Role Overview
You will create, deploy, maintain, and troubleshoot WAF policies across F5 ASM and cloud platforms (Azure / AWS), acting as the organisation’s primary defence against web-based threats. Working closely with development and security teams, you will design protective controls tailored to specific applications, reduce false positives, and continuously mature the organisation’s protection posture.
Key Responsibilities
WAF & Application Security
- Configure and manage F5 ASM and cloud WAF policies (Azure / AWS) for new and existing web applications
- Review vulnerability findings and develop WAF virtual patching solutions to rapidly mitigate risk
- Monitor and analyse activity logs to detect malicious traffic and indicators of compromise
- Work with developers to implement protective controls customised for specific applications
- Interpret web protocol data to determine source, intent, and risk level of threat agents
- Review WAF usage and define improvements to mature protection policies
Vulnerability & Firewall Management
- Manage the end-to-end vulnerability lifecycle — assessment, reporting, and stakeholder remediation engagement
- Execute firewall change requests and resolve connectivity issues arising from firewall policies
- Provide preventative maintenance and rapid troubleshooting to ensure infrastructure and application stability
- Apply understanding of routing, NAT, ARP, and tools such as tcpdump to trace and resolve data-flow issues
- Review vulnerability scan output and assess where WAF configuration can be used to mitigate attacks
Operations & Reporting
- Utilise SIEM platforms to create custom security reports and operational dashboards
- Prepare regular reports including monthly firewall / WAF log reviews and rules reviews
- Participate in technical design activities to identify infrastructure impact and ensure sound architecture
- Create and maintain technical documentation — network diagrams, policies, and operational procedures
- Support daily security operations and assist in audit event collection and reporting
Required Experience & Skills
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Network & Infrastructure Security
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Application & Cloud Security
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IPS, WAF, Load Balancers, Network Firewalls (e.g. Palo Alto)
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Application security concepts and web application technologies
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Network security fundamentals and data flow technologies
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Security vulnerability scanning and assessment methodologies
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Mainstream OS familiarity across a wide range of security tools
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Cloud security experience (Azure / AWS WAF configurations)
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Understanding of routing, NAT, ARP, and packet analysis
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Full understanding of the application project lifecycle
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SIEM & Audit
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Soft Skills
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Proficiency in SIEM platforms with custom report / dashboard development
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Proven analytical and problem-solving abilities
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Experience with audit event collection and reporting toolsets
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Self-motivated, detail-oriented, and collaborative team player
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Vulnerability management processes and stakeholder engagement
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High integrity, strong communication skills, positive demeanour
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Ability to research emerging IT security issues and products
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Certifications
A recognised security qualification is preferred. Suitable certifications include:
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F5 CTS-ASM
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CISSP
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CISM
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ISC2
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CEH
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PCNSE
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ABOUT THE COMPANY
Zenith Infotech (S) Pte Ltd. was started in 1997, primarily with the vision of offering state-of-the-art IT Professionals and solutions to various organizations and thereby helping them increase their productivity and competitiveness. From deployment of one person to formation of whole IT teams, Zenith Infotech has helped clients with their staff augmentation needs. Zenith offers opportunity to be engaged in long term projects with large IT savvy companies, Consulting organizations, System Integrators, Government, and MNCs.
EA Licence No: 20S0237
Job Summary
We are seeking a skilled Systems Management / Systems Administrator to manage, support, and optimize both IT infrastructure and enterprise applications. The role focuses on ensuring system stability, performance, security, and smooth application operations.
Key Responsibilities
Infrastructure Management
- Administer and maintain Windows and Linux servers (on-premise and cloud).
- Manage virtualization platforms (VMware, Hyper-V) and cloud environments (AWS/Azure/GCP).
- Monitor system health, performance, and capacity using enterprise monitoring tools.
- Perform system patching, upgrades, backup, and disaster recovery activities.
- Manage storage, backup, and recovery solutions.
Application Support & Management
- Provide L2/L3 support for enterprise and business applications.
