Junior Engineer – Automation & Digital

Unilever (Thailand) (Lat Krabang)

Bangkok, Thailand

Unilever Thai Group of Companies is a fast-moving consumer goods company with a strong presence in Thailand for more than 80 years. Unilever offers Thai consumers a wide range of leading brands in four categories; Home Care, Personal Care, Foods and Ice cream products. Our Thai portfolio includes major brand icons such as: Comfort, Lux, Vaseline, Citra, Sunsilk, Clear, Pond’s, Dove, Axe, Rexona, Close Up, Breeze, Omo, Sunlight, Knorr, Wall’s, Magnum, Cornetto, Lipton and luxury division Unilever Network. Unilever Thailand employs around 4,000 people and generated annual sales of Baht 40,000 million in 2014.

About this position

The Junior Digital and Automation Engineer will support the implementation and development of digital performance tracking systems to measure Overall Equipment Efficiency (OEE) and Statistical Process Control (SPC) across production lines.

Responsibilities

• Develop and manage online PLC tags, linking data to the OPC system (OPC Kepware or similar).
• Configure and modify PLC logic to ensure accurate sensor data collection (e.g., machine status, product counts, reject rates, and operational data.
• Ensure seamless integration of PLC and sensor data into OEE and SPC tracking systems using OPC UA .
• Extract and visualize fault codes from PLCs for real-time equipment performance monitoring.
• Support troubleshooting of PLC-to-OPC connectivity and automation/data acquisition systems to maintain optimal production efficiency.
• Work with Digital engineers and data analysts to ensure data accuracy and system stability.

Requirements

• Intermediate PLC programming skills (Siemens, Allen-Bradley, or similar), with experience in OPC UA-based industrial data integration using OPC Kepware.
• Understanding of networking concepts (e.g., OPC, Modbus) and IoT platforms for machine connectivity and real-time data acquisition.
• Strong troubleshooting skills and ability to resolve automation system issues.
• Effective communication and teamwork skills, with the ability to present technical findings to cross-functional teams.
• Familiarity with SCADA, MES, and industrial automation platforms (preferred but not required).
• Bachelor’s degree in Engineering (Automation, Mechatronics, Control, Instrumentation).
• 0–3 years of experience in automation, industrial control, or digital transformation projects.
• Hands-on experience with PLC systems, industrial control systems, and data acquisition.
• Familiarity with digital tools like Microsoft Power BI, Grafana (preferred but not required).
• Strong command of both written and spoken English.