Senior Mechanical Engineer

The Role: We are seeking a highly experienced and driven Senior Mechanical Engineer to lead complex HVAC and plumbing design projects across diverse markets. With over 15 years of industry experience, this individual will serve as a technical expert and project leader, guiding multidisciplinary teams through the design and delivery of high-performance building systems. This role requires strong client engagement skills, technical proficiency, mentorship ability, and a collaborative mindset.

What You’ll Be Doing:

Design Leadership

  • Lead the execution of complex HVAC system designs using advanced engineering techniques and technologies.
  • Conduct energy modeling, life cycle cost analysis, and feasibility studies for proposed systems.
  • Drive innovation in system selection, integration, and sustainability strategies.
  • Oversee the production of construction documents and specifications.

Team & Project Leadership

  • Provide mentorship and technical guidance to junior and mid-level engineers.
  • Coordinate cross-discipline design efforts and lead internal quality reviews.
  • Manage scope, schedule, and deliverables on key projects.
  • Support proposal development and pursuit strategy, including go/no-go planning.

Client & Business Engagement

  • Build and maintain strong relationships with clients and industry partners.
  • Attend client meetings and lead technical discussions.
  • Support business development efforts through project interviews, client presentations, and marketing activities.

Technical Focus Areas

  • HVAC load calculations and energy analysis
  • Equipment selection and system layout
  • Ductwork and hydronic piping system design
  • Controls and automation system design
  • Plumbing and domestic water systems
  • Code compliance, LEED integration, and sustainable design best practices

What You Bring to the Team:

  • Bachelor’s degree in Mechanical Engineering or related field
  • Licensed Professional Engineer (PE) required
  • 15+ years of experience in mechanical building systems design
  • Strong proficiency in AutoCAD, Revit, and Microsoft Office Suite
  • Excellent communication, leadership, and mentoring skills
  • Proven ability to manage complex projects and deliver high-quality outcomes
  • Familiarity with energy modeling software (e.g., Trane TRACE, EnergyPlus) is a plus

Physical Requirements:

  • Ability to sit or stand for extended periods in an office environment
  • Occasional site visits requiring walking, bending, lifting (up to 30 lbs.)
  • Frequent use of computers, phones, and standard office equipment
  • Clear communication with internal teams and clients required

Let’s Build the Future Together!
As a 100% employee-owned firm, Guernsey offers more than just a job—we offer a collaborative, empowering workplace where your voice matters and your contributions drive real value. We combine decades of experience with innovative thinking to solve today’s complex design and engineering challenges.

We Are an Equal Opportunity Employer
We welcome applicants regardless of veteran status, disability, race, or background. For more on your rights as an applicant, review the Department of Labor’s Know Your Rights notice.