Senior Full Stack Developer (m / f / d) HeatOS

Your mission

At Vamo, our mission is to bring the new era of heating into the home. To achieve this, we connect modern, efficient, and environmentally friendly heat pumps across Germany with our HeatFleet and the  Vamo App  for end customers.

To make these processes efficient and scalable, our  HeatOS team focuses on digitally mapping and automating all internal business processes – from lead management and sales to planning, operations, and installation.

As a Senior Full Stack Developer in the HeatOS team , you take full ownership of the system’s architecture and implementation . You work hands-on, make key technical decisions, and actively shape the foundation on which our growth and processes will remain efficient, robust, and future-proof.

Tasks :

• Development & Implementation : You lead the conception, development, and implementation of new, complex features for our website and other business processes. This ranges from architectural design in the backend (Node.js) to leading the implementation in the frontend (Vue.js), setting and executing technical guidelines.
• API Design : You are primarily responsible for the design, standardization, and implementation of robust, highly scalable, and future-proof APIs. These serve as the central communication interface for our website and CRM, as well as for connecting partner systems.
• Code Quality & Testing : You establish and monitor high standards for code quality, maintainability, and test coverage (unit & integration tests) within the team. This includes defining code conventions, conducting code reviews, and mentoring other developers for continuous improvement of development quality.
• Infrastructure & Deployment : You proactively help shape the architecture of our CI / CD pipeline and infrastructure. This involves optimizing and further developing our environments using technologies like Docker, Heroku, and MongoDB to ensure efficient, reliable, and automated deployment.
• Team Collaboration : You are part of the interdisciplinary development team and work closely with Product Managers, Developers, and other stakeholders. You are responsible for the technical analysis of requirements and translating them into outstanding, feasible technical solutions.
• Technological Vision & Innovation : You proactively identify new technologies, architectures, and best practices and drive their evaluation and introduction. Your goal is to continuously improve our platform, future-proof it, and achieve a strategic advantage through technological excellence.

Your profile

Experience :

You have several years of practical experience in full-stack development, ideally in an agile startup environment as a Lead or most experienced developer on a team.

Tech Stack :

Skills :

Formal Requirements :

Why us?

Your Tech Stack. Our Impact.

With us, you are right in the middle of the heating transition, using your technical expertise to help create  real impact . Work hand-in-hand with passionate colleagues from trades, tech, and business. We rely on open communication and flat hierarchies to achieve our goal : climate-friendly heating for everyone.

Your Career. Our Growth.

We give you the tools, the freedom, and the responsibility to grow with us. Experience the dynamics of a tech startup and build a career in a market that is changing the world. You will be the driving force that turns ideas from the initial concept to tangible solutions through final implementation.

Genuine Depth. No Buzzwords.

We rely on profound technical and business expertise. You will work in a highly qualified and motivated team that is passionately searching for the best solutions.

Our Flexibility. Your Choice.

You decide where you work : 100% remote or in our modern office in Cologne. We ensure you feel comfortable everywhere and are always part of the team. Regular virtual events and in-person meetings in Cologne strengthen our team spirit and cohesion.

About us

We are a young heat pump technology company from Cologne. With a great mix of young and old and a modern, open team culture, we make craftsmanship sexy and rely on the best and most ambitious talents! While others continue to ride the dead horses of gas and oil heating, or dream of hydrogen and district heating, we focus  100% on heat pump technology .

Our goal is to make green heating feasible & affordable for everyone. We offer our customers an all-round carefree package for their heating system change, from the application for funding to installation and subsequent support during operation. Best of all, our  subscription model eliminates the purchase costs and risks of buying!

All Vamo heat pumps are digitally networked in real time . This allows us to respond to malfunctions before they occur. And : we can remotely control the systems so that our customers have minimal electricity costs . The intelligent interaction of all  heat pumps in our fleet also helps to keep our electricity grid stable.

Together with you, we want to digitalize the trade and make it more attractive for young people and thus help the  heat and energy transition in Germany to achieve a breakthrough.

Heat your home, not the planet!