Senior Node.js Engineer — Enterprise SaaS, Remote

Flosum; Polska; Remote; PLN 180,000 - 320,000; Full time

Benefits offered by this job

Remote-first

Competitive pay

Ownership culture

Direct leadership access

Enterprise challenges

Job summary

Flosum is seeking senior Node.js developers to own significant parts of our architecture and deliver production-grade code used by Fortune 500 customers in regulated industries. You will work directly with engineering leadership, product managers, and the CEO in a remote-first, high-impact environment.

Ideal candidates have 5+ years of professional Node.js experience, deep TypeScript knowledge, and strong REST/API security expertise.

Qualifications

• 5+ years of professional Node.js development in production environments.
• Deep experience with TypeScript in production codebases.
• Strong command of RESTful API design and authentication patterns (OAuth 2.0, JWT).
• Proven experience with SQL and NoSQL databases and data modeling.
• Proficiency with containerization (Docker) and cloud services (AWS/GCP/Azure).

Responsibilities

• Develop high-performance Node.js backends and APIs for enterprise SaaS.
• Build scalable TypeScript codebases with strong typing in production.
• Collaborate with engineering leadership, product managers, and the CEO.
• Implement security, reliability, and performance best practices for regulated environments.

Skills

Node.js

TypeScript

REST APIs

OAuth 2.0

JWT

Security

Tools

Docker

Git

CI/CD

AWS

GCP

Azure

Job description

Flosum is seeking senior Node.js developers to own significant parts of our architecture and deliver production-grade code used by Fortune 500 customers in regulated industries. You will work directly with engineering leadership, product managers, and the CEO in a remote-first, high-impact environment.

Ideal candidates have 5+ years of professional Node.js experience, deep TypeScript knowledge, and strong REST/API security expertise.