About Us
ESS Manufacturing is a leading provider of complex electronic manufacturing services (EMS) including circuit board assembly, electromechanical assembly, system integration and configuration, and direct fulfillment solutions. ESS Manufacturing provides services to a diverse group of industries including defense and aerospace, medical devices, industrial, energy, communications, and networking.
ESS Manufacturing is a wholly owned subsidiary of the privately held ESS corporation which also includes ESS Molding, ESS Prototype, and Synectic Engineering
ESS has earned a 5A1 D&B rating, the highest available. The corporation has no outside short term or long term debt and all acquisitions and growth are self-funded. ESS Manufacturing is consistently ranked among the top 100 largest contract manufacturers in the world.
Headquartered in Cambridge, Ontario, ESS Manufacturing operates three manufacturing facilities in North America, including Cambridge, Barrie, and Brampton. Our facilities carry industry specific certifications and regulatory compliance approvals including:
- ISO 9001
- ISO 13485
- AS9100
- J-STD-001 Class II and III
- IPC-A-610 Class II and III
-
UL / CSA / TUV / CCC / FM Global

- ITAR registered (Cambridge)
- Defense Logistics Information Services (DLIS) Registered
- C-TPAT (Brampton)
Our worldwide manufacturing footprint includes over 337,000 square feet and employs more than 1,000 people in North America. The skills of our people, our refined and robust manufacturing processes, and our leading edge capital equipment and software enable ESS to deliver the flexibility, quality, and reliability that is essential in a high mix manufacturing environment.
