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September 21, 2026

Staff Backend Engineer (Node.js/TypeScript)

Senior • Remote

417,978 - 531,972 PLN/yr

Warsaw, MA, Poland

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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