Hnin Aung

Experienced Senior Service Engineer with over 10 years of expertise in heavy equipment maintenance, diesel engine overhaul, hydraulic system repair, electrical troubleshooting, and field service support. Strong experience with Volvo, Hitachi, Furukawa, and Airman equipment in mining and construction environments. Skilled in preventive and corrective maintenance, advanced diagnostics, emergency breakdown response, equipment inspection, machine commissioning, and technical team leadership.

Seeking a Senior Service Engineer or Heavy Equipment Mechanic position to contribute strong technical expertise and maintenance experience.

Senior Service Engineer - Mya Oo Yin Company Ltd (Jade Mining) - Myanmar

(2018-08 - 2025-12)

• Led maintenance, troubleshooting, and repair operations for Volvo EC-series excavators and heavy construction equipment in large-scale mining environments.
• Performed complete diesel engine overhauls, including dismantling, inspection, repair, assembly, and performance testing of Volvo D7E and D12D engines.
• Diagnosed hydraulic, mechanical, and electrical faults using Volvo Tech Tools (VCAD), wiring diagrams, and advanced troubleshooting methods.
• Executed preventive and corrective maintenance programs to improve equipment reliability and reduce operational downtime.
• Provided field service support, emergency breakdown response, and on-site troubleshooting to maximize machine availability.
• Supervised major repair projects, hydraulic component replacements, and machine commissioning activities.
• Prepared technical service reports, maintenance documentation, and equipment inspection records.
• Provided customers with preventive maintenance recommendations and machine condition assessments.

Service Technician - UMG Myanmar Company Ltd - Myanmar

(2014-11 - 2018-06)

• Delivered after-sales service, maintenance, and technical support for Volvo and Hitachi excavators, Airman equipment, and PCR200.
• Diagnosed and repaired hydraulic, electrical, and mechanical faults using diagnostic tools and technical manuals.
• Conducted scheduled maintenance inspections and machine servicing to maintain equipment reliability.
• Supported diesel engine overhaul, hydraulic repair, and technical troubleshooting activities.
• Coordinated with customers and internal technical teams to resolve equipment issues efficiently.
• Performed machine commissioning, operational testing, and customer technical support.
• Maintained compliance with HSE policies, risk assessments, and Lockout/Tagout (LOTO) procedures in high-risk mining operations.

Bachelor - Mechanical Engineering - Government Technological College, Shwebo (2009 - 2014)