Middle Node.js Backend Developer Full Time

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale — fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide.

About the role: We’re looking for a Middle Node.js Backend Developer to join the backend team. You’ll be building the infrastructure that powers revenue and growth — from web billing integrations with payment providers to server-side marketing pipelines that fuel acquisition. If you thrive in high-load, product-driven environments where your code ships to real users and directly impacts the bottom line, this role was made for you.

In this role, you will:

• Develop and ship web billing integrations: payment providers, subscriptions, recurring billing, webhook handling (idempotency, retries, reconciliation)
• Develop and ship marketing integrations: attribution platforms, server-side conversion/events APIs, analytics and CRM/ESP pipelines
• Create technical designs for product epics and decompose them into actionable tasks
• Participate in team processes: grooming, sprint planning, estimations
• Run investigations and tech research (3rd-party API limits, provider selection, edge cases)
• Address tech debt and improve reliability and observability of integrations
• Take part in the full SDLC: design, dev, code review, testing, release, support

It’s all about you

• 3+ years of commercial backend development experience
• 2.5+ years with Node.js (TypeScript)
• Solid experience with relational and non-relational databases (PostgreSQL, MongoDB, Redis)
• Experience with SOA/microservices: inter-service communication and dev process
• Strong fundamentals in design principles and patterns (SOLID, event-driven)
• Experience integrating third-party REST APIs: auth, rate limits, retries, webhooks, idempotency
• Experience with async processing / message queues (BullMQ, RabbitMQ or Kafka)
• Experience with a cloud provider (AWS / GCP)
• Understanding of scaling and high-load systems
• Daily use of AI coding assistants (Claude Code, Cursor, GitHub Copilot) for development, refactoring, tests, and documentation
• Ability to write effective prompts and review/validate AI-generated code — quality and security ownership stays with you
• Upper-Intermediate English or higher
  

Tagged as: engineering & technology