🌐 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 47+ employees, with 47% being female and from 16+ nationalities, and steadily growing. Having raised of over €40 M in total, we are looking for passionate people to join us on our mission! 🚀

🇩🇪 Wir haben eine klare Mission: Wir bauen Europas führende Plattform für Energiemanagement, um faire und saubere Energie für alle zugänglich zu machen. ⚡

Unser Team ist vielfältig – wir sind über 47 Personen aus mehr als 16 Nationalitäten, mit einem Frauenanteil von 47 %. Und wir wachsen weiter!
Mit über 40 Mio. € an Finanzierung suchen wir nach motivierten Menschen, die gemeinsam mit uns die Energiezukunft gestalten wollen. 🚀

Your Mission

We are looking for a QA Engineer (Mid-level) to join our team. You’ll be a key member of our cross-functional product squads, ensuring the delivery of high-quality, user-focused software across our mobile and web platforms. As part of a cross-functional team, you will play a crucial role in upholding our commitment to quality by supporting our tech team in identifying and addressing software defects.

Your contributions will help ensure that our product meets the highest standards of performance, reliability, and user satisfaction.

You can view our full tech stack here.

• 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 that 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.

What you will be working on

• Own mid-sized QA initiatives and lead test planning within your squad

• Initiate, Design and maintain automated UI and API test suites

• Write robust test cases covering edge cases, failure paths, and key user flows

• Perform manual and automated testing for new features and releases

• Collaborate with developers and product managers to scope QA efforts and identify risks early

• Suggest process improvements and help resolve recurring quality issues

• Participate in sprint planning and kick-offs, contributing test strategies and timelines

• Support release monitoring using observability tools and metrics

• Mentor other QA team members through pairing, reviews, and documentation

• Share knowledge and help foster a strong, collaborative QA culture

What we're looking for

• 3+ years of experience in software QA, across both manual and automated testing

• Skilled in writing and maintaining test automation for mobile applications

• Solid understanding of SDLC, Agile practices, and the testing pyramid

• Proficient in API testing (e.g., Postman) and testable code practices

• Familiar with SQL and database testing, especially PostgreSQL

• Confident with Git, CI pipelines, and mobile test automation frameworks

• Strong communication and collaboration skills

• Ability to assess QA risk in terms of business impact and communicate clearly

• Eager to mentor, learn, and contribute to customer-focused product development

Nice to have

• Experience using observability tools for post-release validation

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, in case you prefer working in the office.

• Relocation package: If you want to move to Germany, we offer a 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’re Germany’s fastest-growing digital green energy provider and a Certified B Corp™ , driving the energy transition by making renewable energy more accessible and inclusive.

How? Through variable tariffs, dynamic pricing, smart EV charging, heat pump and solar optimization, and Germany’s first virtual power plant: NeoGrid™.

At Ostrom, you’ll work in a dynamic, open environment where you can be yourself, take on challenges, and grow both personally and professionally.

💬 Stay In The Loop: We believe in transparent communication — from weekly town halls and quarterly updates to regular retrospectives. Got feedback or an idea? We’re all ears.

🤝 Work Together, Celebrate Together: We thrive on collaboration. Wins are shared and so are the celebrations from Friday happy hours to team trips and company events.

🌍 Work Your Way: Whether you prefer the office, your home desk, or a sunny spot in Sardinia — you work where you work best.

🚀 Learn By Doing: We grow together with personal development paths, learning budgets, and regular knowledge-sharing sessions. Try things out, learn along the way, and keep moving forward.

🇩🇪 Über Uns

Wir sind der am schnellsten wachsende digitale Ökostromanbieter mit B Corp™ Zertifizierung in Deutschland – und treiben die Energiewende aktiv voran. Unser Ziel: Erneuerbare Energie für alle zugänglich und inklusiv machen.

Wie? Mit variablen Tarifen, dynamischem Strompreis, Smart EV Charging, Optimierung von Wärmepumpen und Solaranlagen sowie Deutschlands erstem virtuellen Kraftwerk: NeoGrid™.

Bei Ostrom arbeitest du in einem offenen, dynamischen Umfeld, in dem du du selbst sein kannst, Herausforderungen annimmst und dich kontinuierlich weiterentwickelst.

💬 Immer im Bilde: Transparente Kommunikation ist unser Standard – von der wöchentlichen Townhall über quartalsweise Updates bis zu regelmäßigen Retros. Deine Ideen sind gefragt – Feedback funktioniert bei uns in beide Richtungen.

🤝 Teamspirit zählt: Erfolge feiern wir gemeinsam – und erreichen sie durch echte Zusammenarbeit. Ob bei der Friday Happy Hour, Team-Retreats oder Company Events: Zusammen macht’s mehr Spaß.

🌍 Du arbeitest, wie’s dir passt: Ob Büro, Homeoffice oder Strand in Sardinien – du entscheidest, wo du am produktivsten bist.

🚀 Einfach mal ausprobieren: Bei uns ist Weiterentwicklung kein leeres Versprechen. Wir lernen gemeinsam – mit individuellen Lernpfaden, Fortbildungsbudgets und regelmäßigen Wissens-Sessions im Team. Probier’s aus und wachse mit uns.