Defense Contractor Mechanical Engineer Jobs in Baton Rouge, LA

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

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

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 field mechanical engineer, you will work on projects that enable the heart of our client’s data center site. You and other 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.

As a Mechanical Engineering Professional, you will be responsible for interacting with the client, contractors, and site personnel in Baton Rouge, LA. 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 will also oversee engineering and construction for the facility mechanical systems work including HVAC, chilled water systems, technical coolant systems, 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.

What to expect in this Role:

• Reviewing vendor submittal packages against client requirements and specifications
• Interacting with subcontractors and construction personnel
• Perform field inspections and audits to verify compliance with contract documents, construction drawings, industry standards, and safety regulations.
• Review and interpret project specifications, drawings, RFI’s, and submittals to ensure adherence to quality requirements.
• Track and document non-conformance reports (NCRs) and oversee corrective actions to resolve quality issues.
• Collaborate with contractors, subcontractors, and project teams to enforce quality standards and resolve issues.
• Oversee and inspect construction activities to verify workmanship, alignment, and adherence to project requirements.
• Collaborate with contractors, subcontractors, and project teams to enforce quality standards and resolve issues.
• Support pre-installation meetings, punch lists, and final inspections to ensure project milestones are met.
• Maintain up-to-date knowledge of safety regulations, and industry best practices

Here's what you'll need

• Bachelor's degree in Mechanical Engineering from ABET accredited university
• At least 3 years of practical application of mechanical facilities design engineering, including HVAC, hydronics, process piping, exhaust, plumbing, and related mechanical facilities systems
• Ability to collaborate and work effectively in a variety of teams, including multi-disciplinary teams
• Strong verbal and written communication skills
• Strong organizational skills, ability to prioritize, and leadership experience
• Solid knowledge and application of building codes and other related standards (ASHRAE, ASME, etc.)
• Solid knowledge in practice and procedures for specifications and selection of all types of mechanical equipment and components
• Proficient working knowledge of design software, such as AutoCAD, Revit and Autodesk Construction Cloud (ACC)
• Strong analytical and problem-solving skills
• Forward thinking, eager to learn best practices, and contribute with innovative ideas
• Passionate about buildings and construction

Ideally, you’ll also have:

• EIT or Professional Engineer (PE) licensure
• 5 years of experience working on site or as a facility engineer
• Working knowledge of design-related deliverables, such as P&IDs, PFDs, Details, and Equipment Plans, etc.
• Proficiency with industry‑standard HVAC load and energy modeling software such as Carrier HAP, Trane Trace 700, or Trane Trace 3D.
• Experience coordinating work packages with contractors/subcontractors

Other Requirements:

Location:

• This is an on-site position requiring work to be performed on the client site in Baton Rouge. If applicant is not located in the region, relocation assistance may be available.
• Candidate will be required to be on site Monday-Friday during normal business hours – nominally 8:00 am to 5:00 pm local time.

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.

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, 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 $69,500.00 to $121,500.00. 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 August 18, 2026. 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.