Company lists · Data refreshed September 2026

Top 25 Outsourcing service providers based in Singapore

Name: Outsourcing service providers based in Singapore
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 84 companies tracked

RevenueBase identified 84 outsourcing service providers headquartered in Singapore as of September 2026 and tracks 4,467 professional contacts across them, including 481 with verified work emails. Singapore is the largest hub.

This list covers outsourcing service providers 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 21, 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 21, 2026 86% judged on-target in blind review

84Companies

4,467Contacts tracked

481Verified emails

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The 25 largest outsourcing service providers based in Singapore

Ranked by team size

Top 25 of 84 outsourcing service providers based in Singapore, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outsourcing service providers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Gear INC	Strong evidence	SingaporeHQ checked Sep 21, 2026	5,001-10,000	1,974 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 21, 2026
2	P-Serv PTE LTD	Strong evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	235 contacts →
	Strong evidence “P-Serv \| Now PERSOL Outsourcing We’ve moved.” Source: RevenueBase Database · checked Sep 21, 2026
3	Opus IT Services PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	225 contacts →
	Indirect evidence “OPUS IT Services Pte Ltd is a leading IT services and solutions company in Singapore.” Source: RevenueBase Database · checked Sep 21, 2026
4	RMA Group	Strong evidence	SingaporeHQ checked Sep 21, 2026	1,001-5,000	121 contacts →
	Strong evidence “Established in 1988, RMA Group is a leading global outsourcing specialist headquartered in Singapore with more than 1,200 employees across five countries throughout Asia-Pacific.” Source: RevenueBase Database · checked Sep 21, 2026
5	Alphaeus PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	201-500	116 contacts →
	Indirect evidence “Established in 2018, Alphaeus has just one goal in mind – to be a one-stop IT solution provider for all Information Technology (IT) support services in Singapore.” Source: RevenueBase Database · checked Sep 21, 2026
6	Direct Sourcing Solutions	Strong evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	96 contacts →
	Strong 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 21, 2026
7	Accountstaff	Strong evidence	SingaporeHQ checked Sep 21, 2026	501-1,000	76 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 21, 2026
8	Digital Business People	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	73 contacts →
	Indirect evidence “About DBP (#DigitalBusinessPeople #DBPtower #Digital #Business #People ) Digital Business People Pte.” Source: RevenueBase Database · checked Sep 21, 2026
9	Octopus8	Strong evidence	SingaporeHQ checked Sep 21, 2026	11-50	59 contacts →
	Strong evidence “Octopus8, a new tech leader in AI-powered business process outsourcing, provides intelligent automation solutions and services in customer service, technical support, digital…” Source: RevenueBase Database · checked Sep 21, 2026
10	Incall Systems PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	58 contacts →
	Indirect evidence “inCall Systems is an Outsourced Business Service Provider (BPO) of over 20 years, offering End-to-End Integrated Marketing and Customer Services solutions that delivers results.” Source: RevenueBase Database · checked Sep 21, 2026
11	Grow Asia	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	52 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 21, 2026
12	Transfingo Group Of Companies	Strong evidence	SingaporeHQ checked Sep 21, 2026	201-500	39 contacts →
	Strong evidence “Process, Technology, Outsourcing.” Source: RevenueBase Database · checked Sep 21, 2026
13	Infosys BPM Singapore	Indirect evidence	SingaporeHQ checked Sep 21, 2026	201-500	31 contacts →
	Indirect evidence “Infosys BPM Ltd, the business process management subsidiary of Infosys Ltd.(NYSE: INFY), was set up in April 2002.” Source: RevenueBase Database · checked Sep 21, 2026
14	Melioris Private Limited	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Established in 2002 and headquartered in Singapore, Melioris is the leading Business Process Services Provider in Asia and has been helping our customers in Asia to manage and…” Source: RevenueBase Database · checked Sep 21, 2026
15	Modular Infotech Singapore PTE LTD	Strong evidence	SingaporeHQ checked Sep 21, 2026	11-50	20 contacts →
	Strong evidence “We offer business process outsourcing solutions to our global clients by leveraging process, domain and people management expertise.” Source: RevenueBase Database · checked Sep 21, 2026
16	Flexxo PTE LTD	Strong evidence	SingaporeHQ checked Sep 21, 2026	11-50	13 contacts →
