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.Become a part of our mission and learnmore about our Product & Tech team!Deine PositionWe are looking for a Senior Software Engineer - Energy Markets to drive the technical direction of our Energy Markets workstream, with the potential to grow into a lead role.Build and optimize backend services for VPP operations and energy market integrationsDesign systems at the intersection of backend and data processing pipelinesDrive technical decisions and guide fellow engineers on architectural choicesNavigate between data engineering, backend engineering, and energy market domainsCollaborate with product managers, data engineers, and data scientists across team boundariesDein ProfilThe successful candidate will have:Proven experience developing scalable backend solutions with TypeScriptData engineering fundamentals — designing systems bridging backend and data processingHands-on experience with energy service interfaces (smart meters, optimization, load balancing)Strong knowledge of architectural patterns, CI/CD (GitHub Actions), and cloud infrastructure (GCP preferred)Ability to guide architectural decisions, mentor engineers, and coordinate across domainsPassion for maintainable, documented, and testable codeBonus points for:Experience building virtual power plant infrastructure and energy market integrationsPython and BigQuery experience in Data Engineering or Machine Learning contextsIoT experience for grid balancing and demand responseInfrastructure as Code experience (Terraform)Familiarity with energy market APIs (EPEX Spot, Montel)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 WellpassBenefits and discounts are yours with FuturebensWhether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time #J-18808-Ljbffr