Senior Manager, IT Infrastructure and Security Operations

RAJAH & TANN SINGAPORE LLP; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

A leading law firm is seeking an experienced IT Infrastructure and Security Operations leader to oversee and manage robust IT solutions. The ideal candidate will work closely with executive leadership to ensure the security and efficiency of IT systems while providing exceptional service support. Requirements include extensive IT management skills and cybersecurity expertise, along with a bachelor’s degree and various relevant certifications.

Qualifications

• Minimum of 10 years of proven experience in a similar role.
• Strong hands-on experience with Azure cloud and on-premise systems.
• Relevant certifications (e.g., CISSP, CISM, CEH, ITIL) desirable.

Responsibilities

• Oversee design, implementation, and maintenance of IT infrastructure.
• Lead security operations including incident monitoring and response.
• Manage IT helpdesk functionality ensuring timely user issue resolution.

Skills

IT infrastructure management

cybersecurity operations

problem-solving

communication

leadership

Education

Bachelor’s degree in Computer Science, Information Technology, or related field

Tools

SIEM

EDR

Vulnerability scanners

Firewalls

Job description

About the Role

Reporting to the Chief Information Officer at Rajah & Tann Singapore, we are seeking an experienced IT Infrastructure and Security Operations to lead and manage our IT infrastructure, cloud environment (Azure), security operations, and IT helpdesk support.

The ideal candidate will have extensive expertise in IT management, cybersecurity, and infrastructure planning, ensuring the stability, security, and efficiency of our IT systems.

This role requires a proactive leader with hands-on technical knowledge who can strategically design, implement, and maintain robust IT infrastructure and security measures while supporting business objectives.

Key Responsibilities

• Oversee the design, implementation, and maintenance of the firm's IT infrastructure, including on-premise and Azure cloud-based servers, networks, and storage systems.
• Lead day-to-day infrastructure & security operations, including monitoring, detection, analysis, and response to security incidents and threats.
• Manage and operate security tools and platforms such as firewalls, endpoint protection, SIEM, and intrusion detection/prevention systems.
• Maintain and improve system hardening, patch management, and endpoint security practices.
• Manage the IT helpdesk function, ensuring timely resolution of user issues, continuous service improvement, and adherence to SLAs.
• Ensure proper documentation of support procedures, incident logs, and knowledge base articles to enhance team efficiency and knowledge sharing.
• Provide escalation support for complex technical issues, working closely with internal teams and external vendors.
• Collaborate with internal stakeholders to ensure secure system configurations and access controls.
• Manage relationships with external vendors and service providers to support infrastructure and security operations.

Requirements

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Minimum of 10 years of proven experience in a similar role within the legal or professional services industry preferred.
• Strong hands-on experience in IT infrastructure management and cybersecurity operations, including on-premise servers, networks, storage systems, and cloud computing (Microsoft Azure).
• Experience with security operations tools such as SIEM, EDR, vulnerability scanners, and firewalls.
• Experience managing IT helpdesk functions and delivering high-quality end-user support.
• Excellent leadership, communication, and problem-solving skills.
• Relevant certifications (e.g., CISSP, CISM, CEH, ITIL) are a plus.