Available for hire — Immediate

Sean Koh

PLC Automation Engineer & Vision Systems Specialist

Vibe Coding Expert — building with Claude Code

Singapore  •  Open to on-site, hybrid, and remote roles

Versatile automation engineer with 20+ years of hands-on experience in PLC programming, industrial vision systems, and mechanical design. Specialized in PLC-controlled manufacturing with robots, motors, sensors, and pneumatics. Equally comfortable in the command line, writing LabVIEW pipelines, or architecting network storage infrastructure.

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What I Do

Skills & Expertise

Vibe Coding with Claude Code

I build full projects through natural-language prompting with Claude Code — from PLC control logic and vision pipelines to web apps and infrastructure automation. Vibe coding lets me move faster, prototype ideas in hours, and ship working software without getting stuck in boilerplate. It's become a core part of how I work.

Claude Code AI-assisted Development Rapid Prototyping Prompt Engineering Full-stack Vibe Coding Agentic Workflows

PLC & Automation

PLC Programming (ST) Keyence PLC Nachi Robots HMI / GUI Servo / Stepper Motors Pneumatics Commissioning

Vision & Sensing

LabVIEW Vision AI Computer Vision PLC-Vision Integration RFID Systems

Software & Dev

JavaScript / Node.js ESP32 / MicroPython Linux / Bash Docker SQL / SQLite GitHub

Infrastructure & Tools

TrueNAS Proxmox Intel vPro / AMT Clonezilla Networking Hardware SolidWorks 3D Jira / Agile
Career History

Experience

PLC Programmer Aug 2025 – Present
Epic Medical — Singapore
  • Led migration of machine control systems from Arduino to industrial PLC platforms
  • Developed and maintained Structured Text (ST) programs for robots, motors, sensors, and pneumatic systems
  • Performed PLC debugging, commissioning, and fault analysis
  • Managed defects, changes, and cross-team collaboration using Jira
Senior Vision Engineer Apr 2017 – Mar 2024
Molex — Singapore
  • Developed PLC-integrated vision inspection systems for high-volume production
  • Implemented PLC-to-vision communication and system handshaking
  • Trained engineers on deployment and support of automation and inspection systems
  • Project lead for RFID asset management system
  • Served as system analyst for production web applications
Senior Production Engineer Apr 2010 – Mar 2017
Shimano (Singapore) Pte Ltd
  • Designed and implemented PLC-based automation solutions for manufacturing lines
  • Led automation integration and equipment upgrades
  • Improved production efficiency through process automation and datalogging
Mechanical Design Engineer Apr 2005 – Jul 2009
Sawmaster Diamond Tools Inc — USA
  • Designed automation-related mechanical systems using SolidWorks
  • Supported machine build, testing, and production handover
Mechanical Engineer Sep 2002 – Mar 2005
Electronic Systems Packaging (ESP) — USA
  • Programmed CNC turret punch and milling machines
  • Prepared BOMs, routings, and production documentation
Web Designer Jan 2000 – Dec 2002
USDA — USA
  • Designed websites and maintained servers
Academic Background

Education

South Dakota State University

Bachelor of Science — Mechanical Engineering

Brookings, South Dakota, USA  •  11 years studying and working in the United States

1999 – 2002
Let's Connect

Get in Touch

Open to New Opportunities

Available immediately for PLC automation, vision systems, or industrial engineering roles in Singapore.

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