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- Tasks: Conduct high-quality penetration tests across various platforms and mentor junior testers.
- Company: Join Instil, an award-winning tech company that values innovation and teamwork.
- Benefits: Enjoy flexible working hours, competitive salary, and a comprehensive benefits package.
- Why this job: Make a real impact in cybersecurity while working on diverse and challenging projects.
- Qualifications: CHECK Team Member status and 2+ years of penetration testing experience required.
- Other info: Be part of a supportive culture that prioritises your growth and wellbeing.
The predicted salary is between 43200 - 72000 £ per year.
We are looking for a Senior Penetration Tester with CHECK to join our growing team. You will play a critical role in delivering high-quality penetration testing engagements across infrastructure, cloud, web, and mobile applications for a diverse range of clients, including software, fintech, manufacturing, engineering, legal, and public sector organisations. This is a hands-on role where your expertise will help identify and remediate security weaknesses, while contributing to the development of our methodologies and mentoring junior testers. If you're passionate about offensive security and want to work on varied, challenging projects in a supportive environment, we'd love to hear from you.
Responsibilities
- Deliver high-quality penetration testing engagements across infrastructure, cloud, web, and mobile applications.
- Identify and remediate security weaknesses and contribute to the development of testing methodologies.
- Mentor junior testers and share knowledge with the team.
Essential Skills
- CHECK Team Member (CTM) status
- Current UK Security Clearance
- At least 2+ years of penetration testing experience
- Strong experience with web application and network penetration testing methodologies
- In-depth 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, and Kali Linux
- Knowledge of scripting languages (Python, Shell, etc.)
Nice-to-Have
- CHECK Team Lead (CTL) status (Infrastructure or Applications)
- Relevant certifications (OSCP, Cyber Scheme)
- Experience with Hack the Box or Capture the Flag simulations
Why Join Instil?
- Recognition That Matters: A discretionary annual performance bonus that rewards your impact and contribution to our success
- Flexibility Built In: Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters
- Financial Security: A highly competitive pension scheme with generous employer contributions, private healthcare, and life assurance
- Health & Wellbeing: Employee Assistance Programme, mental health support, cycle-to-work scheme, and regular social events to keep our culture vibrant
- Time to Recharge: 35 days holiday, enhanced maternity pay, and family-first policies
- Learning Never Stops: From courses to certifications, we’ll invest in your development so you can keep growing and shaping what’s next
- Community & Culture: Opportunities to volunteer, give back, and be part of initiatives that make Instil a truly inclusive and connected workplace
And that’s just the start; drop us a note to find out more.
Company Description
Instil has been delivering world-class software engineering and technology solutions for over 20 years, trusted by global brands to solve complex challenges and drive innovation. From modernising legacy systems to building cutting-edge applications, we help our clients navigate an ever-changing digital landscape with confidence and agility.
We’re proud to be an award-winning employer, reflecting how our people are at the heart of everything we do: Recognised as a Great Place to Work for three consecutive years, and in 2024 ranked in the Top 20 Best Workplaces in the UK for medium-sized companies. Winner of Company of the Year at the Digital DNA Awards 2022, celebrating excellence in Northern Ireland's tech sector. Driven by a love for technology and a commitment to excellence, we bring together people who want to make a difference. We’ll support your journey, because your success is part of ours.
Senior Penetration Tester in London employer: Instil
Contact Detail:
Instil Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Penetration Tester in London
✨Tip Number 1
Network like a pro! Get involved in local cybersecurity meetups or online forums. Connecting with other professionals can lead to job opportunities that aren't even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your penetration testing projects, including any Hack the Box or Capture the Flag challenges you've tackled. This gives potential employers a taste of what you can do.
✨Tip Number 3
Don’t just apply; engage! When you find a role that excites you, reach out to someone at the company on LinkedIn. A friendly message can make you stand out and show your genuine interest.
✨Tip Number 4
Apply through our website! We love seeing applications directly from candidates who are passionate about joining our team. Plus, it shows you're serious about wanting to be part of our journey.
We think you need these skills to ace Senior Penetration Tester in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Penetration Tester role. Highlight your CHECK status, relevant experience, and any specific tools you've used like BurpSuite Pro or Nmap. We want to see how your skills match what we're looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for offensive security and mention any unique projects you've worked on. Let us know why you’re excited about joining our team at Instil and how you can contribute.
Showcase Your Methodologies: In your application, don’t forget to mention your approach to penetration testing. We love seeing how you identify and remediate security weaknesses, so give us a glimpse into your thought process and methodologies.
Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of applications and ensures you get all the latest updates. Plus, it’s super easy to do!
How to prepare for a job interview at Instil
✨Know Your Tools Inside Out
Make sure you're well-versed in the tools mentioned in the job description, like BurpSuite Pro and Nmap. Familiarity with these tools will not only help you answer technical questions but also demonstrate your hands-on experience.
✨Showcase Your Methodologies
Be prepared to discuss your approach to penetration testing. Highlight specific methodologies you've used in past projects, especially for web applications and cloud environments. This shows that you can deliver high-quality engagements as expected.
✨Prepare for Scenario-Based Questions
Expect scenario-based questions where you'll need to identify security weaknesses or suggest remediation strategies. Practise articulating your thought process clearly, as this will showcase your problem-solving skills and depth of knowledge.
✨Emphasise Mentorship Experience
Since mentoring junior testers is part of the role, be ready to share examples of how you've supported others in your previous positions. This will highlight your leadership qualities and commitment to team development, which is crucial for a senior position.
