ARCHIVED
This job listing has been archived and is no longer accepting applications.
MisuJob - AI Job Search Platform MisuJob

Penetration Tester (Senior)

Starling

Southampton, England, United Kingdom Hybrid permanent

Posted: February 2, 2026

Interested in this position?

Create a free account to apply with AI-powered matching

Quick Summary

We're looking for a Penetration Tester to join our team in Southampton, UK. The ideal candidate will have experience in penetration testing and a strong understanding of security protocols. The role involves conducting penetration testing, identifying vulnerabilities, and providing recommendations to improve security.

Job Description

Starling is the UK’s first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Read more about Our Story here.

We’re a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We’re a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices.

Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We operate a flat structure to empower you to make decisions regardless of what your primary responsibilities may be, innovation and collaboration will be at the core of everything you do. Help is never far away in our open culture, you will find support in your team and from across the business, we are in this together!

The way to thrive and shine within Starling is to be a self-driven individual and be able to take full ownership of everything around you: From building things, designing, discovering, to sharing knowledge with your colleagues and making sure all processes are efficient and productive to deliver the best possible results for our customers. Our purpose is underpinned by five Starling values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness.

Hybrid Working

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.

About the Role

As an experienced Penetration Tester you will be working with talented cyber security professionals to protect Starling customers, company assets and systems using the latest technologies and techniques.

The primary objective for this role is to collaborate with, support, and guide Starling’s engineering and operation functions to ensure our services are designed, developed and operated securely. As an experienced member of our penetration testing team you will directly interact with multiple areas of the business to understand requirements, define the scope and approach to testing (including undertaking appropriate research), and produce reporting information aligned to our risk framework.

In addition, we understand the importance of knowledge and expertise remaining current and you shall support the continued advancement of our penetration testing through research, design and implementation of new solutions, including automation.

Responsibilities

• Scoping and performing mobile, web application, cloud, and infrastructure penetration tests.
• Automation of security testing, and development of internal tooling, to achieve continuous assurance.
• Collaboration with engineering teams to facilitate secure development, including:
• Review and analysis of proposed technical solutions to identify appropriate security controls.
• Input and guidance to security related technical architecture and design decisions.
• Code review of features and critical security components.
• Practical security testing.
• Advising on remediation of security issues and processes to address root causes.

• Security assurance reviews of third-party solutions.
• Identifying and implementing improvements to the team’s internal processes and procedures.
• Review, analysis and reporting of external threats relevant to Starling systems and solutions, in the context of Starling’s desired security posture.


Requirements:
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 of mobile, web application, cloud and infrastructure penetration testing.
• Strong technical knowledge in:
• 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 ability to apply technical security knowledge to new and unfamiliar areas.
• CREST, OSCP or similar industry penetration testing qualification
• A good understanding of applied cryptographic techniques.
• Reverse engineering and exploit development capabilities.
• Experience of security testing in an agile SDLC.
• Threat modelling experience.
• Experience performing code reviews, particularly in Java and Go.
• Experience of fulfilling a client facing security consulting role.
• Excellent verbal and written communication skills.
• Experience in automation of security testing, with previous development experience desirable.

Interview process

Interviewing is a two way process and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational and we want to get the best from you, so come with questions and be curious. In general you can expect the below, following a chat with one of our Talent Team:

• First stage with the Penetration Testing Team Lead
• Second stage with additional members of the Penetration Testing team
• Final stage with Infosec Director and CISO


Benefits:
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.

• 25 days holiday (plus take your public holiday allowance whenever works best for you)
• An extra day’s holiday for your birthday
• Annual leave is increased with length of service, and you can choose to buy or sell up to five extra days off
• 16 hours paid volunteering time a year
• Salary sacrifice, company enhanced pension scheme
• Life insurance at 4x your salary & group income protection
• Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr&Mrs Smith and Peloton
• Generous family-friendly policies
• Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks
• Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing

About Us

You may be put off applying for a role because you don't tick every box. Forget that! While we can’t accommodate every flexible working request, we're always open to discussion. So, if you're excited about working with us, but aren’t sure if you're 100% there yet, get in touch anyway. We’re on a mission to radically reshape banking – and that starts with our brilliant team. Whatever came before, we’re proud to bring together people of all backgrounds and experiences who love working together to solve problems.

Starling is an equal opportunity employer, and we’re proud of our ongoing efforts to foster diversity & inclusion in the workplace. Individuals seeking employment at Starling Bank are considered without regard to race, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, physical or mental disability, military or veteran status, or any other characteristic protected by applicable law.

When you provide us with this information, you are doing so at your own consent, with full knowledge that we will process this personal data in accordance with our Privacy Notice. By submitting your application, you agree that Starling Bank will collect your personal data for recruiting and related purposes. Our Privacy Notice explains what personal information we will process, where we will process your personal information, its purposes for processing your personal information, and the rights you can exercise over our use of your personal information.

Why Apply Through MisuJob?

AI-Powered Job Matching: MisuJob uses advanced artificial intelligence to analyze your skills, experience, and career goals. Our matching algorithm compares your profile against thousands of job requirements to find positions where you have the highest chance of success. This saves you hours of manual job searching and ensures you only see relevant opportunities.

One-Click Applications: Once you create your profile, applying to jobs is effortless. Your resume and cover letter are automatically tailored to highlight the most relevant experience for each position. You can apply to multiple jobs in minutes, not hours.

Career Intelligence: Beyond job matching, MisuJob provides valuable career insights. See how your skills compare to market demands, identify skill gaps to address, and understand salary benchmarks for your experience level. Make data-driven decisions about your career path.

Frequently Asked Questions

How do I apply for this position?

Click the "Register to Apply" button above to create a free MisuJob account. Once registered, you can apply with one click and track your application status in your dashboard.

Is MisuJob free for job seekers?

Yes, MisuJob is completely free for job seekers. Create your profile, get matched with jobs, and apply without any cost. We help you find your dream job without any hidden fees.

How does AI matching work?

Our AI analyzes your resume, skills, and experience to understand your professional profile. It then compares this against job requirements using natural language processing to calculate a match percentage. Higher matches mean better fit for the role.

Can I apply to jobs in other countries?

Absolutely. MisuJob features jobs from companies worldwide, including remote positions. Filter by location or look for remote opportunities to find jobs that match your preferences.

Ready to Apply?

Join thousands of job seekers using MisuJob's AI to find and apply to their dream jobs automatically.

Register to Apply