Top Professional Services Companies in Washington, DC (393)
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.
Wipfli is a leading national advisory and accounting firm with nearly 100 years of serving ambitious middle-market organizations. We understand our clients' unique challenges and help them succeed on their terms through assurance, tax, advisory, outsourcing and technology services. With 2,900+ associates and global alliances, we combine national capabilities with local relationships. "Wipfli" is the brand name under which Wipfli LLP...
Wipfli's Top Stability & Growth Strengths
Strong Revenue Growth: Revenue has increased across FY24–FY26 with consecutive year-over-year gains, indicating steady top-line momentum. Company disclosures describe this as “purposeful” and oriented toward sustainable long-term growth alongside expansion in advisory and technology.
Investor Backing & Capital Strength: A strategic minority investment from New Mountain Capital was secured to accelerate growth, fund technology and talent, and support acquisitions. This signals enhanced capital resources to pursue the firm’s expansion agenda.
Product Line Growth: Capabilities have broadened through acquisitions and internal investment, adding areas such as cybersecurity, privacy, risk, digital transformation, and technology services (e.g., CompliancePoint and Harbour Results transactions). New leadership roles focused on growth, sales, and corporate development reinforce the expanding services mix.
Nisos is a human risk intelligence and managed investigations company that protects organizations and their people from human-driven and digital threats by operating as an extension of their security, intelligence, and legal teams. It leverages a team of expert analysts, specialized in open-source intelligence and adversary tradecraft, to provide actionable intelligence that addresses complex risks like executive threats, insider fraud,...
Nisos's Top Stability & Growth Strengths
Strong Revenue Growth: Company-reported metrics indicate monthly revenue doubled over 24 months and subscription revenue increased fourfold within 12 months. Net revenue retention reached 100% in 2023, signaling expansion of recurring relationships.
Investor Backing & Capital Strength: The business secured a $14M Series C in July 2025, bringing total disclosed funding to roughly $41.7M across five rounds. Independent industry tracking in 2025 also records the round, indicating continued access to institutional capital.
Product Line Growth: The 2025 launch of the Ascend human‑risk platform and subsequent modules reflect expansion beyond managed‑intelligence services into a broader platform offering. Current positioning spans executive protection, insider‑threat intelligence, employment‑fraud detection, third‑party intelligence, and digital exposure monitoring.
Paul Hastings is a premier global law firm serving leading investment banks, asset managers, corporations, financial institutions and Fortune 500 companies. The firm provides legal counsel across jurisdictions and practice areas, helping clients navigate challenging legal issues, complex transactions and critical disputes. Founded in 1951, it operates with more than 1,500 lawyers across the United States, Europe, Asia, Latin America...
Paul Hastings's Top Stability & Growth Strengths
Strong Revenue Growth: Revenue is reported as rising 20% year over year to about $2.68 billion, with record billed hours and expectations of further increases.
Profitability: Profit per equity partner is described at roughly $8.33 million, and profit per partner has reportedly tripled over the past two decades.
Market Expansion: The firm expanded offices and practices across key hubs (including London, Texas, Charlotte, Paris, Seoul, and New York), with London more than doubling headcount and revenue over five years. Aggressive lateral hiring and a global lawyer headcount exceeding 1,500 indicate broader platform growth.
Guardians of Honor, LLC is a minority-owned, economically disadvantaged woman-owned professional services firm and government contractor. The company specializes in delivering comprehensive support across multiple domains, including grants and events management, information technology, research and evaluation, logistics, conference planning, and STEM education programs. It provides strategic management and administrative solutions to federal agencies, ensuring high-quality program performance and operational excellence.
CMT Services, Inc. is an SBA-certified HUBZone and Woman-Owned Small Business that serves as a leading business services solution provider for government and commercial entities. The company specializes in delivering a broad range of high-quality solutions across Consulting, Management, and Technology, including IT consulting, cybersecurity, and program management, focusing on supporting the strategic business goals of its diverse customer base.
Quadrant Strategies is a global research and strategy consultancy that helps prominent companies make important decisions. It specializes in data-driven research involving hard-to-reach audiences, developing incisive strategies and executive-ready insights. The firm advises clients on brand, reputation, communications, product, business, and public-policy challenges, using senior-led engagements, rigorous quality controls, rapid execution, and AI-supported analysis.
Drug Information Association (DIA) is a leading global multidisciplinary life science membership association. It mobilizes life science professionals across all areas of expertise to engage with patients, peers, and thought leaders in a neutral environment. DIA focuses on the discovery, development, regulation, surveillance, and marketing of healthcare products to advance the life sciences community.
The Moran Company is an executive search firm that partners exclusively with nonprofit organizations, foundations, and associations to recruit top talent for key leadership and fundraising positions nationwide.
SimpsonScarborough is a specialized higher education marketing agency dedicated to helping colleges and universities enhance their branding and marketing impact. They provide a comprehensive range of professional services, including market research, analytics, creative strategy, and web development, all designed to improve institutional visibility and increase enrollment through innovative, data-driven strategies that help institutions outthink and outshine their competition.
Spectrum Retirement Communities, LLC is a management company that develops, owns, and operates senior living communities, offering independent living, assisted living, and memory care services.
Stand Together is a philanthropic community that partners with America's boldest changemakers to tackle the root causes of the country's biggest problems. By providing funding, a unique network, and a proven management playbook, they empower nonprofit leaders, educators, and activists to drive lasting solutions in areas like education, economic opportunity, and community development, ultimately helping people realize their full potential...
The Brookings Institution is a Washington, D.C.-based nonprofit public policy organization and think tank. For more than a century, it has conducted research and provided data-driven analysis and insights to inform critical decisions and improve public policy. Its work addresses major economic, social, governance, and international challenges, serving policymakers, institutions, and the broader public through independent research and evidence-based recommendations.
The ABA's mission is to serve equally our members, the legal profession and the public by defending liberty and delivering justice as the national representative of the legal profession.
The American Association for Justice (AAJ) promotes justice and fairness for injured persons, safeguards victims' rights, and strengthens the civil justice system through education and advocacy.
The Pan American Health Organization (PAHO) is the specialized international health agency for the Americas, dedicated to improving and protecting public health through technical cooperation, disease control, and health system strengthening.
The Infectious Diseases Society of America (IDSA) is a professional organization representing physicians, scientists, and other health care professionals specializing in infectious diseases. Founded in 1963, it is a global community dedicated to promoting health through excellence in infectious diseases research, education, prevention, and patient care to improve the lives of individuals, communities, and society.
The American Foreign Service Protective Association (AFSPA) is devoted to providing a comprehensive set of health insurance benefits and other services tailored to the unique needs of the Foreign Service and other Executive Branch employees.
DCG ONE (Direct Connect Group LLC) is a full-service creative experience agency that integrates strategy, design, print, and production to connect brands with audiences. They employ a holistic, audience-first approach to marketing, specializing in print production, web-based solutions, and integrated campaigns across digital and tangible touchpoints, including direct mail and fulfillment services.
H2 Performance Consulting (H2) Corporation, a Certified ISO 20000 company, is a high-growth professional services enterprise founded in 2005 by consulting industry veterans and performance and portfolio management practitioners. In the last four years, H2 has expanded its core competencies specializing in systems engineering, service management and cyber-security strategy and operations. H2 is headquartered in Pensacola, Florida with professional staff...
