Site-Lead Senior Engineer

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At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

Our People & Places Solutions business – reinforces our drive to improve the lives of people everywhere and epitomizes the "why" of what we do – the tremendous positive impact and value our solutions bring to our communities and society as a whole. From facilities delivering life‑saving therapies and ensuring clean water to enabling the connection of people through all modes of transportation and providing access to technology – we're integrating a multitude of these solution elements to build the smart environments of tomorrow.

Start your Jacobs career with a company that inspires and empowers you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow.

At Jacobs, we do not settle – always looking beyond to raise the bar and deliver with excellence. We apply our expertise and knowledge as we look into the future with great optimism and focus. We don’t settle until we give our best and know that we’re making a difference.

As a facilities Site‑Lead Senior Engineer
, you will work on projects that enable the heart of our client’s semiconductor manufacturing in Wilton, CT
. You will manage the site’s capital improvements team and serve as the owner’s representative and operations interface for capital projects. You will collaborate with on‑site design teams on planning, execution, and closeout, ensuring alignment with scope, schedule, budget, and project delivery standards.

Oversee design, procurement, and construction for equipment renewal and replacement projects.

Specifically, you will work on sustaining operations, executing capital projects, and transferring technical knowledge to the in‑house Engineering group.

• Sustain Operations – Provide daily engineering support to Maintenance and vendors.
• Execute Capital Projects – Deliver engineering expertise from concept through construction and turnover.
• Transfer Knowledge – Mentor ASML staff and integrate standards and tools into the CRE engineering roadmap.
• Oversee a multidisciplinary team of 5‑6 engineers and designers (Mechanical, Electrical, I&C, Reliability, Drafting/Design Technician, Project Engineer).
• Collaborate with on‑site personnel to support projects of varying size and complexity, including assessment of systems, consulting system owners and analyzing scope requests from stakeholders.
• Design, develop, evaluate, and prepare recommendations in basis of design (BOD), scope of work (SOW) and related documents.
• Oversee QA/QC on engineering and construction for the facility mechanical/process systems including HVAC, process cooling water, wastewater, general and acid/ammonia exhaust, fire protection, plumbing, process‑piping and equipment.

• Bachelor’s degree in Mechanical or Chemical Engineering from an ABET Accredited University.
• Licensed Professional Engineer (PE) in Connecticut or ability to obtain within 3 months (active NCEES record).
• Fifteen (15) or more years of practical application of process and mechanical and process facilities engineering.
• At least five (5) years of design project delivery processes experience.
• Four (4) or more years leading engineering design teams and personnel development.
• Two (2) or more years of experience working with complex semiconductor manufacturing tools in clean rooms.
• Two (2) or more years in a direct client‑facing role focused on scope and schedule development, deliverable definition, staff and resource planning, and package/project delivery.
• Solid knowledge and application of the mechanical/process requirements per ASME, ASME B31.3, building codes, fire codes, code compliance (SEMI, NFPA, IBC/IMC, CT)…