Engineer, Mechanical in Boston

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Job DescriptionJob Description

Join JB&B and shape the future of the built environment! 
 
Founded in 1915, Jaros, Baum & Bolles has been a pillar of engineering innovation in New York City for over a century. Specializing in mechanical, electrical, plumbing (MEP), JB&B has contributed to some of the most iconic buildings. 

In October 2025, JB&B joined forces with Trinity Consultants, a global consulting firm focused on the natural and built environments. JB&B now operates within Trinity’s Built Environment division, combining its deep expertise in high-performance building systems with Trinity’s strengths in acoustic design, facility operations, commissioning, and technology strategy. 

This strategic merger expands JB&B’s capabilities and offers employees: 

• Access to a broader portfolio of international projects and clients 

• Enhanced career mobility across Trinity’s global network 

• Interdisciplinary collaboration with experts in sustainability, environmental science, and digital infrastructure 

About the Role

We are seeking qualified, confident, and collaborative Entry-Level Engineers to join our HVAC and Plumbing & Fire Protection departments in our Boston office.  This is an exciting opportunity to launch your engineering career with a firm known for innovation, mentorship, and technical excellence.

As an Engineer at JB&B, you'll work on a wide variety of projects-ranging in size, complexity, and duration-across multiple sectors.  You'll collaborate with senior engineers and partners, gaining hands-on experience while contributing to meaningful client solutions.

Key Responsibilities

• Complete tasks on fit-out, base building, and infrastructure upgrade projects
• Assemble riser diagrams, schedules, and floor plans
• Assist in planning and coordination of major distribution systems, equipment rooms, closets, shafts, and risers
• Review shop drawings and perform site visits and punch lists under senior supervision
• Design HVAC systems including distribution, recirculation, and exhaust
• Design plumbing systems including water, gas, and waste distribution
• Work on facility utilities such as chilled water, heating water, steam, and condensate
• Lay out sprinkler systems and perform basic calculations for pipe sizing, design densities, and pump horsepower

Minimum Qualifications

• Bachelor's degree in mechanical engineering or a related field (by Summer 2026)
• Strong analytical, communication, and organizational skills
• Eagerness to learn and grow in a collaborative environment
• Interest in building systems, sustainability, and innovative design 

Why Work at JB&B?

• Legacy + Innovation: Our company blends a rich history with forward-thinking design, including smart building systems and deep carbon reduction strategies. 

• Collaborative Culture: With over 400 professionals, our company fosters mentorship, teamwork, and continuous learning. 

• Global Impact: Now part of Trinity, our company offers opportunities to work on transformative projects across commercial, healthcare, aviation, life sciences, and data center sectors. 

• Multiple office locations: New York, Boston and Philadelphia. 

What We Offer

• Hybrid workplace offering the flexibility to work both from home and the office 

• Comprehensive benefits package including 401k employer match and stock options 

• Paid time off (PTO), volunteer program and employee resource groups 

• Training and professional development courses through JB&B University 

Estimated compensation range: $79,000-$82,000 annual salary

Jaros, Baum & Bolles is an equal opportunity employer. All qualified candidates will receive consideration for employment without regard to , , , , , , , , , , marital status, military veteran status, unemployment status, or any other status protected by law. 
 

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