Principal Software Engineer (m/f/d)
1KOMMA5˚ · Berlin
What this role requires
6 requirements, read out of the advert rather than guessed from the job title:
Also mentioned, not required: VueJS, NestJS, Flutter, Dart, GitHub Actions, IoT applications, English (B2), German. Worth having, but their absence is not what gets a CV filtered out.
See how often each of these is required across open full-stack roles in Europe.
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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 about our Product & Tech team!
Read the full description (48 more sections)Show less
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 are looking for a top-tier Principal Software Engineer who leads with clarity, decisiveness, and deep technical insight. You will shape and own critical architectural decisions, drive alignment across teams, and ensure execution at the highest technical standard.
Key responsibilities include but are not limited to:
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
Technologies you will work with include:
Typescript/JavaScript/NodeJS (VueJS/NestJS)
Ruby on Rails
Flutter (Dart)
Google Cloud Platform
Terraform
GitHub Actions
IoT applications
Your profile
You have:
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
Expertise in 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
Excellent verbal and written communication skills in English, with proficiency in German considered a plus
Bonus points for:
Experience with IaC (ideally Terraform)
Interest in climate tech industry
We are an ambitious and dynamic company with a talented team. We require our engineers to be imaginative, enthusiastic, and willing to tackle new challenges as we strive to provide everyone with renewable energy technologies.
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
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