(Senior) QA Engineer - AI-Driven Testing (m/f/d)

About the Position

1KOMMA5° is on a mission to make living on wind and sunlight forever for free a reality. We are building the energy system of the future with Heartbeat AI. If you want to be part of this exciting journey, we are looking for a (Senior) QA Engineer - AI-Driven Testing (m/f/d) to join our Mobile App Platform team.

Responsibilities

• App Platform Quality Ownership: Own the quality strategy of our Flutter apps and testing architecture across our mobile product teams from a platform standpoint, including test strategy, execution, and production monitoring.
• Platform Collaboration & Support: Partner closely with cross-functional mobile product teams to shape quality practices, close testing gaps, and enable teams to ship with confidence.
• Automated Test Suite Management: Grow and maintain our automated test suite (Appium / BrowserStack), keeping it fast, stable, trusted, and focused on critical user journeys.
• Test Infrastructure Health: Keep test infrastructure healthy with minimized flakiness, faster runs, and actionable results for the entire engineering organization.
• Autonomous & AI-Driven Exploration: Create and scale autonomous exploration, intelligent test orchestration, and self-directed testing workflows from scratch to detect product risks before they reach users.

Requirements

• User-Centric Quality Focus: Strong focus on real-world user journeys, edge cases, and product risk rather than relying solely on code coverage metrics.
• Comfortable with Ambiguity: High initiative and problem-solving drive to invent solutions from scratch when no standard playbook exists.
• QA Architecture & Mobile Automation: Extensive experience designing scalable testing strategies and hands-on expertise with mobile automation frameworks (Appium, Flutter integration testing) and cloud device farms (BrowserStack).
• Practical AI & Agentic Workflows: Active experience leveraging AI tools, LLM workflows, and testing agents for autonomous exploration, automated test generation, and defect analysis.
• CI/CD & Platform Enablement: Proven track record of integrating test suites into CI/CD pipelines (GitHub Actions) to deliver fast quality signals and co-creating practices that enable product teams to own quality without sacrificing velocity.
• User-Centric Quality & Communication: Focus on real-world user journeys and risk mitigation over simple coverage metrics, backed by strong English communication skills to guide engineering practices.

Nice to Have

• German language skills
• Experience with energy systems, IoT, or climate tech
• Native iOS/Android or deep Flutter/Dart architecture knowledge
• Track record of navigating ambiguity
• Experience in building testing tools from scratch

We Offer

• Be part of an international, dynamic, and highly motivated team.
• Accelerate the "energy transition" and have a direct impact on our climate.
• Work with and learn from other super-smart colleagues.
• Enjoy direct contact with core decision-makers.
• Best chances of entering full-time in one of Europe’s most thriving scaleups.
• Work remotely (Germany-wide), with offices in Hamburg, Berlin, or Munich.
• Create a healthy work-life balance and enjoy all the benefits of the EGYM Wellpass.
• Benefits and discounts with Futurebens.
• Flexible job bike leasing to do something good for the environment.

About the Company

At 1KOMMA5°, our vision is to accelerate CO2 neutral life for all! We created an easy one-stop-shop to buy and install solar, charging stations, and heat pumps, with the purpose of liberating all European homes from the shackles of fossil fuels. With Heartbeat, we make clean energy smarter. Connecting our customers into one powerful clean energy operating system to enable flexible tariffs and to ultimately follow the rhythm of wind and sun! - Philipp Schröder (CEO 1KOMMA5°)