Senior Typescript Developer

Sidestream · Cologne

Remote May 8, 2026

Job Summary

Join Sidestream as a Senior TypeScript Developer to work on impactful projects, gain mentoring from experienced professionals, and collaborate with a driven team. You will lead fullstack development using TypeScript, Nuxt3, and Vue, mentor junior developers, and drive innovation by proposing new technologies. We seek someone with deep expertise in TypeScript or JavaScript, full-stack confidence, leadership skills, craftsmanship in writing high-quality code, a pragmatic approach, and strong communication skills in English.

Key Responsibilities

Work on fullstack development using TypeScript, Nuxt3, and Vue.
Lead projects and collaborate with product managers in agile teams.
Mentor junior developers to help them level up their skills.
Drive innovation by proposing and implementing new technologies or methodologies.

Who This Role Suits

Deep expertise in TypeScript or JavaScript with a solid understanding of frameworks like Nuxt and Vue.
Comfortable working on both frontend and backend projects, taking ownership of the entire stack.
Ability to independently complete projects, enjoy mentoring less experienced developers, and focus on writing high-quality code.

Tips to Apply

Share 2-3 sentences about why you're excited about the role and what makes Sidestream appealing to you.
Include links to projects you've worked on to showcase your skills and contributions.
Be prepared for a real-life coding challenge during the application process.

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Full Job Description

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

Fullstack Development: Build robust applications using TypeScript, Nuxt3 and Vue.
Lead Projects: 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.
Drive Innovation: Propose and implement new technologies or methodologies to keep Sidestream at the cutting edge.

Requirements

What You Bring

Deep Expertise: You have advanced experience in TypeScript or JavaScript and a solid understanding of frameworks like Nuxt and Vue.
Full-Stack Confidence: You’re comfortable working on both frontend and backend projects, taking ownership of the entire stack.
Leadership in Action: You can independently complete projects and enjoy mentoring less experienced developers to help them grow.
Craftsmanship: You take pride in writing high-quality, peer-reviewed, and production-ready code that makes a real impact.
Pragmatic Approach: You focus on doing the right things, the right way, efficiently and effectively.
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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Skills

javascript typescript vue go java fullstack frontend backend ux ui ai remote Remote Software Development

Frequently Asked Questions

This Senior Typescript Developer position is suitable for Mid-level professionals. Sidestream is looking for candidates with proven experience in the key skills mentioned, typically 2-5+ years depending on the specific requirements.

Yes, this is a fully remote Senior Typescript Developer position. You can work from anywhere with a reliable internet connection.

Key skills for this Senior Typescript Developer position include: javascript, typescript, vue. Having a strong foundation in these areas will make your application competitive. Experience with related tools and frameworks is also valuable.

To apply, click the 'Apply' button on this page, which will direct you to Sidestream's application portal. Have your resume, portfolio (if applicable), and a compelling cover letter ready.

Salary ranges vary based on experience and location. Check the job posting for specific compensation details, or research similar Senior Typescript Developer positions in your area.

Highlight relevant experience with javascript, typescript, vue. Include specific projects, achievements, and measurable results. Tailor your resume to match the job description, focusing on how your background aligns with Sidestream's needs.

Most hiring processes take 2-4 weeks from application to offer. This may include initial screening, technical assessments, interviews, and background checks. Sidestream will keep you informed throughout each stage.