Data engineer Jobs in Kelsterbach

Your mission

At Circunomics, we have made it our mission to provide innovative solutions for complete battery lifecycle management. Through battery analytics and a B2B marketplace, we are bringing industries together to encourage energy efficiency, reduce waste, and create a positive impact on the environment. Join our passionate team as we strive towards creating a true circular battery economy.

• End-to-End Development : Design, develop, and deploy scalable, maintainable, efficient, and reliable applications using Python 3, FastAPI or Flask, with optional use of Angular. Ensure seamless integration of back-end components.
• Big Data Management : Handle (near) real-time big data environments, managing and processing datasets starting from terabytes with precision and efficiency.
• ETL Processes : Design, implement, and manage ETL (Extract, Transform, Load) processes to ensure efficient data handling through its entire lifecycle.
• Performance Optimization : Implement caching services like Redis to improve application performance.
• Data Pipelines : Develop and manage data pipelines using Airflow.
• Mentorship : Provide guidance and mentorship to junior developers, fostering a culture of continuous learning and improvement within the team.
• Architecture & Design : Collaborate with architects and other developers to design robust, high-performance, secure application architectures.
• Collaboration : Work closely with product managers, designers, and other stakeholders to understand requirements, provide technical insights, and ensure the successful delivery of features.
• Code Quality & Best Practices : Write clean, efficient, and well-documented code while setting and maintaining high standards for code quality through code reviews, testing, and automated tooling.
• Containerization : Containerize applications using Docker and manage container orchestration with Kubernetes.
• Infrastructure Management : Create and manage infrastructure using Helm Charts and Terraform.
• Cloud Deployment : Deploy and manage applications on AWS cloud platforms, including S3, ECR, EKS, RDS, and EFS.
• Data Visualization : Create data visualizations using Plotly.
• CI / CD Implementation : Implement CI / CD pipelines using GitHub.
• Troubleshooting & Optimization : Troubleshoot and resolve application issues while optimizing performance.

Your profile

Experience with Dash Framework for data visualization.

Why us?

About Us

Circunomics GmbH, based in Mainz, Germany was founded in 2019. Circunomics is leading the industry by offering a comprehensive battery lifecycle management solution. Co-Founders, Felix Wagner and Jan Born, are dedicated to establishing a true circular battery economy, which in turn, maximizes each stage of battery life. Along with their team, they seek to inspire the movement of batteries from the automotive industry, to the energy sector, and finally on to recyclers who close the loop by recovering any remaining raw materials.

Circunomics has developed an AI-powered, B2B marketplace where cells, modules, and packs can be sold and purchased. Through the Circunomics Analytics product, sellers and buyers alike can obtain a detailed view of their assets. From current SoH to 2nd-life simulation, this product allows for a simpler and more profitable lifecycle management. Circunomics knows that lifecycle planning is complex, and the Battery Matchmakers are on a mission to help ease this process for their customers.

The company has been supported thus far by seed investors and business angels. Startup builder Next Mobility Labs, recycler TES, Orlen VC, and Dr. Peter Mertens (former Chief Technology Officer of Audi) are some of the key players. The Series A funding round was completed in December of 2024 with the addition of investors, Schaeffler and GET Fund.

Official expansion into the US Market transpired in January of 2025 with the hiring of Adam Willmouth who will serve as the company's US Managing Director. Circunomics looks forward to further collaboration with current US clients and to further growth within this key global market.

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Top Publications and Podcasts :

Driving green mobility and new energy by optimizing second life and recycling through data.