* Sr. Data Engineer/Data Scientist - 12 months + ext. - Hybrid/London.*On behalf of one of our key partners RED now has a new opportunity for a Sr. Data Engineer/Data Scientist to join them on an initial 12 months contract with long-term scope.This contract is to start ASAP and will be hybrid with 3 days pr week on-site in central London and 2 days pr week remote.Focus of the role:Python/Streamlit production intelligence platform for a Payment Travel Mobile App - centralizes telemetry (Snowflake, ELF/OpenSearch, App Store Connect, Jira, etc.) into dashboards for TLS leadership. Strict 4-layer architecture: Ingestion - Analysis - S3 Storage - Visualization.Specific skills/experience required:5+ years of experience as a Data Engineer.Strong Python 3.11+, pandas, NumPy for data transformation and time-series workStreamlit dashboard development (multi-page, session state, query-param nav)API/SQL data integration (Snowflake, OpenSearch, REST sources)Visualization: plotly, matplotlib, seabornAWS (boto3, S3/Parquet), Docker, Kubernetes, CI/CDSecrets/auth (JWT, cryptography, Proxy handling); testing with pytestData Science/AnalyticsApplied statistics for anomaly detection (rolling median + MAD z-score, thresholds); scipy a plusTime-series thinking: daily/weekly/monthly frequency-aware baseliningTurns raw telemetry into decision-ready insights (not deep ML, but solid quantitative reasoning)This role is INSIDE IR35.Candidates HAS to be based in the UK.If you are interested please ..... full job details .....