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Senior Engineer

AllSTEM Connections

Appleton, WI • $140,000 / yr • 10/10/2026

Job Description

Job Description
We are seeking a Senior Building Mechanical Engineer to provide expert consulting, design, and engineering services for a diverse set of industrial and manufacturing clients. In this role, you will serve as the lead engineer for HVAC, plumbing, sanitary sewer, and fire protection systems, guiding projects from the initial study and proposal phase completely through construction and final client turnover.
As a self-driven leader, you will oversee design staff, collaborate in a multi-discipline environment, and seal construction documents as the Engineer of Record.

Key Responsibilities

• Lead System Design: Develop comprehensive design documents, drawings, and submittals for HVAC, industrial plumbing, sanitary sewer, and fire protection systems.
• Fire Protection Expertise: Design fire protection systems, including fire water storage and pumping systems, while navigating complex hazard classifications and secondary mitigation methods.
• Project Lifecycle Management: Manage multiple projects simultaneously from preliminary planning and scoping through field check-out, installation, start-up, and commissioning.
• Client & Proposal Execution: Meet with clients to define project limits, write detailed project scopes, conduct engineering studies, and develop precise construction and engineering time estimates.
• Cross-Functional Coordination: Collaborate closely with multi-disciplinary project teams and clearly present building mechanical scopes in both in-person and online group meetings.
• Quality & Compliance: Perform field surveys, shop inspections, and vendor expediting to ensure strict adherence to performance, fabrication, and building code specifications.
• Engineering Review: Oversee drafting and detailed design work executed by design staff; seal mechanical construction documents when appropriate.

Qualifications & Requirements

• Industry Experience: In-depth knowledge and proven engineering experience with HVAC, plumbing, and fire protection design specifically within industrial and manufacturing environments.
• Core Credentials: Must possess at least two (2) of the following (having all three is a major plus):
1. 10+ years of responsible engineering experience in the noted fields.
2. Bachelor’s Degree in Engineering.
3. Professional Engineer (P.E.) registration.
• Code Mastery: Thorough understanding of applicable mechanical standards and building codes for HVAC, plumbing, and fire protection systems. Familiarity with facility insurance carrier requirements (FM Global) is a significant benefit.
• Software Proficiency: Working knowledge of computer software applications for engineering, including Navisworks, AutoCAD, and Revit.
• Communication Skills: Strong written and oral communication skills, with a track record of delivering effective presentations to clients and technical groups.

If you are interested - please submit your resume.

Equal Opportunity Employer / Disabled / Protected Veterans

The Know Your Rights poster is available here:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf

The pay transparency policy is available here:
https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf

For temporary assignments lasting 13 weeks or longer, the Company is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.

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\nCompany Description

Guiding Principles and Core Values: UP HIRE
Understanding Matters.
We actively listen to each other, our STEM professionals, and customers. We take the time to understand their needs to make the best connections in the industry.

People Matter.
People are at the center of our company. All decisions we make are in the best of interest of our employees, co-workers, communities, candidates and customers.

Honesty Matters.
We conduct our business with integrity and DO the right things. We ARE trustworthy partners WHO stand behind our work and people.

Innovation Matters.
We are disciplined in bringing forward new thought and solutions that guide the industry and grow our company. Continued growth secures sustainability that provides solid careers for our employees, stability for our STEM professionals, and reliability to our customers.

Relationships Matter.
We take personal responsibility for all relationships with our employees, co-workers, STEM professionals and customers. Courtesy, dignity and respect EQUAL high performance results.

Everything Matters.
We hold ourselves accountable to perform with the upmost of professionalism, attention to detail, and highest standard of service. We hit our targets and do what we say we will do.

Company Description

Guiding Principles and Core Values: UP HIRE\r\nUnderstanding Matters.\r\nWe actively listen to each other, our STEM professionals, and customers. We take the time to understand their needs to make the best connections in the industry.\r\n\r\nPeople Matter.\r\nPeople are at the center of our company. All decisions we make are in the best of interest of our employees, co-workers, communities, candidates and customers.\r\n\r\nHonesty Matters.\r\nWe conduct our business with integrity and DO the right things. We ARE trustworthy partners WHO stand behind our work and people.\r\n\r\nInnovation Matters.\r\nWe are disciplined in bringing forward new thought and solutions that guide the industry and grow our company. Continued growth secures sustainability that provides solid careers for our employees, stability for our STEM professionals, and reliability to our customers.\r\n\r\nRelationships Matter.\r\nWe take personal responsibility for all relationships with our employees, co-workers, STEM professionals and customers. Courtesy, dignity and respect EQUAL high performance results.\r\n\r\nEverything Matters.\r\nWe hold ourselves accountable to perform with the upmost of professionalism, attention to detail, and highest standard of service. We hit our targets and do what we say we will do.