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Consultant, Security Testing and Red Teaming

Consultant, Security Testing and Red Teaming

ensign infosecurity (cybersecurity) pte. ltd.
3-6 Years
SGD 6,000 - 9,000 per month
  • Posted 18 days ago
  • Be among the first 10 applicants

Job Description

Consultant, Security Testing and Red Teaming

Description

The Consultant, Security Testing and Red Teaming is a coredelivery role within the offensive security practice, responsible forindependently executing penetration testing engagements and contributing toadvanced offensive security activities.

This role has a strong emphasis on hands-on penetrationtesting across web applications, infrastructure, Active Directory, and cloudenvironments. Consultants are expected to operate with a high degree ofautonomy on scoped engagements, apply sound technical judgement, and producehigh-quality, defensible findings and reports for clients.

While penetration testing is the primary focus, Consultantsare also expected to demonstrate the curiosity and technical breadth to growinto broader offensive security disciplines over time, including adversarysimulation, red teaming, tooling development, and security research.

Roles and Responsibilities

  • Deliver end-to-end penetration testing engagements with minimal supervision, including:
  • Web application penetration testing
  • Internal and external network penetration testing
  • Active Directory security assessments
  • Cloud and hybrid environment testing
  • Mobile application penetration testing
  • IOT penetration testing
  • OT penetration testing
  • Perform manual vulnerability discovery, validation, and exploitation beyond automated scanning.
  • Identify attack paths, chain vulnerabilities, and assess real-world business impact.
  • Exercise sound judgement in exploitation depth, data handling, and risk management during testing.
  • Maintain clear, detailed testing notes, evidence, and attack logs to support reporting and quality review.
  • Produce high-quality technical findings with accurate severity assessment and actionable remediation guidance.
  • Develop structured penetration testing reports, and support client walkthroughs and debriefs.
  • Engage professionally with clients during kick-off sessions, testing clarification, and results discussions.
  • Participate in peer reviews of testing approaches and reports to uphold delivery quality standards.
  • Continuously develop technical depth across offensive security techniques, platforms, and tooling.
  • Contribute to security testing playbooks, internal knowledge sharing and peer learning.
  • Where appropriate, contribute to broader offensive security initiatives, such as:
  • Adversary simulation and red teaming exercises
  • Custom tooling, scripting, or automation
  • Internal research, labs, or capability development

Requirements

  • Offensive Security Certified Professional (OSCP) is required.
  • CREST Certified Registered Penetration Tester (CRT) is preferred.
  • Advanced or specialist certifications such as:
  • OSWE, OSEP, OSED
  • MCRTA, CRTO
  • eMAPT
  • Approximately 3 to 5 years of hands-on penetration testing experience in consulting, internal security, or equivalent practical environments.
  • Strong understanding of penetration testing methodologies, rules of engagement, and ethical hacking principles.
  • Solid technical foundations in:
  • TCP/IP networking and common protocols
  • Windows and Linux operating systems
  • Web application architecture and common vulnerability classes
  • Demonstrated experience testing:
  • Web applications, including authentication, authorization, and business logic flaws
  • Network and infrastructure environments
  • Active Directory domains
  • Mobile applications
  • Proficiency with common penetration testing tools (e.g. Burp Suite, Nmap, Metasploit, BloodHound).
  • Experience with scripting or programming (e.g. Python, PowerShell, Bash) to support testing and automation.
  • Exposure to cloud security testing (AWS, Azure, GCP) and modern identity platforms.
  • Experience with post-exploitation, lateral movement, and attack path analysis.
  • Demonstrated interest in expanding beyond traditional penetration testing into broader offensive security and red teaming.
  • Ability to clearly communicate technical findings in written reports and verbal discussions.
  • Strong professionalism, integrity, and attention to detail.

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