Working Student Data Engineer (m/w/d) Berlin, Hamburg, Munich

We are looking for you to join our tech team in Berlin, Munich, or Hamburg. 1KOMMA5° is creating Germany's largest one-stop-shop for the sale, installation, and servicing of solar panels, heat pumps, electricity solutions, and charging infrastructure. And the best part? They are all interconnected!  One of our key tech products, our energy manager "Heartbeat," is central to our mission. It enhances the user experience through our app and ensures the cheapest and cleanest energy for our customers. Additionally, it serves as a core component of our vision to build a virtual power plant.

Become a part of our mission!

As a Working Student Data Engineer in our cross-functional B2C team, you'll play an important role in shaping data solutions that enhance our Heartbeat App and its underlying backend services. You’ll collaborate with engineers, product owners, designers, and QA specialists to help address critical business and customer questions using data. Your day-to-day will involve creating robust data ingestion pipelines in Python, writing advanced SQL queries for analysis, and ensuring smooth data flow throughout our systems. You will contribute to empowering our users by delivering transparent, actionable data insights that support smooth operations.

Key responsibilities include but are not limited to:

• Analyze measurements, pricing, and system data to calculate meaningful insights

• Write audit SQL queries to maintain high data quality standards

• Collaborate with product managers, engineers, designers, and developers to deliver data-driven solutions

• Build, implement, and maintain data pipelines on Google Cloud Platform (GCP)

• Take full ownership of data flows across our systems, ensuring reliability and performance

Technologies you'll work with:

• Python

• SQL

• You are enrolled at a university and can commit to 15-20 hours per week

• You’re studying Computer Science, Data Engineering, or a similar field

• You have experience writing SQL queries and working with Python

• You enjoy problem-solving, analyzing data, and deriving insights

• You enjoy writing clean, maintainable, and reusable code that’s easy to test

• You are excited to contribute to improving user experience

• You have a team-oriented mindset, like working in agile environments, and value close collaboration with your teammates

• Strong English communication skills (both written and spoken) are required; German is a plus

Bonus points for:

• Google Cloud Platform (e.g., Cloud Run, PubSub, CloudSQL, Firestore, BigQuery)

• Datadog

• Terraform

• GitHub Actions

• You are part of a dynamic and highly motivated team with people who have proven that they can make things happen and move companies forward

• With your work, you accelerate the "energy and mobility transition" and make a concrete contribution to the sustainable transformation of our energy infrastructure

• You move in flat hierarchies and have direct contact with the managing directors as well as short decision-making paths

• Work with and learn from other skilled engineers

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

• See the direct impact of your work on a rapid-scaling user base

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