Top Professional Services Companies (10,000+)
Spectrum Health Systems, Inc. is a private, non-profit provider of evidence-based treatment for substance use and mental health disorders, offering the largest continuum of addiction treatment in New England.
Stack and Co is a Dublin-based boutique IT recruitment firm focused on software, cloud, DevOps, and enterprise technology roles. It helps junior, mid-level, and senior engineers find suitable positions, while supporting employers—including startups, SMEs, and multinationals—with proactive sourcing and screening for permanent and contract technical hires. Its consultants emphasize informed, respectful communication throughout the hiring process in Ireland.
Herrera Environmental Consultants is an employee-owned science, engineering, planning, and design consulting firm. It develops holistic, sustainable, and nature-based infrastructure solutions that address environmental and infrastructure challenges. The company serves cities, counties, state and federal agencies, Tribes, nonprofits, and private clients across the western United States and western Canada, combining interdisciplinary expertise to create scientifically rigorous, cost-effective outcomes that benefit...
Kittleman & Associates is an executive search firm dedicated exclusively to nonprofit leadership. It helps nonprofit organizations identify and recruit CEOs and executive directors, combining customized search processes, analytics, sector expertise, and hands-on guidance from consultants with nonprofit leadership or board experience. The firm also advises clients on leadership transitions and succession, supporting organizations across a broad range of nonprofit...
The Consortium, Inc. is a technology consulting and professional services company headquartered in the Washington, DC metro area, specializing in providing high-caliber technology professionals for specific project needs. It also operates as a technology staffing company.
Union is a People Operations and Recruiting firm specializing in fractional HR services for high-retention startups. They provide white-glove People Ops and recruiting expertise to help companies scale effectively, implementing a people-first talent playbook and managing performance policies. Their team comprises former Heads of Talent and People Ops specialists who act as an extension of their clients' teams.
Top Talentia is a professional Human Resources firm dedicated to rehumanizing the HR field. Their mission is to provide a high standard of excellence and a close, personal approach to both candidates and clients, ensuring a more human-centric experience within the recruitment and talent management process.
Clay Consulting LLC serves the federal healthcare ecosystem, including the Departments of Defense, Labor, and Justice, as well as state-level agencies. The company provides a vast network of medical providers to perform Medical Disability Exams, Separation Health Assessments, and Reserve Health Readiness Program evaluations for the nation's veterans, focusing on delivering high-quality and objective evaluations with professionalism and respect.
Global Online Partners™ (Globpar) is a provider of online outsourcing services for SAP® Partners, offering innovative and flexible delivery as an alternative to traditional on-site consulting. Acting as a private-label delivery backbone for VARs and service providers, it provides a comprehensive suite of implementation, operation, and enablement services delivered under the partner's own brand.
OnFrontiers builds knowledge networks for distributed businesses seeking to become more agile and competitive. Our product is a SaaS platform customers use to manage their network of go-to experts and also to access new expertise via our expert marketplace.
Admind is a global branding and communication agency that empowers B2B brands to transform, grow, and lead in a fast-changing world by blending strategic thinking, creative excellence, and technological innovation.
The Roman Catholic Diocese of Brooklyn is a diocese of the Catholic Church in the state of New York, headquartered in Brooklyn and encompassing the New York City boroughs of Brooklyn and Queens. Founded in 1853, it serves the people of these boroughs.
Jolly Commerce is a Shopify-focused eCommerce agency that designs, builds, migrates and continuously optimizes online stores to increase conversion and revenue. They offer a profit optimization program encompassing CRO, A/B testing, and landing pages, as well as full Shopify builds and migrations. The agency serves brands from artisan shops to high-revenue retailers, emphasizing measurable uplifts in conversion rates and revenue.
Cisive is a global provider of compliance-driven human capital and risk management solutions. The company delivers employee onboarding and pre-employment background screening, employment intelligence, and industry-specific data services to large enterprises, particularly in regulated and risk-sensitive sectors. Its offerings support clients in healthcare, financial services, transportation, telecommunications, utilities, and home services, with dedicated in-country account management focused on accuracy, compliance,...
Boxer Property Management Corporation is a privately owned commercial real estate company that manages, leases, renovates, and administers commercial properties, focusing on creating value and tenant satisfaction. They manage over 15 million square feet of commercial buildings.
Cypress Hills Local Development Corporation (CHLDC) is a community-driven non-profit organization dedicated to building a strong, equitable East New York. Its mission is to help youth and adults achieve educational and economic success, secure and preserve affordable housing, and develop leadership skills to transform their lives and community, while actively promoting policies that advance racial equity.
Four Principles is a leading management consulting firm specializing in Lean management implementation and the Japanese philosophy of Kaizen, or continuous improvement. Operating primarily in the MENAT region and globally, the company helps clients across various industries, including retail, life sciences, and the public sector, to become more efficient and effective competitors by delivering sustainable Lean solutions that provide a...
Crowdfunder is a leading UK-based crowdfunding platform dedicated to spreading positivity and addressing societal challenges. It provides a collaborative space for individuals, charities, businesses, and community projects to raise funds through donations and rewards. With a 'more than profit' philosophy, the company focuses on nurturing grassroots innovation and empowering communities, having successfully raised over £400 million to support impactful initiatives...
STAFIDE is a Netherlands-based niche technology talent consulting company operating across Europe. It helps organizations identify, recruit, and deploy technology professionals in areas including cybersecurity, cloud engineering, software development, data analytics, ERP, infrastructure, and digital transformation. Its services include recruitment, workforce engagement, secondment, onboarding support, workforce deployment, and workforce analytics that support technology hiring and expansion.
Cameron Health is a nonprofit, community-focused health system in Angola, Indiana that operates a modern hospital and affiliated clinics offering a range of medical specialties and community programs. The organization emphasizes accessible, high-quality care, workforce support (employees, volunteers, students), and financial transparency, having rebranded from Cameron Memorial Community Hospital to reflect its expanded integrated health services and community mission.
