Data Scientist

Data Scientist

24 month contract

Inside IR35 – Paying up to £50 per hour via umbrella.

Location: Hybrid – 3 days per week in office in London or Sussex

We are seeking an experienced, Data Scientists who will need to be able to:

• Apply statistics for anomaly detection (rolling median + MAD z-score, thresholds); scipy a plus
• Time-series think: daily/weekly/monthly frequency-aware baselining
• Turns raw telemetry into decision-ready insights (not deep ML, but solid quantitative reasoning)
• Understands mobile app Kis across Bookings, Adoption, Engagement, App Health, Card Member Voice, Quality Engineering
• Be familiar with iOS/Android store metrics, crash/stability, QE/regression concepts
• Translates leadership questions into metrics and views
• Provide senior-level ownership within an established layered architecture; respects design principles (no business logic in Ul, filter-agnostic analysis)
• Contribute to and follows Architecture Decision Records (ADRs)
• Own features end-to‑end: data source → analysis → dashboard
• Communicates data-driven findings clearly to leadership and non‑technical stakeholders
• Works cross‑functionally with QE, delivery, and product teams

You will need experience working with:

• Strong Python 3.11+, pandas, NumPy for data transformation and time-series work
• Streamlit dashboard development (multi-page, session state, query-param nav)
• API/SQL data integration (Snowflake, OpenSearch, REST sources)
• Visualization: plotly, matplotlib, seaborn
• AWS (boto3, S3/Parquet), Docker, Kubernetes, CI/CD
• Secrets/auth (JWT, cryptography, proxy handling); testing with pytest

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