Job Description

Role Overview

We are looking for an experienced Operational Technology (OT) Cyber Support Engineer to support the day-to-day operations, maintenance, and security of Endpoint Detection & Response (EDR) platforms deployed across secure, mission-critical operational environments. This role involves hands-on system administration, cybersecurity operations, and close adherence to change management and security controls in restricted and air-gapped environments.

Key Responsibilities

EDR Platform Operations & Maintenance

Operate and maintain Linux-based EDR servers, ensuring system stability and availability Perform scheduled OS, database, and application patching, upgrades, backups, and health checks Monitor system services, databases, indexing, and log forwarding processes Troubleshoot and resolve server-side issues, working with vendors where required
Endpoint Sensor Management

Monitor the health and connectivity of endpoint security sensors across multiple sites Investigate and remediate offline or unstable sensors through diagnostics and recovery actions Support onboarding and validation of new endpoint assets
Network & Infrastructure Support

Assist in network troubleshooting including firewall rules, certificates, and connectivity issues Support troubleshooting in air-gapped or restricted network environments
Security, Compliance & Hardening

Maintain system hardening in accordance with security baselines and policies Track vulnerabilities and apply security patches within defined timelines Participate in periodic access reviews, configuration reviews, and security assessments
Incident Support & Reporting

Provide technical support during cybersecurity incidents and investigations Prepare maintenance reports, system documentation, SOPs, and change records

Requirements

Mandatory Skills

Experience with Endpoint Detection & Response (EDR) platforms Strong hands-on experience administering Red Hat Enterprise Linux (RHEL 8/9) Working knowledge of PostgreSQL database operations (backup, restore, validation) Understanding of network fundamentals (TCP/IP, TLS, firewalls, proxies) Experience supporting endpoint security agents on Windows systems

Good-to-Have Skills

Experience applying CIS Benchmarks or security hardening standards Knowledge of log management or SIEM platforms Exposure to Operational Technology (OT) or industrial network environments

Certifications (Preferred)

RHCSA / RHCE Vendor certifications related to EDR or endpoint security platforms

Working Arrangement

Onsite support at secure operational locations across Singapore Participation in scheduled maintenance windows, including occasional after-hours work Work performed in controlled, air-gapped environments with strict security procedures
Job Types: Full-time, Contract
Contract length: 12 months

Pay: $3,800.00 - $4,500.00 per month

Benefits:

Health insurance
License/Certification:

Sgrean/SPR (Preferred)
Work Location: In person