leave.
• 🚀 Thriving Environment: The opportunity to work within a high-performing, professional team building a high-traffic platform.
• ⏳ Trial Period: 3 months to ensure a smooth onboarding and mutual fit.

Requirements

🛠️ Core Experience & Tech Stack:

• Proven experience as a Backend Developer or similar role
• Proficiency in programming languages:
  • JavaScript (Node.js), TypeScript is a must
  • Go is a plus
• Experience with server-side frameworks and libraries:
  • NestJS or Fastify (for TypeScript/Node.js)
  • gin, echo, or fiber (for Go)
• Experience with database management and optimization:
  • PostgreSQL is a must
  • MongoDB is a plus
  • Redis is a plus
• Familiarity with RESTful API development and integration
• Familiarity with AWS or GCP (one would suffice)
• Experience with Docker
• Kubernetes familiarity is a plus
• Experience with version control systems (e.g., Git)

🌟 Bonus Points:

• Anthropic experience would be a huge plus (Claude Code, Claude Agent SDK, CCA-F etc).

Soft Skills

🧠 Who You Are:

• You solve problems: You don't just spot issues; you drive the solutions.
• You ask questions: You value clarity, continuous learning, and alignment.
• A bridge builder: You have no problem working with both the technical and business sides of the team.

This is a new initiative within a product company, and you'll be the only Node.js developer on the team. You'll take full ownership of the product's backend—from making architectural decisions to delivering features and supporting production.

Product

A B2B SaaS platform used by large media groups to manage and run digital advertising campaigns across their websites. The platform handles real-time ad serving, processes large volumes of impression and engagement events, provides heatmaps, click tracking, engagement analytics, and supports both desktop and mobile environments.

Team

The development team consists of 11 people, including the CTO, Product Director, Project Manager, QA Engineers, and Software Developers.

What You'll Do

• Design and own the backend architecture
• Build and maintain backend services using Node.js and TypeScript
• Design scalable data models and APIs
• Integrate services with AWS infrastructure (EC2, S3, Lambda)
• Debug, optimize, and maintain production services

What We're Looking For

• 4+ years of backend development experience; a true Senior Engineer who is confident making architectural decisions independently
• Strong expertise in Node.js and JavaScript/TypeScript
• Deep understanding of asynchronous programming and REST APIs
• Experience designing backend architectures and scalable services
• Experience with AWS (EC2, S3, Lambda)
• Experience with Docker and containerization
• English level B2+ (the technical interview is conducted in English)

About Cowchain
Cowchain is a Web3 development company behind PixelVerse, StepApp, RetroBridge, Hybrid, Tenet, and 150+ other blockchain products with $180M+ combined market cap. We're a team mostly based in Ukraine, with some across Europe, fully remote. We build across DeFi, GameFi, cross-chain bridges, AI agents, NFT platforms, and Telegram mini-apps.

We look for people who take ownership, think deeply, and can work independently, ask the right questions, and move through uncertainty without waiting for step-by-step instructions. No unnecessary hierarchy—you talk directly to the founders when it matters. We value what you bring over how long you've been around.

About the role
We're looking for a Backend Developer with strong Node.js experience to build and ship blockchain products, mainly in the Solana ecosystem, with occasional EVM-related tasks. You'll work on real client products: payment flows, swaps, cross-chain bridges, token mechanics, and transaction logic.

We care less about how many years you've logged and more about how you think: how you break down a problem, gather requirements before building, weigh trade-offs, and reason about architecture.

What you'll do

• Build new features and services from scratch, and support existing ones
• Build, sign, and send transfer and swap transactions
• Work with Solana mechanics: token accounts, priority fees, multi-signature transactions, transaction building
• Integrate with Solana/DeFi protocols such as Pump.fun, Jupiter, Raydium, Meteora, and similar platforms
• Take part in architecture discussions—your input on design decisions matters
• Debug, fix, and harden production solutions

What we're looking for

• 3+ years of commercial backend experience
• Strong Node.js experience
• Solid understanding of blockchain mechanics: gas, priority fees, token account creation, multi-signatures
• Hands-on experience with Solana tooling: Solscan, Solana Explorer, transaction analysis and transaction building
• Experience building, signing, and sending transfer and swap transactions
• Comfortable with Bignumber.js / bn.js for safe big-number math
• Experience with Solana/DeFi protocols such as Pump.fun, Jupiter, Raydium, Meteora, or similar
• Familiarity with Jira, Git, and GitFlow

