(Senior) Mobile App Engineer (m/w/d)

At GALVANY, our goal is to make climate-neutral living a reality for everyone. We focus on execution – developing concrete, smart solutions and making heat pumps, battery storage, and smart metering easy to access, reliable, and affordable. GALVANY-Tech drives the energy transition through software. We're building an AI-based Operating System for sales, planning, installation and operation of heat pumps and integrated energy systems – from single-family homes to multi-unit buildings, and across our Energy Community as a Virtual Power Plant. We are a profitable green-tech startup and believe that sustainable impact and long-term growth are only possible when grounded in a healthy business model. To implement our ambitious tech roadmap, we secured €10 million in seed funding from Set Ventures and AENU in the spring 2026. Driven by customer value, clarity, and responsibility, we stand for high-quality heating solutions and an environment where people take responsibility and drive lasting impact. The Role As a Mobile App Engineer at GALVANY, you'll build and maintain the mobile applications that put our AI-based Operating System in users' hands. You'll create intuitive, performant experiences for installers in the field and homeowners managing their energy systems – with a strong emphasis on design quality and real-world usability. Responsibilities: - Develop cross-platform mobile apps using Flutter with a focus on performance and user experience. - Collaborate closely with Design to translate Figma specs into polished, native-feeling implementations. - Integrate with backend APIs and ensure reliable data synchronization, including offline scenarios. - Optimize for mobile constraints: battery, network, permissions, and app store guidelines. - Leverage AI tools to accelerate development with quick-prototypes and explore innovative mobile solutions. - Take ownership of features from implementation through deployment and iteration. Tech Stack: Mobile with Flutter; Backend with GoLang and Laravel; Frontend with React, Tailwind, and Shadcn; General tools including Azure, GitHub, Linear, Notion. Requirements - Experience. 4+ years of experience in high-performance environments (e.g. top-tier consulting, fast-scaling startups, or similar). - Track Record. Proven end-to-end responsibility in mobile app development. From ideation to release. - Background. Strong background in relevant fields, e.g. Computer Science, Software Engineering, or similar. - Technical Skills. Strong coding skills with proficiency in Flutter/Dart. Eye for UI detail and experience implementing designs with high fidelity. Fluent in spec-driven, AI-assisted development (e.g. Claude Code). - Mindset. Self-driven problem-solving mindset – no need for micromanagement or specific tickets. - Technical Aptitude. Technical mindset with a passion for understanding systems, data flows, and integrations, coupled with enthusiasm for continuous learning and problem solving. - Language. Fluent in English; German is a plus. Skills and Qualities That Are Important to US - Outcome-Led. You focus on value over volume. You embrace iteration, adapt quickly to new information, and prioritize what moves the needle for business and user. - Systems Thinker. You see the bigger picture. You understand how your work connects to the wider ecosystem – ensuring features contribute to a cohesive, scalable whole. - Pragmatic. You choose the simplest effective path to solve problems – especially by leveraging AI tools. - Customer Champion. You keep the end-user central in all decisions. You seek direct exposure to how customers experience the product. - UI Craft & Polish. You hold a high bar for visual quality, interaction details, and performance. You sweat the small stuff that users notice. - Design Partner. You collaborate closely with Design. You translate intent to implementation and push back constructively on feasibility. Benefits - Strong Growth & High Impact. A unique opportunity to join du