Global Principal Application Security Engineer

RELX International; London Borough of Richmond upon Thames; On-site; GBP 110,000 - 170,000; Full time

Job summary

RX Global seeks a Principal Application Security Engineer to lead application security across its global technology estate. You will partner with engineering leadership to embed security by design and enable teams delivering secure software at scale.

Reporting to the CISO, this senior IC role influences security practices across cloud, APIs, microservices, containers, and modern architectures, driving governance, KPI reporting, and vulnerability management.

Qualifications

• Significant experience in Application Security, Product Security, or Security Engineering.
• Strong understanding of modern software development methodologies and engineering practices.
• Experience implementing Secure Development Lifecycle programmes.
• Experience conducting threat modelling and architecture security reviews.
• Deep understanding of application security principles, attack techniques, and risk management.

Responsibilities

• Lead the RX Application Security programme, defining and maintaining strategy, roadmap, standards, controls, and security maturity objectives.
• Drive adoption of Secure by Design principles by embedding security throughout the Secure Development Lifecycle (SDLC), including threat modelling and security architecture reviews.
• Own and mature the Application Security Posture Management capability, including management and optimisation of Aikido and related security tooling.
• Develop KPIs, dashboards, and reporting for engineering and executive stakeholders, while identifying opportunities for automation and continuous improvement.
• Oversee vulnerability management activities across applications and platforms, including findings from SAST, DAST, Software Composition Analysis, container security, Infrastructure as Code security, CI/CD security, API security reviews, and penetration testing.
• Partner with Engineering Directors, Architects, Product Leaders, and Software Engineers to promote secure coding, secure design, and developer-friendly security practices.
• Provide security guidance for cloud-native environments and modern architectures, including AWS, Azure, microservices, APIs, containers, serverless technologies, and SaaS platforms.
• Support governance, audit, compliance, risk assessment, and assurance activities while providing technical leadership and mentoring across engineering and security communities.

Skills

Application Security

Security leadership

Threat modelling

SDLC security

Tools

OWASP Top 10

SAST

DAST

SCA

Container Security

Infrastructure as Code Security

CI/CD Security

API Security

Job description

RX Global seeks a Principal Application Security Engineer to lead application security across its global technology estate. You will partner with engineering leadership to embed security by design and enable teams delivering secure software at scale.

Reporting to the CISO, this senior IC role influences security practices across cloud, APIs, microservices, containers, and modern architectures, driving governance, KPI reporting, and vulnerability management.