Turner Construction Company Acquires Dornan Engineering Group

Celnor Group Acquires John Turner Consulting

March 14, 2025

Environmental Services

UK-based testing, inspection, certification and compliance platform Celnor Group has acquired John Turner Consulting (JTC), a New Hampshire–based geotechnical, materials testing and environmental consulting firm. The deal — Celnor's first expansion outside the UK and Ireland and an add-on to the Inflexion‑backed platform — keeps founder John Turner in place and adds roughly 150 employees across eight New England offices.

Dussmann Group Acquires Lynskey Engineering

July 6, 2025

Engineering Services

German facility services group Dussmann Group has acquired Dublin-headquartered mechanical building services contractor Lynskey Engineering. The deal strengthens Dussmann Technical Solutions' mechanical engineering and maintenance capabilities in Ireland and complements its existing electrical services portfolio; Lynskey employs around 120 people and generates roughly €60m in annual revenue, and the purchase price was not disclosed.

QE Solar LLC Acquires Doman Energy Group

February 12, 2026

IT Services

QE Solar LLC announced the acquisition of Doman Energy Group, an engineering firm focused on utility-scale energy systems and electrical infrastructure. The deal is intended to significantly expand QE Solar’s in-house engineering capabilities and broaden integrated technical services across renewable energy project phases.

Karnell Group Acquires NE Engineering Ltd

July 12, 2024

Manufacturing

Karnell Group AB (publ) has acquired a 90.1% stake in NE Engineering Ltd, a Norwich-based precision engineering company specializing in CNC milling and turning. The acquisition expands Karnell's Niche Production business area, with NE's founders retaining 9.9% and an earnout tied to 2024–2025 performance; Karnell cited technical capability and cross-sell potential with its existing UK assets as drivers of the deal.

HMT LLC Acquires Dunham Engineering

June 2, 2020

Engineering Services

HMT LLC, a portfolio company of Tailwind Capital, has acquired Dunham Engineering, a structural and corrosion engineering firm specializing in storage tanks and towers. The add-on expands HMT's engineering and inspection capabilities and represents HMT's first add-on under Tailwind's ownership.

Langan Acquires ATR Engineering (Houston)

February 25, 2025

Engineering Services

Langan Engineering & Environmental Services acquired ATR Engineering, a Houston-based site/civil engineering firm led by Aaron Rendon. The deal expands Langan's Texas presence (its third acquisition in the state) and brings local land-development expertise in commercial, warehouse and multifamily residential projects to Langan's Houston office.