Principal Software Engineer (m/f/d)

1KOMMA5°We are looking for you to join our tech team in Berlin, Munich, or Hamburg. 1KOMMA5° is creating Germany's 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 more about our Product & Tech team!Deine PositionIn 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 thisOperating 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 organisation's technical strategy and innovation effortsAccountable for consistent execution of technical decisions by setting clear direction and holding teams accountable for implementationEnsure continuously that our software architecture is shaped in close alignment with product management to support current and future product directionLead architectural direction to enable the delivery of scalable, maintainable, and state-of-the-art solutionsTranslate business requirements into technical solutionsTackle and resolve deep technical challenges with urgency and precisionMentor and challenge engineers to accelerate their professional growthBuild and scale a high-performance tech organisation and engineering cultureTechnologies you will work with include:Typescript/JavaScript/NodeJS (VueJS/NestJS)Ruby on RailsFlutter (Dart)Google Cloud PlatformTerraformGitHub ActionsIoT applicationsDein ProfilYou have:Extensive hands-on experience in software development with multiple general-purpose programming languages for a minimum of 5 yearsA proven track record of architecting scalable and secure systems, demonstrating a strong commitment to qualityExtensive experience in designing and implementing APIs that enable seamless integration and system communicationAn agile and result-oriented mindset, with a strong emphasis on collaboration and teamworkExpertise in communicating with stakeholders in business terms and understanding the technical implications of their requirementsIndustry-leading experience driving cross-functional teams and enforcing engineering alignment in fast-paced environments, including making and following through on critical technical decisionsExcellent 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.BenefitsYou are part of an international, dynamic, and highly motivated team of people who have proven to make things happenWith your work, you accelerate the "energy transition" and hence have a direct impact on our climateWork with and learn from other super-smart colleaguesYou will enjoy direct contact with core decision-makersYou will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleupsYou work remotely (Germany-wide), with offices in Hamburg, Berlin or MunichCreate a healthy balance alongside your work and enjoy all the benefits of the EGYM WellpassWhether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same timeIndividualised opportunities for professional developmentReporting directly to the CTOOriginally posted on Himalayas

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