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Here are the biggest engineering firms in Massachusetts
The 25 largest engineering firms in Massachusetts reported approximately $1.25 billion in cumulative engineering billings from offices located in the Bay State. The online version of this ranking expands beyond what appears in print; another 46 engineering firms are included in our digital rankings, in addition to the 20 featured in this week’s print edition. This week’s List is part of a shift in our research methodology and philosophy in 2025, one that will emphasize more data and context for readers while better coordinating the resources available to us and our 46 sister publications under the American City Business Journals flag. We anticipate this effort will identify thousands of new local records — and cumulatively, tens of thousands of new businesses across ACBJ’s footprint — this year alone. Information on The List was obtained through BBJ research or supplied by individual firms through questionnaires that the BBJ could not independently verify. In case of ties, firms are ranked by Mass. employees, total employment and then listed alphabetically if ties remain. Additionally, companies that did not respond to employment surveys but were still included on this year’s List are sorted by estimated total employment figures derived from BBJ archives; annual filings with the U.S. Department of Labor; and other firm-specific resources. For information about this and other BBJ Lists, please contact Associate Editor Sean McFadden at smcfadden@bizjournals.com.