1KOMMA5°
Become a part of our mission and learn more about our Product & Tech team!]]> Deine Position transform the business of selling renewable technologies at scale. With our core marketing automation and CRM platforms, we redefine growth processes to accelerate the global energy transition empowering private homes and small businesses to adopt sustainable energy solutions.

As a Senior Software Engineer at 1KOMMA5°, you will take technical ownership of key systems and features, driving architectural decisions and ensuring scalability, reliability, and performance. You’ll collaborate closely with other engineers, product managers, and stakeholders to shape our technical direction and deliver high-impact solutions. Beyond writing great code, you’ll mentor teammates, champion engineering excellence, and help evolve our development and deployment practices to the next level.

Our Stack:

Next.js/TypeScript for frontend applications & NestJS/TypeScript for backend applications
Infrastructure as code, deployment to Google Cloud, observability with Datadog

]]> Dein Profil Key responsibilities include but are not limited to:

Contribute as a senior full-stack engineer within a team of self-driven software developers
Design, build, and maintain business-critical systems across the stack. From scalable backend services to performant, user-friendly frontends
Translate complex and loosely defined business problems into clear, actionable technical solutions
Champion clean architecture, component reusability, and maintainable UI patterns using modern frameworks (e.g. React, Next.js, or similar)
Drive experiment-driven innovation and uphold strong engineering practices in testing, CI/CD, observability, and code quality
Continuously improve developer experience by reducing technical debt, automating workflows, and documenting key decisions and operational processes
Operate effectively in an asynchronous, outcome-oriented environment, managing your work autonomously and maintaining clear communication through documentation and structured updates
Contribute to lightweight project management by defining milestones, ensuring technical feasibility, and aligning engineering work with product goals

You have:

Extensive experience writing maintainable, reusable, and testable code in TypeScript, with strong skills in both frontend frameworks (e.g. React, Next.js) and backend technologies (e.g. Node.js, NestJS, or similar)
Strong understanding of API design, data modeling, and system integration (RESTful or GraphQL)
Proven ability to own features end-to-end, from UX and architecture to deployment and monitoring
A pragmatic, product-focused mindset that balances technical excellence with delivering customer value
Curiosity and initiative to explore new tools and methods that improve product quality and engineering efficiency
Excellent written and spoken English; German is a plus
Residency in Germany

]]> Benefits

You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen

With your work, you accelerate the "energy transition" and hence have a direct impact on our climate

Work with and learn from other super-smart colleagues

You will enjoy direct contact with core decision-makers

You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups

You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich

Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass

Benefits and discounts are yours with Futurebens

Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time

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Senior Full-Stack Software Engineer (m/f/d)