Sidestream

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

Cologne, Germany remote Mid Salary not listed
remote Mid level Technology & IT Curated
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About the role

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 enhance open-source projects like Sidebase and actively engage with the developer community.

Community Engagement: Address issues, create documentation, and develop a vision for open-source initiatives.

Fullstack Development & Technical Lead: Build robust applications using TypeScript, Nuxt3 and Vue. Collaborate with product managers to conceptualize, architect and implement projects in agile teams.

Mentor and Guide: Help junior developers level up their skills through mentoring and collaborative projects.

Requirements

What You Bring

Open-Source Enthusiast: You have experience contributing to open-source projects and actively engaging with the community.

Tech-Savvy: You’re proficient in TypeScript or JavaScript and have a solid understanding of frameworks like Vue or React.

Modern Tech Explorer: You enjoy working with cutting-edge technologies like Nuxt 3 and Kubernetes, staying ahead of the curve.

Craftsmanship in Code: You take pride in writing clean, composable, and peer-reviewed code that meets high-quality standards.

Passionate Collaborator: You’re excited about shaping the future of open-source and love working with others to bring ideas to life.

Hands-On Problem Solver: You’re open to a real-life coding challenge during the application process. We value developers who enjoy rolling up their sleeves and writing great code, not just technical managers.

Strong Communicator: Your can communicate great in English (and German is a bonus).

No cover letter required! Instead, share 2-3 sentences about why you’re excited about this role and what makes Sidestream appealing to you. You can also include links to projects you’ve worked on to give us an impression of your skills and contributions.

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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Javascript Project Management Writing Sidebase Open Mid level

Likely questions

  1. Tell us about work you have done that is close to the Sidebase Open-Source Contributor & Senior TS Dev (f/m/d) role.
  2. How would you approach your first 30 days at Sidestream?
  3. Which of Javascript, Project Management and Writing have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with Javascript, Project Management and Writing.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Sidebase Open-Source Contributor & Senior TS Dev (f/m/d) role because I can bring practical experience in Javascript, Project Management and Writing, learn the team quickly, and contribute to the outcomes Sidestream needs from this hire.

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