MHARK CYRIEL BUNO
Mandaluyong City,Philippines
Summary
Results-oriented Facilities Engineer with over 9 years in semiconductor and manufacturing sectors, specialising in facilities operations and utilities management. Expertise in preventive and corrective maintenance of HVAC systems, chillers, compressors, and power plant equipment. Coordinates contractors, manages work orders, ensures regulatory compliance, and collaborates with teams to optimize equipment uptime and ensure stable plant operations.
Overview
10
10
years of professional experience
6
6
years of post-secondary education
Work History
Facilities Operations Engineer
ROHM Electronics Philippines, Inc.
Carmona, Cavite, Philippines
02.2023 - Current
- Plan, coordinate, and execute infrastructure and equipment maintenance schedules to ensure continuous, reliable facility operations.
- Perform preventive and corrective maintenance of facility and production support systems to minimise downtime and operational risk.
- Monitor, diagnose, and maintain air conditioning, cooling, and HVAC systems to ensure stable environmental conditions, optimal performance, and energy efficiency.
- Perform maintenance, monitoring, and troubleshooting of critical facilities equipment, including chillers, AHU, exhaust systems, scrubbers, compressor units, and gas mixer systems.
- Monitored and analysed Building Management System (BMS) parameters to identify abnormalities, respond to alarms, and implement timely corrective actions, preventing potential system downtime.
- Coordinates with production, engineering, and maintenance teams to ensure consistent equipment operation.
- Conducted inspections and supervised quality verification of subcontractors’ works to ensure adherence to safety standards, project scope, and schedule commitments.
- Prepared and maintained technical reports, compliance documentation, and preventive maintenance records to support operational integrity and regulatory compliance.
- Works on a four-day rotating schedule, consisting of 12-hour onsite shifts, followed by two days off.
Facilities Engineer
ROHM Electronics Philippines, Inc.
Carmona, Cavite, Philippines
08.2016 - 02.2023
- Managed project timelines, technical designs, specifications, manpower, and budgets to deliver projects on time while ensuring compliance with company and global standards.
- Coordinated work orders and monitored project progress with internal teams and contractors to align efforts and achieve project milestones.
- Identified potential risks and hazards on-site and implemented effective countermeasures to prevent delays and ensure safety compliance.
- Assisted in bidding process by conducting on-site inspections, preparing materials take-off, and estimating project costs to support accurate proposals.
Power Plant Engineer
ROHM Electronics Philippines, Inc.
Carmona, Cavite, Philippines
01.2016 - 08.2016
- Ensured continuous power supply for plant operations to meet energy demand.
- Performed troubleshooting and maintenance of power plant systems to minimise downtime.
- Monitored power plant equipment to maintain optimal operational performance.
Education
Bachelor of Science in Mechanical Engineering
University of Perpetual Help System Laguna
Calamba City 06.2009 - 05.2015
Skills
- Facilities operations and equipment control
- Preventive and corrective maintenance planning
- Utilities management (HVAC, chillers, compressors, boilers, power plant systems)
- BMS monitoring and facilities system diagnostics
- Troubleshooting and root cause analysis
- Contractor coordination, inspection, and work supervision
- Project coordination, work order management, and cost estimation
- Compliance with ESH standards, building codes, and company regulations
- Technical documentation, reporting, and compliance records
- Cross-functional collaboration (production, engineering, maintenance)
- Strong attention to detail with ability to work in shifting schedules
Timeline
Facilities Operations Engineer
ROHM Electronics Philippines, Inc.
02.2023 - Current
Facilities Engineer
ROHM Electronics Philippines, Inc.
08.2016 - 02.2023
Power Plant Engineer
ROHM Electronics Philippines, Inc.
01.2016 - 08.2016
Bachelor of Science in Mechanical Engineering
University of Perpetual Help System Laguna
06.2009 - 05.2015