Company lists · Data refreshed September 2026

Top 25 Outsourcing companies based in Kolkata, India

Name: Outsourcing companies based in Kolkata, India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 265 companies tracked

RevenueBase identified 265 outsourcing companies headquartered in Kolkata, India as of September 2026 and tracks 5,741 professional contacts across them, including 296 with verified work emails. Ahmedabad is the largest hub.

This list covers outsourcing companies headquartered in Kolkata, India, 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 14, 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 14, 2026 86% judged on-target in blind review

265Companies

5,741Contacts tracked

296Verified emails

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The 25 largest outsourcing companies based in Kolkata, India

Ranked by team size

Top 25 of 265 outsourcing companies based in Kolkata, India, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Tranistics Data Technologies Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	501-1,000	398 contacts →
	Indirect evidence “Tranistics Data Technologies Pvt.” Source: RevenueBase Database · checked Sep 14, 2026
2	Mervice Infotech Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	1,001-5,000	395 contacts →
	Indirect evidence “As a company with the potential to establish a strong foothold within the BPO domain Mervice promises to go beyond ensuring quality inbound and outbound services.” Source: RevenueBase Database · checked Sep 14, 2026
3	Ivangel Sales And Services PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	10001+	282 contacts →
	Indirect evidence “Ivangel Sales And Services Pvt Ltd is into Facility Management Services, Service Provider, Pay Role & Out Sourceing Services and more.Our clints are Icici Prudential Life…” Source: RevenueBase Database · checked Sep 14, 2026
4	Value RCM Solutions Pvt. LTD	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	201-500	247 contacts →
	Strong evidence “Value RCM Solutions is a leading provider of comprehensive outsourcing solutions tailored to the healthcare industry (Medical Billing Companies, Hospitals, Ambulatory Surgical…” Source: RevenueBase Database · checked Sep 14, 2026
5	Cegura Technology Solutions	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	201-500	246 contacts →
	Strong evidence “Cegura Technology Solutions is a emerging Business Process Outsourcing (BPO) Service provider, offering the most advanced services available today.” Source: RevenueBase Database · checked Sep 14, 2026
6	Floating Numbers Digital Solutions	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	501-1,000	208 contacts →
	Indirect evidence “Floating Numbers is a trusted BPO company in Kolkata.” Source: RevenueBase Database · checked Sep 14, 2026
7	Mytasker	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	166 contacts →
	Indirect evidence “When young minds unleash their voracious ambitions, dreams and aspirations the outcome is always awe-inspiring.” Source: RevenueBase Database · checked Sep 14, 2026
8	recex.co	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	101 contacts →
	Indirect evidence “We are building RECRUITMENT EXCHANGE- a 3 way marketplace, to help companies find quality jobseekers through AI based tools and Franchise Partner Network The Team has already…” Source: RevenueBase Database · checked Sep 14, 2026
9	Nimbus Systems PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	99 contacts →
	Indirect evidence “Nimbus Systems is a leading Offshore and Onsite Software Solutions & IT Service provider present in 10 countries, including India, UAE, Europe, and the US.” Source: RevenueBase Database · checked Sep 14, 2026
10	Excellis IT	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	201-500	83 contacts →
	Strong evidence “EXCELLIS IT is one of the leading service providers in the field of Information Technology that has been instrumental in catering tailored telemarketing outsourcing services along…” Source: RevenueBase Database · checked Sep 14, 2026
11	Peoplepro Management Services PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	11-50	48 contacts →
	Indirect evidence “Just hold on a minute here, in case you are here to know about what we do and how we do it; you are at the right place.” Source: RevenueBase Database · checked Sep 14, 2026
12	Okay Call Centre PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	201-500	45 contacts →
	Indirect evidence “Okay is among the pioneering names in the BPO and KPO industries of the country.” Source: RevenueBase Database · checked Sep 14, 2026
13	Bigpage	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	11-50	37 contacts →
	Strong evidence “Bigpage E-commerce Private Limited is a dynamic, innovative technology service and outsourcing company with wide range of IT service and products.” Source: RevenueBase Database · checked Sep 14, 2026
14	Swastik Infotech Services	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	11-50	27 contacts →
	Indirect evidence “Swastik Infotech is an India based IT company.” Source: RevenueBase Database · checked Sep 14, 2026
15	Bozon Technologies Private Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	11-50	23 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
16	Rising Group	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	21 contacts →
	Strong evidence “Rising Group is an emerging Business Process Outsourcing (BPO) Service provider running since 2013, offering the most advanced services available today.” Source: RevenueBase Database · checked Sep 14, 2026
17	Synergy Accounting Services LLP	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	11-50	20 contacts →
	Strong evidence “Synergy Accounting Services is a young and fast growing finance and accounts outsourcing company primarily dealing with CPAs and accounting firms across the United States of…” Source: RevenueBase Database · checked Sep 14, 2026
18	Itrix IT Solutions Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	11-50	20 contacts →
	Indirect evidence “Welcome to ITRIX IT Solutions Pvt.” Source: RevenueBase Database · checked Sep 14, 2026
19	Raddinas	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	18 contacts →
	Indirect evidence “With a super combo of human and device intelligence, we offer strong and revolutionary answers to streamline your operations so that you can get attention in your center…” Source: RevenueBase Database · checked Sep 14, 2026
20	DWC Technologies Private Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	18 contacts →
	Indirect evidence “Founded in 2014, DWC Technologies Pvt.” Source: RevenueBase Database · checked Sep 14, 2026
21	Vanggharamaa BPO	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	17 contacts →
	Indirect evidence “Vanggharamaa BPO (formerly known as All Area Access Solutions) is a leading customer service company that provides comprehensive support to businesses of all sizes and…” Source: RevenueBase Database · checked Sep 14, 2026
22	First Voice Global Services	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	51-200	17 contacts →
	Strong evidence “Different breed of BPO with over 20 years experience in Outsourcing & Offshoring industry.” Source: RevenueBase Database · checked Sep 14, 2026
23	Dignexus	Strong evidence	Kolkata, IndiaHQ checked Sep 14, 2026	1-10	17 contacts →
	Strong evidence “Dignexus is a Reliable IT Outsourcing Service Provider.” Source: RevenueBase Database · checked Sep 14, 2026
24	Innovative India P Ltd. Part Of Iipl-Ind Innovation P LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	1,001-5,000	16 contacts →
	Indirect evidence “Innovative India Pvt.” Source: RevenueBase Database · checked Sep 14, 2026
25	Vooraf	Indirect evidence	Kolkata, IndiaHQ checked Sep 14, 2026	201-500	13 contacts →
	Indirect evidence “We are one of the leading outsources offering innovative delivery models that promise flexibility to the clients in choosing their involvement level.” Source: RevenueBase Database · checked Sep 14, 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 companies. 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 companies.
Partial evidence: Its own public description names part of outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outsourcing companies. 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 265 outsourcing companies based in Kolkata, India

