CAT1-Cleared Penetration Tester for Govt & Critical Infra

INFINITY CYBERSEC PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

INFINITY CYBERSEC PTE. LTD. in Singapore seeks a Penetration Tester with CAT1 clearance to lead VAPT across government and critical infrastructure sectors.

You will perform full-scope attacks on networks, applications, cloud, and OT, and bypass advanced defenses to expose actionable remediation strategies. Candidates must hold CAT1 clearance and OSCP/CREST, have hands-on exploitation skills, and experience with GovTech cybersecurity frameworks.

Qualifications

• CAT1 clearance required and active government-security experience.
• Certification and hands-on pentest experience in government-grade environments.
• Minimum 2 years in professional pentesting.

Responsibilities

• Lead VAPT engagements for Singapore government and critical infrastructure.
• Execute full-scope attacks: networks, apps, cloud, OT.
• Bypass advanced defenses and deliver remediation strategies.
• Develop exploit tooling and custom malware to evade EDR/XDR.

Skills

CAT1 Security Clearance

2+ years pentesting

Threat Emulation

Education

CAT1 Clearance

OSCP or CREST CRT/CCT

2+ years pentesting experience

Tools

Metasploit Pro

Cobalt Strike

Burp Suite Pro

PowerSploit

Volatility

Wireshark

CHIRP ICS

HackRF One

Proxmark3

Pacu (AWS)

Job description

INFINITY CYBERSEC PTE. LTD. in Singapore seeks a Penetration Tester with CAT1 clearance to lead VAPT across government and critical infrastructure sectors.

You will perform full-scope attacks on networks, applications, cloud, and OT, and bypass advanced defenses to expose actionable remediation strategies. Candidates must hold CAT1 clearance and OSCP/CREST, have hands-on exploitation skills, and experience with GovTech cybersecurity frameworks.