Senior Data Scientist - Flex Trading Strategy Development

• Take ownership of the development and optimisation of quantitative trading strategies for dispatching flexible assets across intraday, day-ahead, balancing, and ancillary service markets.
• Build in collaboration with other teams predictive models for price forecasting, asset availability, imbalance signals, and market spread identification to improve bidding and scheduling decisions.
• Own the trading strategy roadmap, identify, prioritise, and deliver new features and model improvements in iterative cycles aligned with business value.
• Collaborate closely with traders to validate hypotheses, back-test strategies against real P&L, and incorporate trader intuition into model design.
• Scale strategies across geographies and asset classes, adapting to local market rules, grid codes, and asset-specific technical constraints (e.g., degradation, ramp rates, state-of-charge).
• Design and maintain robust data pipelines that feed real-time and historical market, weather, and asset data into modelling and decision engines.
• Monitor live strategy performance, detect drift or anomalies, and implement rapid feedback loops for continuous improvement.
• Communicate results clearly to both technical and non-technical stakeholders, translate complex model outputs into trading insights and strategic recommendations.
• Stay current with developments, and state-of-the-art methods in ML/optimisation relevant to energy trading.

Do you have experience in SQL?, Do you have a Master's degree?, Seize the opportunity to become part of our E.ON Energy Markets GmbH team in Essen at the earliest possible date and apply online now as Senior Data Scientist - Flex Trading Strategy Development (f/m/d). We are seeking a motivated and curious Working Student to join our dynamic team. This is an excellent opportunity for a student passionate about software development and operations to gain hands-on experience with modern technologies such as Kubernetes and testing frameworks., * MSc or PhD in Data Science, Statistics, Mathematics, Physics, Computer Science, Operations Research, or a related quantitative field.

• 10+ years of professional experience applying data science or quantitative modelling in an energy trading, energy tech, or commodity trading environment.
• Proven track record of developing and deploying IT/data-driven solutions that directly support trading decisions or automated dispatch using MLOps tooling and CI/CD for model deployment
• Deep understanding of European electricity markets (EPEX, Nord Pool, or equivalent) including day-ahead, intraday continuous, and balancing mechanisms.
• Excellent programming skills in Python (pandas, NumPy, scikit-learn, LightGBM/XGBoost, or similar); SQL and cloud-based data platforms.
• Experience with reinforcement learning, Bayesian methods, or time-series deep learning (LSTMs, Transformers) in a trading context.
• Strong experience with optimisation techniques (LP/MILP, stochastic optimisation) applied to asset scheduling or portfolio optimisation.
• Excellent communication skills: you can explain a complex model to a trader at 7 AM and defend your methodology in a technical review at 3 PM.
• Autonomous and self-driven: you take ownership of your roadmap items, push them forward without constant guidance, and know when to escalate.
• Strong team player: you thrive in a fast-paced, collaborative environment where traders, developers, and data scientists sit side by side.

E.ON Energy Markets GmbH is a subsidiary of the E.ON Group based in Essen. Our main task is to coordinate access to the trading markets for our regional business units, to bundle the associated opportunities and risks and to provide innovative services. Our core competences include portfolio strategies, risk management and data processing. With a presence in various European countries, we are shaping the future of energy. Diversity counts at E.ON. We welcome all people and believe that differences make us stronger. Become part of our inclusive and diverse corporate culture!, E.ON is united in working on the most exciting issue that our generation needs to solve: climate change! With all our employees and customers, we are a global community of innovators and changemakers, all with the belief that each one of us can make a difference for our environment, for our society and for our children - We shape the future. To keep you motivated and healthy we are offering you the following benefits: * Flexibility: hybrid work model, flexible working times allowing great compatibility with your studies * Flat hierarchies: interdisciplinary and very cooperative working style providing room for own ideas * Career entry: Find out about our job vacancies first-hand and make valuable contacts - we promote our young talents * Modern work environment: workplace according to digital and ergonomic standards * Personal growth: life-long independent learning making use of a broad range of opportunities working with the newest technology and state of the art trainings * Nutrition & Health: wide selection of fresh meals and drinks in our subsidized bistro and canteen as well as various health offers (e.g. physiotherapy, flu vaccinations, mental health)