Information Technology Security Engineer

Ascendion; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Ascendion is seeking an IT Security Engineer to implement, operate, and support security controls for mission-critical systems within a secured environment in Singapore.

The role covers Day 1 security (build/project implementation) and Day 2 security (operations/production support), collaborating with Security Leads, Infra, System, and Software teams to ensure alignment with government security policies and standards.

Qualifications

• Degree in Computer Science / Cybersecurity / Information Security or equivalent.
• 3–7 years of IT experience in cybersecurity or infrastructure security.
• Familiarity with Singapore Government security policies (IM8 preferred). Singaporean profiles only.
• Hands-on experience with IAM and access control, security tooling (SAST/DAST/SIEM), CI/CD and DevSecOps.

Responsibilities

• Implement security architecture and controls as designed by Security Leads/Architects.
• Support compliance with government security policies and standards (IM8, WOG, PDPA).
• Develop and maintain secure CI/CD pipelines (SAST/DAST/SCA, container scanning).
• Assist in risk assessments, vulnerability management, and security testing (VA/PT).
• Support incident response, logging, monitoring, and access control administration (RBAC, MFA).

Skills

IT security experience

Communication skills

Documentation

Problem solving

Collaborative teamwork

Security standards understanding

Education

Bachelor's degree in Computer Science / Cybersecurity / Information Security or equivalent

Tools

SAST

DAST

SIEM

Vulnerability scanners

CI/CD security tools

Job description

The IT Security Engineer will be responsible for implementing, operating, and supporting security controls for mission-critical systems within a secured environment.

This role covers both:

• Day 1 Security (Build / Project Implementation)
• Day 2 Security (Operations / Production Support)
• The Security Engineer will work closely with Security Leads, Infra, System, and Software teams to ensure compliance with government security policies and standards.

Key Responsibilities

Day 1 – Project / Implementation Security

1. Security Implementation & Engineering

• Implement security architecture and controls as designed by Security Leads/Architects
• Support system, application, and infrastructure security configurations
• Assist in threat modelling and risk assessment activities
• Translate security requirements into technical implementation across platforms

2. Compliance Support

• Support compliance with:
• IM8 / Government security policies
• Whole‑of‑Government (WOG) security requirements
• PDPA (where applicable)
• Assist in preparation and documentation for:
• Security Risk Assessments (SRA)
• Vulnerability Assessments (VA)
• Penetration Testing (PT)
• Maintain security documentation and evidence for audits

3. DevSecOps & Secure Development

• Implement and maintain security tools in CI/CD pipelines:
• SAST, DAST, SCA, container scanning
• Monitor and triage findings, and work with developers on remediation
• Support secure coding practices and DevSecOps adoption
• Assist in API security, secrets management, and secure communications setup

4. Security Testing Support

• Support coordination and execution of VA/PT activities
• Track vulnerabilities and ensure timely remediation
• Assist in documenting findings and closure evidence
• Support system security certification and go-live requirements
• Implement and maintain security hardening for:
• Operating systems
• Middleware and databases
• Kubernetes and containers (RBAC, secrets, network policies)
• Support configuration of:
• API Gateways
• WAF
• Authentication and authorization mechanisms (OAuth2, mTLS)

Day 2 – Operations / Production Security

• Support investigation, containment, and remediation of security incidents
• Perform log analysis and assist in root cause analysis (RCA)
• Work with SOC and internal teams during incidents
• Follow and improve incident response playbooks

2. Vulnerability & Patch Management

• Perform regular vulnerability scans and monitoring
• Track and verify patching and remediation activities
• Escalate high-risk vulnerabilities and propose mitigation controls

3. Security Monitoring

• Monitor alerts from SIEM and security tools
• Assist in tuning detection rules and dashboards
• Ensure logging and monitoring coverage across systems

4. Audit & Compliance Support

• Support audit preparation, evidence collection, and remediation tracking
• Maintain security records and documentation
• Assist in reporting security posture and issues

5. Access Control Administration

Support implementation of:

• RBAC
• MFA
• Privileged Access Management (PAM)
• Perform user access reviews and ensure least privilege

Required Qualifications & Experience

• Degree in Computer Science / Cybersecurity / Information Security or equivalent
• 3–7 years of IT experience in cybersecurity or infrastructure security
• Experience supporting security in projects or production environments
• Familiarity with Singapore Government security policies (IM8 preferred) *Only Singaporean profiles will be considered for this role*
• Hands-on experience with:
• IAM and access control
• Security tools (SAST, DAST, SIEM, vulnerability scanners)
• CI/CD and DevSecOps practices
• Basic knowledge of network security, application security, and cloud security
• Preferred Certifications
• CEH, CompTIA Security+, or equivalent
• Other certifications (e.g., CISSP Associate, GIAC, AWS/Azure Security) are advantageous

Strong technical troubleshooting and problem-solving skills

Ability to follow security standards and implement controls effectively

Good communication skills with technical and non-technical teams

Detail-oriented with strong documentation skills

Collaborative team player with willingness to learn