# Senior Penetration Tester

Locale: `en`

Source: `/en/careers/senior-penetration-tester/`

Summary: Lead offensive security operations on complex systems: attack simulation, report quality, and team mentoring.

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1. [Overview](/en/careers/senior-penetration-tester/#topic-overview)

STH Careers

Full-time (Hybrid)
              Senior and Technical Lead

# Senior Penetration Tester

Lead complex penetration testing engagements, red team simulations, and technical mentorship.

![Illustration of a senior penetration tester leading an offensive security operation](/assets/generated/careers/role-senior-pentester.webp)

Lead offensive security operations on complex environments, design realistic attack simulations, oversee technical report quality, and mentor team members across engagements.

## Key Responsibilities

- Lead penetration testing engagements on complex microservices, cloud-native architectures, Active Directory, and AI systems.
- Design objective-based red teaming scenarios and adversary simulations aligned with the MITRE ATT&CK framework.
- Perform technical peer review of reports and ensure rigorous verification of proof-of-concept evidence.
- Develop custom tooling, exploits, and automation workflows to enhance team testing capabilities.
- Mentor team members and participate in technical debriefs with client executives and engineering leads.

## Qualifications and Skills

- At least 3 to 5 years of in-depth offensive security and penetration testing experience.
- Deep technical mastery in web, mobile, cloud infrastructure, Active Directory, and advanced API security.
- Knowledge of adversary tactics, privilege escalation, binary exploitation, reverse engineering, or evasion techniques.
- Strong English communication and report authoring skills, capable of explaining complex findings clearly.
- Hold advanced certifications such as OSCP, OSEP, OSWE, CRTO, GXPN, or equivalent.
- Demonstrated track record in CTF competitions, CVE discovery, or security research publication is a significant plus.

## Growth Opportunities

- Influence company-wide offensive testing methodologies and toolchains.
- Dedicated allocation for security research and custom tooling development.
- Full support for top-tier international certifications and cybersecurity conferences.

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Last updated 16 October 2026