Nice to have

• Experience with EVM-based chains: Ethereum, Polygon, BSC, Arbitrum, Base, Avalanche, etc.
• Experience with cross-chain bridges: lock/mint and liquidity models
• Experience with token launch mechanics or meme-coin creation
• Outsource/agency background

What we offer

• Fully remote work from anywhere
• Competitive salary with activity bonuses
• Paid vacation and sick leave
• AI tool subscriptions: ChatGPT, Claude, Gemini
• Internal knowledge sharing and Personal Development Plans
• Individual onboarding tailored to your role and project
• Direct access to founders and C-level — decisions happen fast, no unnecessary bureaucracy

We are looking for a Lead Backend Developer to architect and own the backend infrastructure of our fintech platform. You will design scalable microservices, manage critical data flows, and ensure system reliability at scale. Work directly with product, design, and business stakeholders to translate requirements into robust backend systems. 

This is a hybrid role, and we are currently considering candidates based in Lviv (Ukraine). 

Fully remote work is not an option for this position.

What You Will Do
Backend Architecture & Design

• Own the backend architecture end-to-end across microservices.
• Design and implement Node.js / Express services handling 20M+ transactions monthly.
• Architect PostgreSQL schemas for reliability and performance at scale.
• Define API contracts (GraphQL, REST) that support frontend and partner integrations.
• Make critical decisions on data consistency, caching, and async patterns.

Microservices & System Design

• Build and maintain multiple Node.js / Express microservices with clear ownership boundaries.
• Implement webhook-driven workflows and event-driven architecture.
• Design and implement real-time data synchronization pipelines.
• Manage message queues (RabbitMQ) for async operations and inter-service communication.
• Ensure row-level security (RLS) and multi-tenant data isolation at the database layer.

Data & Performance

• Design and optimize PostgreSQL schemas using Prisma ORM.
• Write complex queries, manage indexes, and ensure query performance.
• Implement caching strategies and data consistency patterns.
• Build audit trails and changelog tracking for compliance and debugging.
• Handle sensitive data (KYC, AML, financial records) with security-first approach.

Integration & Third-Party Services

• Integrate with external services (KYC providers, document verification, acquiring networks).
• Design and maintain API integrations with payment processors and clearing centers.
• Build robust error handling and retry logic for critical integrations.
• Document APIs and maintain SDK/integration guides for partners.
Communication & Leadership

• Work directly with product managers and stakeholders to clarify backend requirements.
• Proactively flag technical risks, propose solutions, and keep stakeholders informed.
• Give technical feedback on product feasibility and scalability implications.
• Lead backend code reviews with focus on quality, performance, and knowledge sharing.
• Mentor junior developers and foster backend engineering best practices.

What We Are Looking For
Core Requirements:

• 5–7 years of production experience in Node.js backend development.
• Strong TypeScript across the entire stack (no JavaScript-only experience).
• PostgreSQL expertise: schema design, optimization, transactions, advanced queries.
• Prisma ORM or similar ORMs and hands-on experience with relational databases.
• GraphQL schema design and resolver implementation (REST a plus).
• Microservices architecture: designing boundaries, managing state, async communication.
• RabbitMQ or similar message brokers; event-driven architecture patterns.
• Experience with fintech, payments, or regulated financial products.
• Strong communication skills and comfort working directly with non-technical stakeholders.

Nice to Have:

• Distributed systems experience (eventual consistency, saga patterns, consensus).
• gRPC for service-to-service communication.
• Experience scaling to 100K+ users and handling high transaction volume.
• Background in AML/KYC compliance or financial data handling.
• DevOps sensibility: monitoring, logging, deployment pipelines.
• Experience mentoring backend teams.

Tech Stack
Core: Node.js, Express, TypeScript, PostgreSQL, Prisma ORM, GraphQL, RabbitMQ, gRPC
Supporting: REST APIs, Webhooks, Real-time data sync, Multi-tenant architecture, Audit logging

What We Offer

• Full backend ownership and architectural control.
• Work on systems handling millions of transactions and 100K+ merchants.
• Direct access to product and business stakeholders.
• Modern microservices stack with no legacy debt.
• AI-friendly engineering culture—we embrace tools that make you more effective.
• Deep fintech learning: multi-partner networks, compliance, payment flows.
• Competitive compensation and benefits package.

