Nextmark

Penetration Tester

Contractor · Remote · 7 openings

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Key Responsibilities

  • Conduct comprehensive penetration tests and simulated attacks on networks, applications, and systems to uncover vulnerabilities.
  • Perform thorough vulnerability assessments, analyze findings, and prioritize risks based on impact and exploitability.
  • Collaborate closely with stakeholders to define testing scopes and ensure alignment with business objectives.
  • Document detailed findings and communicate technical reports to both technical and non-technical audiences.
  • Develop actionable remediation strategies and provide expert guidance to teams for implementation.
  • Stay at the forefront of emerging threats, attack vectors, and security best practices.
  • Contribute technical insights to ongoing process improvements and security posture enhancements.

Required Skills & Qualifications

  • Demonstrated expertise in ethical hacking, penetration testing, and vulnerability assessment methodologies.
  • Strong knowledge of security frameworks, protocols, and industry-standard tools (e.g., Metasploit, Burp Suite, Nmap).
  • Proven ability to deliver clear, concise, and actionable written and verbal communication.
  • Solid understanding of network, application, and cloud security concepts.
  • Experience conducting social engineering and physical security assessments is a plus.
  • Analytical problem solver with a keen eye for detail and a proactive approach to security.
  • Relevant certifications such as OSCP, CEH, or GPEN are highly desirable.

Preferred Qualifications

  • Experience with red teaming or advanced threat simulation engagements.
  • Background in security consulting or working with enterprise clients.
  • Continuous learner who is passionate about advancing cybersecurity skills and knowledge.

$30–$90/hr

Remote