Project Engineer, Mechanical

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 a Project Engineer to join the HVAC department at our Philadelphia office. The Project Engineer is a technically skilled and experienced engineer with excellent communication, coordination, project management and leadership skills. The Project Engineer is expected to proactively coordinate, communicate, problem solve across disciplines, and exhibit the ability to balance the client relationship with an understanding of the project’s financial goals.

As a Project Engineer, you’ll play a key role in managing and executing electrical engineering projects from design through completion. You’ll collaborate across disciplines, communicate directly with clients, and help ensure that both technical excellence and project financial goals are achieved.

Key Responsibilities

• Leads the design on Tenant fit-out projects and is a key designer on base building/infrastructure upgrades; assembles riser diagrams, schedules, and floor plans; participates in specification writing.
• Assists in establishing design criteria from the project proposal and assembles basis of design documents.
• Assembles a complete set of contract documents for their trade including the lay out main equipment rooms, closets, shafts, risers, etc.
• Leads design for their trade’s ancillary systems required for a project and can assemble scope associated drawings with these systems (e.g., UPS, generators, fuel oil, secondary water pumps, water reclamation system, etc.).
• Reviews shop drawings, RFI’s, Contractor change orders, performs site visits and punch-lists with limited supervision to verify that designs are being implemented accurately.
• Assists in establishing an efficient project schedule for his/her project team that ensures appropriate use of resources while adhering to deadlines.

Minimum Qualifications

• Bachelor’s degree in mechanical or electrical engineering
• 3-6 years of experience
• Excellent oral and written communication skills
• Proficient in all design calculations and software tools (e.g., Revit and AutoCAD) applicable to their discipline
• Strong understanding of trade-specific scope of project, trade-related codes, and the required coordination with other trades
• Strong understanding of documentation requirements and content for each deliverable phase (e.g., SD, DD, CD and specifications)
• Proficient in all design calculations and software tools (e.g., Revit and AutoCAD) applicable to their discipline

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 : $93,000-$100,000 a year

Jaros, Baum & Bolles is an equal opportunity employer. All qualified candidates will receive consideration for employment without regard to race, ethnicity, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, marital status, military veteran status, unemployment status, or any other status protected by law.