Senior Data Engineer

Role: Senior Data Engineer Location: London – The JJ Mack Building, 33 Charterhouse St, EC1M 6HA Type of work: Contract Mode of work: Hybrid – 2days Onsite in a week JD: Essential skills/knowledge/experience: * Experience with AWS data stack (S3, EMR, EC2, etc.) * PySpark * Production-grade data pipelines * Performance optimisation and large-scale data processing * Snowflake * Data modelling (RDV/BDV or similar patterns preferred) * Query performance tuning * DBT (or equivalent SQL transformation framework) * Development of modular, testable data models * Experience working in structured transformation frameworks (e.g. dbt, Grid-style approaches) * CI/CD & DevOps * Hands-on experience with GitHub Actions (or similar) * Exposure to Infrastructure-as-Code (e.g. Terraform) * Experience working in engineering-led environments with strong SDLC practices * General engineering maturity * Strong software engineering principles (testing, modularity, version control) * Experience working in cross-functional product/data teams * Ability to contribute to design and solutioning discussions