Junior Penetration Tester

About Us

Sophos is a cybersecurity leader defending 600,000 organizations globally with an AI-driven platform and expert-led services. Sophos meets organizations wherever they are in their security maturity and grows with them to defeat cyberattacks. Its solutions combine machine learning, automation, and real-time threat intelligence with frontline human expertise from Sophos X-Ops to deliver advanced, 24/7 threat monitoring, detection, and response.

Role Summary

As a security company, Sophos takes its own security very seriously and has a Cyber Security team which focuses on protecting our own products, systems and infrastructure. We’ll need you to contribute to the continual improvement of our security posture through the testing of Sophos applications and infrastructure. This role is not customer facing which means you not only get to perform tests but also see the impact of your findings as you help the teams design and architect resolutions to the issues you find.

The ideal candidate will have real-world experience in a Red Team and previously worked on all stages of penetration testing from scoping to reporting. You’ll need to be highly motivated, have an innovative mind-set and a good attention to detail. You will need to stay up to date with the latest techniques and threats and apply this knowledge to help protect Sophos and our customers.

This a great opportunity to help secure a world-leading cybersecurity company. As you’d expect you’ll be joining an organization that takes security seriously. You will become a key member of the Cyber Security team working with some world-leading experts from across the company in a fast-paced and varied environment where security is a priority.

What You Will Do (Duties and Responsibilities)

• Organize, plan and deliver penetration tests against Sophos web applications across a wide range of technologies.
• Organize, plan and deliver penetration tests against the Sophos infrastructure including on-premise networks, AWS/Azure and virtual environments.
• Use AI-assisted workflows (including internal agents/skills where available) to augment penetration testing activities and improve coverage and efficiency, with appropriate oversight and review.
• Assist in the scoping, planning and delivery of pentests by 3rd party vendors.
• Disseminate results to teams throughout the business.
• Work closely with the wider Cybersecurity team to develop common goals and outcomes.

What You Will Bring (Experience and Qualifications)

• A solid background in both application and infrastructure penetration testing.
• Familiarity with common web technologies (PHP, Javascript, API etc).
• Good knowledge of offensive techniques, OWASP & MITRE ATT&CK frameworks.
• Experience working with or assessing systems that incorporate AI or LLMs, including an understanding of common AI‑related security risks and abuse scenarios.
• Experience in delivery of security testing projects.
• Practical knowledge of AWS technologies (S3, EC2, IAM, Lambda etc).
• Good interpersonal & networking skills.
• Industry recognised ethical hacking qualifications: OSCP, GPEN or equivalent.

Ready to Join Us?

At Sophos, we believe in the power of diverse perspectives to fuel innovation. Research shows that candidates sometimes hesitate to apply if they don't check every box in a job description. We challenge that notion. Your unique experiences and skills might be exactly what we need to enhance our team. Don't let a checklist hold you back – we encourage you to apply.

What's Great About Sophos?

• Sophos operates a remote-first working model, making remote work the primary option for most employees. However, some roles may necessitate a hybrid approach.
• Our people – we innovate and create, all of which are accompanied by a great sense of fun and team spirit.
• Employee-led diversity and inclusion networks that build community and provide education and advocacy.
• Annual charity and fundraising initiatives and volunteer days for employees to support local communities.
• Global employee sustainability initiatives to reduce our environmental footprint.
• Global fitness and trivia competitions to keep our bodies and minds sharp.
• Global wellbeing days for employees to relax and recharge.
• Monthly wellbeing webinars and training to support employee health and wellbeing.

Our Commitment To You

We’re proud of the diverse and inclusive environment we have at Sophos, and we’re committed to ensuring equality of opportunity. We believe that diversity, combined with excellence, builds a better Sophos, so we encourage applicants who can contribute to the diversity of our team.

Data Protection

If you choose to explore an opportunity, and subsequently share your CV or other personal details with Sophos, these details will be held by Sophos for 12 months in accordance with our Privacy Policy and used by our recruitment team to contact you regarding this or other relevant opportunities at Sophos.