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Backend DevelopmentOnsite

Backend Software Engineer (Part-Time)

pubGENIUS - Startup

Berlin, Deutschland, ๐Ÿ‡ฉ๐Ÿ‡ช GermanyPart-time - Mid level (2-4 years)0 applicantsCloses Jun 14, 2026

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Job description

Role overview

pubGENIUS, a React.js and Next.js development agency and ad tech startup based in Berlin, is seeking a backend developer with strong Node.js and AWS expertise. You will build and scale backend services, design event-driven systems, and work on real client products and internal systems for clients in the US and Europe. This is a project-based, part-time role with a focus on DeFi, fintech, and healthcare industries.

The ideal candidate will collaborate with cross-functional teams to deliver high-quality, scalable solutions while maintaining a strong focus on technical excellence and innovation.

Responsibilities

  • Build and scale backend services using Node.js and TypeScript
  • Design and implement event-driven systems
  • Collaborate on client-facing products and internal systems

Requirements

  • Proficiency in Node.js and TypeScript
  • Experience with AWS cloud infrastructure
  • Strong backend development skills

Benefits

  • Work on real client projects in DeFi/fintech/healthcare
  • Flexible part-time project-based schedule
  • Opportunities to work with cutting-edge AI/web technologies

Keywords

Node.jsTypeScriptAWSevent-driven systemsbackend development