1
Principal Software Engineer (m/f/d)
Contract type
Ongoing
Work mode
Remote · Germany
Experience
Senior · 5+ years
Job description
A senior technical leadership role shaping 1KOMMA5°'s software architecture and engineering strategy, aligned with product management and driving the organisation's shift to agentic engineering. The role reports directly to the CTO.
At a glance
- Work mode
- Remote · Germany
- Languages
- English, German
What you'll do
- Shape the organisation's technical strategy and innovation efforts
- Accountable for consistent execution of technical decisions by setting clear direction and holding teams accountable for implementation
- Ensure continuously that our software architecture is shaped in close alignment with product management to support current and future product direction
- Lead architectural direction to enable the delivery of scalable, maintainable, and state-of-the-art solutions
- Translate business requirements into technical solutions
- Tackle and resolve deep technical challenges with urgency and precision
- Mentor and challenge engineers to accelerate their professional growth
- Build and scale a high-performance tech organisation and engineering culture
- Embed security and reliability as direct customer value
- Architect our systems and APIs so AI agents operate as first-class users with machine-readable contracts and structured errors that let agents self-correct
- Drive the org's transformation to agentic engineering, reshaping how teams work so agents execute safely while humans stay accountable
What we're looking for
- Extensive hands-on experience in software development with multiple general-purpose programming languages for a minimum of 5 years
- A proven track record of architecting scalable and secure systems, demonstrating a strong commitment to quality
- Extensive experience in designing and implementing APIs that enable seamless integration and system communication
- An agile and result-oriented mindset, with a strong emphasis on collaboration and teamwork
- Experience communicating with stakeholders in business terms and understanding the technical implications of their requirements
- Industry-leading experience driving cross-functional teams and enforcing engineering alignment in fast-paced environments, including making and following through on critical technical decisions
- Experience designing systems and APIs for agent consumption, with structured errors and clear contracts that let agents self-correct
- Capability to guide an engineering team through the shift to agentic engineering, reshaping workflows so agents execute safely while humans stay accountable for every outcome
- Strong verbal and written communication skills in English
Nice to have
- Proficiency in German
Your team
Product & Tech
Benefits
Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time
- You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
- With your work, you accelerate the "energy transition" and hence have a direct impact on our climate
- Work with and learn from other super-smart colleagues
- You will enjoy direct contact with core decision-makers
- You will enjoy the best chances of entering full-time in one of Europe's most thriving scaleups
- You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
- Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
- Benefits and discounts are yours with Futurebens
- Individualised opportunities for professional development
- Reporting directly to the CTO
Apply
About 1KOMMA5°
Living on wind and sunlight forever for free
1KOMMA5° brings together regional craftsmanship and scalable software, controlling solar, batteries, heat pumps, and e-mobility as an intelligent, integrated overall system in a virtual power plant connected to the electricity market in real time and fully automated.
Mission
Living on wind and sunlight forever for free; by 2030, transition 1.5 million households to renewable energies
Key facts
- Over 3,000 people
- Energy
- Over 3,000 people working at more than 80 locations worldwide, from Finland to Australia
- Goal to transition 1.5 million households to renewable energies by 2030
- Builds the energy system of the future with Heartbeat AI
- Controls solar, batteries, heat pumps, and e-mobility as an integrated system in a virtual power plant