Company lists · Data refreshed September 2026

Top 25 Secure software development consulting firms based in Poland

RevenueBase identified 118 secure software development consulting firms headquartered in Poland as of September 2026 and tracks 1,545 professional contacts across them, including 430 with verified work emails. Warsaw is the largest hub.

This list covers secure software development consulting firms headquartered in Poland, 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 29, 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 29, 2026 86% judged on-target in blind review
118Companies
1,545Contacts tracked
430Verified emails
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The 25 largest secure software development consulting firms based in Poland

Ranked by team size
Top 25 of 118 secure software development consulting firms based in Poland, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to secure software development consulting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceWrocław, PolandHQ checked Sep 29, 2026201-500358 contacts →

Strong evidence

“Qulix is an international software development, testing and consultancy company.”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceRzeszów, PolandHQ checked Sep 29, 2026201-500328 contacts →

Partial evidence

“Edvantis is a Data, AI & Software Engineering Partner that turns ideas into systems your business can rely on.”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceGdansk, PolandHQ checked Sep 29, 2026201-500147 contacts →

Indirect evidence

“Solwit is a professional engineering services company founded in 2011.”

Source: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceWarsaw, PolandHQ checked Sep 29, 202651-20070 contacts →

Strong evidence

“NerdySoft is a software development and consulting agency proudly established and run by a team of fintech nerds.”

Source: RevenueBase Database · checked Sep 29, 2026
5Strong evidenceWarsaw, PolandHQ checked Sep 29, 202651-20052 contacts →

Strong evidence

“LLInformatics is a software consulting and development firm that builds customized, compliant, intelligent digital solutions and products, and conducts technical audits and…”

Source: RevenueBase Database · checked Sep 29, 2026
6Strong evidenceGliwice, PolandHQ checked Sep 29, 202651-20038 contacts →

Strong evidence

“CodeConcept specializes in creating software, firmware, web and mobile applications, integrating information systems and in IT consulting.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceWrocław, PolandHQ checked Sep 29, 202651-20034 contacts →

Indirect evidence

“We believe that innovations should be available to everyone.”

Source: RevenueBase Database · checked Sep 29, 2026
8Strong evidenceWarsaw, PolandHQ checked Sep 29, 202611-5025 contacts →

Strong evidence

“Professnet is a technology and consulting company helping enterprises and software development teams build secure, automated, and scalable cloud infrastructures.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceŁódź, PolandHQ checked Sep 29, 202611-5023 contacts →

Indirect evidence

“Ikaria to ekspert bezpieczeństwa IT.”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidencePleszew, PolandHQ checked Sep 29, 202611-5019 contacts →

Partial evidence

“Hire an agile development team or let us build your product from scratch We support CTOs who need agile teams of skilled developers.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceWarsaw, PolandHQ checked Sep 29, 202651-20016 contacts →

Partial evidence

“DEVTALENTS brings together the most knowledgeable and experienced software developers from around the world.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceWarsaw, PolandHQ checked Sep 29, 202611-5015 contacts →

Partial evidence

“Inseqr offers modern, innovative solutions in the field of widely understood security.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceWarsaw, PolandHQ checked Sep 29, 202651-20014 contacts →

Indirect evidence

“We help our enterprise clients to deliver bespoke solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceWarsaw, PolandHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

“Jesteśmy grupą specjalistów działających na rynku bezpieczeństwa informacji od wielu lat.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceWola, PolandHQ checked Sep 29, 202611-5012 contacts →

Indirect evidence

“iSecure to firma doradcza, której działalność skoncentrowana jest na zagadnieniach związanych z bezpieczeństwem informacji, w szczególności zaś na ochronie danych osobowych…”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceŁódź, PolandHQ checked Sep 29, 202611-5011 contacts →

Indirect evidence

“EngineArch transforms complex technical challenges into streamlined, scalable solutions that drive real business value!”

Source: RevenueBase Database · checked Sep 29, 2026
17Strong evidenceWarsaw, PolandHQ checked Sep 29, 202611-5010 contacts →

Strong evidence

“DevOpsi is a DevOps consulting, software development, and IT outsourcing company that helps businesses deliver software faster and more reliably.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceOpole, PolandHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“Aspello Sp.”

Source: RevenueBase Database · checked Sep 29, 2026
19Partial evidenceKraków, PolandHQ checked Sep 29, 202611-508 contacts →

Partial evidence

“We are an IT consultancy focused on developing custom software solutions for your business.”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidenceWrocław, PolandHQ checked Sep 29, 202611-507 contacts →

Partial evidence

“Our specialists find the weakest points in your company and will show you how to fix them step-by-step, as well as how to improve your security.”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidencePoznan, PolandHQ checked Sep 29, 202611-507 contacts →

Partial evidence

“For 18 years we've built software for clients in regulated and high-stakes environments.”

Source: RevenueBase Database · checked Sep 29, 2026
22Strong evidenceWroclaw, PolandHQ checked Sep 29, 202611-506 contacts →

Strong evidence

“Hi there, 4code is an Innovation Technology & Consulting company focused on secure software and product development.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceWarsaw, PolandHQ checked Sep 29, 202611-506 contacts →

Indirect evidence

“kreuzwerker sp.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidencePoznań, PolandHQ checked Sep 29, 20261-106 contacts →

Indirect evidence

“Specjaliści IT z doświadczeniem.”

Source: RevenueBase Database · checked Sep 29, 2026
25Strong evidenceSzczecin, PolandHQ checked Sep 29, 20261-106 contacts →

Strong evidence

“Cybernite is a consulting company delivering information security training, audits and implementation of information technology solutions.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 118 secure software development consulting firms based in Poland

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Secure software development consulting firms based in Poland at a glance

As of Sep 29, 2026
27.8%Verified-email coverage
13.1Average contacts per company
1-10Median size (employees)
32.2%Largest-city concentration · Warsaw
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
69
11-50
37
51-200
9
201-500
3

Email recency for this list is measured worldwide rather than for Poland, so it is reported there. Company counts and contact totals on this page are exact for Poland, over 118 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 secure software development consulting 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 Poland whose own description of what they do matches “secure software development consulting 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 secure software development consulting 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 secure software development consulting firms, and records with no verified work email. Companies headquartered outside Poland 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, 430 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 29, 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.

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 secure software development consulting 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 secure software development consulting firms are there based in Poland?

RevenueBase identified 118 secure software development consulting firms headquartered in Poland 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?

QULIX, headquartered in Wroclaw, tops this list with the largest team on record.

Which city has the most secure software development consulting firms?

Warsaw leads with 38 headquartered companies, followed by Wroclaw (12) and Poznan (10).

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 430 verified decision-maker contacts tracked across these 118 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 29, 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.