Principal Software Engineer (m/f/d)

1komma5grad

Berlin

Posted Jul 29, 2026

Full-time
Tech
experienced

Job description

1KOMMA5° At 1KOMMA5°, we pursue a clear vision: Living on wind and sunlight forever for free. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it?
We bring 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. Directly connected to the electricity market – in real time, fully automated. This way, energy is used when it is available from renewables and particularly cost-effective. By 2030, our goal is to transition 1.5 million households to renewable energies. Over 3,000 people are working towards this every day, at more than 80 locations worldwide, from Finland to Australia.

Want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.

Learn more about our Product & Tech team! Deine Position

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

Dein Profil

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

Benefits

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
Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time
Individualised opportunities for professional development
Reporting directly to the CTO