Top Professional Services Companies (10,000+)

Creative Security Company Inc is a San Jose–based, full-service security provider serving the Bay Area. The firm supplies uniformed security officers, mobile patrols, alarm and CCTV systems (installation and maintenance), alarm response, background screening, private investigations, and security consulting for commercial and construction sites. Founded by ex-law-enforcement leadership, Creative Security emphasizes field experience, teamwork, client-focused services, and employee advancement.

Igniwa is a global strategic talent partnership and recruitment firm specializing in scaling tech roles for startups, scale-ups, and multinational corporations. They leverage data, technology, and human insight to identify and place top-tier candidates in roles such as engineering, AI/ML, and data products, helping venture-backed companies grow efficiently with high-precision hiring solutions.

Newhouse Project Consulting (NPC) is a boutique San Francisco Bay Area consulting firm focused on organizational excellence and sustainable transformation. It provides change-management strategy and adoption support, staff augmentation for temporary or long-term needs, AI advisory services, and Salesforce-partner expertise spanning requirements analysis through post-implementation operations. NPC also promotes mental-health literacy and ESG initiatives, helping organizations achieve lasting operational and...

KatzAbosch is a premier Maryland-based Certified Public Accounting (CPA) and consulting firm serving the mid-Atlantic region. The firm provides top-tier audit, tax, accounting, and management consulting services to help clients optimize taxes, enhance financial reporting, and maintain compliance. Committed to helping clients create, grow, and protect their success, they have extensive experience serving government contractors, construction companies, and non-profit organizations.

Progressive Maryland is a statewide nonprofit advocacy organization promoting racial, social, economic, and environmental justice. It builds power for working families by mounting issue campaigns and organizing people to take action on issues that will improve their lives.

EquiMatch provides AI-powered proprietary M&A origination services for private equity firms, corporate acquirers, and M&A advisors. The company leverages AI-driven research and personalized outreach to identify, score, and engage off-market acquisition targets. By offering end-to-end sourcing—from target identification to vetted introductions—EquiMatch simplifies the merger and acquisition process and eliminates the need for large in-house analyst teams.

Spa Soul is a premier spa management, brand delivery, and consulting firm based in Istanbul, Turkey. Established in 2009, the company specializes in delivering innovative business solutions and exceptional guest experiences for spas worldwide. They offer expertise in conceptualization, implementation, and operational management for various spa types, while championing the integration of luxury with sustainable and eco-friendly practices.

Barrena Branding & Marketing is a full-service marketing and branding agency helping companies build strong brands and scalable marketing strategies. It provides strategic guidance and execution across brand, content, and demand generation, acting as an extension of clients’ teams. Services include brand strategy, positioning, website design and development, content creation, email marketing, paid media, SEO, and lead generation, primarily for...

Hudson Information Technology and Manpower Services, part of The Hudson Group, is a global workforce solutions and software services partner founded in 2019. The company combines HudsonIT Consultancy Ltd, which provides enterprise software and technology consulting, with Hudson Manpower Inc, which specializes in comprehensive technical recruitment across various sectors, including Oil & Gas, IT, and Hospitality.

Access Accelerator is a Bahamian nonprofit organization focused on helping micro, small, and medium-sized enterprises (MSMEs) start, grow, and succeed. It provides business-development services, mentorship, advisory support, educational resources, and access to grant, loan, and equity funding. Its programmes serve entrepreneurs across The Bahamas and use strategic partnerships to strengthen the country’s small-business ecosystem and economic impact.

Outsourcey is a premier remote staffing agency that connects businesses with exceptional offshore talent, offering flexible staffing solutions without long-term contracts to facilitate significant cost savings.

Navinyaa Solutions is a multidisciplinary business-services provider offering engineering design, IT solutions, finance and accounting, business-process outsourcing, and consulting. Its services span software development, cloud services, data analytics, customer support, HR and finance operations, and guidance on processes, projects, and product risks. The company combines technology and corporate support to streamline global operations, reduce overhead, and accelerate clients’ time-to-market.

talentC is a Ukrainian full-service recruitment agency and part of the Genesis ecosystem. Since 2014, the company has specialized in recruiting technical and non-technical specialists across all levels—from trainee to C-level—for both tech and non-tech businesses. They focus on helping companies hire top talent and scale their operations globally, providing comprehensive recruitment and employer branding services to support business growth.

HeyDelegate is a Kenya-based virtual staffing company that connects global businesses with top-tier, experienced remote professionals across Africa. Specializing in managed virtual assistant services, the company provides support in administrative tasks, bookkeeping, and social media management via a monthly subscription model, enabling businesses to build high-performing remote teams and focus on growth.

FinanceWithin is a professional services firm providing strategic CFO, FP&A, and accounting services to founder-led companies, specifically within the consumer, DTC, retail, and CPG sectors. The firm helps businesses drive performance and enhance enterprise value through financial modeling, cash flow management, and investor-ready reporting, supporting companies through various stages from startup to M&A.

Sirius Support is a customer-support outsourcing company that helps organizations build or modernize scalable support operations. It combines AI-optimized human agents with remote customer care, technical support, custom solutions, field services, and practical AI optimization. Its mission is to deliver empathetic, human-centric customer experiences at scale, using outcome-based, per-ticket pricing and flexible teams that complement automation while improving efficiency for...

The U.S. Soccer Federation is a non-profit organization and the official governing body of soccer in the United States. It is dedicated to promoting the sport at all levels, from grassroots programs to professional national teams. The Federation oversees soccer development, certification, and competition management, aiming to ignite a national passion for the game and serve as a force for...

University Instructors LLC is a Public Consulting Group company specializing in K-12 staffing, tutoring, and professional development services. With over 30 years of experience, they partner with schools to provide high-quality instructional support, including classroom staffing, academic intervention, and out-of-school programs, helping districts fill vacancies and enhance student achievement through research-based strategies and the development of local educator pipelines.

Envision Education's mission is to transform the lives of students - especially those who will be the first in their family to attend college - by preparing them for success in college, career, and life. This mission is grounded in the urgency to create opportunities for first-generation college-going students, so that they have access to an education that will fundamentally...

Economy Exterminators is a family-owned pest control company providing high-quality residential and commercial services across North Carolina and South Carolina since 1976. They specialize in professional pest elimination, termite protection, and moisture-related solutions. As a QualityPro accredited organization, they are committed to delivering innovative, sustainable, and eco-friendly pest management solutions for homeowners and businesses throughout the region.