Cybersecurity Penetration Tester

2 weeks ago

London, Greater London, United Kingdom Hamilton Barnes Associates Limited Full time

We are seeking a highly skilled OT Penetration Tester to conduct comprehensive security assessments of industrial control systems (ICS), SCADA systems, and other critical infrastructure components. Our ideal candidate will have in-depth knowledge of OT systems, protocols, and cybersecurity best practices, along with strong ethical hacking and risk assessment skills.

Key Responsibilities:

  • Conduct thorough penetration testing of OT environments, including PLCs, RTUs, HMIs, and DCS.
  • Identify and exploit vulnerabilities in OT protocols such as Modbus, DNP3, OPC, and Profinet.
  • Perform risk assessments to evaluate the potential impact of security breaches on critical infrastructure.
  • Develop and execute detailed penetration testing plans, methodologies, and scripts tailored for OT systems.
  • Collaborate with OT engineers, IT professionals, and other stakeholders to understand system architectures and identify security weaknesses.
  • Document and present assessment findings, along with actionable recommendations for remediation, to stakeholders.
  • Stay updated on the latest OT security threats, vulnerabilities, and attack techniques.
  • Adhere to ethical and professional standards, ensuring the safety and reliability of critical infrastructure systems.

Qualifications:

  • Relevant certifications, such as GICSP, GIAC Cyber Security OT, CSSA, CISSP, ISA/IEC 62443, CEH, CSSP, CAP, or OSCP.
  • Proven experience in conducting penetration tests on OT/ICS environments.
  • Strong understanding of OT systems, including PLCs, RTUs, HMIs, and DCS.
  • Proficiency in OT protocols such as Modbus, DNP3, OPC, and Profinet.
  • Excellent risk assessment and vulnerability analysis skills.
  • Effective communication skills for documenting findings and presenting reports.
  • Commitment to continuous learning and staying updated on emerging OT security trends.

Preferred Qualifications:

  • Advanced certifications in OT security.
  • Experience with specific industrial sectors (e.g., energy, manufacturing, water treatment).
  • Familiarity with regulatory standards such as NIST SP 800-82 and IEC 61850.

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