We are on the mission to build Europe’s leading energy management platform to provide fair, clean energy to everyone. ⚡

We’re a diverse team of 37+, with 60% being female and from 14+ nationalities, and steadily growing. Recently raising >18M USD in our Series A funding round, we are looking for passionate people to join us on our mission! 🚀

We are looking for a Fullstack Engineer to join our team. You would be joining the Tech team which currently is made up of fourteen people, ten developers, and four in Product. As part of a cross-functional team, you will be focused on projects related to new business alongside projects to reduce our OPS load, ensuring we can grow faster with a smaller team.

You can view our full stack here.

What you'll be keeping busy with

• Design and implement backend and frontend solutions from scratch.

• Involved in tech-stack decisions to choose the best frameworks, tools and processes for our team.

• Develop a scalable renewable energy platform with cutting-edge technologies

• Build the integration of our new product lines such as smart meter, dynamic pricing, electric vehicle (EV) charging and more.

Your profile

• Minimum 3+ years FullStack development.

• Experience with Typescript and/or Python.

• Experience with React.

• Experience designing APIs.

• Experience with Relational Databases.

• Experience in high code quality, unit testing, integration testing and E2E testing.

• Comfortable with greenfield projects.

• Good communication skills and fluency in English.

Nice to have

• Experience with AWS services.

• Working with CI/CD automation workflows (Docker, GitHub Actions).

Why us?

• Environmental Impact: Each customer who switches to Ostrom on average helps offset 1.5 tons of CO2 emissions per year compared to the average German energy mix

• Flexibility: We offer a hybrid work model with a dog-friendly office in Berlin, Mitte if you prefer working in the office.

• Relocation package: If you want to move to Germany we offer visa and relocation support

• Trust-based Team: A truly flat hierarchy and transparent company culture, where everyone’s voice matters

• Personal development: You receive an annual growth budget, encompassed with frequent development 1:1’s and development cycles held twice a year

• Benefits: From monthly team events to discounted gym membership, ticket for public transport, e-Moped or e-Bike via Dance, Futurebens, and monthly vouchers

About Us

We are on the mission to build Europe’s leading energy management platform to provide fair, clean energy to everyone. As the fastest growing green and digital Certified B Corp™ energy provider in Germany, we are driving the energy transition making renewable energy more accessible and inclusive. We do this by offering variable tariffs, dynamic pricing, Smart EV Charging, smart HVAC, solar, and more!

At Ostrom you will work in a dynamic and open environment, where you have space to be yourself, take on challenges, and grow.

• Be in the know: Open and transparent communication, from our weekly town hall, quarterly company-updates, to retrospectives. Share your ideas — feedback goes both ways!

• Collaboration and connection: Success is shared and collaboration gets us there. Success is also best celebrated together! So join in on our Friday happy-hour, team and company events.

• You do you: Flexibility ensures everyone can work where is best for them. Office goer? Awesome. Working from home? Awesome. Working from Sardinia? Jealous.

• Try it: Our mindset is we are learning together, with personalized development pathways, learning budgets, and company-wide knowledge sharing sessions. Give it a go and learn along the way.