Senior Full Stack Engineer — Ruby on Rails + React/TypeScript

We're looking for a Senior Full Stack Engineer to join an established international B2B SaaS product company. ✍️What you'll work on: - Build features across the stack using Ruby on Rails and React/TypeScript - Build and evolve GraphQL APIs - Develop and maintain integrations with third-party platforms - Own features end-to-end: from technical and product decisions to release and production - Take part in architecture and refactoring decisions - Work with a mature production system and help it grow 👀What we're looking for: - Strong commercial experience with Ruby on Rails - Strong React + TypeScript - Solid PostgreSQL knowledge, including schema design and query optimization - Hands-on experience building and working with GraphQL - Experience integrating third-party APIs - Strong engineering practices: testing, code reviews and documentation - Ability to take ownership and work independently in a distributed team - Languages: English - B2, used for documentation, tickets and company-wide communication Russian — fluent, used for day-to-day communication within the engineering team 👍 Nice to have: Go, Sidekiq or similar background job systems, experience breaking down monolithic applications into services, feature flags, OAuth and social media API integrations. ✅What we offer: - Flexible working hours - 28 days of paid vacation - Regular performance and compensation reviews International B2B SaaS product - Strong product and engineering team Hiring process: Recruiter intro → 3 interviews with the team → offer