Top Pennsylvania Professional Services Companies (505)

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...

ZS is a management consulting and technology firm that partners with companies to improve life and how we live it. We transform ideas into impact by bringing together data, science, technology and human ingenuity to deliver better outcomes for all. Founded in 1983, ZS has more than 15,000+ employees in over 40 offices worldwide.

H.W. Lochner is a distinguished engineering, planning, and consulting firm specializing in infrastructure development, providing services for aviation, surface transportation, and water clients.

Chatham University is a private university located in Pittsburgh, Pennsylvania, known for its commitment to sustainability, the liberal arts, and professional programs. Founded in 1869, the institution offers a wide range of undergraduate and graduate degrees across various disciplines. The university emphasizes experiential learning, community engagement, and preparing students for successful careers, fostering an inclusive environment that supports academic excellence...

S.R. Snodgrass, P.C. is an independent accounting and consulting firm founded in 1946. They provide personalized tax, assurance, technology, risk analysis, and financial advisory services. The firm is highly specialized in serving community banks and nonprofit organizations, emphasizing a personalized approach to customer service and stability.

Constellation Health Services is a family-owned, privately held post-acute healthcare provider. The company delivers community-based home health, hospice, palliative care, private duty, and school- and in-home ABA/therapy services across multiple states. They are committed to providing a high-quality patient experience and clinical excellence through a comprehensive continuum of care centered on the community setting.

The Loomis Company, headquartered in Berks County, PA, is one of the top 100 diversified insurance brokers in the United States. They provide a comprehensive suite of insurance solutions, including property and casualty, marine and aviation, employee benefits, and personal insurance. Focused on customer care and leveraging technological advancements, the company serves clients both domestically and internationally to protect their...

Goodwill Keystone Area is a Pennsylvania-based nonprofit organization that operates thrift stores and provides business services. Its core mission is to empower individuals with employment barriers through skill development, job placement, and career growth programs.

Crossroads Hospice & Palliative Care is a national leader in hospice and palliative care, dedicated to helping patients and families find comfort for chronic and life-limiting illnesses. The organization focuses on improving the quality of life through compassionate, innovative end-of-life services and attentive hands-on care, supporting patients' physical, emotional, and spiritual needs in home and facility settings across multiple states.

Questeq is a Pittsburgh-area (Coraopolis, PA) provider of educational technology management and support solutions for K-12 schools. Founded by an educator in 1983, the company delivers managed technology services, day-to-day technology operations, and vision-oriented technology planning so schools can realize technology's potential in the classroom. Its mission is to deliver educational technology management that culturally improves the education environment, allowing...

Founded in 1991, AI Engineers provides comprehensive Bridge, Transportation, Construction Support, Water/Wastewater, Site/Civil, Building Systems, Design-Build, Survey/Mapping, and Technology services to federal, state, municipal, and private clients. The firm is dedicated to delivering innovative engineering solutions that address society’s critical infrastructure needs and improve the quality of life for the communities they serve.

LexisNexis Legal & Professional is a leading global provider of legal, regulatory and business information and analytics that help customers increase productivity, improve decision-making and outcomes, and advance the rule of law around the world. We help lawyers win cases, manage their work more efficiently, serve their clients better and grow their practices. We assist corporations in better understanding their markets,...

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...

HHS is a private, family-owned company that provides outsourced facilities management and support services. They specialize in housekeeping, custodial, and food and dining services, serving a diverse range of clients across the healthcare, aviation, education, government, hospitality, and senior living sectors throughout the United States.

MDK Legal is a law firm providing client-centric legal and professional services, specializing in the mortgage servicing and vacation ownership industries. A prominent player in the legal services sector, the firm serves an extensive client base across multiple states, including Ohio, California, and Florida, emphasizing collaboration, growth, and innovation to deliver high-quality legal support.

Dynamic Engineering Consultants, PC is a nationally recognized multidisciplinary consulting firm serving clients throughout the United States. Its services include engineering, surveying, environmental and geotechnical work, planning, landscape architecture, traffic engineering, permitting, and related consulting. The firm supports commercial, residential, industrial, institutional, and public-sector projects through a growing family of companies and multidisciplinary teams across a broad geographic footprint.

SBM was founded in 1982 in Sacramento, California by Charles Somers (CEO) and Don Tracy (EVP), providing service to the entire Northern California region. With the addition of Ron Alvarado as a partner in 1993, SBM embarked on its national expansion outside of California. Today, SBM employs more than 9,000 individuals servicing more than 350 million square feet throughout North...

Cescaphe Event Group is a premier wedding brand and event planning company in Philadelphia, specializing in a boutique collection of unique venues. Renowned for culinary expertise and professionalism, they focus on executing once-in-a-lifetime, distinctive events with genuine care and passion. Their mission is to treat every guest like family while exceeding expectations through meticulous attention to detail and high-quality service.

Lerch Bates is an international consulting services company specializing in the design and management of building systems. It is a global technical consultancy for those designing, modernizing, investigating, or managing buildings.

Orthopedic Associates of Lancaster (OAL) is a physician-owned multispecialty orthopedic practice that has served Central Pennsylvania since 1972. With five locations and its own outpatient surgical centers, OAL provides expert orthopedic care, including joint replacements and sports medicine, delivered with compassion and innovation to help patients live stronger, healthier lives.