Backend Developer - Data (f / m / d)

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 | Future Energy Home. This team develops and operates software to manage home energy devices such as photovoltaic systems, inverters, batteries, EV charging wall boxes, heat pumps, and meters as a cloud-based solution for our central and local units, enabling them to rollout these solutions to 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 applications 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 like 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 Test Scenarios.
• Contribute to the „Community of Practice“ to actively foster collaboration and exchange.

Authentic & Ambitious - Your Profile

• Several years of 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 of 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, AWSCognito, 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 the “Community of Practice”.

Additional Benefits

• Full flexibility: Work from home or any other place in Germany, including offices from Hamburg to Munich. Up to 20 days per year of workation within Europe.
• Recharge your battery: 30 holidays per year plus Christmas and New Year's Eve. Option to exchange parts of salary for more holidays or take a sabbatical.
• Your development: Opportunities for on-the-job learning, training, and personal growth.
• Empower each other: Engage in Digital Empowerment Communities for collaboration, learning, and networking.
• Mobility benefits: Car and bike leasing, subsidized Deutschland-Ticket.
• Future planning: Company pension scheme and insurance packages.
• And more benefits to be discussed during the recruiting process.