Data Wrangler (Contract)

London (Hybrid - 2-3 days onsite) £600-£700 per day | Inside IR35 Initial contract until June with strong extension potential Harnham are supporting a large-scale transformation programme within a global transport and logistics group, as they continue to scale their data and AI capabilities across multiple operational functions. This role sits within a high-impact transformation team focused on building analytical products and optimisation solutions to improve complex operational processes and supply chain performance. The team is delivering data-driven solutions across operational domains, with the long-term goal of scaling these products across other business units.The Role This position bridges data engineering and analytics, focusing on preparing, analysing, and validating data before it feeds into a cloud-based analytics platform. You will transform complex operational datasets into actionable insights and dashboards, supporting rapid decision-making. The environment is highly collaborative, with analysts and engineers problem-solving together to tackle complex operational challenges and deliver high-value prototypes.Key Responsibilities • Analyse and prepare datasets prior to ETL ingestion • Work with SQL, Python, and Snowflake to explore, clean, and validate operational data • Build prototypes and MVP dashboards to demonstrate value quickly • Collaborate with analytics and optimisation teams on modelling initiatives • Deliver clear visualisations and insights for operational stakeholders • Identify data issues and ensure trustworthiness • Support optimisation of resource planning, logistics, and operationsSkills & Experience Required: • Strong SQL and Python skills • Experience with Snowflake or modern cloud data platforms • Experience preparing and analysing data pre-ETL • Experience building dashboards or visualisations (Power BI, Tableau, Looker, or similar) • Strong analytical mindset with the ability to translate data into business value Preferred: • Experience with AWS environments • Familiarity with modern ETL frameworks • Experience collaborating with data science or optimisation teamsCandidate Profile The ideal candidate will be: • Highly analytical and proactive • Comfortable in fast-moving, ambiguous environments • Able to turn imperfect data into usable insights • Confident communicating with stakeholders across multiple functionsWhy Join This Programme? • Work on a major operational transformation programme • Build analytics products that directly influence high-value decisions • Collaborate with cross-functional analytics, engineering, and operations teams • Opportunity for long-term contract extensions and future projects Interested? Apply via Harnham or contact us directly for a confidential discussion about this opportunity.