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WE ARE CURRENTLY SEEKING qualified, experienced individuals to become members of our growing Team. Zien's success is a consequence of our commitment to innovation, how we support our employees, the way we deliver and the long-term relationships we have established with our customers.

PROJECTS ARE NOT OWNED by individuals or departments, but by all of us, which is why it's common to see team members from one discipline collaborating with veterans from other departments.

ESTABLISHED IN 1919, Zien is a full service design, build, operate and maintain mechanical contractor with service offerings in the consulting, energy and facility services fields with clients ranging through out the Midwest.

THE COMPANY ADVOCATES collaborative and sustainable solutions that are designed to ensure occupant comfort, improve system efficiency, reduce facility operational costs and optimize client profitability for the life of their building.


DESCRIPTION: Mechanical Engineer with experience in the design of HVAC and Process Piping projects for bio-tech, data center, hospital, universities and various types of commercial facilities.


This person will be responsible for:

  • Attend start up meetings & fully understand design intent & scope

  • Preparation of basis of design documentation which outlines the client's requirements

  • Ability to manage multiple projects simultaneously

  • Effective communication & coordination with Clients, Project managers, Architects, Contractors & equipment vendors

  • Effective meeting minutes & action item taken

  • Review of multi discipline design drawings for coordination

  • Detailed HVAC & Process piping system design & component/equipment selections

  • Preparation of construction documents & project specifications

  • Perform load analysis as required to determine system sizes

  • Complete project tasks within established design budgets & schedules

  • Provide technical support to the project managers & construction team



  • 5+ years experience of HVAC / Process Piping systems design & layout

  • Experience with large commercial systems engineering, Experience in a Design / Build environment is preferred

  • Professional registration as a Mechanical Engineer in Wisconsin

  • BS Mechanical Engineering Degree

  • Familiarity with Wisconsin building codes and regulation

  • AutoCAD proficiency is preferred


Salary: The position has full business accountability, allowing for a competitive base salary and corresponding discretionary bonus opportunity


To submit your resume for this job please email to


DESCRIPTION: HVAC/Plumbing/Controls Account Management/Sales


This person will be responsible for:

  • Contact current and potential clients to gain opportunities to bid on maintenance agreements.

  • Sets strategies for primary accounts by interviewing clients to learn the organization, influencers and the decision making process

  • Maintain an account knowledge base for selling maintenance agreements



  • Consult with the Facility Manager to resolve issues

  • Communicate effectively with the Owners, Property Managers, Subcontractors, etc.

  • Communicate the necessary manpower needs to the Operations team

  • Communicate the necessary information to the field (Scope, labor, materials, client info, etc.)

  • Other duties as assigned and mutually agreed upon

Required education, knowledge & abilities

  • Must have demonstrated proficiency for all the responsibilities of a regional account manager

  • Intermediate knowledge of Microsoft Office suite - Word, Excel, Power point & Outlook

  • Familiarity with building & facility infrastructure, mechanical equipment including HVAC, plumbing & piping, electrical systems & controls required

  • Intermediate knowledge of mechanical, electrical & energy codes required

  • Three years (3) of experience in the mechanical service sales, facility sales or a related field required

  • Five (5) years of business to business field sales experience with a track record of achieving challenging sales goals required

  • Bachelor's degree in business, engineering or equivalent work experience required


Salary: The position has full business accountability, allowing for a competitive base salary and corresponding discretionary bonus opportunity


To submit your resume for this job please email to

This person will be responsible for:

  • The ideal candidate(s) will work closely with senior management in the commercial & Industrial HVAC & Plumbing depts. to enhance their skill set

  • Is a key contributor to various energy or data modeling projects

  • Provides prompt and accurate support to the departments with assignments & projects accordingly

  • Work with assigned engineer to help research and analyze data such as customer design proposal, specifications & manuals to determine feasibility of design or application


Basic Qualifications

  • Minimum GPA of 3.0 on a 4.0 scale; prefer students with a 3.5 or better

  • Undergraduate Engineering student (Completed sophomore level or higher)

  • Successful record in academics and a diverse range of extracurricular activities

  • Ability to work a minimum of 40 hours per week for the duration of internship

  • Demonstrate proficiency in the MS Office Suite (Outlook, Excel, Powerpoint & Word)

  • Legally authorized to work in the US without sponsorship


Preferred Qualifications

  • Prior Engineering internship experience ideal

  • Experience with real world problem solving

  • Hands-on experience with mechanical equipment

To submit your resume for this job please email to


We are not a team because we work together...

We are a team because we respect, trust and care about each other.



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