Data Analyst

Data Analyst | £500 - £510 We're working with a leading digital transformation consultancy delivering mission-critical public sector infrastructure on this exciting opportunity. We are searching for a technically-astute Data Analyst with a background in engineering to spearhead a major decommissioning program. You will bridge the gap between legacy codebases and modern data architecture, utilizing Python and PySpark to map complex data flows within a high-security AWS environment. The Role • Lead the forensic analysis of existing systems built on Java, Node JS, and React to document end-to-end data lineage. • Reverse engineer complex data models and system dependencies to support critical decommissioning and migration decisions. • Use Python, PySpark, and AWS Glue to validate data pipelines and confirm how information transforms across the wider program. • Ensure data integrity and accuracy by implementing rigorous testing frameworks using PyTest and Great Expectations. • Collaborate with cross-functional teams to clarify ownership, integration points, and RDS storage structures. What You'll Need • An active SC Clearance is mandatory due to the secure nature of the environment. • Strong technical background with the ability to read and understand Java, Node JS, and React codebases. • Advanced proficiency in Python, PySpark, and working with JSON/RDS datasets. • Proven experience in Cloud environments (AWS preferred, Databricks is a significant plus). • Expertise in Data Quality management and automated testing (PyTest, Great Expectations). What's On Offer • Competitive day rate of £500 - £510 (Inside IR35). • 100% Remote working flexibility for a better work-life balance. • Long-term stability with a 1-year contract duration. • The chance to work on large-scale, impactful datasets within a high-profile secure program. Apply via Haystack today!