Principal Software Engineer (m/f/d)
Principal Software Engineer (m/f/d)
Posted on :
05-08-2025
Employer Active
1 Vacancy
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Job Description
1KOMMA5
We are looking for you to join our tech team in Berlin Munich or Hamburg. 1KOMMA5 is creating Germanys largest one-stop-shop for the sale installation and servicing of solar panels heat pumps electricity solutions and charging infrastructure. And the best part They are all interconnected!
Become a part of our mission and learn about our Product & Tech team!
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 installationsAt 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 organisations 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 plusBonus points for:
- Experience with IaC (ideally Terraform)
- Interest in climate tech industryWe 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 Europes 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
- 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
Employment Type
Full Time
Key Skills
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