We're looking for a Node.js Developer in Odesa.

You'll lead the migration of our core product to Node.js, rewriting the backend from scratch. At the beginning, you'll be driving the migration independently.

The company develops its own products, with customers including Disney, Carlsberg, and Lexus.

You'll be the first Node.js developer on the team.

What you'll do

• Design the backend architecture in Node.js
• Build backend services using Node.js and TypeScript
• Design scalable data models and APIs
• Integrate services with AWS infrastructure (EC2, S3, Lambda)
• Debug and optimize production services

We're looking for someone with

• 4-6 years of backend development experience with Node.js
• Strong JavaScript / TypeScript skills
• Solid understanding of asynchronous programming and REST APIs
• Experience designing backend architectures and scalable services
• AWS experience
• English level B2+ (the technical interview and daily communication with the CTO are conducted in English)

What we offer

• 20 working days of paid vacation + 5 paid sick days
• Private medical insurance (starting from the third month)
• Official employment, tax coverage, and accounting support

📋 Requirements

• 4+ years of commercial backend development experience with Node.js and TypeScript.
• 4+ years of hands-on production experience with PostgreSQL and other relational databases.
• Strong SQL expertise, including:
  • Query optimization for high-load systems.
  • Index design and database performance analysis.
  • Transaction management and concurrency control.
  • Identifying and resolving database performance bottlenecks.
• 3+ years of commercial experience with NestJS.
• Strong understanding of:
  • Dependency Injection (DI).
  • Modular application architecture.
  • Clean Architecture and software design principles.
  • REST API design and backend service architecture.
• Proven experience developing and maintaining high-load production systems.
• Solid experience with automated testing (unit/component and integration tests).
• Experience with load and performance testing, including bottleneck analysis and validating system behavior under heavy traffic.
• Experience working with systems where financial accuracy, idempotency, transactional consistency, and auditability are critical.
• Ability to write clean, maintainable, well-structured, and testable code.
• Full ownership of delivered functionality, from implementation and testing to deployment support, monitoring, and production incident investigation.
• Strong communication skills with the ability to clearly explain technical decisions, implementation details, and associated risks.
• Ability to work effectively under deadlines and independently prioritize tasks.
• Experience with code reviews, debugging, logging, monitoring, and production incident response.

🎲 iGaming Experience

• Commercial experience in the iGaming industry.
• Experience developing or maintaining backend systems for online casinos, sportsbooks, gaming platforms, wallets, payment systems, or transaction processing.
• Experience integrating third-party game providers, payment gateways, and external services.
• Ability to investigate and resolve discrepancies in financial data, transactions, and third-party integrations.
• Strong understanding of the reliability, security, and data consistency requirements of production iGaming platforms.

➕ Nice to Have

• Practical experience using AI-powered developer assistants such as Cursor, Claude, or similar tools.
• Experience with Redis, message queues, background jobs, and event-driven architecture.
• Experience with Docker, Kubernetes, CI/CD pipelines, and cloud infrastructure.

🎁 What We Offer

• Work Format: Fully Remote.
• Compensation: Competitive salary, discussed individually based on experience.
• Growth Opportunities: Work with a modern technology stack, a strong engineering team, minimal bureaucracy, and AI-powered development tools to streamline routine tasks.

About AIstats

AIstats is transforming the football data market by moving from 2D to 3D, powered by a cutting-edge Computer Vision and Machine Learning ecosystem that unlocks deep insights for both fans and professionals.

In 1.5 years, the Warsaw-based startup has grown from $0 to $3M ARR and secured over $2M in funding. As an AI-first startup, we’re looking for passionate builders who want to create something big and shape the future of football intelligence with us.

What we build

Advanced Football Analytics - a mobile app for football fans and bettors that reached 100k MAU in less than a year, featuring advanced statistics powered by our proprietary ML and Computer Vision technologies.

Advanced Analytics for Football Clubs - a next-generation analytics platform helping football clubs, scouts, and agents make smarter decisions both on the pitch and in the transfer market. Thanks to our early leadership in skeletal tracking data, AIstats secured several Tier-1 club partnerships within months of launching the platform.

