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September 21, 2026
Staff Backend Engineer (Node.js/TypeScript)
Senior • Remote
417,978 - 531,972 PLN/yr
Warsaw, MA, Poland
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Quick Facts
Role: Staff Backend Engineer (Node.js/TypeScript)
Focus: Backend technical direction, architecture standards, reliability for a live workforce management platform
Description
Own the backend’s technical direction and long-term health as the most senior backend engineer. You will make architectural decisions, set engineering standards, stay hands-on with core abstractions and hard problems, and lead efforts to keep a live, money-handling system reliable as the team grows.
Responsibilities
Own backend technical direction; document architectural decisions
Set standards for service boundaries, data modeling, API design, error handling, and observability
Write code regularly on core abstractions and the hardest problems to establish team patterns
Ensure reliability, performance, and maintainability of the backend
Diagnose and fix structural production issues (slow endpoints, lock contention, fragile migrations)
Help keep the codebase easy for new engineers to ramp up
Break product intent into sequenced technical plans and provide honest effort estimates
Advise senior engineers on hard problems before implementation
Improve testing, release process, review flow, and technical documentation
Requirements
8+ years of professional backend development experience
Several years as the senior technical owner of a production system worked on by other engineers
Strong commercial experience with Node.js and TypeScript
Strong experience with PostgreSQL or other relational databases
Experience designing systems with strict correctness requirements (payments, audit trails)
Experience improving a live production system without resorting to a full rewrite
Daily use of AI coding tools as a core part of your development workflow
Experience advising other engineers on complex technical problems
Ability to explain technical constraints and trade-offs to product and business stakeholders
Availability for at least 3 hours daily overlap with US Eastern Time (EST)
Excellent English communication skills
Benefits
Hands-on senior backend leadership with ownership of architecture, standards, and backend health.
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