Summary
Overview
Work History
Education
Skills
Certification
Projects
Timeline
Generic

Heshan Sellapperuma

Sunnyvale,CA

Summary

Technical Professional with 6+ years of experience in semiconductor manufacturing, electrical diagnostics, and high-vacuum systems. Proven background in cleanroom operations, electromechanical troubleshooting, wafer and component testing, and software configuration using GX Developer. Skilled in collaborating with global engineering teams and delivering structured documentation and support. Currently pursuing a B.S. in Electrical Engineering with the goal of transitioning transition into an engineering role within medical electronics, or semiconductor R&D sectors.

Overview

7
7
years of professional experience
1
1
Certification

Work History

Field Service Engineer

Canon USA
san jose, CA
02.2022 - Current

- Performed end-to-end field service operations on high-vacuum PVD tools, including routine inspections, system calibrations, and equipment modifications

- Installed and configured control software using GX Developer; maintained a detailed software revision history

- Collected system and PLC backup data to diagnose complex hardware/software failures and escalated findings to headquarters in Japan

- Coordinated and participated in initial equipment installations at customer sites, ensuring successful setup and testing

- Provided structured training to junior technicians and peers on tool diagnostics, software handling, and safety protocols

- Managed service part inventory levels, ordered replacements, and ensured availability for scheduled maintenance

- Delivered customer support through troubleshooting assistance, real-time updates, and clear documentation of service reports

- Communicated regularly with Canon USA support and Canon-Anelva Japan to ensure alignment on customer requirements and tool functionality

Electronics Manufacturing Technician

Linear Integrated Systems
Fremont, California
10.2018 - 02.2022

- Performed electrical wafer testing and sorting using EG1034, EG2001, EG2001x, and FET Test 9400 systems

- Executed noise evaluation and electrical validation of semiconductor parts (SOIC, SOT-23, SOT-143)

- Carried out PCB rework, soldering, and created test programs for custom testing setups

- Produced bonding diagrams to assist in assembly line operations

- Ensured organized inventory and routine maintenance of lab tools and equipment

Education

Bachelor of Science - Electrical Engineering

Arizona State University
Tempe, AZ
12-2026

Associate of Science - Mechatronics Technology

Sierra College
Rocklin, CA
12-2017

Skills

TECHNICAL SKILLS

Semiconductor & Equipment Maintenance:

- High-vacuum PVD tool operation, diagnostics, and repair

- Preventative and corrective maintenance of electromechanical systems

- PLC software backup, troubleshooting, and GX Developer integration

- Cable, connector, and PCBA fabrication for in-field repair and upgrades

Lab & Testing Experience:

- Electrical testing of dies, wafers, and discrete components (Diodes, MOSFETs, Transistors)

- Soldering, rework, and bonding diagram creation for custom testing assemblies

- Use of oscilloscopes, multimeters, and other diagnostic test equipment

Software & Tools:

- GX Developer, PLC programming tools, Python (basic)

- Microsoft Office, Google Suite, data collection and analysis platforms

- Lab inventory control and documentation systems

Professional Skills:

- Field report writing, revision tracking, and maintenance logs

- Interfacing with customers and cross-functional engineering teams

- On-site equipment installation, software configuration, and technician training

Certification

- Electro-Mechanical Skills Certificate

- Mechatronics Technology Certificate of Achievement

Projects

Propeller Clock (Persistence of Vision)

- Designed and built a rotating LED clock using a PICAXE (PIC16F28) microcontroller

- Developed circuitry to synchronize LED output with 1920 RPM motor rotation and 32Hz timing

- Demonstrated embedded control and practical application of signal timing

Timeline

Field Service Engineer

Canon USA
02.2022 - Current

Electronics Manufacturing Technician

Linear Integrated Systems
10.2018 - 02.2022

Bachelor of Science - Electrical Engineering

Arizona State University

Associate of Science - Mechatronics Technology

Sierra College
Heshan Sellapperuma