About the Role
We are looking for an AI-native designer working student to embed directly into our B2C mobile app team. You won't be doing side tasks; you'll be shaping our flagship consumer product, the Heartbeat app. You can onboard and ideate quickly on complex technical energy concepts, prototype fast, and you've already figured out how to use AI as a force multiplier in your design workflow. This role sits at the intersection of craft and impact. You'll own the full design loop — from shaping the problem, to shipping polished and production-ready app experiences.
What You'll Be Doing
- Own end-to-end design for core app features — from discovery to delivery.
- Leverage AI to enhance every step of the design process.
- Elevate the product experience - you can take things from good to excellent.
- Run effective user research — interviews, usability tests, and surveys.
- Partner closely & proactively with PMs, engineers, and data scientists.
- Synthesise complex data into simple, elegant product decisions.
- Advocate for the user in a fast-moving, technical environment.
- Tools: Figma, Cursor, Notion, Linear.
- Skills: AI-First Design, Prototyping, User Research, UX Process, Data Visualization, Mobile App Design.
What You'll Bring
AI native — you use AI tools daily in your design process and can show us the work.
Block-shaped — equally strong and curious in UX process, visual design, UI craft, and cross-functional collaboration.
End-to-end ownership — you've taken features from 0 to 1, from messy problem statement to shipped product.
Mobile app design fluency — you’re proficient in mobile app design patterns.
High agency — you spot gaps and fill them without being asked.
Builder mindset — you care about things being made, not just imagined.
Excellent communicator — you bring clarity and efficiency to verbal & written communication; our working language is English; fluency in German is a big plus.
Compensation & Benefits
- Part-time.
- Remote (Germany-wide), with offices in Hamburg, Berlin or Munich.
- Part of an international, dynamic, and highly motivated team of people who have proven to make things happen.
- Direct impact on the climate by accelerating the "energy transition".
- Work with and learn from other super-smart colleagues.
- Direct contact with core decision-makers.
- Best chances of entering full-time in one of Europe’s most thriving scaleups.
- Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass.
- Benefits and discounts via Futurebens.
About 1KOMMA5°
- 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.
- We pursue a clear vision: Living on wind and sunlight forever for free.
- We are building the energy system of the future with Heartbeat AI, bringing together regional craftsmanship and scalable software.
- We don't think of solar, batteries, heat pumps, and e-mobility as isolated components, but control them as an intelligent, integrated overall system in our virtual power plant.
- Our system is directly connected to the electricity market – in real time, fully automated.
- By 2030, our goal is to transition 1.5 million households to renewable energies.
- Over 2,000 people are working towards this every day, at more than 80 locations worldwide, from Finland to Australia.