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Senior Software Engineer API (f/m/d) - Node.js, SQL

Instaffo · Berlin

Berlin · On-siteFull-TimePosted Sep 7, 2026

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Job description

You are interested in the position as Senior Software Engineer API (f/m/d) - Node.js, SQL at smartclip Europe GmbH ?

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Requirements Please note that this position requires work authorization for Germany .

Language: English - Fluent (C1) Core Competencies:

  • Node.js & TypeScript Mastery: You can write clean, maintainable, and type-safe code that thrives in a production environment.
  • Data Architect Mindset: You don't just write queries; you understand how to design efficient database schemas and optimise them for performance (PostgreSQL).
  • The Art of Persistence: You know how to leverage ORMs effectively, understanding exactly when they help and when they get in the way.
  • Quality Obsession: Automated testing (jest/mocha) isn't a chore for you—it's the only way to ship with confidence.
  • DevOps Basics: You are comfortable with Docker, Git, and the general flow of modern CI/CD pipelines.

Bonus Skills (The Power-Ups):

  • Experience navigating the AWS ecosystem or monitoring tools like Grafana, Prometheus, or Graylog.
  • A track record of mentoring peers or leading the technical direction of a project.
  • A degree in Computer Science or a self-taught journey evidenced by a strong portfolio.

Activities We are looking for a backend specialist who loves the intersection of stability and scalability. Your focus will not be on a title, but on the impact of your code. You will:

  • Bridge Systems: Build and maintain robust microservices that ensure seamless communication between internal and external environments.
  • Drive Implementation: Take full ownership of features from a raw idea to a production-ready deployment.
  • Evolve the Architecture: Contribute to our technical roadmap by questioning the status quo and proposing scalable solutions.
  • Secure the Flow: Implement and refine authentication and authorisation flows (OAuth, Auth0) to keep our systems safe and accessible.
  • Optimise the Core: Ensure our data layer is lean and fast, applying deep knowledge of SQL and PostgreSQL to solve complex data challenges.

Team

  • Ownership over tickets: You’re trusted with real responsibility, not just tasks. No unnecessary bureaucracy, no micromanagement – we rely on you to take things forward.
  • Build > Talk: We test what works – not what sounds good. Fail fast, learn faster.
  • High standards, low ego: We take our work seriously, but not ourselves. Direct feedback, honest collaboration, no drama.
  • Stay sharp: Hackathons, conferences, community – we invest in your growth and keep you at the cutting edge.
  • And yes – the fundamentals are covered too: 30 days of vacation + Dec 24 & 31 off, Smart Fridays (4 days week possible), mobility (Germany ticket & JobRad), sports & health offerings, mental health support, corporate benefits, RTL+ access, and more.

About The Company About smartclip smartclip is the adtech development unit of RTL Group — Europe’s leading free-to-air broadcaster group. Our proprietary advertising technology is custom-built for the needs of European broadcasters and publishers — enabling media owners to implement smarter monetisation strategies. We are committed to delivering the most innovative ad experiences spanning in-stream, out-stream, addressable TV, connected TV, audio, and gaming — ultimately empowering brands with true cross-screen storytelling opportunities on all devices.

For more information: Please visit www.smartclip.tv and follow us on LinkedIn.

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