Product, Application and Offensive Security Engineer

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Department: Data & Technology Solutions (DTS)

Reports To: SVP Security and Compliance

Location: [London/Hybrid 2 days a week in office]

Position Type: Full-Time

Role Overview

The Product, Application and Offensive Security Engineer is responsible for embedding security directly into the design, development, testing, and operation of DTS products and platforms.

This is a hands-on security engineering role. The role requires someone who can work directly with product and engineering teams, review designs, assess APIs, run threat models, test systems, coordinate penetration testing, identify vulnerabilities, and help teams remediate issues.

The role ensures DTS products, APIs, data collaboration capabilities, AI-enabled workflows, and client-facing services are designed, built, and tested securely. It also owns the practical offensive security and adversarial assurance activity needed to test DTS products from an attacker’s perspective.

The Product, Application and Offensive Security Lead will work closely with Product, Engineering, Architecture, Infrastructure, Security Operations, Privacy, Cloud and Platform Security, and the ISMS and Risk Officer to ensure security issues are identified early, fixed effectively, and tracked through governance where required.

Key Responsibilities

1. Hands-on Product and Application Security

Provide hands-on security support across DTS products and engineering teams. This includes:

Reviewing product designs, technical designs, APIs, services, and integrations.

Identifying security weaknesses in applications, workflows, and data flows.

Advising engineering teams on secure implementation.

Supporting secure design decisions during product discovery and delivery.

Helping teams resolve security issues pragmatically without creating unnecessary delivery friction.

2. Secure Software Development Lifecycle (SDLC)

Embed security into the software development lifecycle across DTS. This includes:

Defining and applying secure engineering standards.

Supporting secure coding practices.

Reviewing CI/CD security controls.

Supporting SAST, DAST, SCA, secrets scanning, dependency scanning, and container scanning.

Helping teams triage, prioritise, and remediate security findings.

Working with engineering teams to make security checks practical and repeatable.

3. Threat Modelling and Security Design Reviews

Run threat modelling and security design reviews for new and changed capabilities. This includes:

Facilitating threat modelling sessions with engineering and product teams.

Reviewing authentication and authorization designs.

Assessing API exposure, data flows, trust boundaries, and abuse cases.

Identifying risks around tenant isolation, privilege escalation, data leakage, and misuse.

Documenting key findings, recommendations, and residual risks.

4. Offensive Security and Adversarial Testing

Carry out and coordinate offensive security testing across DTS products and platforms. This includes:

Performing hands-on security testing of products, APIs, and workflows.

Coordinating external penetration tests.

Supporting red tea