January 13, 2026 – New York, NY – Morgan Stanley Capital Partners (MSCP), the middle‑market private equity team within Morgan Stanley Investment Management, announces a majority investment in Olsson, Inc., a leading employee‑owned engineering and design firm headquartered in Lincoln, Nebraska. This transaction includes significant reinvestment by Olsson employees and positions MSCP as Olsson’s first institutional investor, supporting the firm’s continued growth in infrastructure design across technology, transportation, water, power, industrial, and federal markets.
January 13, 2026 – Rochester, NY / Boston, MA / Portland, ME – Salas O’Brien, a national engineering and technology services firm, announces that RFS Engineering, a 100+ person consulting firm with expertise in mechanical, electrical, plumbing, fire protection, technology, structural, civil engineering, sustainability, and energy consulting, has joined the company. This strategic merger expands Salas O’Brien’s multidisciplinary capabilities and strengthens its presence across New England, enhancing its ability to deliver complex engineering solutions for educational, healthcare, corporate, industrial, hospitality, and government clients.
January 13, 2026 – Minneapolis, MN – WSB LLC (WSB), a national infrastructure engineering and consulting firm, announces the acquisition of NEO Virtus Engineering, a specialized engineering consulting firm focused on photovoltaic (PV) and energy storage system design. This acquisition expands WSB’s power and energy engineering capabilities and strengthens its ability to deliver comprehensive renewable energy and grid‑edge infrastructure solutions across the United States.
January 12, 2026 – Washington, DC – Arlington Capital Partners, a Washington, D.C.‑area private investment firm focused on government‑regulated industries, announces the acquisition of Pond & Company, a full‑service design, engineering, planning, and construction management firm serving federal, energy, infrastructure, and life sciences markets. This transaction marks the first platform investment from Arlington’s recently closed oversubscribed $6 billion Fund VII, and positions Pond & Company for accelerated growth across critical infrastructure and regulated end markets.
January 12, 2026 – Cleveland, OH – BNP Group, a leading air transportation design and engineering firm backed by Godspeed Capital Management, announces the acquisition of Airport Gurus, a provider of airport planning, design, and program management services. This transaction expands BNP Group’s aviation and transportation infrastructure capabilities and strengthens its ability to deliver comprehensive solutions for airport owners, operators, and stakeholders nationwide.
January 8, 2026 – Tampa, FL – Verdantas, a leader in digitally enabled technical consulting solutions for the environment, water, and energy transition markets, announces the acquisition of PACE Engineers, Inc., a multidisciplinary engineering, surveying, and environmental consulting firm headquartered in Washington and Oregon. This acquisition expands Verdantas’ multidisciplinary services and enhances its presence in the Pacific Northwest, broadening its civil and structural engineering, land surveying, planning, landscape architecture, and environmental consulting capabilities.
January 8, 2026 – Rock Island, IL – IMEG Corp., a national engineering design firm, announces that CFR Engineering, a Maryland‑based firm recognized for its work supporting federal agencies and mission‑critical infrastructure programs, has joined the company. This addition strengthens IMEG’s technical capabilities in high‑complexity civil and infrastructure engineering and expands its presence in the Mid‑Atlantic region to better serve government and private‑sector clients.
January 7, 2026 – Baton Rouge, LA – Cajun Engineering Solutions, a Baton Rouge‑based civil engineering and design firm and subsidiary of Cajun Industries Holdings, announces the acquisition of the engineering office of Primoris Design and Construction Inc. in Tyler, Texas. This strategic expansion broadens Cajun Engineering Solutions’ footprint in the Gulf Coast and south‑central U.S. markets and enhances its ability to pursue larger, integrated engineering and EPC opportunities across Texas and neighboring states.
January 7, 2026 – Los Angeles, CA – Psomas, a national planning, engineering, and surveying firm, announces the acquisition of Anderson Engineering Company, Inc., a Saratoga Springs, UT‑based civil engineering and consulting firm. This acquisition expands Psomas’ civil engineering and land development capabilities, broadens its geographic footprint in the Intermountain West, and enhances its ability to serve clients across transportation, water, municipal, and infrastructure markets.
January 6, 2026 – New York, NY – Blackstone Energy Transition Partners, the energy‑focused private‑equity strategy of Blackstone, announces the acquisition of Alliance Technical Group (ATG), a Decatur, Alabama–based provider of environmental testing, monitoring, and compliance services. This strategic investment enhances Blackstone’s portfolio in environmental compliance and industrial services and supports ATG’s continued growth in emissions testing, laboratory analysis, continuous emission monitoring systems (CEMS), and leak detection services. The acquisition positions ATG for expansion across the power, energy, and industrial sectors and aligns with Blackstone’s broader energy‑transition investment strategy.
