Executive Leadership

Jon Desmond
Jon Desmond

CEO

Bill Fleming
Bill Fleming

President, Cambridgeport

Peter DiMartino
Peter DiMartino

CFO

Brendan Abbott
Brendan Abbott

CIO

Ryan MacDonald
Ryan MacDonald

General Counsel + Executive VP

Brett O'Brien
Brett O'Brien

EVP, Operations

Bill Cleary
Bill Cleary

VP, Sales

Krista Springer
Krista Springer

Controller

Joseph McTernan
Joseph McTernan

Operations Manager, Randolph Facility

Brian D’Arcangelo
Brian D’Arcangelo

Chief Engineer

Erik Richman
Erik Richman

EVP, Safety + Quality

Mike O’Connor
Mike O’Connor

Production Manager, Georgetown

Alyssa Mignone
Alyssa Mignone

General Manager, Georgetown

Kristin Doerrer
Kristin Doerrer

VP, Marketing + Communications

Mr. Hooper
Mr. Hooper

Office Dog

Brett O'Brien

Jon Desmond

CEO

Jon is a third-generation family owner of Cox Engineering, a leading Mechanical Contractor and Manufacturer in the greater Boston area. As CEO, he is responsible for the on-going operations and growth of Cox Engineering, Cox Engineering Service, Cambridgeport Custom, and Cambridgeport Air Systems. Jon is a forward-thinking leader focused on continued industry expansion, investment, innovation automation, best in class software and customer service, while cultivating solid core values and a sought-after company culture. He started in 1996 as a shop laborer in their Brighton, MA facility and worked in the Estimating department while on summer breaks from college. Jon’s vision for Cox Engineering has united, renewed, and motivated all employees to do their best and pave the path for the Company’s continued advancement.

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Bill Fleming

Bill Fleming

President, Cambridgeport

Bill brings a wealth of experience in the HVAC industry to the Cambridgeport Group making him invaluable to our team. Bill is a current board member and previously served as the President of the New England Mechanical Service Contractors Association, as well as serving on the Joint Apprenticeship Committee of Local 537. Bill enjoys traveling, riding his Harley motorcycle, and spending time with his family.

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Peter DiMartino

Peter DiMartino

CFO

Peter DiMartino serves as Chief Financial Officer at Cox Engineering, bringing more than 25 years of experience in finance, operations, and strategic leadership across the construction, engineering, and private equity sectors. Throughout his career, Peter has led financial organizations through growth, operational transformation, and business expansion. He holds an MBA from UMass Boston and is actively involved in several industry and community organizations. Peter is focused on driving financial excellence, supporting sustainable growth, and advancing the company's long-term strategic vision. In his spare time, Peter enjoys coaching, golfing, and spending time with his family.

Brendan Abbott

Brendan Abbott

CIO

Brendan joined Cox Engineering full time in 2024 after collaborating as a consultant to the firm for over eight years. Brendan has a wealth of experience across construction, service, and manufacturing sectors, and a diverse skill set including being a Co-Founder and Partner in a technology consulting firm, and previous roles as CFO. His leadership is pivotal in aligning finance, technology, process, and data to drive decision making and gain efficiencies throughout the organization. Outside of work, Brendan enjoys spending time with his wife Cheryl and adult children, Brianna, and Thomas, keeping active running, biking, and attending his musician son’s gigs all around New England.

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Ryan MacDonald

Ryan MacDonald

General Counsel + Executive VP

Ryan began his career at Cox Engineering in 2020 after 19 years in private practice with a large Boston law firm. During that time, Ryan was outside counsel for Cox Engineering. As Executive Vice President and General Counsel, he is the executive leader of the legal and human resources functions at Cox Engineering. In addition, Ryan advises the Cox executive leadership team on business, legal, and human resources strategies. Ryan works closely with the Cox executive leadership team to identify, vet, and close on business acquisition opportunities. Ryan lives on the south shore and is married with three children. Outside of work, he enjoys spending time with family and friends, and in the fall, officiates Division 1 FBS college football.

Brett O'Brien

Brett O'Brien

EVP, Operations

Brett joined Cox Engineering in 1993 as an estimator. In 1995, he shifted gears to Cambridgeport Custom starting as an estimator. Over the years he has risen to Executive Vice President for the division. Brett is always pushing the limits of what can be done and how to do it better, which is evident in the units that leave the shop. He is an experienced soccer coach, an avid saltwater fisherman, enjoys hunting, and hitting the road on his Harley.

