About Jeff Gray II

The engineer who came up through the field.

Jeff came up through the construction industry itself, not just the classroom, and that shapes everything about how JGray Engineering works.

Jeff Gray II, PE, founder of JGray Engineering, at a custom home framing site in New England
Jeff Gray II, PE · Founder

Jeff Gray II is a licensed structural engineer and the founder of JGray Engineering LLC. He grew up in and around the construction industry through his family's structural design and specialty lumber business, learned residential building from both the design side and the field, and built his practice around the work he knows best: high-end custom residential construction across New England.

Growing up in the industry

Childhood through school

A childhood spent in the yard and on job sites.

Jeff's father owns Structural Wood Systems, a specialty structural lumber yard and design business in Bellingham, MA. Growing up, Jeff was around the work constantly from a very young age: riding to job sites, walking through homes at every stage of construction, and seeing how a set of plans becomes a finished house.

By high school he was working at the yard, and he kept at it through his Civil Engineering degree at UMass Amherst, working summers and winters between semesters. Those seasons were split between the yard and the office: cutting I-joists and beams, running saws and forklifts, stacking framing packages for delivery, creating material lists, reading architectural plans, and drafting and designing framing plans. He learned the business from the material up.

Learning Residential From Every Angle

The EIT years

From the drafting table to the framing crew, and back with more to give.

After graduating college, Jeff joined Structural Wood Systems full time as an engineer in training, designing single family homes. After a year as an EIT he left the desk to frame houses with GVN Construction, thinking that there is no better way to understand construction than to do it himself. The framing sequences, the trade conflicts, the gap between what reads clearly on paper and what actually works on site: he learned all of it firsthand, with his hands. Designing plans is one thing; building homes with your own hands teaches you what you never learn at the desk.

He came back to engineering wanting to learn faster, working at Structural Wood Systems full time while also working part time for another firm, DWD Engineering. Jeff sought out all of the best teachers he could learn from, to learn this industry as well as he possibly could.

He then spent over four years at Siegel Structural, again specializing in high-end custom homes alongside some podium and light commercial work. Those years were spent collaborating with well respected and award winning architecture firms across the region, which is where Jeff developed a genuine fluency in how architects think, what they protect, and what preserving design intent actually requires in practice.

JGray Engineering

Est. 2023

A practice built around one kind of work, done well.

In 2023, Jeff earned his PE license and launched JGray Engineering LLC. The decision was deliberate: to build a practice focused on the market he knows best, working with the architects and builders who care most about getting it right, in the places where the best custom residential work in New England happens.

JGray is not a generalist firm. It is a specialist practice, built around one type of project, one standard of work, and a way of engineering that comes from having spent real time on both the design side and the building side of a home.

Credentials & licensing
PE
Licensed engineer
Professional Engineer, MA License 58165. Structural engineering for high-end custom residential construction.
5 states
Open for business
Licensed in Massachusetts, Rhode Island, Vermont, New Hampshire, and New York, with more to come as the work grows.
UMass
Civil Engineering
Bachelor of Science in Civil Engineering, University of Massachusetts Amherst, with years of industry experience already in hand at graduation.
How we work

What makes JGray different in practice

Designed to be built, not just stamped

Having framed the structures he now engineers, Jeff designs with the crew and the build sequence in mind. Trade conflicts and tough field conditions get caught during design, on paper, where they are cheapest to solve instead of most expensive to discover.

Structure that protects the design

Jeff engineers around what the architecture is reaching for: the open spans, the sightlines, the ceiling heights a design depends on. The goal is a structural solution that lets the vision stand, not one that asks the design to retreat to what is easy to build.

In it from the first sketch

The earliest structural input is the cheapest leverage on a project. JGray works best brought in during schematic design, alongside the architect from the first sketch and the builder from preconstruction, before the costly decisions are locked.

You work directly with Jeff

The person who designs your structure is the person who answers for it in the field. No intake coordinator, no handoff, which is how questions get resolved in hours instead of days and nothing gets lost in translation.

Work with Jeff

Bring us in early. The best results start before the drawings.

Currently accepting new projects across Massachusetts, Rhode Island, and the broader Northeast.

Start a project

© 2026 J GRAY ENGINEERING LLC

PE LICENSED MA - RI - NY - VT - NH