Penetration Tester: Web, Mobile & Infra Security

Claranet; England; On-site; GBP 55,000 - 90,000; Full time

Job summary

Claranet is seeking a Penetration Tester to independently deliver web application tests and expand testing capabilities across mobile apps, infrastructure, and social engineering. The role involves collaborating with clients, contributing to digital transformation projects, and training through partnerships.

The candidate should possess hands-on testing experience, strong reporting skills, and a proactive, client-facing approach. Travel and occasional after-hours testing may be required.

Qualifications

• Experience delivering web and mobile application testing and infrastructure testing engagements.
• Ability to produce technical reports and whitepapers.
• Willingness to travel and conduct onsite work.
• Understanding of testing methodologies and CREST framework is a plus.

Responsibilities

• Undertaking web and mobile application testing and infrastructure testing engagements
• Collaborating with clients and Claranet units on digital transformation projects
• Assisting with pre/post sales activities as required
• Producing accurate technical reports and remediation advice
• Contributing to the writing and publishing of whitepapers and advisories
• Developing and delivering webinar content

Skills

Penetration testing

Web app testing

Infrastructure testing

Client facing

Report writing

Tools

C

C++

C#

Java

Ruby

Python

Perl

Job description

Claranet is seeking a Penetration Tester to independently deliver web application tests and expand testing capabilities across mobile apps, infrastructure, and social engineering. The role involves collaborating with clients, contributing to digital transformation projects, and training through partnerships.

The candidate should possess hands-on testing experience, strong reporting skills, and a proactive, client-facing approach. Travel and occasional after-hours testing may be required.