Company lists · Data verified August 2026

Top 25 Data integration consulting firms based in Bulgaria

Name: Data integration consulting firms based in Bulgaria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 77 companies tracked

There are 77 data integration consulting firms headquartered in Bulgaria (RevenueBase, August 2026). RevenueBase tracks 1,956 professional contacts across them, including 691 with verified work emails and 119 with mobile numbers. Sofia is the largest hub.

This list covers data integration consulting firms 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.

77Companies

1,956Contacts tracked

691Verified emails

119Mobile numbers

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The 25 largest data integration consulting firms based in Bulgaria

Ranked by team size

Top 25 of 77 data integration consulting firms 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	Mentormate	Veliko Tarnovo	1,001-5,000	638	339
2	Analytics8 Data & Analytics Consultancy	Sofia	51-200	142	90
3	BASE	Plovdiv	n/a	141	2
4	Bright	Sofia	51-200	125	12
5	IBS Bulgaria	Varna	51-200	89	35
6	B EYE	n/a	51-200	76	44
7	Comsoft	Sofia City	11-50	69	6
8	Balkan Services	Sofia	11-50	61	48
9	Estafet	n/a	51-200	56	25
10	BL Consulting LTD	Sofia	n/a	42	2
11	Latona	Sofia	11-50	33	4
12	Cosmos Thrace	Sofia	11-50	21	15
13	Sirma Insurtech	Sofia	51-200	21	6
14	Solitex IBS	Sofia	11-50	16	3
15	Atscale Bulgaria	n/a	51-200	15	10
16	Cozyroc	Sofia	11-50	13	5
17	wiara.com	Plovdiv	11-50	11	3
18	Quantum Omega Group	Sofia	51-200	10	5
19	L E A D V I S I O N	n/a	11-50	9	8
20	The Bytesmiths	Sofia	1-10	8	7
21	Perspective Unity	Sofia	11-50	8	3
22	Clearware	Sofia	11-50	8	1
23	Opsters	Sofia	11-50	6	3
24	Pbcs Group	Sofia	11-50	5	2
25	Rueger Consulting	Sofia	11-50	4	2

Showing 25 of 77 data integration consulting firms based in Bulgaria

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Data integration consulting firms based in Bulgaria at a glance

As of Aug 28, 2026

11-50Median size (employees)

SofiaLargest hub · 48 HQs

119Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Data integration consulting firms by metro

Metro	Companies
Data integration consulting firms in Sofia	48
Data integration consulting firms in Plovdiv	8
Data integration consulting firms in Sofia City	7
Data integration consulting firms in Varna	3
Data integration consulting firms in Veliko Tarnovo	1
Data integration consulting firms in Devin	1
Data integration consulting firms in Burgas	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 “data integration consulting firms”, 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; 2 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 data integration consulting firms are there based in Bulgaria?

There are 77 data integration consulting firms headquartered in Bulgaria as of August 2026 (RevenueBase).

What is the largest company on this list?

Mentormate, headquartered in Veliko Tarnovo, tops this list with the largest team on record.

Which city has the most data integration consulting firms?

Sofia leads with 48 headquartered companies, followed by Plovdiv (8) and Sofia City (7).

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 691 verified decision-maker contacts tracked across these 77 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.