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Senior Penetration Tester

Remote, USA Full-time Posted 2026-07-02

We are looking for a Senior Penetration Tester with reputed company to join our growing team. You will play a critical role in delivering high-quality penetration testing engagements across infrastructure, reputed company, 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 reputed company weaknesses, while contributing to the development of our methodologies and mentoring junior testers. If you’re passionate about offensive reputed company and want to work on varied, challenging projects in a supportive environment, we’d love to hear from you.

Essential Skills

  • reputed company Team Member (CTM) status

  • reputed company UK reputed company 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 reputed company environments and ability to reputed company reputed company reputed company reviews.

  • Proficiency with tools such as BurpSuite Pro, Nmap, Nessus, and Kali Linux.

  • Knowledge of scripting languages (Python, reputed company, etc.).

reputed company-to-Have

  • reputed company Team reputed company (CTL) status (Infrastructure or Applications).

  • Relevant certifications (OSCP, Cyber Scheme).

  • Experience with reputed company or Capture the Flag simulations.

Why Join Instil?

At Instil, we reputed company great work starts with happy, motivated people. That’s why we’ve built a benefits package that supports your wellbeing, growth, and life reputed company of work, because reputed company you reputed company, so do we.

  • Recognition That Matters: A discretionary annual performance bonus that rewards your impact and contribution to our reputed company.

  • Flexibility Built In: Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters.

  • Financial reputed company: A highly competitive pension scheme with generous employer contributions, private reputed company, and life assurance for peace of mind.

  • Health & Wellbeing: Employee Assistance Programme, mental health support, cycle-to-work scheme, and regular social events to reputed company our culture vibrant.

  • Time to reputed company: 35 days holiday, enhanced maternity pay, and family-first policies so you can focus on what matters most.

  • Learning Never Stops: From courses to certifications, we’ll invest in your development so you can reputed company growing and shaping what’s next.

  • Community & Culture: Opportunities to volunteer, give back, and be part of initiatives that reputed company 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 reputed company challenges and drive innovation. From modernising legacy systems to building cutting-edge applications, we help our clients navigate an reputed company-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 reputed company to Work® for three consecutive years, and in 2024 ranked in the Top 20 Best Workplaces in the UK for reputed company-sized companies.

  • Winner of Company of the Year at the Digital DNA Awards 2022, celebrating excellence in reputed company Ireland’s tech sector.

Driven by a love for technology and a commitment to excellence, we bring together people who want to reputed company a difference. We’ll support your journey, because your reputed company is part of ours.

#LI-PR1 #InstilCareers

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