Grunau Company

Grunau

Project Accountant

1-2+ years billing/accounts receivable; strong billing knowledge; detail oriented; proficient in MS Office; good communication.

Service Sales Project Manager - Plumbing

Service Sales Project Manager

3-5 years project management or related experience; plumbing/mechanical industry experience; strong customer service; ability to price simple mechanical proposals; multitasking; team collaboration.

Safety Specialist

Bachelor's preferred; OSHA CFR 1926 knowledge; First Aid/CPR; OSHA 30; 1-5 years construction experience; drug screen/background check.

Senior Project Manager - Mechanical Design

Senior Project Manager

10+ years in mechanical contracting PM; piping and sheet metal; design-build; leadership; estimating; client development.

Project Manager - Industrial Process Piping

Project Manager

5+ years of progressive mechanical contracting experience focusing on industrial piping; BS in Mechanical Engineering or Construction Management or equivalent; strong MS Office skills.

10+ years in mechanical contracting PM roles; BS in Mechanical Engineering or Construction Management; mentoring/leadership experience; Proficient in MS Office; LEED a plus.

Mechanical Estimator

Experience as a Mechanical Estimator or in mechanical contracting; knowledge of HVAC, piping, fabrication; strong cost estimation, takeoffs, and bid preparation; proficiency in MS Office and CAD/BIM tools.

Title	Location	Date
Project Accountant Full Time · 1+ YOE Oak Creek, Wisconsin, United States · Onsite	Oak Creek, Wisconsin, United States Onsite	May 1, 2026
Service Sales Project Manager - Plumbing Full Time · 3+ YOE Oak Creek, Wisconsin, United States · Onsite	Oak Creek, Wisconsin, United States Onsite	Apr 27, 2026
Safety Specialist Full Time · 1+ YOE Oak Creek, Wisconsin, United States · Hybrid	Oak Creek, Wisconsin, United States Hybrid	Feb 3, 2026
Senior Project Manager - Mechanical Design Full Time · 10+ YOE Oak Creek, Wisconsin, United States · Onsite	Oak Creek, Wisconsin, United States Onsite	Jan 26, 2026
Project Manager - Industrial Process Piping Full Time · 5+ YOE Oak Creek, Wisconsin, United States · Onsite	Oak Creek, Wisconsin, United States Onsite	Dec 11, 2025
Senior Project Manager Full Time · 10+ YOE Oak Creek, Wisconsin, United States · Onsite	Oak Creek, Wisconsin, United States Onsite	Dec 11, 2025
Mechanical Estimator Full Time Oak Creek, Wisconsin, United States · Onsite	Oak Creek, Wisconsin, United States Onsite	Nov 25, 2024

Activities	Mechanical contractingHVAC installationPlumbing servicesProcess pipingCommercial refrigeration
Headquarters	US
Industries	ConstructionMechanical Engineering
Name	Grunau Company
Employees	500
Type	Private
Parent Company	APi Group
Tagline	Provides mechanical contracting and HVAC services for commercial and industrial projects.
Founded	1,920
Website	grunau.com
Latest Funding Round	Corporate Round
Latest Funding Year	2,006
Latest Investors	APi Group

Grunau Company

About Grunau Company