Mechanical Engineer

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Portland, ME Until 8/23/2026 4+ years exp First posted June 24, 2026 Last posted June 24, 2026
Job description

Mechanical Engineer

At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future.

Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career—and they’ll receive great total rewards along the way.

About Us:

Founded in 1975, Salas O’Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow’s requirements are today’s opportunities, and we are here to design lasting solutions for pressing challenges.

We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

Job Summary:

The Mechanical Engineer serves to work in a fast-paced multi-discipline team environment. The position responsibilities primarily are focused on the design of mechanical systems for new facilities, additions, and renovation projects. This will require providing technical leadership for the creation of construction drawings and specifications, existing system studies and master planning efforts.  Qualified candidates will meet with clients, project teams, code officials, contractors, and others to develop collaborative working relationships.  The project markets include higher education, healthcare, laboratories, K-12 education, commercial, government and institutional.

Responsibilities:

  • Develop mechanical system designs based on scope of work and/or client requirements.
  • Provide engineering design, evaluation, and planning of mechanical systems for a variety of building types.
  • Perform load and energy calculations with software such as IES and similar programs.
  • Conduct existing building surveys and document existing mechanical systems.
  • Develop system design and selection of equipment based on engineering calculation and analysis.
  • Develop project specifications.
  • Prepare detailed design documents, reports, and studies.
  • Complete code compliance research.
  • Coordinate work with other disciplines.
  • Provide construction administration services, including site visits during construction, submittal review, and RFI responses.
  • Perform QA/QC of design work.
  • Oversee and provide guidance to junior engineers and designers.
  • Lead project teams and serve as a primary contact for clients.
  • Assist in the procurement of new work; including the development of client relations and participation in project interviews.

Qualifications and Experience:

  • You have a bachelor’s degree in mechanical engineering.
  • You possess a Professional Engineer (PE) license.
  • You have a minimum of 4 - 8 years of design experience in HVAC systems.
  • You have knowledge and understanding of codes, standards, and design guidelines.
  • Ability to work collaboratively in a team setting.
  • Excellent work ethic and attitude.
  • Excellent verbal and written communication skills.
  • Strong organizational skills, the ability to plan, balance and prioritize work.
  • Ability to provide clear direction to junior team members in a collaborative mentorship.
  • Proficiency in Revit and Microsoft Office.
  • Ability to travel.

Location: Portland, ME

Compensation & Benefits:

The expected base salary range for this role is $85,000 - $100,000 USD per year. Actual compensation will be determined based on a number of factors including skills, experience, qualifications, and location.

This role is also eligible for performance-based bonuses and a comprehensive U.S. based benefits package, including:

  • Medical, dental, and vision insurance
  • 401(k) with company match
  • Paid time off and company holidays
  • Wellness programs and employee assistance resources
  • Professional development support

For more information, visit our full benefits overview here.

Equal Opportunity Employment Statement

Salas O’Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, colour, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O’Brien will accommodate the disability-related needs of applicants as required by law.

About this role

Summary

Designs mechanical systems for facilities, collaborates with teams, develops specifications, leads projects.

Job title

Mechanical Engineer

Experience level

4-8 years

Minimum experience

4+ years exp

Industry

engineering

Location requirements

Portland, ME; remote not allowed

Salary

$85k–$100k

Management role

No

Skills & keywords

Required skills

bachelor’s degree in mechanical engineeringprofessional engineer licenseRevitMicrosoft OfficeHVAC design

Preferred skills

None specified

Specializations

HVACmechanical systemsbuilding design
Locations

Structured locations inferred from the posting.

Portland, ME, USA

On-site City