Too easy is boring! Together, we are on a mission to drive forward the energy transition. We love what we do, and we are unafraid to dive in. We believe in taking ownership of our work and in continuously growing and evolving. In short: own it, love it, grow with it.
We are a humble team of coffee and maté lovers with over 20 nationalities. With our geek humor, our love for emojis and random facts is only natural. Over 130 envelians are already on board. Dive in and thrive!As Senior Fullstack Engineer (all genders) you enhance our diverse engineering squad with your expertise. Together, you drive the scaling of our products and have an impact on our users, our organization, and our engineering practices.

• You are part of a cross-functional team and develop user-friendly applications which bring effective customer value
• You conceptualize, develop, and implement high-quality backend and frontend solutions to continuously evolve envelio’s core products — taking ownership of the entire development process from concept to implementation, testing, and go-live in an agile environment.
• You design and interact with APIs, both in external interaction as well as communication with the product’s frontend
• You have a continuous improvement mindset and actively look for ways to bring our code to industry best practices with confidence. Perfection is a myth! We’re more interested in the human behind the screen, so think of these criteria as helpful directions — we're excited to see how your unique skills might fit in.
• You have + 3 years of relevant experience in the development (frontend + backend) of web applications
• You have experience with Python, ideally in the context of designing or interacting with APIs as well as integration with 3rd party systems
• You are business-fluent in English (Level C1)
• You have already worked with SQL databases for data modeling and writing queries
• You have strong experience in modern frontend development and are proficient with at least one JavaScript framework such as Vue, React, or Angular
• You are a teamplayer and passionate about working with talented and inspiring people
• You are familiar with parts of our tech stack and are looking forward to keeping up with current industry best practices
• You are looking for technical challenges and pride yourself in finding smart and creative solutions
• Agile working method with Kanban in interdisciplinary squads
• Continuous integration / Continuous delivery
• Clean (and simple) code, documentation
• High unit test coverage and regular code reviews
• Knowledge sharing sessions between developers
• “You Code it – You Own it” – Squad responsibility for certain functional areas of the product Python, incl. additional packages/frameworks e.g. FastAPI, Pytest and Celery, PostgreSQL, RabbitMQ, Redis, Vue.js, Pinia, PrimeVue, TypeScript, TailwindCss
• Flexible working mode within Germany: Hybrid, from home (#LI-Remote) or in our lovely office in Cologne
• Option for remote work from abroad (up to three months per year)
• State of the art technology and modern tech stack
• Excellent hardware equipment (16 inch MacBooks, 2 screens at your workplace)
• 30 holidays + 3 corporate holidays
• Support for your health through sports membership cooperations
• Flexible use of a monthly mobility budget (e.g. Jobrad, public transport)
• Time and resources for individual growth
• envelio pension plan
• Regular company and team events