Top Professional Services Companies in Pittsburgh, PA (108)
Build what’s next — with tech that matters PwC provides professional services across Audit and Assurance, Advisory and Tax — powered by a global network of over 370,000 people in 149 countries. You may know us for our business expertise, but technology is core to how we help clients move faster, build trust and deliver meaningful outcomes. As a technologist, you’ll work...
PwC's Top Stability & Growth Strengths
Resilient & Sustainable Growth: Revenue has increased year over year to a new high, with all three major service lines posting gains despite a slower pace. Growth remains uneven by region, but the overall trajectory is upward over the last several fiscal years.
Future-Ready Strategy: Multi‑billion‑dollar investments in technology—especially nearly $1.5B in AI—along with acquisitions and scaling managed services indicate a deliberate pivot to future growth levers. Leadership attention to next‑generation audit and AI‑enabled capabilities underscores preparation for emerging demand.
Strong Market Position & Advantage: The organization is characterized as a leading global professional‑services network with broad scale across assurance, advisory, and tax and repeated external recognitions in select consulting categories. Reach across major multinational clients supports durable competitive positioning.
Gunton Corporation is a family-owned and professionally managed business founded in 1932 in Cleveland, Ohio. As the largest independent distributor of Pella Windows & Doors in the country, the company serves homeowners and businesses by providing high-quality window and door solutions. Its mission is to provide the ultimate window and door solutions to its customers while offering a world-class workplace...
KTA-Tator, Inc. (KTA) is a 100% employee-owned materials engineering firm, internationally recognized as a leading expert in corrosion protection and asset integrity, providing professional coatings inspection, materials testing, and consulting services.
The Children's Home of Pittsburgh is an independent, nonprofit organization established in 1893, dedicated to promoting the health and well-being of infants and children by strengthening families through services like adoption, pediatric specialty care, and counseling.
Accelion is a technology company and talent platform that partners with high-growth startups to help them scale. Its team supports companies across artificial intelligence, healthcare, recruiting, consumer, fintech, and other sectors. Accelion combines talent-focused recruiting and operational support with a growth-oriented approach, helping emerging businesses build teams, improve execution, and expand. The company describes its mission as supporting ambitious, high-growth...
Founded in 1854, Glade Run Lutheran Services is a non-profit organization based in Zelienople, Pennsylvania, dedicated to empowering individuals through education, mental health services, developmental disability support, and community-based programs. Serving thousands of children, adults, and families across Western Pennsylvania, the agency provides innovative, compassionate care in school, home, and community settings, continuing a long tradition of linking faith and...
West Shore Home is a technology-enabled American home remodeling company founded in 2006 by B.J. Werzyn. The company specializes in high-quality bathroom, window, door, and flooring remodeling services. It utilizes full-time employee installation teams and proprietary digital measurement technology to simplify the remodeling process for homeowners, focusing on faster installations, clearer communication, and greater consistency across every project nationwide.
Founded in 1977, Cohen & Co is a top tax and accounting firm recognized by USA TODAY. The company provides top-tier tax, assurance, and advisory services to a diverse range of clients, including privately held companies, public and private funds, fund service providers within the asset management industry, and Fortune 1000 multinational enterprises across the United States and internationally.
Wade Trim is a century-old consulting engineering and planning firm that provides infrastructure solutions to municipal and private clients. Their core disciplines include civil engineering, planning, surveying, landscape architecture, and environmental science. They are known for a collaborative, practice-led approach to solving complex infrastructure challenges, with a focus on innovation, sustainability, and delivering customized solutions that maximize the value of...
McKinley Architecture and Engineering is a family-owned, multi-discipline professional services firm headquartered in Wheeling, West Virginia. It provides architecture, engineering, interior design, LEED and energy-efficient design, educational-facility planning, sports and recreation design, historic preservation, and construction contract administration. The firm designs educational, commercial, retail, warehouse, industrial, governmental, institutional, and recreational projects across West Virginia, Ohio, Pennsylvania, and surrounding states.
Erdman Anthony is an employee-owned multidisciplinary engineering and consulting firm dedicated to developing superior infrastructure solutions. Specializing in transportation, civil, and facilities engineering, the firm partners with public and private sector clients to provide innovative design and construction services. With over 70 years of experience, they focus on delivering quality results that enhance communities and improve the overall quality of...
