joinWe are looking for you as an addition to our tech-team in Berlin, Munich or Hamburg. 1KOMMA5° is building Germanys largest one-stop-shop for sale, installation and services related to solar, heat pumps, electricity and charging infrastructure. And they are all connected! Be a part of our mission!Become a part of our mission and learn <a href="https://1komma5.com/de/ueber-uns/jobs/tech/" target="_blank">more</a> about our Product &amp; Tech team!As a Senior Software Fullstack Engineer in 1KOMMA5°, youll lead the development of a scalable microservices architecture on Google Cloud, connecting and controlling IoT devices as part of our Heartbeat platform.Your role involves designing robust backend services and accompanying UIs, implementing APIs, and creating consistent abstraction layers to facilitate seamless integration across diverse system components. Collaborating with cross-functional teams, youll contribute to the entire product lifecycle.Key responsibilities include but are not limited to:<ul><li>Design and implement performant, secure and scalable backend services and engaging web applications on Google Cloud Platform and Vercel for our IoT energy management platform.</li><li>Develop responsive, user-friendly interfaces using modern frameworks (e.g. React, Next.js) and TypeScript.</li><li>Build and consume APIs, ensuring smooth communication between frontend and backend components, and exposing clear interfaces to other teams.</li><li>Work with data visualization tools to present real-time telemetry, forecasts, and control data in a clear and actionable way.</li><li>Optimize application performance across the stack for large-scale deployments.</li><li>Collaborate with cross-functional teams to understand requirements, plan features, and deliver complete solutions.</li></ul>Technologies you will work with include:<ul><li>Frontend: TypeScript, React (or similar), Next.js</li><li>Backend:TypeScript, NestJS, Prisma, Postgres</li><li>Cloud: Google Cloud Platform (Cloud Run, CloudSQL, Big Query...)</li><li>Monitoring &amp; Observability: Datadog</li><li>IoT: Device integration, telemetry processing, optimization workflows</li><li>Microservice architectures</li><li>Infrastructure as Code (Terraform)</li><li>GitHub Actions</li></ul>The successful candidate will have:<ul><li>Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.</li><li>Minimum of 5+ of experience in fullstack development, with proven skills in both backend and frontend.</li><li>Strong proficiency in TypeScript and modern frontend frameworks (React, Vue, or Angular).</li><li>Proven experience with cloud infrastructure (ideally Google Cloud)</li><li>Proficiency in programming languages such as Go, Python, and TypeScript</li><li>Experience in designing and implementing APIs for complex systems.</li><li>Familiarity with DevOps practices and tools, including continuous integration and deployment (CI/CD) pipelines.</li><li>Comfortable working in cross-functional, fast-paced environments.</li><li>Strong communication skills in English; German is a plus.</li></ul>Bonus points for:<ul><li>Experience with IaC (ideally Terraform)</li><li>Experience building containerised applications deployed on Kubernetes or Google Cloud Run</li><li>Experience with building applications following 12factor.net rules and principles </li><li>Experience with Data Engineering: Machine Learning, data pipelines</li><li>Interest in climate tech industry</li></ul>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.<ul><li>You are part of a dynamic team with people who prove every day that they can make things happen and move companies forward with great positive impact</li><li>You move in flat hierarchies and have short decision-making paths. You can learn a lot quickly and get involved at different levels</li><li>You will be welcomed by a friendly and familiar team</li><li>You are part of the energy transition and recognize in your daily work what purpose it serves</li><li>You can work in one of our offices in Hamburg, Berlin or Munich</li><li>You create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass</li><li>Benefits and discounts are yours with Futurebens</li><li>Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time</li></ul>

1Komma5°

(Senior) Software Fullstack Engineer TypeScript (m/f/d)

1Komma5°

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