Systems Operations Engineer (DSC/JH)

ST ENGINEERING INFO-SECURITY PTE. LTD; Singapore; Hybrid; SGD 70,000 - 90,000; Full time

Job summary

A leading cybersecurity firm in Singapore is seeking a Systems Operations Engineer to manage and secure enterprise infrastructure. The ideal candidate should have 3+ years of experience in IT operations and skills in incident management, system hardening, and infrastructure monitoring tools. You will be responsible for optimizing performance, conducting patch management, and ensuring compliance with security standards. This role may require after-hours support and will be performed on-site or remote as per company policy.

Qualifications

• 3+ years of experience in IT operations.
• Experience in designing, developing, testing, deploying, and maintaining security solutions.
• Familiarity with Windows and Linux systems.

Responsibilities

• Lead primary day-to-day SIEM interactions with project team and cybersecurity staff.
• Perform system hardening and ensure compliance with security standards.
• Manage and maintain enterprise firewalls and network security appliances.
• Automate frequently used processes with scripts and programs.

Skills

IT operations experience

Incident and Problem Management

System hardening techniques

Patch management tools

Infrastructure monitoring tools

Windows and Linux familiarity

Cloud infrastructure security

Communication skills

Problem-solving skills

Tools

Splunk

Nagios

SolarWinds

Python

Ansible

Job description

We are seeking a Systems Operations Engineer with a strong focus on infrastructure operations. This role involves managing and securing enterprise infrastructure including firewalls, networks, servers, and monitoring systems. The ideal candidate will have hands‑on experience in system hardening, patch management, and infrastructure security tools.

Key Responsibilities

• Lead primary day-to-day SIEM interactions with project team and cybersecurity staff

• Perform SIEM, log collector deployment, configuration, perform maintenance, upgrades and troubleshooting both on‑premises and on the cloud

• Optimize and streamline the operation and performance

• Manage and maintain enterprise firewalls and network security appliances.

• Implement and monitor across servers, networks, and cloud environments.

• Perform system hardening and ensure compliance with security standards.

• Conduct regular patch management and vulnerability remediation.

• Automate frequently used process and workflows with scripts and programs using scripting skills

• Create technical documentation including SOP's and design documents related to system configurations, processes, and procedures.

• Work with external service providers to implement new projects or upgrades

• Participate in incident response and investigations related to infrastructure breaches.

• Perform and participate in capacity planning, redundancy planning and execution of Disaster Recovery Plan.

• Provide ad hoc on‑site or remote technical support

• Deployment of services / devices at customer sites

• Interface with technical personnel and other teams as required

Qualifications

• 3+ years of experience in IT operations.

• Incident and Problem Management skills

• Experience in designing, developing, testing, deploying, and maintaining security solutions

• Familiarity with Windows and Linux systems

• Experience with system hardening techniques and patch management tools.

• Proficiency in infrastructure monitoring tools such as Splunk, Nagios, or SolarWinds.

• Familiarity with cloud infrastructure security (AWS, Azure, GCP).

• Excellent problem‑solving and communication skills.

Preferred Skills

• Experience with scripting or automation tools (e.g., Python, Ansible)

• Prior experience in managing enterprise‑level network infrastructure.

• Well verse in Windows AD Management

• Plus point: Knowledge of ITIL frameworks and best practices for IT service management.
• Plus point: ISMS 27001 audit knowledge.
• Plus point: Familiarity with cloud security and firewalls (e.g., AWS Security Groups, Azure NSGs).
• Plus point: Experience with SIEM tools and log collection tools.

Working Conditions

• The position may require standby and occasional after‑hours support depending on operational needs.

• Work will be performed on‑site/remote as per the company policy

Work Location

Ang Mo Kio