Senior Mechanical Engineer

Job type: Long term temporary (February 2026 to February 2027)

Location: THIS ROLE IS ONSITE SUPPORT IN WILTON, CT. (Relocation assistance available)

• Bachelor's degree in Mechanical or Chemical Engineering from 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, including HVAC, hydronics, process piping, exhaust, plumbing, waste systems, chemical and gas distribution, pure water, and related mechanical-process facilities systems
• Solid 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 components
• Experience reviewing vendor submittal packages against client requirements and specifications
• Field experience interacting with subcontractors and construction personnel
• Ability to collaborate and work effectively in a variety of teams, including multi-disciplinary teams
• Working knowledge of design-related deliverables such as P&IDs, PFDs, Details, and Equipment Plans, etc.
• Strong verbal and written communication skills
• Strong organizational skills, ability to prioritize, and leadership experience
• Ideally, you will also have:
• Five (5) years of experience as a facility engineer
• Working knowledge of the following:
  Maintenance & Reliability Support
• Utilities & Infrastructure Design and Reliability Analysis
• Documentation & BIM – Proficient working knowledge of design software such as AutoCAD, Revit, Navisworks or BIM
  360 (Building Information Modeling)

• 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.

• 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.
• 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.

• 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 Certified Reliability engineering (CRE) 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…