Maxim Healthcare Services is a leading provider of home health, medical staffing, and wellness services across the nation. Its mission is to provide compassionate, home and community-based personalized care that honors the dignity of every patient and family. The company specializes in skilled nursing, personal care, and behavioral services, as well as military and federal services for veterans and service...
Bohlin Cywinski Jackson is a United States–based architectural practice founded in 1965. Operating through five studios across the country, the firm specializes in architecture, planning, and interior design. They are dedicated to designing places that inspire connection and wonder, with a portfolio ranging from modest houses to large academic, civic, cultural, commercial, and corporate projects, often emphasizing environmental sensitivity and...
RETTEW is a 100% employee-owned engineering consulting firm founded in 1969. They provide integrated, multidisciplinary solutions across various sectors, including transportation, water, utilities, renewable energy, and government infrastructure. With over 300 professionals and a national presence, the firm specializes in civil, geotechnical, and environmental engineering, focusing on creating innovative, safe, and efficient infrastructure to enhance communities and improve quality of...
Central Outreach Wellness Center is the largest LGBTQ+ medical clinic in Pennsylvania, with four offices and two offices in Ohio. Specializing in infectious diseases, the clinic has seen almost 90,000 patients since opening in 2015, leads the nation for curing the most Hep C patients, writes the most PrEP prescriptions in the country, and was voted as the Best Health...
Rycon Construction, Inc. is a 100% employee-owned company (ESOP) providing construction management, general contracting, design-build, and program management services nationwide. Specializing in new construction, renovations, and adaptive reuse, Rycon delivers a comprehensive range of high-quality services across sectors including healthcare, industrial, aviation, and commercial developments, supported by its own in-house architectural woodwork and specialty fabrication division.
Merakey is a leading developmental, behavioral health and education non-profit provider offering a breadth of integrated services to individuals and communities across the country. We leverage our size and expertise to develop innovative solutions and new models of care to meet the needs of individuals, their families, public and private healthcare funders and community partner organizations. We recognize that complex...
Merakey's Top Stability & Growth Strengths
Strong Market Position & Advantage: Independent sector recognition places the organization at the top of the nonprofit behavioral health provider set by scale, reinforcing a strong competitive position in its segment. The multi-state footprint and large operating scale (hundreds of locations/programs and tens of thousands served annually) further support this advantage.
Strong Revenue Growth: Reported top-line figures show movement from the low-to-mid $600M range to roughly the low-to-mid $700M range in the most recent consolidated annual reporting, indicating revenue growth. The scale of revenue is also consistent with a large, system-level operator rather than a single-site provider.
Market Expansion: Operations spanning 12 states and explicit entry into multiple new states, along with targeted acquisitions that add staff and individuals served, indicate continued geographic expansion. New clinic and service launches (e.g., urgent walk-in behavioral health access points and recovery housing) reinforce ongoing footprint growth.
Walker Consultants is a 100% employee-owned firm that provides planning, design, engineering, forensics, restoration, and building envelope services. Founded in 1965, the company serves a diverse range of clients, including municipalities, airports, healthcare facilities, and commercial developments. They are recognized as a leader in parking consulting, mobility planning, and structural restoration, focusing on delivering practical, cost-effective solutions to improve the...
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Forget what you think you know about professional services. We go beyond what’s expected and help others do the same. Grant Thornton is the U.S. member firm of Grant Thornton International Ltd, one of the world’s leading independent audit, tax and advisory firms. That means our network has more than 60,000 professionals in more than 135 countries who are ready to...
Grant Thornton LLP (US)'s Top Stability & Growth Strengths
Investor Backing & Capital Strength: A growth-oriented private equity investment from New Mountain Capital (with minority investments from CDPQ and OA Private Capital) in 2024 supplied an “investment war chest” to accelerate technology, AI-enabled services, talent acquisition, and strategic expansion. This capital base also underpins the multinational platform strategy and the announced CBIZ deal.
Market Expansion: Grant Thornton Advisors announced a $5.0 billion acquisition of CBIZ that, upon closing, would lift the U.S. platform past $5 billion in domestic revenue and expand brand reach. The Advisors arm also combined with Grant Thornton Ireland in 2025 and has since grown its European footprint, signaling inorganic and international momentum.
Strong Market Position & Advantage: The firm is consistently ranked among the top U.S. accounting and professional services firms, operates across numerous U.S. offices, and is a premier leader for the mid‑market and private‑equity segments. Its inclusion among the small set of firms subject to annual PCAOB inspection underscores national scale and capital‑markets relevance.
