Senior Backend Engineer (f/m/d)

About Working at envelio
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! Your Role
As Senior Backend Engineer (f/m/d) you will be part of an engineering squad with strong knowledge of coding, database and architecture. Together, you drive the scaling of our product and have an impact on our users, our organization, and our engineering practices.       How You Make an Impact

• You are part of a cross-functional team (backend, frontend and devops developers, design, and product manager) and develop user-friendly applications which bring effective customer value 
• You conceptualize and develop professional backend solutions to continuously evolve our product in an agile working environment  
• You design and interact with APIs, both in external interaction as well as communication with the product’s frontend  
• You develop strategic pathways for evolving the product's tech stack to state of the art solutions  
• You have ambitious quality objectives and accompany the entire development process, from concept over implementation through testing to go-live  

Your Profile
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 relevant experience in the backend development of web applications and you self-sufficiently implement new features of various complexity 
• You have extensive experience with Python, ideally in the context of designing or interacting with APIs as well as integration with 3rd party systems 
• You have experience with SQL databases for data modeling and query design 
• You are a team player and passionate about working with talented and inspiring people  
• You are looking for technical challenges and pride yourself in finding smart and creative solutions 
• You are familiar with parts of our tech stack and are looking forward to keeping up with current industry best practices 
• You are business-fluent in English (Level C1) 

How we develop Software

• 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

Our Tech Stack

• Python, incl. additional packages/frameworks e.g., FastAPI, SQLAlchemy and Celery
• PostgreSQL
• RabbitMQ, Redis
• Docker, Kubernetes

Your Benefits

• Flexible working mode within Germany: Hybrid, from home 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