- Install, configure, upgrade, and troubleshoot application platforms and middleware.
- Manage application servers such as WebLogic, WebSphere, Tomcat, IIS, Apache, Nginx.
- Coordinate with development teams and vendors for application issues, upgrades, and enhancements.
- Support deployment activities and environment management (Dev, Test, UAT, Production).
- Maintain system and application documentation, SOPs, and runbooks.
Operations & Governance
- Handle incident, problem, and change management within ITIL processes during office hours.
- Perform root cause analysis and implement preventive controls.
- Automate routine administrative tasks using scripting (PowerShell, Bash, Python).
- Support security audits, compliance, and regulatory requirements.
- Collaborate with network, security, cloud, and business application teams.
Requirements
- Degree in Computer Science, Information Technology, or related discipline.
- 3–7 years of experience in Systems Administration covering both infrastructure and applications.
- Good relevant experience in:
- Windows & Linux administration
- Virtualization (VMware/Hyper-V)
- Cloud platforms (AWS, Azure, or GCP)
- Middleware and application servers
- Backup, monitoring, and patch management tools
- Knowledge of ITIL processes and service management tools.
- Scripting and automation skills (PowerShell, Shell, Python).
- Good understanding of security best practices and networking fundamental
Salary and Benefits
S$6000- 7500
• AWS: 1 month
• Loyalty Bonus: 1 month, for every 12 months completed
• Variable performance Bonus: Up to 3 months (non-guaranteed, based on performance)
• Annual Leave: 18 days
• Medical Leave: 14 days
• Other leaves : As per MOM guidelines
• Other benefits : Group Medical Insurance (under Zenith).
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Job Summary:
We are seeking a Project Engineer – Applications with strong experience in managing and supporting government applications. The ideal candidate will have a technical background, experience in application deployment and maintenance, and a solid understanding of government processes and compliance requirements. This role requires coordination with internal teams, vendors, and government stakeholders to ensure timely and successful project delivery and application support.
Employment type: Perm with Zenith Infotech
Location: CENTRAL WEST (Singapore)
Working Hours: 8:30AM to 6:00PM (mon-fri)
Salary: $6500 – 7800 + Bonuses
Working Arrangement: ONSITE
Key Responsibilities:
- Serve as the primary technical liaison for government clients during the implementation and support of software applications.
- Manage application deployment, configuration, and post-deployment support in line with government standards and regulations.
- Troubleshoot and resolve application issues; ensure minimal downtime and prompt escalation if required.
- Prepare and maintain documentation related to system configuration, technical procedures, and support logs.
- Coordinate with development, QA, and DevOps teams to ensure application updates meet client and regulatory requirements.
- Assist with user acceptance testing (UAT) and training for government stakeholders.
- Maintain compliance with government IT security policies and data handling procedures.
- Support integration of applications with existing government systems and data platforms.
- Monitor project timelines, deliverables, and risk management, ensuring alignment with contractual obligations.
- Participate in regular status meetings and provide updates to project stakeholders.
Required Qualifications:
- Bachelor’s degree in Computer Science, Engineering, Information Technology, or a related field.
- 3–6 years of experience in application support or engineering roles, preferably involving government or public sector projects.
- Solid understanding of SDLC, ITIL processes, and application support practices.
- Familiarity with tools like JIRA, ServiceNow, or similar ticketing systems.
- Experience in working with technologies such as SQL, web applications, APIs, and basic scripting.
- Strong understanding of government compliance standards (e.g., data privacy, audit, security policies).
- Excellent communication, documentation, and stakeholder engagement skills.
- Ability to work under pressure and manage multiple projects simultaneously.
Preferred Skills:
- Experience with e-Governance platforms or state/central government application ecosystems.
- Knowledge of cloud platforms (AWS, Azure) and their use in government deployments.
- Certification in Project Management (PMP, PRINCE2) or ITIL is a plus.
- Experience in Agile or Hybrid project delivery models.
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