Model Validation Quant Contract OUTSIDE IR35 Quant Capital is urgently looking for a Model Validation Quant to join our high profile client. Our client is a Tier 1 Investment Bank. This is a first-line quant role — embedded with the quant desk and directly shaping modelling outcomes, not validating them after the fact. This isn’t just about implementing models. It’s about being the person who sees the cracks before they become validation blockers. We need someone who can: • Challenge model assumptions • Spot weaknesses in structure, calibration, or data • Write documentation that defends the model with clarity and depth You’ll work closely with FO quants, guide their submissions, and act as a bridge to model validation — pre-empting issues before they escalate. Responsibilities: • Review and guide FO quant model submissions with a critical eye • Develop, test, and refine models using Python notebooks • Produce high-quality, validation-ready documentation • Interact proactively with model validation teams • Support trading and structuring teams as a first-line quant What we’re looking for: • Deep experience in equity or hybrid derivatives modelling • Previous front-office quant experience (not second-line validation or risk) • Strong understanding of model lifecycle and regulatory context • Excellent communication skills (both technical writing and spoken) This is an environment of science and intellectuals. The firm is known globally for its attitudes and rigour more importantly, you will be surrounded by smart people deeply interested in teaching what they know, and in learning from you. My client is based in London