Senior Mechanical Engineer
Confirmed on the employer's own hiring board on Oct 18, 2026. First seen by Alion on Oct 15, 2026. STV scores B on the Alion truth index.
STV is seeking an experienced Mechanical Engineer to join our Buildings team in Boston. This position is responsible for leading the design and delivery of mechanical systems for a diverse portfolio of commercial, institutional, healthcare, higher education, federal, transportation, and public-sector projects. The successful candidate will provide technical leadership throughout all phases of project development, from concept and schematic design through construction administration. The successful candidate will support the planning, design, and delivery of mechanical building systems for a diverse portfolio of public and private sector projects. This position will contribute to high-quality, code-compliant solutions from early design through construction while supporting client relationships, technical coordination, and staff development.
Experience 13+ years
Key Responsibilities:
- Plan, design, and deliver HVAC and mechanical systems for building-focused projects.
- Develop mechanical design concepts and perform engineering calculations, system sizing, and equipment selections.
- Prepare construction documents, design reports, technical specifications, and cost estimates.
- Perform HVAC load calculations, energy modeling, ventilation analyses, life-cycle cost evaluations and code compliance reviews.
- Coordinate with architects, structural engineers, electrical engineers, plumbing/fire protection engineers, and other project stakeholders.
- Support project leadership activities, including scope development, scheduling, budgeting, and resource planning.
- Lead mechanical tasks and workstreams while coordinating deliverables across multidisciplinary project teams.
- Meet with clients to discuss project requirements, present technical recommendations, and support resolution of design issues.
- Mentor and guide junior engineers, designers, and BIM/Revit staff.
- Stay current with evolving building technologies, energy codes, decarbonization strategies, and industry best practices.
About STV Buildings:
- STV's Buildings Division provides integrated engineering, architecture, planning, and construction management services for both public agencies and private-sector clients nationwide.
- Transit terminals and transportation facilities
- Maintenance and operations facilities
- Commercial and mixed-use developments
- Healthcare and public health facilities
- Government and municipal facilities
- Public safety, law enforcement, and correctional facilities
- Industrial and manufacturing facilities
Required Qualifications:
- Bachelor's Degree in Mechanical Engineering from an accredited institution.
- Professional Engineer (PE) license required. · Minimum of 13 years of relevant experience in HVAC and mechanical systems design for commercial, industrial, municipal, institutional, transportation, and government facilities.
- Demonstrated experience leading mechanical design tasks or projects and mentoring junior technical staff.
- Strong knowledge of HVAC systems, chilled water and heating hot water systems, ventilation and exhaust systems, building automation and controls coordination, and energy-efficient building systems.
- Proficiency with Revit and BIM-based design workflows, including 3D mechanical modeling.
- Experience using HVAC load calculation and energy modeling software.
- Competency with Microsoft Office Suite, including Word and Excel.
- Working knowledge of ASHRAE standards and guidelines, NFPA standards, building codes, mechanical codes, energy codes, and applicable local/state requirements.
- Experience preparing specifications, technical reports, construction documents, calculations, and cost estimates.
- Strong verbal and written communication skills with the ability to coordinate effectively with clients, agencies, and project stakeholders.
Preferred Qualifications:
Compensation Range:
$160,647.46 - $183,597.09STV offers the following benefits
- Health insurance, including an option with a Health Savings Account
- Dental insurance
- Vision insurance
- Flexible Spending Accounts (Healthcare, Dependent Care and Transit and Parking where applicable)
- Disability insurance
- Life Insurance and Accidental Death & Dismemberment
- 401(k) Plan
- Retirement Counseling
- Employee Assistance Program
- Paid Time Off
- Paid Holidays
- Back-Up Dependent Care
- Parental Leave
- Continuing Education Program
- Professional Licensure and Society Memberships
STV is committed to paying all of its employees in a fair, equitable, and transparent manner. The listed pay range is STV’s good-faith salary estimate for this position. Please note that the final salary offered for this position may be outside of this published range based on many factors, including but not limited to geography, education, experience, and/or certifications.
Not sure this role is the perfect match? We encourage you to apply if STV’s work and values resonate with you. We know great candidates don’t always meet every qualification, and research shows women and people of color are less likely to apply unless they do. At STV, we believe strong talent comes from a wide range of backgrounds, and your skills and experience may align with this or another opportunity as we continue to grow.