Intern Engineer: Rail & Transit – Summer 2026

Intern Engineers For Rail & Transit

At HNTB, you can create a career that is meaningful to you while building communities that matter to all of us. For more than a century, we have been delivering solutions for some of the largest, most complex infrastructure projects across the country. With our historic growth, it is an exciting time to join our team of employee-owners. Through the delivery of innovative public transit and rail solutions, HNTB is partnering with transit authorities to better connect people and places in communities across the country. Our Chelmsford office is seeking Intern Engineers looking to help deliver some of the region's biggest and most complex public transportation projects within Rail & Transit for Summer 2026.

This opportunity entails being responsible for assisting the Massachusetts Rail & Transit department on assigned project(s) by performing basic engineering related tasks which may reflect elements of standard post-secondary engineering curriculum. Available Opportunities in:

• Track Engineering - Assists with rail layout and alignment studies - Supports grading and drainage design - Helps prepare drawings and calculations for track geometry
• Communications Systems - Supports design of fiber optic networks, radio systems, and data systems - Assists with video surveillance, access control, and passenger information systems - Helps prepare CAD drawings, specifications, and cost estimates
• Signals and Train Control - Aids in developing circuits for switches, signals, and crossings - Supports layout of signal blocks and interlockings - Assists with safety documentation and compliance reviews
• Traction Power - Supports design of substations, switchgear, and power distribution systems - Helps prepare load flow and short circuit studies - Assists with grounding and lighting designs for facilities
• Overhead Contact Systems - Contributes to layouts of catenary systems and support structures - Assists with material lists and construction drawings - Supports inspections and field surveys of existing OCS installations

What You'll Do:

• Assists engineer teams in various tasks and duties.
• Assists Engineer with research, development and design of projects.
• Assists Engineer with the preparation of engineering drawings and documents as assigned.
• Performs other duties as assigned.

What You'll Need:

• High School Diploma/GED or equivalent plus current enrollment in an accredited post-secondary engineering program

What You'll Bring:

• An understanding of engineering, geometric, and algebraic principles at a basic level.
• Proficiency with Microsoft Office Suite.
• An understanding of introductory shop drawing and submittal procedures and requirements.
• The ability to perform basic engineering calculations.
• The ability to organize information for use in drawings or other documents.
• Strong communication and teamwork skills.
• Strong analytical and problem-solving skills, with attention to detail.
• Willingness to learn and take initiative in a dynamic work setting.

What We Prefer:

• Completion of 2 years of post-secondary engineering program including:
• Civil (Track Engineering or Overhead Contact Systems)
• Mechanical (Overhead Contact Systems)
• Electrical (Communications Systems, Signals and Train Control, or Traction Power)
• AutoCAD and/or MicroStation experience
• Strong interest in transportation and infrastructure

Locations:

Chelmsford, MA (Lexington)