January 6, 2026 – Cleveland, OH & Dallas, TX – Align Capital Partners (ACP), a middle‑market private equity firm focused on architecture, engineering, and consulting (AEC) and essential services businesses, announces the acquisition of Armko Industries (Armko), a provider of specialized building envelope products and services. This transaction establishes Armko as ACP’s newest platform within its AEC sector portfolio, enhancing its ability to support customer needs in façade, roofing, and enclosure design and installation across key commercial and institutional markets.
January 5, 2026 – Dallas, TX – Jacobs Solutions Inc. (Jacobs), a global provider of engineering, consulting, and program management services, announces the acquisition of the remaining stake in PA Consulting, a London‑based innovation and transformation consultancy. This transaction gives Jacobs full ownership of PA Consulting, enhancing its advisory, digital transformation, and high‑value consulting capabilities while strengthening its ability to deliver integrated solutions across infrastructure, energy, defense, healthcare, and life sciences markets.
January 5, 2026 – Dallas, TX – Dallas Cothrum’s Family of Companies, a platform of integrated professional services, announces the acquisition of USA Engineers, a Dallas‑headquartered civil engineering and surveying firm. Effective January 1, 2026, USA Engineers will operate alongside Masterplan Consultants, expanding the combined organization’s planning, civil engineering, and land‑surveying capabilities across North Texas while providing uninterrupted service and a broader, end‑to‑end development services platform for municipal, private‑sector, and infrastructure clients.
January 5, 2026 – New York, NY – Hazen and Sawyer, a national water resources and environmental engineering firm, announces that WQTS has joined the company. WQTS, a provider of water quality testing, source water protection, and related laboratory services, expands Hazen and Sawyer’s technical offerings and enhances its ability to deliver integrated water quality and resource management solutions for public and private clients nationwide.
January 5, 2026 – Columbia, SC – IMEG Corp., a national engineering design firm, has acquired Buford Goff & Associates (BGA), a multidisciplinary firm specializing in mechanical, electrical, security, and communications engineering. The addition marks IMEG’s entry into South Carolina and supports its continued expansion across the Southeast. PSMJ initiated the transaction and provided transaction advisory services to Buford Goff & Associates.
January 5, 2026 – Houston, TX – DJA, LLC, a multidisciplinary engineering and consulting firm, announces a strategic partnership with Creative Engineering Group, LLC, a design and technical consulting practice specializing in civil and structural services. The partnership expands DJA’s service capabilities, enhances its integrated design delivery model, and strengthens its position in key infrastructure and commercial markets across Texas and the Southwest.
January 2, 2026 – Brownsville, WI – Mi‑Tech Services, Inc., a full‑service engineering, design, and construction services firm within the Michels Family of Companies, announces the strategic merger with J.D. Hair & Associates, Inc., a trenchless, geotechnical, and structural engineering specialist. The combined organization will operate under the Mi‑Tech name, enhancing its technical capabilities and expanding its suite of services across utility, infrastructure, and alternative delivery solutions nationwide.
December 22, 2025 – New York, NY – Sandbrook Capital, in partnership with funds managed by Blackstone Credit & Insurance, announces the acquisition of United Utility Services from Bernhard Capital Partners. United Utility Services is a provider of utility construction, maintenance, and repair services for electric, gas, water, and fiber infrastructure. This acquisition expands Sandbrook Capital’s footprint in the utility infrastructure services market and enhances its ability to support mission‑critical energy and broadband programs nationwide.
December 18, 2025 – Boca Raton, FL – Geosyntec Consultants, a global provider of environmental engineering, science, and consulting services, announces the acquisition of Longenecker & Associates (L&A), a solutions provider supporting U.S. Department of Energy missions, environmental remediation, and federal infrastructure programs. The acquisition accelerates Geosyntec’s growth in the federal sector, broadens its technical service capabilities, and expands its ability to serve complex environmental, energy, and regulatory challenges across government and commercial markets.
December 2, 2025 – Philadelphia, PA – Burns Engineering, Inc. (Burns), a provider of specialized engineering, technical design, and consulting services for transportation, critical infrastructure, and the built environment, announces a strategic investment from OceanSound Partners, a growth‑oriented private equity firm focused on technology and technology‑enabled services companies serving government and highly regulated enterprise end markets. This investment will support Burns’ continued expansion, strengthen its engineering capabilities, and accelerate its ability to deliver complex, mission‑critical infrastructure solutions across aviation, rail, power, utility, higher education, and healthcare markets.
December 2, 2025 – Denver, CO – Legence Corp. (Legence), a national provider of MEP engineering, consulting, installation, and maintenance services backed by Blackstone, announces the acquisition of Innovative Mechanical & Design, LLC (IMD), a Northern Colorado–based firm known for its installation, service, and fabrication expertise supporting healthcare, pharmaceutical, higher education, semiconductor, and hyperscale clients. This acquisition expands Legence’s technical and service capabilities, enhances its national platform, and positions the combined company to deliver broader, mission‑critical MEP solutions across key industry sectors.
