Senior Mechanical Engineer

ARCO/Murray Engineering is seeking a Senior Mechanical Engineer to join our Mechanical Engineering Design team in Downers Grove, Illinois. This role leads the development of mechanical and plumbing systems for design/build projects spanning Entertainment, Controlled Environment Agriculture, Industrial, Commercial, and Manufacturing facilities.

About the role

Collaborate with internal construction partners—experienced Engineers and Project Managers—to deliver exceptional results throughout the design/build process.

Responsibilities

• Manage the design process for mechanical and plumbing systems across diverse building types, from concept to turnover and operation.
• Apply knowledge of building codes, standards, and project requirements to develop mechanical and plumbing system designs.
• Perform load calculations using ASHRAE-approved methods for various project and building types.
• Coordinate with design and construction teams to ensure final deliverables meet client criteria.
• Generate permit and construction documents using 3D modeling software like Revit and/or AutoCAD.
• Participate in project pursuits and conceptual design to demonstrate the value of the design/build approach.
• Assist the project team during construction by reviewing RFIs, submittals, and field challenges.
• Contribute to the development of standards, procedures, and training programs for the group.

Requirements

• 7–20 years of mechanical and/or plumbing design experience.
• Bachelor’s degree in Mechanical Engineering, Architectural Engineering, or a related field.
• Proficiency in Revit and AutoCAD.
• Knowledge of codes, standards, and design principles for mechanical and plumbing systems.
• Ability to manage multiple projects in a fast-paced environment.

Benefits

• Industry-leading performance-based bonus program.
• Employee Stock Ownership Plan (ESOP).
• Traditional and Roth 401k options.
• Tuition reimbursement for associates.
• Scholarship for associates’ children up to $28,000 per child.
• 1-month paid sabbatical after every five years of employment, plus $5,000 for travel.
• 1-week paid volunteer leave each year.
• 100% charitable match.
• Medical, dental, and vision insurance coverage.
• Paid parental leave.

Pay

Typical base compensation for the Senior Mechanical Engineer role is between $80,000 and $120,000. Candidates with extensive experience may exceed this range. The role is also eligible for discretionary bonus compensation based on individual and company performance.