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Bill Cleary

Bill Cleary

VP, Sales

Bill joined Cambridgeport Custom in 1995 as a CAD Draftsman quickly advancing to Sales Engineer. He transitioned to Cambridgeport Air Systems as the Engineering Manager focusing on curbs, economizers, adapters, and accessories. Bill eventually returned to Cambridgeport Custom as the Sales Manager, where he immerses himself in expanding the footprint of custom AHU operations by developing strong market relationships and building the brand. Outside of work, he is an experienced home builder, an avid golfer, and enjoys restoring classic cars. Bill always enjoys spending time with his wife and three sons at the lake in New Hampshire or at Disney World!

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Krista Springer

Krista Springer

Controller

Since joining the company in 2016 as a Staff Accountant, Krista Springer now serves as Controller. She recently earned her MSA and is currently preparing for the CMA license, reflecting her commitment to continuous learning and professional growth. Outside of work, she loves spending time with family and friends, especially her first grandson, Lukas, who made her a proud “Gigi.” She also enjoys boating, fishing, bowling, dancing, motorcycle rides, and caring for her two Cane Corso mastiffs.

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Joseph McTernan

Joseph McTernan

Operations Manager, Randolph Facility

Joseph (Joe) joined Cambridgeport Custom in 2019 as a Purchasing Manager. In 2021, he began to shift gears, diving back to his roots in driving production and processes forward; eventually rising within the division to Operations Manager. Joe is dedicated to his craft, and it shows in the passion and energy he brings to Cambridgeport and the manufacturing team daily. Outside of work, Joe enjoys spending time with his wife and pets; swimming in the pool and grilling in the back yard during the summer and honing his culinary skills and watching sports during the colder months.

Brian D’Arcangelo

Brian D’Arcangelo

Chief Engineer

Brian joined Cambridgeport in April 2006 as an Engineering and Production Manager and has since moved into the role of Manufacturing Planning Manager after serving as Operations Manager. Outside of work, Brian enjoys spending time with family and friends, cheering on the Patriots from wherever they can pull off a win, relaxing at his camper in Old Orchard Beach, and staying active through hiking, kayaking, and biking.

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Erik Richman

Erik Richman

EVP, Safety + Quality

Erik officially joined Cox Engineering in January 2024 after serving as a Safety Consultant since 2010. With his vast knowledge and experience, Erik brings expertise in risk management, quality assurance, and safety support. His list of hobbies is as extensive as they are eclectic, from hunting and fishing to card games and Legos. Once the safety rebel, he ow champions safety with gusto, recognizing the importance of keeping everyone secure. He firmly believes in the creativity and talent of those doing the groundwork, seeing them as the true drivers of organizational success.

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Mike O’Connor

Mike O’Connor

Production Manager, Georgetown

Mike has been a cornerstone of Cambridgeport for more than 35 years, joining the company in 1990. He began on the curb production line before gaining hands-on experience across numerous manufacturing operations throughout the plant. His versatility, technical expertise, and leadership led to roles as Leadman in the Structural Steel department and later Foreman, overseeing accessory welding, adapter production, and ISO curb manufacturing. Mike also played a key role in Cambridgeport’s relocation from Salisbury to Georgetown, Massachusetts, helping design and establish the Georgetown production floor. After serving as Plant Superintendent, he was promoted to Production Manager in June 2026, where he now oversees production operations and helps lead Cambridgeport’s expansion into the rapidly growing data center market. His decades of experience and institutional knowledge make him a valued leader and mentor within the organization.

Alyssa Mignone

Alyssa Mignone

General Manager, Georgetown

Alyssa joined Cambridgeport in January 2022 as Inside Sales Manager and quickly established herself as a key leader within the organization. After taking on responsibility for the estimating team the following year, she was promoted to Director of Inside Sales, where she helped drive operational excellence, strengthen customer relationships, and support the company's continued growth. Most recently, Alyssa was promoted to General Manager, reflecting her leadership, industry expertise, and commitment to the success of both her team and Cambridgeport as a whole. When she's not at work, Alyssa enjoys spending time with her three children and family dog.

Kristin Doerrer

Kristin Doerrer

VP, Marketing + Communications

Kristin Doerrer joined Cambridgeport in 2025, bringing more than 25 years of experience building and elevating brands across apparel, footwear, sports, and technology. With a passion for storytelling and a collaborative leadership style, she is focused on strengthening Cambridgeport’s brand, expanding its digital presence, and helping drive the company’s next chapter of growth. Outside of work, Kristin enjoys coaching her kids’ sports teams, playing flag football, and spending time in the mountains.

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Mr. Hooper

Mr. Hooper

Office Dog

Mr. Hooper joined Cambridgeport Custom in 2024 after relocating from Morgans Point Ranch in Chewelah, WA. He has a nose for adventure after graduating from two months of Bird Hunting 101. Hooper is a natural when he’s in the office, always welcoming visitors, sniffing out treats, and adding to the 'pawsitive' culture. When he’s not in the office you can find him hunting birds or out on the water fishing.