December 3, 2025 – Orlando, FL – Qualus Corporation (Qualus), a leading pure‑play power solutions firm focused on grid modernization, resiliency, and energy infrastructure transformation, announces the acquisition of Aquawolf, the transmission and distribution engineering subsidiary of Mammoth Energy focused on high‑voltage transmission infrastructure. The acquisition expands Qualus’ transmission and distribution engineering expertise with new offices in San Diego, Denver, and Vancouver, WA, and strengthens its ability to deliver comprehensive services across routing, conceptual and detailed design, and construction support for critical power grid projects.
December 4, 2025 – Brookfield, CT – Haley Ward, Inc., a full‑service professional consulting firm offering engineering, environmental, surveying, planning, and design services, announces the acquisition of CCA LLC, a Brookfield, Connecticut‑based consulting engineering and land surveying company with expertise in civil engineering, environmental consulting, landscape architecture, and planning. The acquisition strengthens Haley Ward’s presence in Southern New England by establishing its third Connecticut office and broadens its multidisciplinary service offerings to better serve public‑ and private‑sector clients throughout the region.
December 4, 2025 – Jericho, NY – J.S. Held, a global consulting and advisory firm, announces the acquisition of GLI Advisors, a West Coast and Hawaii‑focused construction project and community development consulting firm with expertise in project and program management, owner’s representation, construction management, feasibility and cost review, and capital and physical needs assessment. This acquisition expands J.S. Held’s project support services on the U.S. West Coast and strengthens its ability to deliver comprehensive construction advisory and program management solutions across key markets.
December 8, 2025 – Reston, VA – Bowman Consulting Group Ltd. (Bowman), a national engineering, program management, and infrastructure services firm, announces the acquisition of RPT Alliance, a Houston‑based engineering firm specializing in natural gas transmission systems and utility‑scale power generation infrastructure for data centers, industrial facilities, and utilities. This strategic acquisition broadens Bowman’s power and utilities practice by adding expertise in microgrid, bridging power, and high‑reliability energy solutions, enhancing the firm’s ability to deliver comprehensive energy and infrastructure engineering services nationwide.
December 8, 2025 – Jacksonville, FL – MSA Professional Services, Inc. (MSA), a 100 % employee‑owned consulting and design firm, announces the acquisition of Haddad Engineering, Inc., a Jacksonville‑based electrical and mechanical engineering firm with a strong reputation for technical excellence across commercial, educational, healthcare, residential, recreational, and municipal projects. The acquisition expands MSA’s presence in Florida, enhances its multidisciplinary engineering capabilities, and combines Haddad’s deep regional expertise with MSA’s broader resources to better serve clients throughout the Southeast and beyond.
December 9, 2025 – Pittsburgh, PA – Stratus Team, LLC (Stratus), an integrated engineering, architecture, and consulting firm, announces the acquisition of E.A. Bonelli + Associates, Inc., a California‑based design firm renowned for its industrial and food & beverage facility planning and engineering services. This acquisition expands Stratus’ capabilities in industrial and food & beverage design and strengthens its national presence in these specialized markets.
December 15, 2025 – Montreal, QC – WSP Global Inc. (WSP), a leading global professional services firm specializing in engineering, design, and consulting, announces an agreement to acquire TRC Companies (TRC), a U.S. firm renowned for its power and energy, utilities, environmental services, and program management expertise, in an all‑cash transaction valued at approximately US$3.3 billion. The proposed acquisition is expected to position WSP as the largest engineering and design firm in the U.S., supercharging its Power & Energy offering while enhancing capabilities across water, infrastructure, and environmental service lines. TRC’s deep technical knowledge and extensive U.S. team broaden WSP’s reach across critical infrastructure markets and support its strategic growth plan.
December 15, 2025 – Rockville, MD – Apex Companies, LLC (Apex), a national consulting and engineering services firm, announces the acquisition of AquaWorks DBO, Inc. (AquaWorks), an award‑winning civil and environmental engineering firm specializing in decentralized water and wastewater treatment solutions. The acquisition enhances Apex’s end‑to‑end water infrastructure capabilities—particularly for small‑volume wastewater systems—and expands its ability to deliver innovative, cost‑effective, regulatory‑compliant solutions nationwide.
December 15, 2025 – Jacksonville, FL – PRIME AE Group, Inc. (PRIME AE), a multidisciplinary engineering and architecture firm, announces the acquisition of Faller, Davis & Associates, Inc. (Faller Davis), a respected Florida‑based civil engineering consulting firm renowned for its transportation design, operations, planning, and environmental services. The acquisition strengthens PRIME AE’s presence across the Southeast and enhances its ability to deliver comprehensive infrastructure solutions to public‑sector clients throughout Florida, expanding its regional footprint and service offerings.
For a full list of PSMJ’s transactions, please click here.