You will help 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.

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

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

Senior Full-Stack Software Engineer

Key skills