Plessey Semiconductors Ltd · 8 hours ago
Principal Sub Fab Engineer
Plymouth
Full-time
Onsite
Senior Level, Lead/Staff
10+ years expPlessey Semiconductors Ltd is seeking a Senior or Principal Sub Fab Engineer to join their Equipment Engineering Department. This key technical position involves overseeing Sub Fab systems and collaborating with Engineering and Manufacturing teams during a period of rapid expansion.
ElectronicsManufacturing
Responsibilities
Manage all activities within the sub-fab area to provide a continuous and safe supply of gases and chemicals to wafer fab equipment
Lead and support cross-functional engineering projects aimed at improving tool performance, reliability, and automation
Design and implement custom hardware and sensor integrations to enhance tool functionality and monitoring
Oversee and maintain gas cabinets (housing gas bottles for production tools), vacuum pumps, by-product abatement systems, and chemical (acid and solvent) bulk dispense systems
Own assigned tools and equipment, ensuring tasks are completed safely and efficiently. Perform routine chemical and gas system checks, maintain and troubleshoot equipment, replace supplies, and carry out scheduled maintenance
Maintain and update relevant databases (e.g., pumps, PPE inventory) and coordinate repairs or refurbishments as required
Lead deployment and adoption of FDC systems across new and existing fab tools, including installation, configuration, tool connectivity, and serving as the sub-fab FDC point of contact while supporting engineering teams
Offer out-of-hours support when required to maintain uptime and resolve critical issues
Apply advanced fault-finding and troubleshooting across electro-mechanical, electrical, and electronic subsystems
Collaborate with multidisciplinary teams on tool upgrades, retrofits, and performance optimisation initiatives
Contribute to projects involving data acquisition, networking, and system interfacing to improve fab-wide diagnostics and automation
Occasionally perform forklift operations and ensure all tasks are carried out safely and in compliance with PPE and safety protocols
Qualification
Required
Minimum HNC in Electrical or Electronic Engineering (preferred), or Mechanical Engineering with strong electronics experience
Solid foundation in mechanical engineering principles, with the ability to understand and work with complex electromechanical systems
10+ years' experience in a high-tech maintenance environment, demonstrating senior-level technical knowledge and leadership
Proven troubleshooting and analytical skills, particularly in electronics, system diagnostics, and fault detection
Experience with data-driven diagnostics, SPC charting, and implementing continuous improvement initiatives
High level of computer literacy, including Microsoft Office tools, for reporting, analysis, and project management
Ability to work independently, manage multiple priorities, and drive operational and process improvements
Strong team-working, mentoring, and coaching skills
Demonstrated critical thinking, problem anticipation, and the ability to take charge when issues arise
Experience contributing to audits, project management, and high-level meetings, providing informed technical input and guidance
Benefits
Pension scheme
Private medical & dental insurance
28 days’ holiday + bank holidays
Free onsite meals
Onsite gym
Relocation support
Visa support available
Company
Plessey Semiconductors Ltd
Plessey is a British high-tech company operating in the field compound semiconductors.
201-500 employees
Funding
Current Stage
Growth StageTotal Funding
$1.7MKey Investors
SBRI Healthcare
2025-08-20Acquired
2013-09-01Grant· $1.7M
Leadership Team
David Hayes
CEO
Mike Snaith
Chief Operating Officer
Recent News
2025-09-17
2025-08-22
Google Patent
2025-05-06
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