3 summer 2026 jobs found in Philadelphia

What We're Looking For At HNTB, you can build a meaningful career while working on infrastructure that shapes our communities. With over 100 years of industry leadership, HNTB is a trusted partner for delivering complex transportation projects nationwide. Our Signals, Communications & Train Control group plays a vital role in modernizing rail and transit networks through the application of cutting-edge technology and engineering expertise. We are seeking a motivated and detail-oriented Co-Op Engineer to join our Signals, Communications & Train Control team for the Spring/Summer 2025 - 2026 term. In this role, you will assist with the planning, design, and delivery of wayside signal systems, train control circuits, and communications infrastructure for passenger rail, commuter rail, light rail, and streetcar projects. This position is based out of our Philadelphia, Pennsylvania office. Relocation and housing is NOT included. This is an exciting opportunity to gain...

Join JB&B and shape the future of the built environment! Founded in1915,Jaros, Baum & Bolleshas 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,...

At Ballinger, we are passionate about complex challenges and re-world problem-solving. Design challenges come in all shapes and sizes, and the ones we prefer test us as design professionals. We seek out complex projects with big impact because they require us to ask tough questions, synthesize data, and push past the boundaries of existing answers into the realm of innovative solutions. Ballinger team members thrive on those challenges because our clients do, too: our work for them enables their ambitious endeavors in science and medicine, research and government, manufacturing, and technology. Ballinger welcomes ambition with career development, mentorship, and leadership opportunities. Here ideas will always be more important than hierarchy because they result in buildings as transformative as the missions they serve. Position Summary This entry-level engineering role is responsible for the analysis and design of systems-related facilities, utilities, and infrastructure. Project...