UX/UI Developer (m/w/d)

  • Hamburg


We are looking for you as an addition to our Tech team in Berlin, Munich or Hamburg. 1KOMMA5° is building Germany’s largest one-stop-shop for sale, installation and services related to solar, heat pumps, electricity and charging infrastructure. And they are all connected! Be a part of our mission!

Your mission

In Tech we have two main work streams

  • Heartbeat: Building a virtual power plant levering our energy manager “Heartbeat” and evolving the customer experience app around this
  • Operating System for installation companies: Digitisation of operations and processes from ground operations to rooftop installations

At 1KOMMA5°, we seek a highly skilled and experienced UX/UI Developer to join our growing team. As a UX/UI Developer, you will be responsible for creating exceptional user experiences and visually appealing user interfaces across our digital products. Your role will encompass a combination of user research, wireframing, prototyping, and implementing intuitive and responsive designs. The successful candidate will collaborate closely with cross-functional teams, including product managers, developers, and graphic designers, to deliver high-quality digital solutions that align with our business objectives and elevate user satisfaction.

Key responsibilities include but are not limited to

  • As a UX/UI Developer, you will be responsible for the conceptual and visual design of our apps from a user experience perspective
  • You are responsible for the visual redesign and further development of the user interface design of multi-device applications for the Operating System
  • You will also take care of interaction design and the design of usage scenarios and use cases
  • You will also create wireframes, graphical and interactive prototypes, complete user journeys and polished user interfaces
  • You work closely and cross-functionally with product management, our developers and external partners

Your profile

You have

  • a degree or training in interface design, media design, communication design or a comparable field
  • Several years of professional experience in the field of user-centered design
  • You are able to transform complex processes into self-explanatory designs
  • Flair for aesthetics, design and user behavior
  • Conceptual thinking and passion for UX topics
  • Experience working in an agile environment
  • Active interest in web design, technologies and trends
  • Enjoy developing groundbreaking visual projects
  • Enjoy working in a team and taking responsibility
  • Very good written and spoken German and English skills

Bonus points for

  • Interest in climate tech industry


  • The opportunity to travel, work mobile and individually
  • Individualized opportunities for professional development
  • Being part of a global change movement
  • Working in a diverse team with hard workers and real team players
  • Seeing the impact of your work, daily

About us

„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°)