Operations & Maintenance Engineer - Clean Energy

RMA Group, headquartered in Bangkok, Thailand, is a multi-sector group with over 9,000 employees and an operational presence in 14 countries. For almost 40 years, we have developed enduring partnerships to support the needs of our clients, underpinned by the core values of innovation, integrity, and endurance. Through its various businesses including RMA Automotive, Global Fleet Sales, Comin Asia, and Express Food Group (EFG), RMA Group has established itself as the partner of choice for leading automotive, equipment, engineering services, and food brands in Southeast Asia and beyond.

Overview of the Role

The Operation & Maintenance (O&M) Engineer will be responsible for ensuring the reliable performance and efficiency of RMA Energys solar projects, including rooftop, ground-mounted, and carport systems. The role covers system monitoring, preventive and corrective maintenance, monthly billing operations, ISO compliance, and performance analysis to support the long-term success of the companys clean energy portfolio.

Key Responsibilities

Operations & Monitoring

• Monitor system performance using SCADA/monitoring platforms and promptly identify abnormalities.
• Record daily generation, compare with expected yield, and report variances to management.

Maintenance

• Perform preventive and corrective maintenance of PV modules, inverters, AC/DC panels, and transformers.
• Conduct testing and inspections, including IV curve tracing, insulation resistance, and thermography.
• Supervise contractors for module cleaning and repair activities.

Monthly Billing

• Collect and validate meter data (Revenue Meter/SCADA).
• Calculate energy charges in line with contract terms (Tariff, TOU, PPA).
• Prepare billing documents such as energy summaries, PR/availability reports, and site logs.
• Reconcile with utility bills (MEA/PEA) and resolve discrepancies.
• Coordinate with accounting teams and clients for billing confirmation and invoice submission.

Trend Analysis

• Analyze energy production and consumption data to forecast performance.
• Track industry developments in solar technology, equipment, and standards.
• Provide analytical reports and recommend system improvements.

ISO & Compliance

• Ensure tasks and documentation are compliant with ISO standards.
• Support both internal and external audits.
• Maintain records and reports to demonstrate compliance.

Reporting & Safety

• Prepare daily and weekly reports, supporting Root Cause Analysis (RCA) where required.
• Follow safety procedures and international standards such as ISO 9001 & ISO 45001.

Qualifications

• Bachelors degree in Electrical Engineering, Renewable Energy, or a related field.
• Minimum 2 years experience in solar O&M or electrical systems (fresh graduates with relevant internships are welcome).
• Hands-on experience with testing tools such as multimeters, insulation testers, and IR cameras.
• Basic knowledge of SCADA/monitoring systems and Excel/Google Sheets (Pivot, VLOOKUP/XLOOKUP) for billing.
• Familiarity with ISO standards preferred.
• Detail-oriented, safety-focused, and willing to travel to site locations.

Why Join Us

At RMA Energy, you&aposll play a key role in delivering reliable solar energy solutions and ensuring best-in-class plant performance. This role offers hands-on technical exposure, professional growth opportunities, and the chance to be part of a forward-looking clean energy business.

RMA Group is an equal opportunity employer, with a diverse group of colleagues globally representing different cultures, backgrounds, and beliefs. Our values of Innovation, Integrity, and Endurance are embedded in what we do, and we welcome applicants who are committed to respecting diversity of thought and living our values on a day-to-day basis.