Key Responsibilities

• Development of new HTTP and WebSocket endpoints with integration of third-party APIs (REST/gRPC/GraphQL - depending on tasks).
• Writing unit and integration tests to ensure correct operation of APIs, including boundary cases and work with external services.
• Performing load testing and code profiling to identify bottlenecks and improve performance.
• Working closely with frontend, analytics and product teams - from discussing specifications to implementing solutions in production.

Requirements

Must have:

• Strong knowledge of Node.js and TypeScript, experience in REST/WebSocket API development.
• Experience with microservice architecture and interaction between services via RabbitMQ, Redis, TCP connections.
• Knowledge of PostgreSQL (query writing, indexing, transactions, migrations).
• Experience with MongoDB and understanding when it is appropriate to use it.
• Experience with Docker, understanding of how docker-compose works.
• Understanding of the principles of Nginx as a proxy server (including in the context of WebSocket/HTTPS).
• Proficiency with Socket.io, understanding of its features (e.g., rooms, reconnect, persistence, etc.).
• Experience in configuring logging, debugging and profiling backend code.

Will be a plus:

• Understanding how Billing systems work
• Experience with Elasticsearch: setting up and using it for full-text search.
• Load testing skills and tools (e.g. k6, Artillery, autocannon).
• Understanding and implementation of HTTPS, certificates, working via secure WebSocket.
• Experience with CI/CD and build automation in a Docker environment.
• Team development experience: code review, git flow, Jira/YouTrack/Linear.

What we offer

• Fully remote work format and flexible working hours.
• Competitive salary pegged to USD.
• 24 days of paid vacation and 15 additional paid days off (including sick leave, personal days and corporate holidays)
• A friendly communication culture, rapid product cycles, and transparent processes.
• Dynamic work environment with a team passionate about sports and technology.
• Opportunities for professional development and career growth.
• No micromanagement — just trust, ownership, and freedom to experiment.
• Mentorship and high-quality engineering feedback.

Join our team and help drive innovation in the football industry!

We are seeking an energetic, multi-talented VoIP Software Engineer who is excited by complex technical challenges and motivated by building high-quality communication products. You will be a core contributor to our business phone system, designing and implementing new features across multiple product areas, from SIP infrastructure to integrations with external services. 

This role combines deep VoIP expertise with strong software development skills in modern web technologies. 
 

Responsibilities 

• Design, develop, and maintain VoIP services and components for our SIP-based platform. 
• Implement and enhance integrations with external systems, including third-party APIs. 
• Analyse, troubleshoot, and resolve complex SIP/RTP/WebRTC issues to ensure high call quality and reliability.  
• Apply secure software design and development principles across all layers of the stack. 
• Develop and maintain RESTful APIs and related backend services. 
• Conduct testing and optimize performance and scalability. 
• Support the team in defining, improving, and enforcing secure development processes and policies. 
   

Required Skills & Experience 

• Bachelor’s degree in Telecommunications, Computer Science, or a related programming/engineering field. 
• Solid experience as a VoIP developer/engineer working with SIP-based platforms. 
• Strong hands-on experience with Kamailio and Asterisk (design, scripting, configuration, and troubleshooting). 
• Deep understanding of SIP and related protocols: TLS, SDP, RTP/SRTP/RTCP, ICE, WebRTC. 
• Good experience with FreeSWITCH and/or FreePBX 
• Experience in monitoring with tools such as Grafana, Zabbix, Loki (or similar). 
• 3+ experience with Node.js \ python and Express.js (or similar Node frameworks). 
• Experience designing and building REST APIs.
• Hands-on experience with relational databases (RDBMS) such as MySQL and PostgreSQL. 
• Strong background working in Linux environments (system administration basics, networking tools, shell scripting is a plus). 
• Git and standard CI/CD workflows. 
• Experience with AWS services ( EC2,S3, AWS cli, ECS, ALB, ERC) a plus 
• Knowledge and experience with Message brokers (SQS, RabbitMQ). 
• Ability to work independently as well as effectively collaborate within a team. 
• Strong self-learning skills and willingness to stay current with VoIP and software development technologies. 
• Good problem-solving abilities and a structured approach to debugging and troubleshooting. 

Probation period: 3 months

Work equipment: Yes