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SR2 | Socially Responsible Recruitment | Certified B Corporation™

Senior AI Architect

Hybrid

Windsor, United kingdom

Senior

Freelance

05-03-2026

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Skills

Python Architecture Machine Learning Microservice

Job Specifications

Senior AI Architect (Contract) – FinTech AI Implementation

We are supporting a UK lending platform entering the next phase of its AI underwriting programme and are looking to engage a Senior AI Architect for a short, high-impact delivery sprint.

The organisation has already developed a working AI underwriting proof of concept and is now moving into the production hardening and pilot stage. The core logic is in place – this phase focuses on governance, audit readiness, architectural control and controlled shadow-mode deployment rather than greenfield development.

Start: Within 2–4 weeks

Duration: 4–6 week sprint

Day Rate: £600 - £800 (outside)

Location: Predominantly onsite (approx. 75%)

The Role

We are looking for a hands-on Senior AI Architect who still codes daily. You will help refactor and productionise existing machine learning models while implementing the architectural and governance controls required for deployment in a regulated financial environment.

Key Experience

8+ years software engineering experience
4+ years building production ML systems
Experience in credit risk, underwriting, fraud, or fintech environments
Proven delivery of ML systems in regulated financial services
Strong Python engineering capability
Experience with explainability frameworks (e.g. SHAP)
API-first microservice architecture
Strong understanding of governance, model auditability, and regulatory considerations

Key Responsibilities

Refactor and productionise existing ML models
Define model and rule versioning frameworks
Implement explainability at decision level
Establish architectural and governance controls
Lead engineering direction and prepare the platform for a 14-day shadow-mode deployment

This is a focused engagement with a clear outcome, ideal for a senior engineer who enjoys stabilising and operationalising AI systems ahead of live rollout.

If you are available in the coming weeks and have experience deploying AI/ML within regulated fintech environments, I’d welcome a conversation.

About the Company

Built to Make an Impact. We exist to harness the power of recruitment to create meaningful change across the world. Our mission is simple but profound: to connect purpose-driven talent with industries that shape a better future. From driving innovation in Tech for Impact, advancing the global Clean Energy transition, to empowering Central Government Public Services, we are a Global Recruitment Group committed to making an impact and leaving a positive legacy. Why We Exist We believe recruitment should do more than fil... Know more