Senior Backend Engineer (w/m/d) - Platform Team

The role

At envelio, we are proud to have been named as one of the hundred most innovative clean technology companies in the world. And we want to achieve even more with our shared vision of driving forward the energy transition using digital technologies. Our web application platforms already enable grid operators to digitize and automate their core processes.
 
As (Senior) Backend Engineer (f/m/d) you will be part of an engineering squad with strong knowledge of software architecture. Together, you drive the scalability of our product and directly influence the experience of our users, our organization, and our engineering practices.

Your tasks and responsibilities

• You are part of a cross functional team (backend, frontend and devops developers, design, and product manager) where you will be responsible for the platform functions of the product with a focus on scalability, reliability and maintainability 
• You conceptualize and develop professional backend solutions to continuously evolve our product in an agile working environment  
• You are actively involved in the design and improvement of our system architecture in the area of code, data model and infrastructure
• You familiarize yourself with our individual and domain-specific solutions and improve them in an independent and innovative way
• You exchange ideas with other developers to enable a smooth interaction between the different components

 
Our methods:

• 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 +3 years of relevant experience in web application development with a focus on backend components and infrastructure
• You have extensive experience with Python, ideally related to orchestration and parallelization of tasks in the context of multi-processing, e.g. with Celery
• You have experience with relational databases in the architecture of data models and the design of queries, preferably in PostgreSQL. Experience with graph databases is a plus
• Advanced knowledge in one of the programming languages C++, Go or Rust is a plus
• You are a team player and passionate about working with talented and inspiring people
• You prefer complex, technical challenges and have high standards for your elaborate and intelligent solutions
• You are familiar with parts of our tech stack and are looking forward to keeping up with current industry best practices 
• Optionally, you are familiar with one or more of the topics distributed computing, graph theory and geoinformatics
• You are business-fluent in English (Level C1) 

 
Our tech stack:

• 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