Backend Engineer

Back-end Engineer (AWS, Node.js)

2 positions · Remote, based in Hungary · Start: December 2026 · Initially 5 months, with extension possible

About the project

Join an AI-driven fintech product team. Our client, a UK-based fintech company, is building an AI-powered analytics product that helps businesses optimize spending and budget planning. The product is moving from alpha stage to the market launch.

You will work full-time with the client's in-house product team, in English, during UK business hours (09:00–17:30 UK / 10:00–18:30 CET).

Your role

You build the product's cloud back end on AWS.

What you bring

• 3+ years (mid-level) or 5+ years (senior) of back-end development
• Node.js (TypeScript a plus) in production
• AWS, especially Lambda and serverless architecture
• PostgreSQL and/or DynamoDB
• REST APIs, testing, CI/CD, code reviews
• Fluent English (B2+)

Nice to have: fintech or document-processing experience, infrastructure as code (CDK/Terraform)

Engagement

• Contract: fixed-term project, initially 5 months, with a real chance of extension
• Preferred: fixed-term employment; optional sole trader development contract - TBD;
• Location: 100% remote from Hungary. You must already have the right to work in Hungary or the EU; we cannot offer visa sponsorship or work permits.

• Start: Early December 2026. Tell us your earliest date.

What we offer

• Competitive salary, paid monthly, with no gap between projects if extended
• Sole trader engineers - day rate only
• Modern stack and real product impact: you ship features used by finance teams in the UK and EU
• Client-approved AI coding assistant license provided with applicable policy
• Fast process: one screening call, two client interviews (IT/Rech), decision within a week
• A stable partner: Chronos Systems Hungary (part of CoberonChronos Group), founded in 1999, ISO 9001 and ISO/IEC 27001 certified
• Next projects: when this one ends, you get first pick of our upcoming engagements