Data Scientist - Flex Trading Strategy Development (f/m/d)

Das ist der Job

E.ON Energy Markets GmbH E.ON Energy Markets GmbH (EEM) is a subsidiary of the E.ON Group based in Essen.

Darum lohnt es sich

Join our team in Essen and apply online as Data Scientist – Flex Trading Strategy Development (f/m/d). 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.

Strong team player: you thrive in a fast‑paced, collaborative environment where traders, developers and data scientists sit side by side. #J-18808-Ljbffr Our main purpose is to coordinate access to trading markets for our regional business units, to bundle the associated chances and risks and to provide innovative services.

Our core competencies include portfolio strategies, risk management and data processing. With activities in various European countries, we shape the future of energy. At E.ON diversity matters. We welcome all people and are convinced that differences make us stronger. Become part of our inclusive and diverse company culture!

To create equal opportunities for everyone we offer our positions in full or part-time. Ready to become a Playmaker of the energy transition? Are you brave enough to drive progress and forge new paths? Let's make it work and create real impact together. We can't wait to meet you! It's on us, to make new energy work.

Key Responsibilities Take ownership of the development and optimisation of quantitative trading strategies for dispatching flexible assets across intraday, day‑ahead, balancing, and ancillary service markets.

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, translating 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.

Your Profile MSc or PhD in Data Science, Statistics, Mathematics, Physics, Computer Science, Operations Research or a related quantitative field. 3+ years of professional experience applying data science or quantitative modelling in an energy trading, energy tech or commodity trading environment.

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.