Application Security Specialist

Application Security Specialist

Shape the Future of Secure Software Development Across a Leading Enterprise Organisation

Competitive Salary + Bonus + Car Allowance + Benefits | London | Hybrid Working

Join a growing Cyber, Risk & Security team and play a pivotal role in strengthening the security of products, platforms and services delivered across a complex European technology environment.
As an Application Security Specialist, you'll be a key member of the Secure Development Centre of Excellence (CoE), partnering with engineering teams to embed security throughout the software development lifecycle. You'll drive a security-first culture, influence development standards, and help deliver secure, resilient applications for both internal and customer-facing solutions.

Key Responsibilities:

Application Security & Assurance

• Lead application security reviews for high-risk products and services.
• Conduct and oversee SAST, DAST, fuzz testing and API security assessments.
• Perform architecture, design and code security reviews.
• Assess applications against OWASP Top 10 and other industry standards.
• Translate findings into practical remediation plans and developer guidance.

Secure Development & DevSecOps

• Support the development of secure coding standards across technologies including Java, C and C++.
• Embed security throughout the Software Development Lifecycle (SDLC).
• Design and support secure CI/CD pipeline patterns.
• Integrate SAST, DAST, SCA and security tooling into development workflows.
• Support automation of security controls and assurance activities.

Security Leadership & Developer Enablement

• Act as a subject matter expert for Application Security across the organisation.
• Deliver secure coding training, workshops and awareness sessions.
• Mentor development teams and promote security-first engineering practices.
• Drive adoption of secure development standards and methodologies.

Threat & Vulnerability Management

• Support application vulnerability management activities.
• Assist development teams with vulnerability triage and remediation planning.
• Identify recurring weaknesses and opportunities for continuous improvement.
• Monitor emerging threats, vulnerabilities and industry trends.

Secure AI Development

• Support the adoption of secure development practices for AI-enabled applications.
• Assist with controls relating to AI model security, data handling and misuse risks.
• Help development teams securely adopt emerging technologies.

Essential Experience:

• 3-5 years' experience within Application Security, Secure Development, or Software Engineering with a security focus.
• Hands-on experience conducting application security reviews and assessments.
• Strong knowledge of application security principles and secure coding practices.
• Experience working with SAST, DAST and Software Composition Analysis (SCA) tools.
• Experience integrating security controls into CI/CD pipelines.
• Strong understanding of OWASP Top 10 and common vulnerability classes.
• Experience with API and web application security.
• Knowledge of threat modelling techniques and methodologies.
• Experience working closely with software engineering teams in enterprise environments.
• Ability to read and understand code in languages such as Java, C, C++, C#, Python or similar.
• Strong understanding of shift-left security and secure development lifecycle practices.

Highly Desirable Skills:

• Fuzz testing and advanced dynamic testing techniques.
• Manual code review experience.
• DevSecOps implementation and security automation.
• Experience integrating SAST, DAST, SCA and secrets scanning tools.
• Cloud-native, microservices and serverless architecture security.
• Secure AI and data-driven application security.
• OWASP SAMM, ASVS or other security maturity frameworks.
• Experience building or supporting a Security Centre of Excellence.
• Experience working within multinational or multi-entity organisations.
• Delivery of developer-focused security training and workshops.

Qualifications:

Essential

• Degree or equivalent professional experience in:
  • Computer Science
  • Software Engineering
  • Cyber Security
  • Information Security
  • Or a related technical discipline.
• Formal training, certification or demonstrable experience within Secure Development or Application Security.

Desirable

• CSSLP (Certified Secure Software Lifecycle Professional).
• GWAPT or GWEB.
• OSCP or equivalent Offensive Security certifications.
• Microsoft Azure Security Engineer Associate.
• AWS Security Specialty.
• Google Professional Cloud Security Engineer.
• DevSecOps or CI/CD related certifications.
• ISO 27001 certifications.
• NIST CSF and NIST SSDF knowledge.

Package & Benefits

• Competitive salary
• Annual bonus
• Car allowance
• Hybrid working
• Comprehensive benefits package
• Ongoing training and professional development
• Industry-recognised certification support
• Exposure to enterprise-scale application security programmes
• Opportunity to work with modern cloud, DevSecOps and AI technologies
• Clear career progression within a growing cyber security function