Security tester

LA International; Croydon; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading security solutions provider is seeking a Security Tester to conduct manual security testing, mentor team members, and collaborate on security policies. The role is remote with occasional travel to Croydon and requires expertise in security standards and testing tools. Suitable candidates will have significant experience in security roles and security clearance may be required.

Qualifications

• Strong understanding of security standards is mandatory.
• Experience with SAST/DAST tools and Cloud Security platforms.
• Must be familiar with Secure-by-Design principles.

Responsibilities

• Conduct Security Testing using SAST and DAST tools.
• Collaborate with Cyber Security Managers.
• Mentor testers in application security testing.

Skills

Understanding of security standards including OWASP, NIST SP 800-53

Experience with SAST/DAST tools

Familiarity with Secure-by-Design principles

Experience with penetration testing

Proficiency in JIRA and SharePoint

Tools

JIRA

SharePoint

Cloud Security platforms (AWS, Azure)

Job description

Role: Security tester (manual)
Rate: Outside IR35
Location: Remote with occasional travel to Croydon
Duration: 6 months initially
SC clearance or eligible

Key Responsibilities

• Conduct Security Testing using SAST and DAST tools
• Collaborate with Cyber Security Managers and Governance teams to ensure alignment with organisational security policies and standards
• Mentor and upskill team testers in application security testing and automation
• Track and report on security metrics and KPIs, including vulnerability trends and remediation outcomes
• Integrate security testing into CI/CD pipelines, supporting shift‑left strategies and DevSecOps practices

Required Skills & Experience

• Strong understanding of security standards including OWASP, NIST SP 800‑53, ISO 27001, and CIS Benchmarks
• Experience with SAST/DAST tools and Cloud Security platforms (AWS, Azure)
• Familiarity with Secure‑by‑Design principles and organisational security policies
• Experience with penetration testing, risk assessment, and compliance testing
• Proficiency in tools such as JIRA, SharePoint, and vulnerability management platforms

Desirable Attributes

• Ability to interpret and apply OWASP and NIST security principles across diverse project environments
• Strong stakeholder engagement and communication skills
• Experience in developing deployment checklists and decision trees for secure tool usage
• Certifications such as CREST CRT, OSCP, CEH, or SANS are highly desirable

Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Successful applicants will be required to be security‑cleared prior to appointment, which can take up to a minimum of 10 weeks.