Principal Penetration Tester

Job not on LinkedIn

Yesterday

Apply Now

Receive Emails with Similar Jobs

Instil

WebsiteLinkedInAll Job Openings

Cybersecurity • Artificial Intelligence • B2B

Instil is a technology consultancy that helps companies design, build and secure category-defining software. They provide product development and cloud-native engineering, embed cyber security practices to protect products and support compliance, and deliver AI & data services to unlock insights and automation; they also offer accelerated training for developers. Instil focuses on helping other organisations (primarily B2B technology brands) modernise digital experiences and adopt secure, data-driven engineering practices.

51 - 200 employees

Founded 2005

🔒 Cybersecurity

🤖 Artificial Intelligence

🤝 B2B

📋 Description

• Lead and execute penetration tests across infrastructure, cloud, web, and mobile applications. • Manage end-to-end engagements: from scoping and kick-off sessions to delivery and client debriefs. • Produce detailed, actionable reports outlining vulnerabilities and tailored remediation steps. • Stay ahead of emerging threats by researching new offensive techniques and integrating them into our methodology. • Automate repetitive tasks and streamline testing processes through scripting. • Mentor and coach junior testers, supporting their technical growth and career development. • Enhance tools and methodologies, ensuring our services remain cutting-edge. • Support pre-sales efforts as a subject-matter expert in penetration testing. • Communicate findings effectively to both technical and non-technical stakeholders. • Contribute to thought leadership through blogs, white papers, or speaking engagements.

🎯 Requirements

• CHECK Team Lead (CTL) status - Infrastructure preferred; Applications also considered. • Current UK SC Clearance. • Minimum 5 years’ penetration testing experience, with a proven track record of complex engagements. • Proven experience in cloud security reviews (AWS, Azure, GCP). • Deep expertise in web, mobile, and network penetration testing methodologies. • Advanced knowledge of operating systems (Linux, Windows, Active Directory). • Familiarity with cloud environments and ability to perform cloud security reviews. • Proficiency with tools such as BurpSuite Pro, Nmap, Nessus, Metasploit, and Kali Linux. • Strong scripting skills (Python, Shell, etc.). • Excellent communication and technical report writing skills. • Additional certifications: OSCP, CSTL/CCT, Cyber Scheme, CREST (Nice-to-Have). • UK Cyber Security Council Chartership (Principal or above) (Nice-to-Have). • Experience with Hack The Box or Capture the Flag simulations (Nice-to-Have). • Exposure to advanced testing techniques and red team engagements (Nice-to-Have).

🏖️ Benefits

• A discretionary annual performance bonus that rewards your impact and contribution to our success. • Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters. • A highly competitive pension scheme with generous employer contributions, private healthcare, and life assurance for peace of mind. • Employee Assistance Programme, mental health support, cycle-to-work scheme, and regular social events to keep our culture vibrant. • 35 days holiday, enhanced maternity pay, and family-first policies so you can focus on what matters most. • From courses to certifications, we’ll invest in your development so you can keep growing and shaping what’s next. • Opportunities to volunteer, give back, and be part of initiatives that make Instil a truly inclusive and connected workplace.