Part Time Mechanical Design Engineer Jobs in Chicago, IL

Communities everywhere share the need for clean water. And as they work to meet that need, they're facing new, more complex challenges every day. Our water professionals collaborate to contribute innovative ideas, guided by scientific rigor and a vision for sustainable growth. Every day, we're helping communities improve, reuse, and protect our world's most precious resource.
Join our team to deliver transformational projects that will benefit future generations. Grow with us, H2O+U.
Your Opportunity
As a Mechanical Engineer, your role in our professional consulting services team is to work independently on multidisciplinary projects of various complexity as a discipline leader, through all phases of a project lifecycle. You are responsible for leading the design of HVAC, Plumbing, and Fire Protection systems on municipal water treatment plants, pumping stations, wastewater treatment plants, hydroelectric power plants, and private industrial water applications in different locations across North America. Every project has its own unique challenges, and you are considered a resource for solutions to those challenges.
Your Key Responsibilities

• Lead the design of HVAC, Plumbing, and Fire Protection systems for various projects from preliminary design through bid and construction phases.
• Develop basis of design reports (BODR) and technical memorandums for small-to- medium size projects, setting criteria for following design stages.
• Develop design documents including drawings, specifications, and opinion of probable construction costs (OPCC).
• Respond to RFIs, review submittals and shop drawings, and attend construction site visits for design compliance.
• Develop HVAC calculations including building cooling and heating load calculations, air distribution system sizing, and hydronic distribution system sizing.
• Develop Plumbing calculations including domestic water, sanitary waste, and storm water systems sizing.
• Apply design codes and standards based on the project needs.
• Coordinate design with other design disciplines throughout the life of a project.
• Assist with mentoring engineers in training (EIT) to develop and strengthen their skills and technical abilities.
• Travel to job sites in your state of residence and other states (5%)

Your Capabilities and Credentials

• In-depth understanding of HVAC engineering fundamentals such as psychrometric chart, refrigeration cycle and heat transfer.
• Experience in designing HVAC and Plumbing systems. Fire Protection design is a plus.
• Strong familiarity with design codes and standards of practice.
• Strong written and verbal communication skills.
• Strong understanding of all phases of project deliverables.
• Ability to lead one or more projects simultaneously.
• Experience with HVAC load calculation software - HAP or Trace.
• Strong knowledge of AutoCAD and Revit.

Preferred Qualifications

• Experience in designing HVAC, Plumbing, and Fire Protection systems for water treatment plants, wastewater treatment plants, pumping stations, chemical storage rooms, and hydroelectric power plants.
• Familiarity with NFPA 820 requirements for HVAC systems serving wastewater treatment plants.
• Strong client presentation skills.

Education and Experience

• Bachelor's degree in mechanical engineering.
• Licensed Professional Engineer (PE). NCEES record ready to obtain Professional Engineering licensure in multiple states.
• Minimum of 7 years of experience

Typical office environment working with computers and remaining sedentary for long periods of time. Field work may include exposure to the elements including inclement weather.
This description is not a comprehensive listing of activities, duties or responsibilities that may be required of the employee and other duties, responsibilities and activities may be assigned or may be changed at any time with or without notice.
Stantec is a place where the best and brightest come to build on each other's talents, do exciting work, and make an impact on the world around us. Join us and redefine your personal best.
Pay Range:
• Locations in MN, OH, VT, & Various CA, NY Areas-$107,100.00 - $160,700.00 Annually
• Locations in CO, HI, IL, MD & Various CA, NJ Areas-$117,800.00 - $176,800.00 Annually
• Locations in WA, DC & Various CA, MA areas-$126,400.00 - $189,600.00 Annually
Pay Transparency: In compliance with pay transparency laws, pay ranges are provided for positions in locations where required. Please note, the final agreed upon compensation is based on individual education, qualifications, experience, and work location. At Stantec certain roles are bonus eligible. Actual compensation for part-time roles will be pro-rated based on the agreed number of working hours per week.
Benefits Summary: Regular full-time and part-time employees (working at least 20 hours per week) have access to medical, dental, and vision plans, a wellness program, health saving accounts, flexible spending accounts, 401(k) plan, employee stock purchase program, life and accidental death & dismemberment (AD&D) insurance, short-term/long-term disability plans, emergency travel benefits, tuition reimbursement, professional membership fee coverage and paid family leave. Regular full-time and part-time employees will receive ten paid holidays in each calendar year. In addition, employees will be eligible to accrue vacation between 10 and 20 days per year and eligible for paid sick leave (and if more generous, in accordance with state and local law).
Temporary/casual employees have access to 401(k) plans, employee stock purchase program, and paid leave, in accordance with state and local law.
The benefits information listed above may not apply to union positions because benefits for such positions are governed by applicable collective bargaining agreements
Primary Location: United States | IL | Chicago
Other Locations: United States | OH | Cleveland
Organization: 2243 Water-US Delivery-Chicago IL
Employee Status: Regular
Business Justification: Replacement
Travel: Yes
Schedule: Full time
Job Posting: 16/06/2026 02:06:10
Req ID: 1006319
Stantec provides equal employment opportunities to all qualified employees and applicants for future and current employment and prohibit discrimination on the grounds of race, colour, religion, sex, national origin, age, marital status, genetic information, disability, sexual orientation, gender identity or gender expression. We prohibit discrimination in decisions concerning recruitment, hiring, referral, promotion, compensation, fringe benefits, job training, terminations or any other condition of employment. Stantec is in compliance with laws and regulations and ensures equitable opportunities in all aspects of employment. At Stantec we are committed to ensuring our recruitment process is accessible to all. If you require reasonable adjustments to be made during the recruitment process then please inform a member of our Talent Acquisition team.