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# Security Testing Consultant

- **Company:** Oscar Associates (UK) Ltd
- **Location:** London, United Kingdom
- **Salary:** £60,000 - £65,000
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Software System Penetration Testing, C++ (Programming Language), Cloud Computing, Cyber Security, Python (Programming Language), Reverse Engineering, Web Applications, Scripting, Cloud Platform System, Vulnerability Analysis
- **Published:** October 30, 2026
- **Apply:** https://www.reed.co.uk/jobs/security-testing-consultant/57507209

## About the Role

* Commercial experience delivering penetration testing engagements.
 * Hands-on experience testing web applications and infrastructure, with exposure to cloud environments and APIs.
 * Strong technical understanding of common vulnerabilities, exploitation techniques and security testing methodologies.
 * Experience producing technical reports and communicating findings to clients.
 * Ability to manage testing activities independently and take ownership of engagements.
 * A proactive approach to learning, problem-solving and developing technical capabilities.
 * Strong written and verbal communication skills., * Candidates must have the existing right to work in the UK.
 * Candidates must be able to commute into central London twice per week., * C++ Programming (C+E)
 * Incident Response
 * Infrastructure Management
 * Penetration Testing
 * Python Programming (Beginner)
 * Reverse Engineering
 * Scripting (General)
 * Testing (General)
 * Testing Skills
 * Vulnerability Assessment

## Description

A growing cyber security consultancy is hiring a hands-on penetration tester to take ownership of engagements across web applications, infrastructure, cloud platforms and APIs. You'll run engagements end to end, from scoping through to testing, reporting and client debriefs, working alongside experienced testers. There's funded certification support and scope to move into advanced offensive security areas such as AI security assessments, assumed breach and red teaming., This role is suited to someone wanting to broaden their technical range and own engagements outright, with prior hands-on experience in penetration testing

 * Test across a variety of environments, including web applications, infrastructure, cloud platforms and APIs.
 * Help clients identify vulnerabilities, understand their security risks and implement effective remediation.
 * Work alongside experienced security professionals and contribute to testing methodologies and tooling.
 * Develop expertise in more advanced areas of offensive security.

What You'll Be Doing

 * Deliver penetration testing engagements across web applications, infrastructure, cloud environments and APIs.
 * Manage engagements from initial scoping through to testing, reporting and client debriefs.
 * Identify, investigate and validate vulnerabilities, providing clear technical findings and practical remediation advice.
 * Produce accurate, high-quality reports tailored to both technical and non-technical audiences.
 * Communicate findings and recommendations directly to clients.
 * Contribute to the development of testing methodologies, processes and internal tooling.
 * Work collaboratively with experienced testers to maintain and improve the quality of security assessments.
 * Build expertise in emerging areas, including AI security assessments, assumed breach exercises and red-team operations.