Top HR tech companies

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

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

1
Adecco· Zurich, Zurich, Switzerland
- 205.8k employees
- Founded 1996
2
ADP· Roseland, New Jersey, United States
- Post-IPO debt
- 96.6k employees
- Founded 1949
3
ManpowerGroup· Milwaukee, Wisconsin, United States
- 70.5k employees
- Founded 1948
4
Randstad· Diemen, North Holland, Netherlands
- 59.6k employees
- Founded 1960
5
EU Careers by EPSO· Brussels, Brussels Region, Belgium
- 56.5k employees
- Founded 2002
6
Fresher· Bengaluru East, Karnataka, India
- 39.4k employees
- Founded 2019
7
Confidential Careers· Gurugram, Haryana, India
- 37.7k employees
- Founded 2024
8
Desempregado· Ilha de Moçambique, Nampula Province, Mozambique
- 33.9k employees
- Founded 2021
9
Quess Corp Limited· Bengaluru South, Karnataka, India
- Series unknown
- 32.7k employees
- Founded 2007
10
Hays· London, England, United Kingdom
- 31.6k employees
- Founded 2000
11
Manpower· Milwaukee, Wisconsin, United States
- 27.9k employees
- Founded 1948
12
Robert Half· Menlo Park, California, United States
- 27.8k employees
- Founded 1948
13
Aya Healthcare· San Diego, California, United States
- 23.8k employees
- Founded 2001
14
LHH· Jacksonville, Florida, United States
- 23.6k employees
- Founded 1992
15
The Adecco Group· Zurich, Zurich, Switzerland
- 22.3k employees
- Founded 1996
16
Na volné noze· Ostrava, Moravia-Silesia, Czechia
- 21.5k employees
- Founded 2005
17
Aerotek· Hanover, Maryland, United States
- 20.4k employees
- Founded 1983
18
Kelly· Troy, Michigan, United States
- 20.1k employees
- Founded 1946
19
عمل حر· Rabat, Rabat-Salé-Kénitra, Morocco
- 19.7k employees
- Founded 2018
20
Desempregada· São Paulo, São Paulo, Brazil
- 19.2k employees
- Founded 2008
21
Paychex· Rochester, New York, United States
- Post-IPO debt
- 18.6k employees
- Founded 1971
22
Work from Home / None Company· New York, New York, United States
- Post-IPO debt
- 18.2k employees
- Founded 2019
23
Gi Group· Milan, Lombardy, Italy
- Pre-seed
- 17.1k employees
- Founded 1998
24
وظائف شاغرة في السعودية· Saudi Arabia
- 16.6k employees
- Founded 2019
25
Maxim Healthcare Staffing· Hanover, Maryland, United States
- 16.5k employees
- Founded 1988

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 26,026 HR techcompanies in our 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 techengineers in San Francisco hiring senior ML” or “designers at HR techcompanies 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: Thu, 07 May 2026 07:28:22 GMT

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