Senior Data Infrastructure Engineer
Join us and start your career in CEZ Group. We search for colleagues who will provide safe, reliable and clean energy to our customers as well as to society as a whole.
ČEZ, a. s. Duhová 425/1, 14000 Praha - Michle Full-time work
About the Team
The Analytical Team at ČEZ Trading is the mathematical and data backbone behind everything we do on the market—from fundamental analysis and asset valuation to algorithmic execution.
To keep up with expanding markets and growing volumes of data, we are building out a rock-solid data foundation that serves all our analysts and traders across the entire Front Office. That is where you come in.
You will take full technical ownership of our analytics data infrastructure, bridging raw data sources (custodied by our Operations team) with our quantitative and modeling environment.
We are looking for someone who can step in, understand the business logic behind the numbers, turn it into clean architecture and efficient storage, and truly own this data platform as their product.
Job Description Data Platform Architecture & Storage Design: Design, optimize, and scale data storage solutions across TimescaleDB and MinIO (or other S3-compatible object storage), implementing efficient partitioning, indexing, and data modeling strategies tailored to Front Office energy datasets.
Unified Data Access Layer Ownership: Take full ownership of our internal Python library. Maintain code quality, structure, and continuous release pipelines so that analysts and traders across the Front Office can access any dataset via a single, seamless interface—abstracting away the underlying storage engine.
- Pipeline Engineering & Orchestration: Build, monitor, and scale reliable data ingestion pipelines, managing workflow orchestration across the department primarily via Dagster and associated platform tools.
Cross-Team Collaboration & Business Logic: Collaborate closely with Operations, Analysts and Traders to understand complex business logic, translate trading requirements into structured schemas, and curate analytics-ready datasets. Containerization & Platform Management: Maintain and deploy data services within our containerized infrastructure, leveraging Kubernetes running on an OpenShift enterprise platform.
- Product Ownership: Act as the Product Owner for the department’s data infrastructure and loader package—prioritizing feature requests from traders and analysts, gathering requirements, and driving the technical platform roadmap.
Requirements
- Experience: 3+ years of experience in data engineering, backend software development, or data infrastructure roles, ideally within energy, trading, or finance environments.
- Database & Storage Expertise: Deep, hands-on experience with TimescaleDB / PostgreSQL and S3 object storage including performance tuning, data partitioning strategies, and schema design for complex time-series workloads.
- Python Proficiency: Advanced Python engineering skills with proven experience building, packaging, and maintaining shared internal libraries and clean codebases.
- Orchestration & DevOps: Strong experience with workflow orchestrators (preferably Dagster) and containerized deployment environments using Kubernetes (hands‑on experience with OpenShift is a major advantage).
- Domain Mindset: Eagerness to dive deep into energy market data, understand Front Office business logic, and anticipate the data access needs of quants, market analysts, and traders.
- Communication & Ownership: Excellent communication skills, strong initiative, a continuous‑learning mindset, and the willingness to act as a clear technical lead and Product Owner for the analytics data platform.
What We Offer
High ownership and technical autonomy in shaping the core data platform for a top European energy trading house. Direct collaboration with high‑performing quantitative analysts, market analysts, data engineers, and commodity traders.
Access to modern tech stacks, high‑performance computing resources, and rich European commodity market datasets. Motivating, performance‑linked financial compensation package. Flexible corporate benefits and long‑term career growth opportunities within ČEZ Group.
Diversity and Inclusion at CEZ Group At CEZ Group, we value all employees. We will motivate you to develop your strengths, gain new experience and grow in your career. At the same time, we emphasize work‑life balance so that you have enough time to spend with your loved ones or to pursue your hobbies.
We believe that diversity means strength, which is why we strive for diverse work teams and equal opportunities. Everyone has a chance to be unique. You can learn more about our approach to employees in the CEZ Group Diversity and Inclusion Policy.