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K4 Tech Solutions

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Backend Engineer (Node.js / NestJS)

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Description

Compensation: $40k – $60k • No equity

We hire backend engineers continuously and would rather meet strong people before a project needs them. There may not be an opening the week you apply — we'll tell you honestly where we stand and get in touch when there's a match.

About the work We build fintech products: neobanks, PCI DSS-compliant payment platforms, banking integrations and SaaS tools. Backend is the centre of most of them — money moves through the code you write, so correctness matters more than speed.

What you'd do

  • Design and build APIs for mobile and web clients
  • Integrate payment providers and banking systems, handle webhooks and reconciliation
  • Own services end to end: schema, business logic, tests, deployment
  • Take part in architecture decisions and give the estimates we commit to

What we look for

  • 4+ years with Node.js and TypeScript, ideally NestJS
  • Solid relational database skills — PostgreSQL, query design, migrations
  • Experience with third-party integrations; payment or banking is a strong plus
  • Comfort working async in a small team without layers of process

How we work Remote only, Europe, CET/EET overlap. Weekly demos, clear deadlines, written communication by default. Under twenty people, so you'll see the whole product rather than a slice of it.

Hiring process Intro call → technical conversation about your actual experience, no whiteboard algorithms → decision. We reply to every application.

Skills

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See also

Backend jobs by country — openings, pay and top skills →