Infrastructure Engineer Jobs in Milwaukee, WI (NOW HIRING)

Make an Impact at MSA
Help design the mechanical systems that keep communities running. As a Project Engineer – Mechanical at MSA, you will support the planning and design of critical municipal infrastructure including wastewater treatment facilities and pump stations and related mechanical systems. You’ll collaborate with multidisciplinary teams while contributing to infrastructure solutions that protect public health and support sustainable communities.

At MSA, we believe great people build great communities. As a 100% employee-owned firm, our teammates share in the success of the company while working together to deliver impactful solutions for the communities we serve. We foster a collaborative environment where curiosity, innovation, and professional growth are encouraged.

This position plays an important role in delivering high-quality design solutions while supporting project execution, technical excellence, and client relationships.

The Project Engineer works closely with Project Managers, mechanical and civil engineers, technicians, and municipal clients to deliver projects from planning and design through construction support while ensuring technical accuracy, quality, and schedule performance.

• Support the planning and design of wastewater treatment facilities, lift stations, and municipal pumping systems

• Perform and review engineering calculations, hydraulic evaluations, and equipment sizing for mechanical systems

• Develop mechanical layouts, equipment specifications, and construction documents

• Assist with the preparation of design reports, technical memoranda, and regulatory documentation

• Coordinate mechanical system integration with civil, electrical, and structural design teams

• Lead assigned project tasks and technical components with minimal oversight

• Monitor scope, schedule, and budgets for assigned project tasks and communicate progress with project leadership

• Coordinate work performed by technicians and junior staff to ensure consistency and quality

• Prepare construction specifications, cost estimates, and engineering documentation

• Support construction phase services including responding to contractor questions and reviewing submittals

• Conduct site visits, field investigations, and construction observation

• Review construction progress and verify compliance with design plans and specifications

• Document field observations and assist in resolving technical issues during construction

• Support commissioning and startup activities for mechanical systems when applicable

• Work closely with Project Managers and internal teams to ensure project goals are achieved

• Participate in client meetings and technical discussions related to project deliverables

• Mentor junior staff and support their professional development

• Contribute to proposal development and project pursuits

• Identify opportunities to improve engineering processes, design standards, and project workflows

• Bachelor’s degree in Mechanical Engineering from an ABET-accredited program

• 4+ years of relevant post-graduate engineering experience

• Experience supporting municipal infrastructure or water/wastewater projects

• Experience with engineering design software, CADD/BIM tools, and hydraulic or process modeling systems preferred

• Strong knowledge of mechanical engineering principles and municipal infrastructure systems

• Experience preparing technical reports, construction documents, and specifications

• Ability to coordinate technical work across multidisciplinary project teams

• Strong problem-solving, organization, and project management skills

• Effective written and verbal communication skills

• Professional Engineer (PE) license required

• Multi-state licensure may be required based on project assignments

At MSA, our people are our greatest asset. We believe in building strong teams, fostering collaboration, and creating an environment where employees can grow professionally while making meaningful contributions to the communities we serve.

You’ll join a firm where your work matters — where your expertise, teamwork, and ideas help drive the success of projects and the organization as a whole.

The salary for this position ranges from $79,000 to $126,500, with higher compensation possible for candidates with significant experience and exceptional qualifications.

• Better Together – A collaborative work environment that promotes open doors, new ideas, and honest opinions.
• Multi-disciplinary Opportunities – As multi-talented people in a multi-disciplinary firm, we encourage employees to explore interests, seek new experiences, and apply their skills where they can make the greatest impact.
• We’ve Got Your Back – Support when you need it and independence when you don’t.
• Commitment to DEIB – We are committed to creating a workplace where everyone can bring their authentic selves to work and where diverse perspectives drive innovation.
• Passion & Purpose – We are passionate about what we do and proud of it.
• Communities of Practice – Our Communities of Practice bring together experts across disciplines to collaborate, share knowledge, and generate new ideas.

Eligible employees also receive a comprehensive benefits package, including:

• Employee Stock Ownership Plan (ESOP) – As a 100% employee-owned company, eligible employees receive company shares at no cost

• 401(k) Retirement Plan – Generous employer match that is immediately 100% vested

• Medical, Dental & Vision Insurance for employees and eligible dependents

• Paid Time Off – Minimum of 17 days in the first year

• Paid Holidays – 8 holidays annually

• Paid Parental Leave – 2 weeks for both parents, with additional paid leave for birth parents

• Employer-Paid Insurance – Life, short-term disability, and long-term disability coverage

• Short-Term Incentive Program (STIP) – Annual performance-based bonus opportunity

MSA is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.

MSA is committed to creating a diverse and inclusive workplace and encourages candidates from all backgrounds to apply.

If you require a reasonable accommodation during the application or interview process, please contact [HR email or recruiting contact] so we can assist you.