(Senior) Backend Engineer (f/m/d)

The role

Your tasks and responsibilities

• 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  

• 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

What you need to succeed

• 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) 

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

Why envelio

• 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