Summary
Overview
Work History
Education
Skills
Timeline
Generic

HeeJun Hwang

Field Service Engineer
Daejeon,47

Summary

Service Technician with hands-on experience in installation, maintenance, and troubleshooting of industrial and semiconductor equipment, including cleanroom environments. Skilled in preventive and corrective maintenance, safety compliance, and customer support, with a strong foundation in aircraft mechanical engineering. Currently collaborating with global teams and developing English communication skills, seeking to advance into a Field Service Engineer role to apply technical expertise and customer-focused service.

Overview

4
4
years of professional experience
2
2
Languages

Work History

Service Technician

Cavendish Hydrogen
08.2023 - Current
  • Installed, commissioned, and maintained hydrogen fueling station equipment including compressors, valves, and cooling systems, ensuring >95% equipment uptime.
  • Performed emergency troubleshooting and repairs of mechanical, electrical, and PLC/SCADA systems to minimize critical downtime.
  • Conducted preventive maintenance and safety inspections under strict high-pressure gas compliance standards (ISO, JHA, PTW).
  • Trained operators and local staff on safe operation, routine maintenance, and troubleshooting procedures.
  • Documented service activities in internal systems (ExpandIT, JIRA, Grafana) and provided technical feedback to global engineering teams for product improvement.
  • Collaborated closely with cross-functional teams across Korea, EU, and US to resolve complex technical issues and support continuous improvement.

Maintenance Technician

Amkor Technology Inc
04.2022 - 08.2023
  • Performed preventive and corrective maintenance on semiconductor packaging equipment in a cleanroom production environment.
  • Conducted troubleshooting and root cause analysis of mechanical and electrical issues, minimizing production downtime.
  • Supported production teams by ensuring compliance with cleanroom protocols and safety standards.
  • Collaborated with engineering staff to implement equipment upgrades and process improvements.
  • Replaced and repaired critical parts/components to ensure reliable equipment performance.

Education

Associate Degree - Aircraft Mechanical Engineering

Inha Technical College
Incheon, South Korea
04.2001 -

Skills

Technical Skills Tools & Software Language & Communication

Timeline

Service Technician

Cavendish Hydrogen
08.2023 - Current

Maintenance Technician

Amkor Technology Inc
04.2022 - 08.2023

Associate Degree - Aircraft Mechanical Engineering

Inha Technical College
04.2001 -

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HeeJun HwangField Service Engineer