Technical Lead | S3 | Capital and Risk Models

Santander () is evolving from a global, high-impact brand into a technology-driven organisation, and our people are at the heart of this journey. We are driving a customer‑centric transformation that values bold thinking, innovation, and the courage to challenge what’s possible. This is more than a strategic shift. It’s a chance for driven professionals to grow, learn, and make a real difference.

Our mission is to help more people and businesses prosper. We embrace a strong risk culture and expect all professionals to take a proactive and responsible approach to risk management.

Capital and Risk Models, a sub‑domain of Enterprise Services within the Chief Information Office of Santander Technology and Operations, provides enterprise‑wide systems and support services that help run and transform the bank’s IT, data, and business capabilities. The domain looks after the calculation of PRA and ECB calculations for Credit Risk and Finance, including but not limited to IFRS9, IRB, Regulatory Capital and other Risk Metrics.

Capital and Risk Models under Enterprise Services is looking for a Software Engineer based in Milton Keynes. This is a 15‑month fixed‑term contract.

• Lead the risk team across multiple locations, providing full management of the product lifecycle (design, development, implementation, test, deployment and post‑release support).
• Mentor and develop individuals across multiple squads on design patterns, solution design, and technical integration; define fit‑for‑purpose engineering designs and solutions.
• Support change management, audit, compliance, and design assurance to meet the bank’s standards.
• Collaborate with stakeholders to understand data requirements and deliver solutions that meet business needs.
• Drive the quality and adherence to service levels for month‑end execution with a strong focus on control, performance, and automation.
• Have a working knowledge and understanding of GenAI tools.

Our people are our greatest strength. Every individual contributes unique perspectives that make us stronger as a team and as an organisation. We’re enabling teams to go beyond by valuing who they are and empowering what they bring.

• Demonstrated leadership in guiding engineering teams, setting technical standards, and collaborating with product, risk, and governance stakeholders in regulated environments to deliver resilient, auditable, and production‑ready solutions.
• Extensive experience leading the design, delivery, and operation of cloud‑native data and software platforms on AWS, with hands‑on expertise.
• Proven track record of architecting scalable and secure data pipelines and event‑driven services, with strong experience implementing Infrastructure as Code, applying least‑privilege security models through IAM, and embedding monitoring, logging, and cost‑optimisation practices.
• Experience supporting production‑related incidents until resolution.
• Experience working within financial or banking companies would be beneficial.

• Bachelor’s Degree or equivalent experience (Required).

• Terraform Infrastructure as Code (Required)
• Compute & Data Processing EC2, EMR (Required)
• S3 Data Storage (Required)
• Lambda Serverless Development (Required)
• Glue Data Integration & ETL (Required)
• Unix scripting including AWS CLI
• Step Functions Workflow Orchestration (Required)
• Adopting Agile engineering processes in Scrum/Kanban, Dev Ops, CI/CD, BDD/TDD test automation (Required)
• Cost Management & Optimisation (Preferred)

• Problem Solving and Critical Thinking (Required)
• Technical & Non‑Technical Communication (Required)
• Adaptability & Change Management (Required)
• Stakeholder Management (Required)
• Decision‑Making & Accountability (Required)
• Collaboration & Team Facilitation (Required)
• Risk Awareness & Governance Mindset (Preferred)
• Coaching & Talent Development (Preferred)
• Project Management (Preferred)

• 30 days’ holiday plus bank holidays, increasing to 31 days after 5 years service, with the option to purchase up to 5 contractual days per year.
• £6,000 car allowance per year.
• Company‑funded individual private medical…