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Backend Developer - Data (f/m/d)



Software Engineering
Hanover County, VA, USA · Bergheim, Germany · Würzburg, Germany · Essen, Germany · Boulder, CO, USA · Hanover, Germany · Munich, Germany · Würzburg, Germany · Berlin, Germany · United States
Posted on Wednesday, June 12, 2024

Backend Developer - Data (f/m/d)

Locations: Essen (NRW), Hanover (NDS), Würzburg (BY), Munich (BY), Berlin (Berlin), Hamburg (Hamburg), Frankfurt (HE)

Applications can only be submitted online via our portal. Please understand that we cannot consider applications that reach us by e-mail.

Job description

About the team

In this position, you will be part of our Chapter Software Engineering. The chapter represents all experts who deliver essential software development and engineering capabilities to all our product teams. These experts are organized together to keep E.ON’s code base modern, secure and excellent.
The products you will be working on belong to our team Digital Solutions I Future Energy Home. This team develops and operates software to manage home energy devices such as photovoltaic, inverters, batteries, EV charging wall boxes, heat pumps and meters as a cloud-based solution for our central and local units so they can rollout those solutions to the end-customers. We integrate with numerous vendors’ devices and apply centralized insights, analytics and control mechanisms for these devices.

meaningful & challenging - Your tasks

  • Build python data-intensive apps based on microservice architecture using DDD & CQRS approach within AWS cloud​

  • Implement ORMs for our energy data management backend system using libraries such as SQLAlchemy, Peewee and access databases such as TimescaleDB, AWS RDS (MySQL, PostgreSQL) with Python​

  • Leverage AWS API Gateway and AWS AppSync to build energy management data products for transactional and analytical operations ​

  • Support cross-functional domain data scientists to refactor their analytical apps into production-ready apps using software design patterns and principles such as Factory/Observer patterns, clean-code and SOLID principles​

  • Continuously integrate, package and test code changes into GitLab repo based on Gitflow branching strategy, with Unit Tests and BDD Integration Tests Scenarios​

  • Contribute to „Community of Practice“ to actively foster collaboration and exchange

authentic & ambitious - Your profile

  • Several years experience in building enterprise-grade Python data intensive applications using software best practices such as DDD, CQRS and TDD principles on AWS cloud​

  • Several years experience in SQL-based python libraries such as SQLAlchemy/Peewee to access AWS RDS (MySQL&PostgreSQL) databases​

  • Several years of experience in AWS-Services such as API-Gateway, AWS AppSync, AWS IAM, AWS Cognito, Lambda, AWS PowerTools, DynamoDB​

  • Profound knowledge in building python applications using Factory/Observer Design Patterns, Clean Code/SOLID principles, Docker&Kubernetes​

  • Appropriate communication skills and ability to help others and contribute to “Community of Practice“

smart & useful - Our benefits

  • We provide full flexibility: Do your work from home or any other place in Germany - of course including all our great offices from Hamburg to Munich. You want even more? Go on workation for up to 20 days per year within Europe.
  • Recharge your battery: You have 30 holidays per year plus Christmas and New Year's Eve on top. Your battery still needs charging? You can exchange parts of your salary for more holidays or you can take a sabbatical.
  • Your development: We grow and we want you to grow with us. Learning on the job, exchanging with others or taking part in an individual training - Our learning culture enables you to bring your personal and professional development to the next level.
  • Let’s empower each other: Take the opportunity to engage in our Digital Empowerment Communities for collaboration, learning, and network building.
  • We elevate your mobility: From car and bike leasing offers to a subsidised Deutschland-Ticket - your way is our way.
  • Let’s think ahead: With our company pension scheme and a great insurance package we take care of your future.
  • This is by far not all: We are looking forward to speaking with you about further benefits during the recruiting process.


It is important to us that people with disabilities have access to a fair application process, providing them with an opportunity to shine. Therefore, our representative body for severely disabled people will be included in the process from an early stage. Please let us know via the application form if you require technical or organisational adjustments during the application process. We will strive to make the required aids available.

Should you not be able to apply online and want to speak someone in person, please contact your local recruiter.

What else you should know:

Type of contract: Permanent contract
Employment type: Full or part time
Work Model: Hybrid
Company: E.ON Digital Technology GmbH
Job number: 228048

As long as the position is advertised on our careers page, we are looking for suitable candidates (f/m/d). We look forward to receiving your application!