Site-Lead Senior Engineer

Market Advanced Manufacturing 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 semi-conductor 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.- Over see a multidiscipline team of 5-6 engineers and designers (Mechanical, Electrical, I&C, Reliability, Drafting/Design Technician, Project Engineer)You and your team members will work closely with client owners in a fast-paced, dynamic environment.

In this role you will 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. The successful candidate will be responsible for interacting with the client, contractors, and site personnel. Your job includes designing, developing, evaluating, and preparing recommendations with basis of design (BOD), scope of work (SOW) documents, in addition to design, construction and specifications documents through the positional (programming) process with a team. You’ll oversee QA/QC on engineering and construction for the facility mechanical/process systems work including HVAC, process cooling water, wastewater, general and acid/ammonia exhaust, fire protection, plumbing, process-piping and equipment.

The work will include retrofits of existing building systems as well as new systems. Bring your curiosity, talent for multi-tasking and collaboration, and extreme organizational skills and we’ll help you grow, pursue and fulfill what drives you – so we can make big impacts on the world, together. Here's what you'll need Bachelor's degree in Mechanical or Chemical Engineering from ABET Accredited UniversityLicensed 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, including HVAC, hydronics, process piping, exhaust, plumbing, waste systems, chemical and gas distribution, pure water, and related mechanical-process facilities systemsAt least five (5) years of design project delivery processes experienceFour (4) or more years leading engineering design teams and personnel developmentTwo (2) or more years of experience working with complex semiconductor manufacturing tools either their manufacture, installation, or use in cleanroomsTwo (2) or more years in direct client-facing role focused on scope and schedule development, deliverable definition, staff and resource planning, and package/project deliverySolid knowledge and application of the mechanical/process requirements per ASME and ASME B31.3, building codes, fire codes, code compliance (SEMI, NFPA, IBC/IMC, CT) amendments. and other related standards such as ASHRAE. Solid knowledge in practice and procedures for specifications and selection of all types of mechanical equipment and componentsExperience reviewing vendor submittal packages against client requirements and specificationsField experience interacting with subcontractors and construction personnelAbility to collaborate and work effectively in a variety of teams, including multi-disciplinary teamsWorking knowledge of design-related deliverables such as P&IDs, PFDs, Details, and Equipment Plans, etc.

Strong verbal and written communication skillsStrong organizational skills, ability to prioritize, and leadership experienceIdeally, you’ll also have: Five (5) years of experience as a facility engineerWorking knowledge of the following:- Maintenance & Reliability Support - Utilities & Infrastructure Design and Reliability Analysis - Capital Project Engineering - Controls & Automation- Documentation & BIM – Proficient working knowledge of design software such as AutoCAD, Revit, Navisworks or BIM360 (Building Information Modeling)Strong analytical and problem-solving skillsForward thinking, eager to learn best practices, and contribute with innovative ideas Ability to collaborate and work effectively in a variety of teams, including multi-disciplinary teams Passionate about buildings and construction Other Requirements:Location:This is an onsite position requiring work to be performed on the client site in Wilton, CT. Candidate must be willing to commute to the site Monday-Friday during normal business hours – nominally 8:00 am to 5:00 pm with some flexibility based on ability of site to support and employee preference. Physical Requirements:Position requires field visits and walks at an active client site in various stages of construction. Applicant must be able to walk long distances, sit and stand for extended periods, bend, stoop, twist, crawl, climb ladders, work on catwalks, work in small spaces, lift and carry up to 25lbs.

Authorized to Work:Applicant must complete background check, drug screen and be fully authorized to work for any client in the United States. Jacobs will not sponsor or continue a visa for this position.#afelectronics Posted Salary Range: Minimum 132,900.00 Posted Salary Range: Upper 232,600.00 Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being.

Your security. Your future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan.

Jacobs has an unlimited U. S. Personalized Paid Time Off (PPTO) policy for full-time salaried/exempt employees, seven paid holidays, one floating holiday, and caregiver leave. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $132,900.00 to $232,600.00. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on November 13, 2025.

This position will be open for at least 3 days. Onsite employees are expected to attend a Jacobs Workplace on a full-time basis, as required by the nature of their role. Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via .