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Outsourcing companies based in Kolkata, India at a glance

As of Sep 14, 2026

5.2%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

193.2%Largest-city concentration · Ahmedabad

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

11-50

105

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole India list rather than for Kolkata, so it is reported there. Company counts and contact totals on this page are exact for Kolkata, over 265 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 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 Kolkata, India whose own description of what they do matches “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 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 outsourcing companies, and records with no verified work email. Companies headquartered outside Kolkata 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, 296 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 14, 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 companies by metro in India

Outsourcing companies in Ahmedabad512
Outsourcing companies in Bangalore506
Outsourcing companies in New Delhi506
Outsourcing companies in Hyderabad495
Outsourcing companies in Noida494
Outsourcing companies in Pune452
Outsourcing companies in Mumbai412
Outsourcing companies in Chennai382
Outsourcing companies in Kolkata265
Outsourcing companies in Delhi240
Outsourcing companies in Bengaluru224
Outsourcing companies in Gurgaon178
Outsourcing companies in Jaipur164
Outsourcing companies in Indore133
Outsourcing companies in Coimbatore114
Outsourcing companies in Gurugram103
Outsourcing companies in Surat103
Outsourcing companies in Mohali101
Outsourcing companies in Vadodara100
Outsourcing companies in Lucknow91
Outsourcing companies in Navi Mumbai83
Outsourcing companies in Udaipur78
Outsourcing companies in Thane70
Outsourcing companies in Chandigarh62
Outsourcing companies in Rajkot54
Outsourcing companies in Ghaziabad51
Outsourcing companies in Nagpur50
Outsourcing companies in Bhopal48
Outsourcing companies in Kochi42
Outsourcing companies in Ahmadabad39
Outsourcing companies in Bhubaneswar36
Outsourcing companies in Trivandrum33
Outsourcing companies in Faridabad32
Outsourcing companies in Kanpur32
Outsourcing companies in Patna28
Outsourcing companies in Nashik27
Outsourcing companies in Visakhapatnam26

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 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 outsourcing companies are there based in Kolkata, India?

RevenueBase identified 265 outsourcing companies headquartered in Kolkata, India 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?

Tranistics Data Technologies Pvt. LTD, headquartered in Kolkata, tops this list with the largest team on record.

Which city has the most outsourcing companies?

Ahmedabad leads with 512 headquartered companies, followed by Bangalore (506) and New Delhi (506).

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 296 verified decision-maker contacts tracked across these 265 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 14, 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.