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Senior Mechanical HVAC/Plumbing Engineer
Donohue & Associates, Inc.
Water‑focused engineering firm delivering municipal and industrial solutions for drinking water, wastewater, stormwater & transportation.
Designing HVAC and plumbing systems for municipalities and industrial clients in the Midwest as a Mechanical Engineer in a deadline-driven environment.
Ranked 16th largest in the U.S. wastewater engineering sector as of their 25th anniversary in February 2022.
11 Offices
Midwestern States
Operates 11 offices across six Midwestern states, reflecting significant regional expansion.
Founded in 1997 by a small team in Sheboygan, the company has grown into an employee‑owned engineering consultancy.
Their project roster spans municipal and industrial clients, delivering planning, design, construction‑phase services, startup assistance, SCADA/control systems, and grant support.
Specializing in infrastructure sectors — drinking water, wastewater, stormwater and civil/transportation — they tackle everything from treatment plants to pump stations and street systems.
Projects feature engineering excellence awards, such as ACEC awards and ENVISION Gold ratings, for innovative work like the Holland anaerobic digester and Evansville pump station.
Culture + Values
Make the world a better place by improving infrastructure and developing solutions that enhance environmental sustainability.
Client-focused, one-team culture.
Employee ownership with monthly profit-sharing based on company performance.
Flexible structure enabling rapid professional growth and autonomy for engineers.
Streamlined organizational structure simplifying communications and project delivery.
Technical excellence, quality, and service across drinking water, wastewater, stormwater, and civil engineering.
Environment + Sustainability
85% & 90%
Energy Recovery Efficiency
A wastewater facility achieves 85% of required electrical energy and 90% of heat energy through innovative projects, aiming for net-zero energy use.
+25% Capacity
Sustainable Expansion
Fishers WWTP expansion increased capacity by 25% without additional power consumption, showcasing sustainable growth.
Top 20
Sustainability Leadership
Ranked as a top-20 ENR wastewater treatment design firm for nine consecutive years, reflecting expertise in sustainable infrastructure.
Committed to improving and protecting urban and rural environments through responsible, streamlined business practices.
Deliver clean waterways, sustainable infrastructure, and better roadways.
ENVISION Gold sustainability rating for designed anaerobic digester.
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