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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Penetration Tester - **Company:** Starling - **Location:** Southampton, UK - **Experience:** Expert - **Salary:** £51,342.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Amazon Web Services, Apple IOS, Software System Penetration Testing, Cloud Computing, Cloud Computing Security, Code Review, Cyber Security, Python (Programming Language), Secure Coding, Web Application Security, Mobile Security, Web Applications, Kubernetes - **Published:** July 22, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5808180405 ## About the Role We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. In Technology, we're asking that you attend the office a minimum of 1 day per week., We're open-minded when it comes to hiring and we care more about aptitude and attitude than specific experience or qualifications. Ideally, we would like: * 5+ years technical information security experience. * Experience in mobile, web application, cloud and infrastructure penetration testing. * Technical knowledge - we don't expect mastery of every area, but are looking for a good foundation in the following domains: * Mobile security (iOS and Android) * Web application security * Networking and associated protocols * Cloud security (AWS and GCP) * Containers and Kubernetes A desire to learn, and the ability to apply technical security knowledge to new and unfamiliar areas.Penetration testing qualifications (e.g. CREST Certified Tester, OSCP) or equivalent industry experience.Experience performing code reviews or code-assisted testing, particularly in Java and Go.Experience in automation of security testing (e.g. using Python or Go).Excellent verbal and written communication skills. ## Description As an experienced Penetration Tester at Starling, you'll be joining an established team, working with talented cyber security professionals to ensure our services are designed, developed and operated securely. This is a collaborative role - you'll directly interact with multiple areas of the business to understand requirements, conduct research, perform security testing, and report issues aligned to our risk framework. Being an internal tester, you'll gain a strong understanding of how technology works at Starling to enable in-depth testing. You'll also support remediation processes, seeing your findings lead to tangible security improvements. We understand the importance of knowledge and expertise remaining current, so we'll actively support your advancement through research and training. In turn, you'll help us continuously improve our processes, methodologies and tools to maintain the highest standard of testing. Responsibilities * Scoping and performing mobile, web application, cloud and infrastructure penetration tests. * Collaborating with engineering teams to facilitate secure development, including: * Reviewing and analysing proposed technical solutions to identify appropriate security controls. * Conducting code reviews of features and critical security components. * Performing in-depth practical security testing. * Advising on the remediation of security issues and identifying solutions to address root causes. Automating security testing and developing internal tooling to achieve continuous assurance.Identifying and implementing improvements to the team's internal processes and procedures.Mentoring less-experienced team members, leading by example in technical assessments, and promoting a collaborative approach to security across Starling. ## Related Videos - [Xcode development redefAIned](https://www.wearedevelopers.com/videos/100195-xcode-development-redefained) - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [Are Code Reviews Worth It? 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