Sidebase Open-Source Contributor & Senior TS Dev (f/m/d)

Why Join Sidestream? At Sidestream, we’re building a team of committed, explorative and witty individuals who love pushing boundaries while having fun. Here’s what you can expect: Impactful Work: Contribute to projects that matter, whether it’s digitalizing leading companies, developing open-source tool or innovating with blockchain and AI. Learning & Growth: Gain mentoring from experienced professionals and access to proven processes that prepare you for success in a fast-paced tech environment. Our Culture of Excellence: Embrace modern systems like the Entrepreneurial Operating System (EOS) to deliver outstanding performance and achieve ambitious goals. Collaboration & Fun: Be part of a driven team that values humor, creativity and shared experiences, with regular team events and occasional meetups. Flexibility: Work remotely, from our modern office in Cologne, or a mix of both—whatever helps you thrive. Tasks Your Responsibilities Contribute to Open Source: Write, maintain, and enha