Principal Security Engineer, SIRT Lead – Equity & Growth

VulnU; Singapore; On-site; SGD 200,000 - 280,000; Full time

Benefits offered by this job

Equity

Job summary

F5 is seeking a Principal Security Engineer for the PSIRT organization in Singapore. You will lead complex investigations, coordinate remediation, and deliver actionable security guidance across product lines.

Global collaboration with cross-functional teams, mentoring, and building a security-aware culture are core parts of the role. The role requires deep expertise in vulnerability management, threat intelligence, and cloud security, with hands-on experience in network security, tooling, and

Qualifications

• Extensive incident response experience in production environments.
• Strong vulnerability management and risk prioritization knowledge.
• Expertise in cloud security across AWS/Azure/GCP.
• Proficient in scripting (Python) and code-level vulnerability analysis.

Responsibilities

• Lead security incident investigations and remediation efforts.
• Coordinate vulnerability management workflows with cross-functional teams.
• Publish security advisories and mitigations with Engineering and Legal.
• Mentor engineers and improve incident response processes.

Skills

Security incident response

Vulnerability management

Cloud security

Python

Networking

Education

Bachelor’s degree or equivalent

Tools

WAF

Firewalls

IDS/IPS

Docker

Kubernetes

Terraform

Ansible

Job description

F5 is seeking a Principal Security Engineer for the PSIRT organization in Singapore. You will lead complex investigations, coordinate remediation, and deliver actionable security guidance across product lines.

Global collaboration with cross-functional teams, mentoring, and building a security-aware culture are core parts of the role. The role requires deep expertise in vulnerability management, threat intelligence, and cloud security, with hands-on experience in network security, tooling, and