Work at Sempi

Software Engineering Intern

We're seeking a full-stack engineer to join as our first engineering hire. You'll work directly with our technical co-founder to build and scale our platform, with significant input into our technical decisions and architecture.

About Sempi

We're building a platform that makes reselling valuable items simple. Our software lets you sell across multiple marketplaces at once, making reselling easier and promoting sustainability through second-hand sales. We're a small, venture-backed team in Berlin. We bring experience from both successful startups and major tech companies, and we're ready to grow thoughtfully.

What You'll Do

  • Work on real features for our Ruby on Rails application

  • Learn how to write production-quality code

  • Participate in code reviews and technical discussions

  • Contribute to both backend and frontend development

  • Help improve our testing and deployment processes

What You Bring

Must Have

  • Strong programming fundamentals

  • Experience building complete, working software projects

  • Knowledge of web technologies (HTML, CSS, JavaScript)

  • Proven problem-solving skills through personal projects

  • Strong willingness to learn

  • Good English communication skills

Nice to Have

  • Basic understanding of Ruby or Ruby on Rails

  • Experience with any frontend framework

  • Familiarity with Git

  • Basic database knowledge

  • Interest in sustainability and marketplaces

Why Join Us

  • Work on a real product with real users

  • Learn from experienced engineers and founders

  • Access to cool working spaces in the center of Berlin, and fun startup events

  • Potential for full-time role for the right candidate

If you don't check all the boxes but think you'd be a great fit, we'd still like to hear from you.