	Strong evidence “FLEXXO - OUTSOURCING THAT EMPOWERS BUSINESS Accounting, taxation, audit, corporate secretary, human resources and payroll - we're here to support your business needs.” Source: RevenueBase Database · checked Sep 21, 2026
17	Jingke Technology PTE LTD	Strong evidence	Woodlands, SingaporeHQ checked Sep 21, 2026	11-50	13 contacts →
	Strong evidence “Our Vision Our vision is to be the premier provider of business process outsourcing in semiconductor industry through forging long term partnership with both customer and…” Source: RevenueBase Database · checked Sep 21, 2026
18	Experdex	Indirect evidence	Central Business District, SingaporeHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Reinvention and ExperDex go hand-in-hand as far as technology and process advancement are concerned.” Source: RevenueBase Database · checked Sep 21, 2026
19	D&s Solutions PTE LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	51-200	8 contacts →
	Indirect evidence “Providing professional & quality services to all our clients is of the utmost importance to us.” Source: RevenueBase Database · checked Sep 21, 2026
20	Vellas Outsourcing PTE LTD	Strong evidence	SingaporeHQ checked Sep 21, 2026	1-10	5 contacts →
	Strong evidence “Our expedition in Vellas Outsourcing Pte Ltd started in 2002, with the aim of looking for effective solutions for different categories of customers, and conducting continuous…” Source: RevenueBase Database · checked Sep 21, 2026
21	Trellis Consulting	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “At Trellis Consulting, we stand at the forefront of strategic business transformation.” Source: RevenueBase Database · checked Sep 21, 2026
22	Psideo Singapore PTE LTD	Indirect evidence	Central Business District, SingaporeHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence “Based in Geneva (HQ), Singapore and Bangalore, operating in more than 30 countries, PSiDEO provides a wide range of premium outsourced IT services to global customers, as well as…” Source: RevenueBase Database · checked Sep 21, 2026
23	VUI Systems Pte. LTD	Indirect evidence	SingaporeHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence “Established in 2004 in US, VUI Systems Pte.” Source: RevenueBase Database · checked Sep 21, 2026
24	Impact BPO Services PTE LTD	Strong evidence	Kallang, SingaporeHQ checked Sep 21, 2026	1-10	2 contacts →
	Strong evidence “Established in 2019, IMPACT BPO is a successful Recruitment and Business Process Outsourcing (BPO) service group with over 200 headcounts in manpower augmentation and resourcing.” Source: RevenueBase Database · checked Sep 21, 2026
25	tech2reach.com	Indirect evidence	SingaporeHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence “Offshore talents, who are fully committed to your company.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: outsourcing service providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names outsourcing service providers.
Partial evidence: Its own public description names part of outsourcing service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outsourcing service providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 84 outsourcing service providers based in Singapore

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Outsourcing service providers based in Singapore at a glance

As of Sep 21, 2026

10.8%Verified-email coverage

53.2Average contacts per company

11-50Median size (employees)

88.1%Largest-city concentration · Singapore

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 84 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 outsourcing service providers, 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 “outsourcing service providers”. 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 outsourcing service providers), 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 outsourcing service providers, 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, 481 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 21, 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.

Outsourcing service providers by metro

Outsourcing service providers in Singapore74

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 outsourcing service providers, 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 outsourcing service providers are there based in Singapore?

RevenueBase identified 84 outsourcing service providers 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 outsourcing service providers?

Singapore leads with 74 headquartered companies, followed by Downtown Core (1) and Jurong East (1).

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 481 verified decision-maker contacts tracked across these 84 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 21, 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.