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Top HR tech companies

Software and services for hiring, payroll, performance, and workforce planning.

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Ranked by current headcount across the largest HR tech companies. Refreshed daily.

  1. 1
    Adecco· Zurich, Zurich, Switzerland

    Perfect placements. Speedy staffing. Tenacious testing. Who’s Adecco, we hear you ask? Only the top provider of first-class HR solutions. Our consultants work with some of the best, and most exciting, companies all over the world. We equip our clients with priceless industry insight and put everything we’ve got into training and mentoring our candidates. We’re here to match talented people with the job opportunities and employers they’re looking for. On any given day we connect over 700,000 people with fulfilling opportunities that make the most of their skills now and enable them to develop new expertise for the future.

    • 205.8k employees
    • Founded 1996
  2. 2
    ADP· Roseland, New Jersey, United States

    Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential. HR, Talent, Time Management, Benefits and Payroll. Informed by data and designed for people.

    • Post-IPO debt
    • 102k employees
    • Founded 1949
  3. 3
    ManpowerGroup· Milwaukee, Wisconsin, United States

    ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis and Talent Solutions – creates substantially more value for candidates and clients across more than 80 countries and territories and has done so for 75 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent. See how ManpowerGroup is powering the future of work: www.manpowergroup.com

    • 73.1k employees
    • Founded 1948
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  5. 4
    Randstad· Diemen, North Holland, Netherlands

    Randstad is the world’s largest talent company and a partner of choice to clients. We are committed to providing equitable opportunities to people from all backgrounds and help them remain relevant in the rapidly changing world of work. We have a deep understanding of the labor market and help our clients to create the high-quality, diverse and agile workforces they need to succeed. Our 46,000 employees around the world make a positive impact on society by helping people to realize their true potential throughout their working life. Randstad was founded in 1960 and is headquartered in Diemen, the Netherlands. In 2022, in our 39 markets, we helped more than 2 million people find a job that feels good and advised over 230,000 clients on their talent needs. We generated revenue of €27.6 billion. Randstad N.V. is listed on the Euronext Amsterdam. For more information, see www.randstad.com

    • 61.2k employees
    • Founded 1960
  6. 5
    EU Careers by EPSO· Brussels, Brussels Region, Belgium

    Welcome to the European Personnel Selection Office (EPSO). Follow us to find new job and traineeships opportunities with the EU institutions and agencies!EPSO’s core mission is to meet the EU institutions’ recruitment needs by selecting talented candidates through generalist and specialist competitions. In carrying out this goal, EPSO acts as a trusted matchmaker between the EU institutions and high performing professionals and graduates. It thus contributes to the building of the current and future European civil service.As an interinstitutional office, EPSO is responsible for selecting staff mainly for the European Parliament, the Council of the European Union, the European Commission, the Court of Justice of the European Union, the European Court of Auditors, the European Economic and Social Committee, the Committee of the Regions, the European External Action Service, the European Ombudsman and the European Data Protection Supervisor. Each one of these institutions recruits staff from a pool of successful candidates provided by EPSO.

    • 58.3k employees
    • Founded 2002

Find engineers and designers at top HR tech companies

The HR tech industry runs on the people who build it. The list above ranks the largest HR tech companies by current headcount, drawn from public LinkedIn and Crunchbase records. Across the 26,709 HR tech companies in Refolk’s index, you’ll find software engineers, ML researchers, designers, founders, and recruiters worth talking to - whether you’re hiring, investing, or doing market research.

Each company on the list is a hub of talent. The biggest HR tech companies tend to attract specialised engineers, while younger ones run on small founding teams and hire generalists. Looking at headcount, last funding round, and HQ location side by side gives you a quick read on where the talent density is highest.

Refolk turns this list into a search. Ask for HR tech engineers in San Francisco hiring senior ML” or “designers at HR tech companies who shipped a product in 2025” and Refolk returns a fresh ranked shortlist with the sources that earned each person a spot.

How this list is built

Refolk pulled the largest companies in HR tech from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 25 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 15:05:02 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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