Senior Backend Engineer (Node.js / NestJS) – Greenfield Product

Castle Tech GmbH

Remote regions

Brazil

Benefits

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Key Responsibilities:

  • Build scalable backend services, design architecture, and own features from concept through deployment.
  • Collaborate with frontend engineers and product managers to turn ideas into reliable, scalable systems.
  • Mentor engineers, contribute to technical decision-making, and improve team standards and productivity.

AI-Augmented Engineering Approach:

  • Actively use modern AI tools to improve development speed and quality while maintaining strong engineering judgment.
  • Write effective prompts, evaluate AI output, and explore AI-driven workflows as a tool to enhance engineering.

Required Skills and Contract Details:

  • Must have 5+ years backend experience with TypeScript, Node.js, NestJS, and scalable architecture design.
  • Contract duration is 9-12 months, fully remote from Brazil with overlap for European business hours (CET/CEST).
  • The role requires strong communication in English and experience with relational databases, Git, CI/CD, and Docker.

Castle Tech GmbH

Castle Tech GmbH is building a new standalone product from the ground up. It is a European tech company that operates with a remote-first, collaborative, and modern engineering culture.

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