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Haystack

Data Scientist

Hybrid

London, United kingdom

£ 550 /day

Freelance

11-03-2026

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Skills

Python SQL Data Science Spark PySpark

Job Specifications

Data Scientist | London | Hybrid | £500 - £550 per day

We're working with one of the most influential Central Government Organisations in the current economic climate on this exciting opportunity. We are looking for a high-calibre Analytical Data Scientist to lead mission-critical projects using a sophisticated stack of SQL, Python, and R to deliver impactful insights for the GSCIP programme.

This is a high-impact contract where you will transform complex supply chain data into actionable intelligence, developing bespoke tools and interactive visualisations that shape national strategy. If you are a cleared technical expert who thrives on solving complex challenges with Pyspark and Graph data, this is the role for you.

The Role

• Lead and collaborate with a team of specialist data scientists to deliver key outputs for high-priority commissioned use cases.

• Architect and develop advanced data tools and visualisations to enhance the GSCIP analytical ecosystem.

• Execute bespoke data science projects to improve the interpretation of complex datasets and enhance overall delivery capability.

• Engage directly with senior stakeholders across government to scope requirements and deliver analysis that drives policy decisions.

• Drive technical standards by implementing best practices in Python, SQL, and R coding for high-quality project delivery.

What You'll Need

• Proven proficiency in delivering high-quality coding projects using at least two of: SQL, Python, and R.

• Significant technical data science knowledge with experience leading teams through complex, multi-stage data projects.

• Hands-on experience with Pyspark, Spark SQL, and building interactive visualisations for senior-level reporting.

• Knowledge of Graph data structures, Graph Query Languages, and Knowledge Graphs is highly desirable.

What's On Offer

• Competitive daily rate of £500 - £550 inside IR35.

• Hybrid working model (40% office-based) in a central London hub with a dedicated team collaboration day every Monday.

• The chance to work on some of the most data-rich and impactful supply chain projects in the public sector.

• Immediate start with interviews commencing from mid-March 2026.

Apply via Haystack today!

About the Company

Discover Haystack - the UK's fastest growing tech hiring marketplace. Driven by our award-winning mobile app and web platform, Haystack connects active and passive tech talent directly with hiring managers and talent acquisition teams. We're trusted by over 150,000+ UK-based techies, working in Software Engineering, Data, Design, DevOps, Cloud, Tech Management, Testing, Product & Delivery, Architecture and more. 100s of employers from startups and scale-ups like Atom Bank, DuckDuckGo and Football Radar to established e... Know more