Offensive Security Consultant

GTS Consulting; Singapore; On-site; SGD 55,800 - 89,280; Full time

Job summary

GTS Consulting in Singapore is seeking an experienced Offensive Security Consultant to join our cybersecurity team on site. You will perform comprehensive security assessments, identify vulnerabilities across web, network, mobile, and API environments, and deliver actionable remediation recommendations to clients.

The role requires hands-on testing, strong reporting skills, and the ability to manage multiple projects to deadlines.

Qualifications

• Bachelor’s degree in Information Security or related field.
• Proven experience as Penetration Tester or Offensive Security Consultant.
• Hands-on testing across web, network, mobile, and applications.
• Experience with automated tools and manual testing methods.
• Strong analytical and reporting skills.

Responsibilities

• Conduct penetration testing on web apps, networks, mobile apps, APIs, and thick clients.
• Perform source code reviews to identify vulnerabilities.
• Simulate real-world attacks to assess security risks.
• Develop and execute testing methodologies using manual and automated techniques.
• Prepare clear technical reports with remediation recommendations.
• Stay current with cybersecurity threats, tools, and best practices.
• Collaborate with clients and internal teams to communicate findings.
• Share knowledge with colleagues and contribute to team development.
• Manage multiple projects and meet deadlines.

Skills

Penetration testing

Vulnerability assessment

Technical reporting

Independent work

Education

Bachelor's degree in Information Security/Computer Science/Engineering/Information Systems

Tools

Automated security tools

Job description

Offensive Security Consultant (Onsite – Singapore)

We are seeking an experienced Offensive Security Consultant to join our growing cybersecurity team in Singapore. In this role, you will perform comprehensive security assessments, identify vulnerabilities across various environments, and help clients strengthen their security posture through hands‑on penetration testing and actionable recommendations.

Key Responsibilities

• Conduct penetration testing on web applications, networks, mobile applications, APIs/web services, and thick client applications.
• Perform source code reviews and identify security vulnerabilities.
• Simulate real-world cyberattacks to assess security risks and uncover weaknesses.
• Develop and execute penetration testing methodologies using both manual and automated testing techniques.
• Prepare clear, detailed, and professional technical reports with remediation recommendations.
• Stay current with the latest cybersecurity threats, tools, techniques, and industry best practices.
• Collaborate with internal teams and clients to communicate findings and support remediation efforts.
• Share technical knowledge with colleagues and contribute to continuous team development.
• Manage multiple projects while delivering high-quality work within deadlines.

Requirements

• Bachelor's degree in Information Security, Computer Science, Engineering, Information Systems, or a related field.
• Proven experience as a Penetration Tester, Offensive Security Consultant, or similar cybersecurity role.
• Strong hands‑on experience with web, network, mobile, and application penetration testing.
• Solid understanding of common vulnerabilities, exploit techniques, and secure coding principles.
• Experience using both automated security tools and manual testing methodologies.
• Strong analytical, problem‑solving, and technical reporting skills.
• Ability to work independently, manage multiple priorities, and meet tight deadlines.

Preferred Qualifications

• Offensive security certifications such as OSCP, OSWE, CREST, or CRTO.
• Experience conducting security assessments across diverse environments.
• Familiarity with ISO/IEC 27001 standards or working within CREST-accredited environments.
• Demonstrated commitment to continuous learning and participation in the cybersecurity community.
• Experience mentoring or sharing technical knowledge with team members.

Salary

• SGD 5,000–8,000 per month

If you are passionate about offensive security, enjoy solving complex technical challenges, and want to work on a wide range of penetration testing engagements, we would love to hear from you.