Top Professional Services Companies (10,000+)

ISS International SpA, founded in 2004 in Rome, Italy, is a leading engineering service provider specializing in Integrated Service Solutions for the Energy and Oil & Gas sectors. Offering a comprehensive range of services, their expertise spans detailed design, procurement, construction assistance, commissioning, training, maintenance engineering, pre-assembled skids, and on-site assistance, supporting international clients with technical and managerial expertise.

CYPFER is a global leader in cybersecurity, specializing in cyber-attack incident response and ransomware post-breach recovery. The firm provides a comprehensive suite of services, including ransomware remediation, digital forensics, and cyber risk management, aimed at delivering 'Cyber Certainty™.' Their in-house team of experts supports organizations worldwide 24/7, helping them recover from cyber-extortion incidents and strengthen their overall digital resilience.

Bierman Autism Centers is a leading provider of center-based ABA, speech, and occupational therapies for children diagnosed with autism, offering play-based, personalized approaches to build skills in communication, independence, and self-advocacy.

Rincon Family Services is a Chicago-based 501(c)(3) nonprofit founded in 1972 that delivers culturally competent behavioral-health and substance-use treatment, counseling, case management, prevention, youth and family programs. Serving primarily underserved West Side and broader Chicagoland communities, Rincon operates community centers, school-based services and after-school programs focused on advocacy, education, empowerment and holistic care for individuals and families.

Oak Tree Support Services' mission is to eradicate homelessness by meeting people where they are and helping them get to where they want to be through county and federal programs including housing, employment and independence supports.

Goodwill Industries of Michiana, Inc. is a leading private, not-for-profit corporation that provides retail services to fund free community, career, and education programs across Northern Indiana. Its mission is to provide jobs, training, and placement services for people with barriers to employment by expanding their opportunities and occupational capabilities in response to local needs, offering critical community-based services.

Lisa's Law is a London-based Legal 500 law firm specializing in immigration and property law for individuals and businesses. They provide a comprehensive range of legal expertise, including commercial and residential conveyancing, litigation, family law, and wills and probate, aiming to serve as a one-stop shop for their clients.

Union County Government serves nearly 240,000 residents of Union County, North Carolina. The organization provides a wide range of essential public services, including law enforcement, water and wastewater utilities, planning, zoning, and tax administration. Its mission is to ensure the community thrives by providing professional public service and the effective administration of county resources.

Founded in 2005, Kinessor is a neutral telecommunications and IT consulting firm based in Quebec, Canada. The company specializes in providing personalized telecom solutions and specialized IT resource augmentation to improve organizational productivity. Their comprehensive range of services includes strategic advisory, application development, network infrastructure, telephony, and cybersecurity, supporting clients throughout their technological evolution using an agile ICT approach.

LifeLong Medical Care is a multi-site, Federally Qualified Health Center (FQHC) providing comprehensive, high-quality medical, dental, behavioral health, and wellness services to underserved populations of all ages and incomes. With over 15 primary care health centers, they deliver integrated services, including psychosocial support and chronic disease management, to a wonderfully diverse patient community.

Seva Ltd is a Certified Public Accounting firm serving clients virtually worldwide. It provides U.S. tax planning and preparation for expatriates and immigrants, ITIN support, business accounting, tax, payroll, compliance, cross-border advisory, financial automation, crypto tax, assurance, and related regulatory guidance. Its mission is to help individuals and businesses navigate complex financial and compliance issues through clear, personalized, and proactive...

Adsposure is a specialized provider of transit advertising solutions across nine U.S. markets, focusing on maximizing exposure for local businesses by offering bus advertising and other Out-of-Home advertising options. They help clients take their message to the public using transportation media.

Potomac Case Management Services is a non-profit human service agency providing case management and mental health services for over twenty years in Maryland. They support adults, children, and families in achieving mental health recovery through personalized care and connections to community resources, helping clients maintain independence and improve their quality of life.

We Are Rosie is a flexible marketing and creative talent company that connects brands with vetted, experienced freelance and fractional marketers. It assembles tailored teams for campaigns, projects, embedded in-house studios, and short- or long-term staffing needs. Founded to create a more human-centric, inclusive way of working, the company helps organizations solve brand challenges quickly without traditional agency retainers, unnecessary...

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.

The EMAC Group is a full-service recruiting, training, and consulting firm specializing in the mortgage lending industry. With over 30 years of experience, they help mortgage companies identify, engage, and recruit high-performing leaders and revenue-producers to drive business growth. They provide specialized recruiting solutions, training, and consulting to both hiring managers and job seekers within the mortgage sector.

Arsan International Consulting Group provides HR consulting, organizational development, leadership solutions, and outplacement services, with international recruiting experience in diverse manufacturing industries.

hrEdge is a Florida-based human resources consulting firm that serves as a dedicated HR partner and teammate for organizations. It provides flexible, people-focused HR solutions customized to each client’s needs, culture, and growth stage. The company supports organizations through fractional ongoing HR assistance, interim HR leadership, project-based expertise, and HR assessments, helping them obtain experienced support without the cost or...

Metrocare Services is the largest provider of mental health, developmental disability, and permanent supported housing services in Dallas County. They offer a broad array of behavioral health care, primary care, and supportive social services for veterans, children, teens, and adults. By providing comprehensive clinical care and research through the Altshuler Center, Metrocare helps thousands of individuals in North Texas lead...

The Leaders Rheum is a management services organization and network dedicated to elevating independent rheumatology practices. By providing centralized services, cutting-edge technology, and data insights, the company helps providers enhance their financial viability and clinical excellence. The organization's mission is to enable rheumatologists to maintain their professional autonomy and independence while gaining the collective strength and resources of a larger...