Company lists · Data refreshed September 2026

Top 25 AI software development firms based in Bulgaria

Name: AI software development firms based in Bulgaria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 244 companies tracked

RevenueBase identified 244 AI software development firms headquartered in Bulgaria as of September 2026 and tracks 3,088 professional contacts across them, including 1,220 with verified work emails and 45 with mobile numbers. Sofia is the largest hub.

This list covers AI software development firms headquartered in Bulgaria, 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

244Companies

3,088Contacts tracked

1,220Verified emails

45Mobile numbers

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The 25 largest AI software development firms based in Bulgaria

Ranked by team size

Top 25 of 244 AI software development firms based in Bulgaria, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to AI software development firms: 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	Scalefocus	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	501-1,000	547 contacts →
	Strong evidence “Scalefocus empowers businesses in highly regulated industries to safely build, operate, and scale AI-enabled systems, where software, people and agents converge to unlock…” Source: RevenueBase Database · checked Sep 28, 2026
2	Nemetschek Bulgaria	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	201-500	324 contacts →
	Strong evidence “Our dedicated team service is designed to enhance software development productivity and drive scalable business growth.” Source: RevenueBase Database · checked Sep 28, 2026
3	Accedia	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	201-500	184 contacts →
	Strong evidence “Accedia is a premier European IT services company, specializing in technology consulting and custom software development.” Source: RevenueBase Database · checked Sep 28, 2026
4	Freshcode	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	146 contacts →
	Strong evidence “We are Freshcode, a European software development company delivering client‑focused services to diverse businesses since 2014.” Source: RevenueBase Database · checked Sep 28, 2026
5	Crossroad	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	61 contacts →
	Indirect evidence “Crossroad Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
6	Luxoft Bulgaria	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	59 contacts →
	Partial evidence “Luxoft, a DXC Technology Company (NYSE: DXC), is a digital strategy and software engineering firm providing bespoke technology solutions that drive business change for customers…” Source: RevenueBase Database · checked Sep 28, 2026
7	Prime Holding	Partial evidence	Plovdiv, BulgariaHQ checked Sep 28, 2026	501-1,000	44 contacts →
	Partial evidence “Wiser Technology (BUL:BNR) designs, builds and operates advanced mission-critical software solutions for the world's leading organizations.” Source: RevenueBase Database · checked Sep 28, 2026
8	Tumba Solutions	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	38 contacts →
	Strong evidence “With 10 years of experience in software development and mobile solutions, Tumba Solutions is driven by a true passion for technology, striving for a more sustainable and better…” Source: RevenueBase Database · checked Sep 28, 2026
9	Soft2run	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	37 contacts →
	Strong evidence “Transforming Business with Custom Software & AI Solutions Soft2RUN is a European software development and AI company.” Source: RevenueBase Database · checked Sep 28, 2026
10	Jboxers	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	35 contacts →
	Strong evidence “jBoxers provides software development and consulting services in the areas of enterprise applications, business intelligence solutions, distributed systems, mobile applications…” Source: RevenueBase Database · checked Sep 28, 2026
11	Binerals	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	32 contacts →
	Indirect evidence “Binerals delivers innovative digital solutions by combining technical excellence, responsibility, and a deep commitment to every client.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sirius Software	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	31 contacts →
	Partial evidence “At Sirius Software we build bespoke software solutions for your business.” Source: RevenueBase Database · checked Sep 28, 2026
13	encorp.ai	Partial evidence	Vitosha, BulgariaHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “At encorp.ai, we are a leading provider of enterprise-grade AI solutions, dedicated to making advanced AI technology accessible, practical, and transformative for businesses of…” Source: RevenueBase Database · checked Sep 28, 2026
14	Aisolutions LTD	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	30 contacts →
	Indirect evidence “Empower customer success through AISolutions.” Source: RevenueBase Database · checked Sep 28, 2026
15	Devision	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	29 contacts →
	Partial evidence “Our team consists of pool of talented software engineers, testers and consultants.” Source: RevenueBase Database · checked Sep 28, 2026
16	SQA Service	Strong evidence	Plovdiv, BulgariaHQ checked Sep 28, 2026	11-50	29 contacts →
	Strong evidence “From consulting services to software development, testing, and quality assurance, at SQA we believe in the power of collaboration.” Source: RevenueBase Database · checked Sep 28, 2026
17	Generic Soft	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Trust a reliable, experienced partner who delivers on time and within budget.” Source: RevenueBase Database · checked Sep 28, 2026
18	Infinno	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong evidence “Software and hardware development services.” Source: RevenueBase Database · checked Sep 28, 2026
19	Looming Tech	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	26 contacts →
	Strong evidence “Looming Tech is a software development and technology consulting company, now part of the Eastvantage group.” Source: RevenueBase Database · checked Sep 28, 2026
20	Klevret	Indirect evidence	Blagoevgrad, BulgariaHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Based in Blagoevgrad, Bulgaria, with an additional location in Strumica, North Macedonia, Klevret is one of the region's largest and fastest-growing IT companies.” Source: RevenueBase Database · checked Sep 28, 2026
21	Donatix	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	22 contacts →
	Strong evidence “Donatix provides full-cycle software development and consulting, delivering tailored digital solutions that drive businesses towards growth and success.” Source: RevenueBase Database · checked Sep 28, 2026
22	Conquex	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Founded in 2005, Conquex is a leading Bulgarian company, specializing in IT and software consulting for medium and large enterprises.” Source: RevenueBase Database · checked Sep 28, 2026
23	Eurobgsoftware	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	19 contacts →
	Strong evidence “EuroBG is a software development company that provides a wide range of IT outsourcing services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kodin Soft	Strong evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	18 contacts →
	Strong evidence “We are software development company specializing in high-tech solutions.” Source: RevenueBase Database · checked Sep 28, 2026
25	Celtis LTD	Indirect evidence	Veliko Tarnovo, BulgariaHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “We are problem solvers, ISO 9001 certified technology explorers, coders, innovators and lovers of all things digital.” Source: RevenueBase Database · checked Sep 28, 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: AI software development firms. 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 AI software development firms.
Partial evidence: Its own public description names part of AI software development firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name AI software development firms. 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 244 AI software development firms based in Bulgaria

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AI software development firms based in Bulgaria at a glance

As of Sep 28, 2026

39.5%Verified-email coverage

1.5%Mobile-number coverage

12.7Average contacts per company

1-10Median size (employees)

50.4%Largest-city concentration · Sofia

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

125

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

5600–30

62531–60

2161–90

090–180

14180+

Company record updated

Median 83.0d

00–30

77131–60

91561–90

1,24990–180

153180+

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 AI software development firms, 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 Bulgaria whose own description of what they do matches “AI software development firms”. 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 AI software development firms), 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 AI software development firms, and records with no verified work email. Companies headquartered outside Bulgaria 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, 1,220 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.

AI software development firms by metro

AI software development firms in Sofia123

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 AI software development firms, 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 AI software development firms are there based in Bulgaria?

RevenueBase identified 244 AI software development firms headquartered in Bulgaria 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?

Scalefocus, headquartered in Sofia, tops this list with the largest team on record.

Which city has the most AI software development firms?

Sofia leads with 123 headquartered companies, followed by Sofia City (26) and Plovdiv (17).

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 1,220 verified decision-maker contacts tracked across these 244 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.