Engineer IV

Join UCT and be part of the fastest-growing sector in the world
! We indirectly touch every semiconductor chip that goes into every smartphone, smart car, and device that uses artificial intelligence.

This is a critical time for the semiconductor industry and for UCT - as technology evolves, we evolve with it. UCT is a diverse workplace where every talented employee is committed to continuous innovation, challenging the status quo and exceeding customer expectations. If you are a person with a relentless drive to succeed, a strong focus on quality with a passion for success –

UCT is looking for a talented Engineer IV to join us in Hayward, CA
. The Engineer IV is a senior‑level individual contributor who provides advanced technical expertise to support, improve, and expand semiconductor manufacturing, equipment, or business processes. This role independently leads to complex engineering assignments, solves high‑impact problems, and drives improvements in performance, reliability, cost, and scalability. The Engineer IV partners cross‑functionally, mentors less‑experienced engineers, and contributes to strategic initiatives while exercising strong technical judgment with minimal supervision.

• Lead complex engineering projects and problem‑solving efforts impacting manufacturing performance, product capability, or system reliability.
• Analyze data, designs, or processes to identify root causes, risks, and improvement opportunities.
• Develop and implement engineering solutions that improve yield, throughput, reliability, safety, sustainability, or cost.
• Serve as a technical subject‑matter expert within assigned domain (process, equipment, manufacturing, test, facilities, systems, etc.).
• Partner with Manufacturing, Operations, Quality, Supply Chain, IT, and Product teams to drive cross‑functional solutions.
• Lead or significantly contribute to NPI, technology transfers, ramps, or major change initiatives.
• Design, review, and approve technical documentation, specifications, procedures, and standards.
• Apply structured problem‑solving methods (RCA, DOE, FMEA, SPC, DMAIC, etc.).
• Assess engineering trade‑offs, risks, and impacts; make recommendations supported by data.
• Support audits, investigations, customer escalations, or compliance activities as needed.
• Mentor Engineers I–III through technical guidance, design reviews, and knowledge sharing.
• Identify and drive continuous improvement opportunities within engineering workflows or systems.
• Stay current on industry trends, technology advancements, and best engineering practices.

• Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

• Significant experience in engineering roles supporting manufacturing, technology, or complex systems
• Hands‑on experience in the design, build, and integration of manufacturing and test equipment, including test fixtures, with strong expertise in electrical troubleshooting, root cause analysis, and equipment qualification.
• Deep technical knowledge within area of specialization
• Strong analytical, problem‑solving, and data‑driven decision‑making skills
• Ability to work independently on ambiguous, high‑impact problems
• Strong written and verbal communication skills for technical and non‑technical audiences
• Proven ability to influence outcomes without direct authority

• Semiconductor manufacturing, equipment, or advanced manufacturing experience
• Experience supporting NPIs, factory ramps, or complex system implementations
• Familiarity with statistical tools, modeling, automation, or digital systems relevant to domain
• Demonstrated success improving operational, quality, or cost performance
• Experience mentoring or acting as technical lead on projects

• Bachelor’s degree in Engineering (Mechanical, Electrical, Chemical, Industrial,

• Master’s degree…