Outside Spy
Bristol, UK
Senior Data Engineer - HIRING ASAP Start date: ASAP Duration: 6 weeks initially Location: 1-2 days per week in Bristol office, 3-4 days remote per week Rate: £450 - £550 per day outside IR35 Skills: Snowflake engineering (hands-on) Advanced SQL and performance troubleshooting (query profiling, workload behaviour) Warehouse utilisation analysis (top warehouses/queries, heavy tasks, large tables) Practical cost optimisation tactics and "cost heatmap" creation Ingestion and orchestration deep expertise End-to-end ingestion reviews from core source systems (2-3 systems typical) Orchestration tooling/jobs analysis (dependencies, scheduling, retries, idempotency) ETL vs ELT patterns; reload vs incremental logic; backfill and replay strategies. Transformation chain analysis Ability to trace staging transforms curated/core layers. Identifying brittle/hard-coded business rules and refactoring opportunities Data modelling in core domains Strong...