Senior Mechanical Engineer - Building Systems
Fuss & O'Neill
Job Description
Job Description
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.
We are seeking a Senior Mechanical Engineer to join our growing building systems team and play a key role in the planning, design, and delivery of complex mechanical systems for a diverse portfolio of projects. This position offers the opportunity to lead high-impact work across commercial, industrial, education, and municipal facilities while collaborating with a multidisciplinary team of engineers, architects, and designers.The ideal candidate is a seasoned mechanical engineer with strong technical expertise in HVAC, plumbing, and fire protection systems, a passion for mentoring junior staff, and the ability to manage projects from concept through construction. This role combines hands-on engineering, project leadership, and client engagement, making it well suited for a professional looking to take the next step in their career within a collaborative and forward-thinking environment.
This position may sit fully remote with travel as needed to job sites within the Northeast. Key Responsibilities- Lead mechanical design and serve as project manager for building systems projects, including HVAC, plumbing, and fire protection systems.
- Develop and review construction documents, technical specifications, and cost estimates.
- Ensure designs comply with applicable codes, standards, and client requirements (e.g., ASHRAE, local building codes).
- Manage project scope, schedule, and budgets for assigned projects.
- Serve as the primary point of contact for select projects, building and maintaining strong client relationships.
- Coordinate and manage multi-disciplinary design teams, including internal civil, structural, and electrical staff.
- Oversee construction administration activities, including submittal review, responses to RFIs, and site visits.
- Lead and participate in internal and external project meetings, maintaining clear communication with clients, consultants, and contractors.
- Support proposal development, level-of-effort estimating, and project planning.
- Mentor junior engineers and contribute to technical development within the mechanical team.
- Bachelor’s degree in mechanical engineering or a related field.
- 10+ years of experience in mechanical engineering design for building systems (HVAC, plumbing, and fire protection).
- Professional Engineer (PE) license required.
- Proficiency in AutoCAD and Revit for MEP design.
- Strong knowledge of HVAC systems, plumbing systems, fire protection, and applicable building codes and ASHRAE standards.
- Experience managing projects through design and construction phases.
- Excellent written and verbal communication skills and the ability to collaborate effectively with clients and project teams.
- Proficiency in Microsoft Word, Excel, and Outlook.
- Familiarity with BIM coordination tools preferred.
- Ability to travel to job sites in CT, MA, and RI.
This position may be open to a flexible, part-time arrangement of 20+ hours per week. Candidates seeking a reduced schedule are encouraged to apply.
Why You’ll Love Working with Us- 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- ...recent fiscal year. We have an exciting career opportunity for a Senior System Engineer to join our Technology Advisory team. This position is a... ...as a Primary or Secondary Engineer for assigned clients to build strategic plans, from analysis to plan development, recommendations...SeniorBuildingWork at officeLocal areaRemote workFlexible hours
$123.6k - $170k
...Senior Hvac Engineer At Jacobs, we're challenging today to reinvent tomorrow by solving the... ...experience in dust collection systems to help deliver solutions to our clients... ...Manufacturing clients. You will lead our Building Mechanical team members on projects, perform...SeniorBuildingRemote work$123.6k - $170k
...Job Summary We’re looking for a high‑energy, Senior HVAC Engineer with extensive experience in dust collection systems to help deliver solutions to our clients.... ...Advanced Manufacturing clients. You will lead our Building Mechanical team members on projects, perform field...SeniorBuildingFull timeWork at officeRemote work- ...TITLE : Senior System Validation Engineer DUTIES: Validating complex embedded software interactions spanning propulsion, ADAS/AD, body, infotainment... ...software debugging. Test Automation & Tooling Work: Build and maintain automated test suites using Python, including...SeniorBuildingFull timeImmediate start
$120k - $150k
...with a growing clean energy company that is looking to add a Mechanical Engineer — Site Integration to their team. The role is focused on... ...understands how designs translate into buildable, installable systems in the field. Compensation is ~$120K–$150K base, with flexibility...SeniorLocal area$35 - $42 per hour
...experience with refrigerant systems experience - Example of specific... ...responsible for maintaining mechanical and electrical equipment for... .... This job is part of the Engineering and Technical Services job... ...pneumatic control systems used for building. This includes heating,...BuildingSecond job- ...Relationship Manager - Commercial Agriculture to lead a team and engage with clients to fulfill their financial needs. This role involves building a commercial loan portfolio and collaborating with team members to offer tailored bank solutions. The ideal candidate has...SeniorBuilding
$96.11k - $143.75k
...Position Overview The SR, Packaging Engineer position typically reports to a senior leader in the Packaging and Device Technology department. The Senior... ...packaging and device development as well as support systems. This individual also supports packaging innovation and...SeniorTemporary workFlexible hours$90k - $120k
...Permanent A leading energy management, temperature controls, and systems integration company We are a leading energy management,... ...controls, and systems integration company, providing complete building management systems and support. Why join us? Company mobile phone...BuildingPermanent employmentLocal area$120k - $168k
...Job Overview As a Senior Project Manager, you will lead projects and deliver exceptional... ..., empowering them to thrive and excel Build and maintain relationships with clients,... ...Qualifications Bachelor’s degree in a related field (Engineering, Architecture, Construction Management,...SeniorBuildingDaily paidWork at office- ...KBE Building Corporation is seeking a Preconstruction Manager based in Farmington, Connecticut. The role involves managing preconstruction services, preparing project estimates, and maintaining client relationships throughout the construction phase. The successful candidate...SeniorBuildingWork at office
