Company lists · Data refreshed September 2026

Top 25 HR business process outsourcing companies based in Singapore

RevenueBase identified 232 HR business process outsourcing companies headquartered in Singapore as of September 2026 and tracks 9,872 professional contacts across them, including 1,470 with verified work emails. Singapore is the largest hub.

This list covers HR business process outsourcing companies headquartered in Singapore, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
232Companies
9,872Contacts tracked
1,470Verified emails
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The 25 largest HR business process outsourcing companies based in Singapore

Ranked by team size
Top 25 of 232 HR business process outsourcing companies based in Singapore, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to HR business process outsourcing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceSingaporeHQ checked Sep 28, 20265,001-10,0001,974 contacts →

Strong evidence

“Empowering Global Brands Through Custom BPO Solutions Gear Inc delivers business process outsourcing solutions designed to meet the unique challenges of leading enterprises.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceSingaporeHQ checked Sep 28, 2026501-1,000764 contacts →

Partial evidence

“Established in 2010 and headquartered in Singapore, BIPO is a leading global payroll and HR solutions provider, supporting businesses across 170+ countries.”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceSingaporeHQ checked Sep 28, 2026501-1,000577 contacts →

Indirect evidence

“As the leader in Corporate and Advisory Services in the Asia-Pacific region, BoardRoom serves as a trusted partner for Fortune 500 multinationals, public-listed firms, and…”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceSingaporeHQ checked Sep 28, 202651-200557 contacts →

Indirect evidence

“Founded in 1991, The GMP Group is one of Singapore's largest and most established staffing and human resource consultancies, dedicated to transforming careers and empowering…”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceSingaporeHQ checked Sep 28, 2026201-500335 contacts →

Partial evidence

“Rolling Arrays (RA) is Asia’s premier, award-winning HR Transformation company, headquartered in Singapore, with offices across six countries - Singapore, Malaysia, Hong Kong…”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceSingaporeHQ checked Sep 28, 202610001+293 contacts →

Indirect evidence

“Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceSingaporeHQ checked Sep 28, 2026501-1,000235 contacts →

Partial evidence

“P-Serv | Now PERSOL Outsourcing We’ve moved.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceSingaporeHQ checked Sep 28, 2026201-500177 contacts →

Indirect evidence

“At PayAsia our core service offering and expertise is Payroll and Human BPO, Cloud SaaS technology for 150+ countries and 2500 client entities.* We realise that managing a…”

Source: RevenueBase Database · checked Sep 28, 2026
9Strong evidenceSingaporeHQ checked Sep 28, 202651-200175 contacts →

Strong evidence

“Kingfisher HR Solutions Group is a global provider of Executive Search, Recruitment Process Outsourcing (RPO), Staffing Services, Career Mobility & Transition and Career Education.”

Source: RevenueBase Database · checked Sep 28, 2026
10Strong evidenceSingaporeHQ checked Sep 28, 202611-50142 contacts →

Strong evidence

“An award-winning company founded in 2004, ScienTec has transformed organizations across Asia Pacific with our 4 principle services: Staffing, Specialist Search, Outsourcing and HR…”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceSingaporeHQ checked Sep 28, 2026501-1,000133 contacts →

Indirect evidence

“Elitez Group is a regional human resource company founded in Singapore in 2010.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceSingaporeHQ checked Sep 28, 2026201-500117 contacts →

Partial evidence

“People Profilers is a leading recruitment and HR solutions provider in Asia, supporting businesses with end-to-end workforce solutions across Singapore, Malaysia, Thailand…”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceSingaporeHQ checked Sep 28, 2026501-1,000111 contacts →

Partial evidence

“HRnetGroup is one of Asia’s leading recruitment and HR solutions firm.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceSingaporeHQ checked Sep 28, 20261,001-5,00099 contacts →

Indirect evidence

“At Quess Singapore, we are a leading business services provider, transforming enterprises with digital-first staffing solutions and innovative strategies.”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceSingaporeHQ checked Sep 28, 2026501-1,00096 contacts →

Partial evidence

“In a rapidly changing business environment driven by new technologies, business leaders can no longer afford to ignore outsourcing.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSingaporeHQ checked Sep 28, 2026201-50094 contacts →

Indirect evidence

“Kuubiik is a global, client-focused consultancy with operations spanning more than 150 countries.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceSingaporeHQ checked Sep 28, 202651-20092 contacts →

Indirect evidence

“NuVista Technologies Pte Ltd provides comprehensive Solutions and Consulting Services for Human Resource, Procurement & for ERP-Cloud-based SaaS Business Suite with Integrated…”

Source: RevenueBase Database · checked Sep 28, 2026
18Partial evidenceSingaporeHQ checked Sep 28, 202651-20086 contacts →

Partial evidence

“Goldtech Resources provides distinctive outsourcing solutions and services to corporations that outsource their non-core and core activities such as Talent Management.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceBukit Merah, SingaporeHQ checked Sep 28, 202651-20085 contacts →

Indirect evidence

“Ace Management Services provides a one – stop solution to a comprehensive Human Resource & Business Management needs to our clients.”

Source: RevenueBase Database · checked Sep 28, 2026
20Strong evidenceSingaporeHQ checked Sep 28, 2026501-1,00076 contacts →

Strong evidence

“AccountStaff - a division of RSM Singapore is a leading Business Process Outsourcing (BPO) partner with a presence in Singapore, China and Malaysia.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceSingaporeHQ checked Sep 28, 202651-20068 contacts →

Indirect evidence

“AI-Powered HRIS + Multi-Country Payroll for Asia.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceSingaporeHQ checked Sep 28, 202651-20056 contacts →

Indirect evidence

“Industry leader of more than 20 years experience in providing Payroll and Human Resource products and services.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceSingaporeHQ checked Sep 28, 202651-20052 contacts →

Indirect evidence

“Green BPO - 100% Remote Role - lowest attrition and cost - expertise in Finance Order 2 Cash roles, Customer Service, Analyst and Tech Roles across India & Asia - bilingual…”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceSingaporeHQ checked Sep 28, 202651-20050 contacts →

Indirect evidence

“We are LEDGEN.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceSingaporeHQ checked Sep 28, 202611-5040 contacts →

Indirect evidence

“JonDavidson was formed to meet the needs of the IT/Telecommunications, Manufacturing/Engineering, Banking & Finance, Hospitality and Oil & Gas sectors.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 232 HR business process outsourcing companies based in Singapore

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HR business process outsourcing companies based in Singapore at a glance

As of Sep 28, 2026
14.9%Verified-email coverage
42.6Average contacts per company
11-50Median size (employees)
87.9%Largest-city concentration · Singapore
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
79
11-50
83
51-200
37
201-500
16
501-1,000
9
1,001-5,000
4
5,001-10,000
1
10001+
3

Email recency for this list is measured worldwide rather than for Singapore, so it is reported there. Company counts and contact totals on this page are exact for Singapore, over 232 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among HR business process outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Singapore whose own description of what they do matches “HR business process outsourcing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names HR business process outsourcing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among HR business process outsourcing companies, and records with no verified work email. Companies headquartered outside Singapore are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 1,470 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

HR business process outsourcing companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names HR business process outsourcing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many HR business process outsourcing companies are there based in Singapore?

RevenueBase identified 232 HR business process outsourcing companies headquartered in Singapore as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Gear INC, headquartered in Singapore, tops this list with the largest team on record.

Which city has the most HR business process outsourcing companies?

Singapore leads with 204 headquartered companies, followed by Downtown Core (5) and Sg (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,470 verified decision-maker contacts tracked across these 232 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.