Senior Data Analyst - Contract Outside IR35 | £400-£450 per day | 3-month initial term | Hybrid London (2-3 days on-site) What you'll tackle • Analyse client demand & respondent behaviour to spot revenue, margin and completion-rate gains. • Build regression, clustering and causal models for pricing, yield and segmentation. • Produce dashboards/BAU reports tracking incentive spend, survey health and profit drivers. • Design & interpret A/B tests on incentives and matching logic; recommend refinements. • Turn insights into pricing rules, contract tweaks and product changes alongside Commercial, Product and Engineering. Tech toolkit Python (pandas, NumPy, scikit-learn) · SQL · Azure (migration in flight) · BI (Power BI/Tableau useful). Ideal background • 3-5 yrs (Minimum) analytics in trading, marketplace, media or e-commerce settings. • Strong SQL and Python for big-data wrangling & modelling. • Solid grasp of statistics, pricing or yield optimisation. • Clear, concise communicator who can translate numbers into action. • Curious mindset-happy to reverse-engineer legacy logic and propose smarter approaches. Desired Skills and Experience Key experience & expertise 3-5 yrs analytics in high-volume trading, marketplace, media or e-commerce settings Advanced SQL + Python (pandas, NumPy, scikit-learn) for large-scale data wrangling & modelling Hands-on pricing / yield optimisation and causal analysis (regression, clustering, uplift) Cloud data workflows on AWS or Azure (preferably mid-migration projects) Designing, running and interpreting A/B tests on incentive and matching logic Stakeholder-facing: translating analytical findings into contract, pricing and product changes