We seek a highly skilled Senior Backend Software Engineer to join our growing tech team. 1KOMMA5° is building Germany's largest one-stop-shop for sale, installation, and services related to solar, heat pumps, electricity, and charging infrastructure. And they are all connected! Be a part of our mission!

As a member of the B2C domain, you will build a virtual power plant leveraging our energy manager "Heartbeat", and continuously ship innovative energy market solutions to our customers.

You will be responsible for developing scalable, robust backend services that enable seamless integration of our energy management solutions with various energy markets.

Key responsibilities include:

• Work collaboratively with product managers, data engineers, and data scientists to understand problems, support discoveries, and create solutions our customers love

• Build and optimize backend services for VPP operations and energy market integrations

• Design and implement APIs and abstraction layers for seamless communication between different components of our energy market integration solutions

• Optimize backend services for scalability and support for a large number of connected users

• Create, implement, evaluate, and deploy software solutions to solve complex problems in a simplified way

• Foster a culture of experiment-driven innovation within the team

• Promote teamwork and successful project execution

• Continuously improve developer satisfaction by avoiding/reducing tech debt, automating processes, and good documentation

• Work across your boundaries and interact in close collaboration with our stakeholders and other teams

Technologies you will work with include:

• TypeScript, NestJS

• Google Cloud Platform (Cloud Run, Cloud Functions, PubSub, CloudSQL, Firestore, BigQuery)

• Domain-driven design architecture

• Datadog

• Terraform

• GitHub Actions

The successful candidate will have:

• Proven experience in developing scalable backend solutions with TypeScript from several past projects

• Competence in building virtual power plant infrastructure, including the integration into energy markets (day-ahead, intraday, balancing services, etc).

• Hands-on experience working with interfaces in the context of energy services (e.g., smart meters, energy optimization, load balancing).

• Broad knowledge of various architectural patterns and experience implementing them with CI/CD using GitHub Actions and cloud infrastructure (ideally GCP)

• Passion for maintainable, documented, reusable, and testable code

• A finger on the pulse of software engineering trends and industry best practices

• An agile and product-oriented mindset and you consider yourself a team player

• Very strong written and spoken English skills, German is a plus

Bonus points for:

• Experience with IaC (ideally Terraform)

• Experience Python in the context of Data Engineering or Machine Learning

• Experience with IoT applications for grid balancing and demand response

We are an ambitious and dynamic company with a talented team. We require our engineers to be imaginative, enthusiastic, and willing to tackle new challenges as we strive to provide everyone with renewable energy technologies.

• 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