Design OT systems and applications for Celestica in Newmarket, Ontario, using Java, PHP, HTML, and SQL to support manufacturing operations.
This Level 08 individual contributor role connects corporate IT compliance with factory-floor Operations Technology. You will develop production equipment integrations, maintain legacy applications, and address site OT security vulnerabilities. The work also includes infrastructure, disaster recovery, system design, testing, and technical documentation.
Key Responsibilities: Develop applications integrating production equipment with shop floor controls
Lead site OT security and address zero-day vulnerabilities
Build software solutions and maintain legacy applications




Maintain storage and disaster recovery systems using ZFS familiarity
Design, test, troubleshoot, and document technical systems
Requirements: Five to seven years of related experience
Bachelor degree or equivalent education and experience
Robust programming skills in Java, PHP, HTML, and SQL
Deep infrastructure knowledge and autonomous working style
Linux operating systems and IT hardware knowledge are assets
Apply systems design, programming, infrastructure, and OT security expertise to Celestica manufacturing operations in Newmarket.

📌 Ot systems applications design engineer (Queensville)
🏢 Celestica
📍 Queensville