$120k - $140k
...Regional Sales Team Manager to lead and grow our regional sales teams. This role is perfect for a motivated leader who thrives in the building materials industry, understands the hardscape market, and knows how to drive sales while coaching a high-performing team. The...SeniorBuildingFull timeFor contractors- ...Senior Budget Analyst Senior Budget Analyst Location: Hartford County, CT Type: Temporary, 6+ months Pay: $60-90/hr, based on experience... ...-range forecasts Lead the annual budget process including building budget files, training users, and generating approval reports...SeniorBuildingTemporary work
- ...Overview Join our high-energy team as a Senior Home Lending Advisor in Chase Home Lending... ...experience Marketing, promoting, relationship building, and consulting skills Intermediate PC... ...position. A National Mortgage Licensing System and Registry (NMLS) registration is...SeniorBuildingWork experience placementLocal areaRelocation
- ...Lifecycle Management: Define and support the building of desirable, feasible, viable, and... ...functional teams, including portfolio managers, engineers, and stakeholders, to drive product... ...process improvement. Participate in system demos, product reviews, and ensure the delivery...SeniorBuilding
$54.12k - $107.59k
**Job Family:** Buildings **Req ID:** 509992 **Position... ...building automation system equipment that has been... ...control system documents to engineering for as-built drawings... ...with Electro-mechanical systems, commercial/industrial... ...and user PC/software (Senior Level) + Demonstrated...SeniorBuildingPermanent employmentFull timeFor contractorsWork at officeLocal areaImmediate startNight shift- ...an Alliance Sales Executive, Associate Director specializing in SAP Tax Integration. The role involves leading sales activities, building relationships with major clients, and identifying new business opportunities in the U.S. market. Candidates should have extensive...SeniorBuildingFlexible hours
- ...Building Automation Solutions Senior Sales Executive Siemens is an Equal Opportunity Employer encouraging inclusion in the workplace. All qualified applicants will receive consideration for employment without regard to their race, color, creed, religion, national origin...SeniorBuildingLocal area
$125k - $150k
GovCIO is looking for a remote Sr. Front End Developer to enhance its Digital Services portfolio. The role requires expertise in building responsive interfaces using React, Redux, and JavaScript/TS, within a Ruby on Rails/Drupal stack. Applicants should have a Bachelor...SeniorBuildingRemote workFlexible hours- ...Come build something with Shepley Bulfinch as a Senior Healthcare Planner! We are seeking a healthcare planner to... ...current on planning trends, delivery systems, codes, regulations, and evidence... ..., regulatory requirements, engineering requirements, and interior design...SeniorBuildingFor contractorsFlexible hours
- ...found your future. We are seeking a Senior Geotechnical Engineer to join our growing team and play a... ...slope stability, and earth retention systems Complete geotechnical modeling,... ...Fun Team Culture : Regular team-building activities, happy hours, and company...SeniorBuildingPart timeWork at officeRemote workFlexible hours
$175k - $225k
...qualifications and experience. As a Senior Manager, you will lead client... ...You will be responsible for system configuration, business... ...solution. Modify and redevelop/engineer business processes based on... ...writing skills; and experience building dashboards, custom...SeniorBuilding$85k - $138k
...reach, we promise to know you and help you. CLA is dedicated to building a culture that invites different beliefs and perspectives to... ..., and each other. CLA is currently seeking an Audit Senior to join our State and Local Government (SLG) practice in our Northeast...SeniorBuildingLocal area- ...you've found your future. We're currently seeking a Senior Water Resources Engineer to join our growing team. In this role, you'll take on complex... ...on new challenges. Fun Team Culture : Regular team-building activities, happy hours, and company outings. The...SeniorBuildingPart timeWork at officeLocal areaRemote workFlexible hours
- ...recent fiscal year. We have an exciting career opportunity for a Senior Tax Manager to join our Tax Team. This position is a hybrid... ...opportunities. Develop a well‑defined marketing plan and work towards building your own book of business. What you musthave Bachelor’s degree...SeniorBuildingWork at officeLocal areaRemote workFlexible hours
$120k - $168k
...forward. What this job involves: As a Senior Project Manager, you will play a crucial... ..., empowering them to thrive and excel Building and maintaining relationships with... ...Bachelor's degree in a related field (Engineering, Architecture, Construction Management,...SeniorBuildingDaily paidWork at officeLocal area$75.5k - $174.13k
...We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At... ...within a defined geographic and segment-based territory. This is a senior individual contributor role responsible for sourcing, shaping,...SeniorBuildingFull timeLocal area$124k - $335k
...Senior Manager, Corporate Tax Generalist At PwC, our people in tax services focus on... ...messages that tell a holistic story. Apply systems thinking to identify underlying problems... ...provision and compliance software. Building and utilizing networks of client relationships...SeniorBuilding- ...seeking an experienced and motivated Senior Wastewater Analyst/Engineer to join our growing water/wastewater... ..., conveyance, and treatment systems Perform hydraulic modeling and system... ...Fun Team Culture : Regular team-building activities, happy hours, and company...SeniorBuildingContract workPart timeWork at officeRemote workFlexible hours
- ...accessible leadership The opportunity to do meaningful work with global reach and local impact At Gallagher, we are dedicated to building an inclusive and authentic workplace. If your past experience doesn’t align perfectly, we encourage you to join our to stay...SeniorBuildingLocal areaRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Mechanical Engineer - Building Systems. Be the first to apply!
- system performance engineer Hartford, CT
- operations support system engineer Hartford, CT
- operating system engineer Hartford, CT
- healthcare systems engineer Hartford, CT
- senior windows systems engineer Hartford, CT
- systems engineer Hartford, CT
- senior supervisor Hartford, CT
- senior clinical data manager Hartford, CT
- senior director clinical operations Hartford, CT
- senior implementation project manager Hartford, CT



