Senior Software Engineer - Energy Markets (m/f/d)

Das ist der Job

1KOMMA5At 1KOMMA5, we pursue a clear vision: Living on wind and sunlight forever for free.

Darum lohnt es sich

Apply now and help us shape the energy world of tomorrow.Become a part of our mission and learn more about our Product & Tech team!Your missionWe 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.Key responsibilities include: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 boundariesYour profileThe 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 timeAbout us"At 1KOMMA5, our vision is to accelerate CO2 neutral life for all!

Connecting our customers into one powerful clean energy operating system to enable flexible tariffs and to ultimately follow the rhythm of wind and sun!" - Philipp Schröder (CEO 1KOMMA5) 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?

We created an easy one-stop-shop to buy and install solar, charging stations and heat pumps, with the purpose of liberating all European homes from the shackles of fossil fuels. With Heartbeat, we make clean energy smarter.