Mechanical Engineer (HVAC)

Trilon Group

$85,000 - $100,000 / year

Hartford, CTFull-timeHybridIntermediate

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Description

Creativity. Innovation. A desire to effect positive change. That’s what it takes to work at Fuss & O’Neill – because that’s what we do for the communities in which we work: we create, innovate, and design long-lasting improvements that improve quality of life. Quality of life is also important on the job, so we’ve prioritized work-life balance by offering flexible/remote work opportunities, part-time benefits, and generous PTO. We believe that each day is an opportunity to support one another, to support our clients, and to support our communities. If you feel the same, then you’ve found your future.

Fuss & O’Neill, a leading New England-based consulting firm, is seeking a Mechanical Engineer to join our growing MEP team. This is an exciting opportunity for a mechanical engineer with HVAC consulting experience to take on increasing responsibility across a diverse range of building projects while working alongside experienced engineers and multidisciplinary project teams.

The Mechanical Engineer will focus primarily on HVAC engineering and design, with opportunities to contribute to plumbing and energy-efficiency projects. This position combines technical design and analysis with field investigations and construction support, providing the opportunity to work across multiple phases of project delivery.

Key Responsibilities

Develop HVAC designs and engineering solutions for commercial, institutional, and other building projects, including load calculations, equipment sizing, and technical analysis.
Create and update mechanical drawings and models using AutoCAD and Revit, coordinating designs with architectural, structural, electrical, and other disciplines.
Conduct weekly field investigations and site visits, and support construction administration through site observations, submittal reviews, RFIs, and related project activities.
Manage assigned design tasks independently while collaborating with senior engineers on technical decisions, quality control, and final design review.
Prepare calculations, specifications, technical reports, and project documentation while applying applicable codes and standards, including IBC, IMC, ASHRAE, NFPA, and IECC.
Communicate effectively with project teams, clients, contractors, and other stakeholders, while supporting plumbing and energy-efficiency projects as opportunities arise.

Skills, Knowledge and Expertise

Bachelor’s degree in mechanical engineering or a closely related field.
2+ years of mechanical engineering experience, preferably within an HVAC consulting environment.
EIT certification or progress toward obtaining an EIT preferred.
Proficiency with AutoCAD; experience with Revit or other BIM software preferred
Experience with HVAC load calculation software, such as Trane TRACE, preferred.
Experience with plumbing design, energy efficiency, or energy modeling is a plus.
Willingness to work approximately 3–4 days per week in the office and travel periodically for fieldwork.

This is a hybrid role, offering the best of both worlds—collaborate in-office with a high-performing team and enjoy the flexibility of working remotely part of the week. We're committed to supporting work-life balance while maintaining strong team connection and project delivery.

Benefits

Schedule Flexibility: Customize your work schedule to fit your life.
Health & Wellness: Comprehensive health benefits to keep you and your family healthy.
Continuous Learning: Access to online courses, conferences, and learning materials to fuel your professional growth.
Paid Time Off: Take the time you need to recharge with our generous paid time off policy.
Career Advancement: Clear paths for promotions and the opportunity to take on new challenges.
Fun Team Culture: Regular team-building activities, happy hours, and company outings.

The base salary range for this role is indicated in the posting. This range reflects the company’s good faith estimate of the compensation for this position at the time of posting. Final compensation will be determined based on factors such as experience, skills, qualifications, internal equity, and geographic location.

Visa sponsorship is NOT available for this position

All offers are contingent upon a successful criminal background check. Fuss & O'Neill, Inc. is proud to be an Affirmative Action/Equal Opportunity Employer. Fuss & O’Neill participates in the Federal e-Verify program.

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Benefits

Schedule Flexibility: Customize your work schedule to fit your life. Health & Wellness: Comprehensive health benefits to keep you and your family healthy. Continuous Learning: Access to online courses, conferences, and learning materials to fuel your professional growth. Paid Time Off: Take the time you need to recharge with our generous paid time off policy. Career Advancement: Clear paths for promotions and the opportunity to take on new challenges. Fun Team Culture: Regular team-building activities, happy hours, and company outings. The base salary range for this role is indicated in the posting. This range reflects the company’s good faith estimate of the compensation for this position at the time of posting. Final compensation will be determined based on factors such as experience, skills, qualifications, internal equity, and geographic location. Visa sponsorship is NOT available for this position All offers are contingent upon a successful criminal background check. Fuss & O'Neill, Inc. is proud to be an Affirmative Action/Equal Opportunity Employer. Fuss & O’Neill participates in the Federal e-Verify program. #LI-AS1

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About this role

Trilon Group (operating as Fuss & O'Neill) is looking for a mechanical engineer to join its MEP consulting team in Hartford on a hybrid basis. The role centers on HVAC design and engineering for commercial and institutional buildings—load calculations, equipment sizing, AutoCAD and Revit drafting, and coordination with other disciplines. You'll move between the office and field, conducting site investigations, supporting construction administration, and managing design tasks with increasing independence while working alongside senior engineers. The position also offers chances to contribute to plumbing and energy-efficiency work.

You'll need a mechanical engineering degree and at least two years of HVAC consulting experience, with proficiency in AutoCAD and familiarity with HVAC load calculation software like Trane TRACE. EIT certification or progress toward it is preferred, as is experience with Revit or BIM platforms. The company emphasizes work-life balance through flexible scheduling, generous PTO, and remote work options—you'll spend roughly three to four days weekly in the office. The salary range is $85,000 to $100,000, with benefits including comprehensive health coverage, professional development support, and a collaborative team culture.

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Pay for this role

$85,000 to $100,000 per year

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