Senior Backend Engineer (all genders)

envelio

160

Cologne, Germany

Posted on: 2026-05-13

Category: energy

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Employment type:

Full time

Experience required:

Senior

Salary

Salary not provided

About the company:

⚡ envelio - Supporting the smarter, faster evolution of your power grid.

We provide distribution grid operators with the Intelligent Grid Platform (IGP) – a software suite that brings all your grid data together to enable real-time decisions, long-term planning, and much, much more.

With real-time digital twins, automated grid assessments, and live monitoring, IGP empowers DSOs to manage increasing infrastructure complexity, renewable integration, and growing power demand.

Our applications cover the full spectrum of operations and planning:
🔹 Process thousands of connection requests in minutes, not days
🔹 Detect grid congestion risks before they cause trouble
🔹 Simulate and plan new grid areas with confidence
🔹 Evaluate the grid impact of EVs, PVs, and heat pumps before they’re built

IGP integrates seamlessly with existing systems like GIS, NIS, SCADA, MDM, EDM and others – enhancing visibility without overhauling existing workflows. And because it’s modular, grid operators can start where they need impact the most.

Trusted by grid operators across Europe and beyond – from Westnetz to Helen Electricity Network and Eversource – envelio's IGP is setting new standards in grid management and planning, facilitating a smoother transition to renewable energies.

💡 Not sure which part of IGP fits your needs? We’ll help you find it.
👉 Visit our product pages or message us directly.

🚀 Want to work with us? We're hiring – and with a 95% recommendation rate on Kununu, we're proud of the culture we've built. ⭐ Check our open positions on Kununu: https://www.kununu.com/de/envelio

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 150 envelians are already on board. Dive in and thrive!

Your Role

As Senior Backend Engineer (all genders) 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 fullstack 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 
You care about ease of our operation of our service, making relevant infrastructure decisions

Your Profile

Perfection is a myth! We are much more interested in the person behind the screen. These criteria are therefore intended more as a guide for you. We are excited to see how your individual skills fit in with us.

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 know how to run web applications reliably, monitor them, debug and fix production issues and design and implement preventive measures for the future
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 from anywhere in the EU or the USA) 
State of the art technology and modern tech stack
Excellent hardware equipment (16 inch MacBooks, 2 screens at your workplace)
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