<h3>Why this role exists</h3><p>We are building on top of large, fast-moving time-series datasets (energy, weather, market signals). You will own the data backbone that enables ML and product to move fast and reliably.</p><h3>What you’ll do</h3><ul><li><p>Build and maintain ingestion and transformation pipelines for large-scale time-series data</p></li><li><p>Implement data validation, quality checks, and observability</p></li><li><p>Develop internal services and REST APIs (client and server side)</p></li><li><p>Optimize storage formats and access patterns for performance and cost</p></li><li><p>Collaborate on CI/CD, containers, and infrastructure topics</p></li></ul><h3>What we’re looking for</h3><ul><li><p>Strong Docker experience (development and production)</p></li><li><p>Solid Git workflow including GitLab and CI/CD</p></li><li><p>Python ≥ 3.12 with strong understanding of concurrency, performance, and pandas/numpy</p></li><li><p>REST API development experience (client and server side)</p></li><li><p>Confident Unix/Linux user (grep, ss, curl, ssh, scp, sed, basic bash scripting)</p></li></ul><h3>Nice to have</h3><ul><li><p>Golang</p></li><li><p>GitOps and GitLab runner management</p></li><li><p>Knowledge of compression and columnar storage</p></li><li><p>Experience with pyarrow and xarray</p></li></ul><h3>What you get</h3><ul><li><p>Real ownership of the data platform from an early stage</p></li><li><p>Direct impact on ML speed and product performance</p></li><li><p>Competitive salary and meaningful equity</p></li><li><p>A small, focused team with high technical standards</p></li></ul><h3>How we work</h3><p>We value clarity, simplicity, and reliability. Small team, high trust, flat hierachy. We ship fast, but we care about doing it properly.</p>

<p>Marbl delivers automated trading optimization for flexible energy assets. Our system generates dispatch schedules and market actions tailored to each asset’s technical constraints, operational preferences, and risk profile. Built for MW-scale batteries, hybrid renewable portfolios, virtual power plants, and industrial flexibility, Marbl combines quantitative optimisation, algorithmic trading logic, and high-speed market integration to turn flexibility into measurable revenue without adding operational complexity. The platform is modular and API-driven, designed to integrate with asset control systems and market access providers. The result is stronger trading performance, faster reaction to market signals, and scalable execution without adding overhead costs as portfolios grow.</p>

Data Engineer

About the Job

About the Company

marbl

Similar Jobs

Data Engineer

Data Engineer

Data Engineer, Parameta Solutions (Madrid)

Data Engineer, Parameta Solutions (Madrid)

Software Engineer

Software Engineer

Data Engineer

Data Engineer

Data Scientist

Data Scientist

Data Engineer

Data Engineer

Data Engineer (f/m/d)

Data Engineer (f/m/d)

Data Engineer

Data Engineer

Machine Learning Engineer (Forecasting / Optimisation)

Machine Learning Engineer (Forecasting / Optimisation)

Data Scientist

Data Scientist