Company lists · Data verified August 2026

Top 10 Customer support outsourcing companies based in Bulgaria

Name: Customer support outsourcing companies based in Bulgaria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 34 companies tracked

There are 34 customer support outsourcing companies headquartered in Bulgaria (RevenueBase, August 2026). RevenueBase tracks 1,157 professional contacts across them, including 241 with verified work emails and 7 with mobile numbers. Sofia is the largest hub.

This list covers customer support outsourcing companies headquartered in Bulgaria, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

34Companies

1,157Contacts tracked

241Verified emails

7Mobile numbers

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The 10 largest customer support outsourcing companies based in Bulgaria

Ranked by team size

Top 10 of 34 customer support outsourcing companies based in Bulgaria, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Sixty K LTD 60k	Plovdiv	1,001-5,000	396	2
2	Pontica Solutions	Varna	501-1,000	262	149
3	GMS Bulgaria	Sofia	51-200	59	23
4	Telus International Bulgaria	Sofia City	1,001-5,000	51	28
5	CXG Business Process Outsourcing	Sofia	51-200	51	26
6	Global Services Bulgaria JSC	Sofia	51-200	21	2
7	Markam Solutions	Sofia	51-200	15	7
8	An Allnew Tech LTD	Sofia	51-200	14	1
9	Tomi REN	Sofia	11-50	7	2
10	Bulgcom	Sofia City	1-10	1	1

Showing 10 of 34 customer support outsourcing companies based in Bulgaria

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Customer support outsourcing companies based in Bulgaria at a glance

As of Aug 28, 2026

51-200Median size (employees)

SofiaLargest hub · 19 HQs

7Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Customer support outsourcing companies by metro

Metro	Companies
Customer support outsourcing companies in Sofia	19
Customer support outsourcing companies in Varna	5
Customer support outsourcing companies in Sofia City	3
Customer support outsourcing companies in Burgas	2
Customer support outsourcing companies in Veliko Tarnovo	1
Customer support outsourcing companies in Plovdiv	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “customer support outsourcing companies”, with match quality audited by blind human judging, and headquartered in Bulgaria.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many customer support outsourcing companies are there based in Bulgaria?

There are 34 customer support outsourcing companies headquartered in Bulgaria as of August 2026 (RevenueBase).

What is the largest company on this list?

Sixty K LTD 60k, headquartered in Plovdiv, tops this list with the largest team on record.

Which city has the most customer support outsourcing companies?

Sofia leads with 19 headquartered companies, followed by Varna (5) and Sofia City (3).

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 241 verified decision-maker contacts tracked across these 34 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.