1KOMMA5° is building Germany’s largest one-stop-shop for sale, installation, and services related to solar, heat pumps, electricity, and charging infrastructure.
The company is transforming the business of renewable technology installation, focusing on streamlining ground operations and rooftop installation to speed up the energy transition in private homes and small businesses.
As a Senior Backend Software Engineer, you will be part of a cross-functional team alongside frontend and backend engineers, product managers, and UX/UI developers.
You will help build a self-organized tech team responsible for developing, deploying, and running solutions that contribute to work streams.
Cloud Architects and SREs will support you in delivering and running software in a secure and reliable way.

Build and shape a business-critical application.
Create, implement, evaluate, and deploy software solutions to solve complex problems in a simplified way.
Lay the foundation and architecture for lightweight, flexible, and reliable application setups to scale globally.
Foster a culture of experiment-driven innovation within the team.
Promote teamwork and successful project execution.
Improve developer satisfaction by avoiding/reducing tech debt, automating as much as possible, and documenting decisions, runbooks, etc.
Work across boundaries and interact in close collaboration with stakeholders and other teams.

Proven experience in developing scalable software solutions with TypeScript (NestJS / Node.js) from several past projects.
Experience with React, Vue.js, Node.js, and Next.js in large-scale applications is a clear plus.
Broad knowledge of various architectural patterns and experience implementing them with CI/CD using GitHub Actions and cloud infrastructure (GCP/Vercel).
Experience working in a cross-functional team being responsible for the full software development lifecycle.
Passion for maintainable, documented, reusable, and testable code.
Proficient spoken and written English skills; German is a plus.
An agile and result-oriented mindset with a team player attitude.
Interest in human-centered software development.

Be part of a young, dynamic, and highly motivated team with proven track records.
Support the “energy and mobility transition” and contribute to the sustainable transformation of the energy infrastructure.
Work in a fast-growing company with significant development potential.
Enjoy flat hierarchies and direct contact with managing directors, as well as short decision-making paths.
Work with and learn from skilled engineers and attend conferences and meetups.
Have an immediate impact on the transformation of energy markets towards renewable energies.
Take responsibility for independent work and projects.
Work remotely (Germany-wide), with offices in Hamburg, Berlin, or Munich.
Enjoy a healthy work-life balance and the benefits of the EGYM Wellpass.

Senior Backend Software Engineer – TypeScript (m/f/d) Full Time

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