Company lists · Data refreshed September 2026
Top 25 Offshore IT outsourcing companies based in Warsaw, Poland
RevenueBase identified 59 offshore IT outsourcing companies headquartered in Warsaw, Poland as of September 2026 and tracks 3,149 professional contacts across them, including 1,400 with verified work emails. Across Poland, Warsaw is the largest hub for this category.
This list covers offshore IT outsourcing companies headquartered in Warsaw, 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.
The 25 largest offshore IT outsourcing companies based in Warsaw, Poland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,290 contacts → | ||||
Strong evidence “Billennium is a global technology consulting and outsourcing services company that provides top-quality IT solutions for enterprises.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 480 contacts → | ||||
Partial evidence “TTMS is a fast-growing IT company with a global presence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 335 contacts → | ||||
Partial evidence “We are one of the fastest-growing technology companies in the Polish market, delivering modern IT solutions that shape the digital growth of organizations from many industries…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 249 contacts → | ||||
Partial evidence “Your dedicated process outsourcing partner with data-driven approach EverHelp is an industry-leading provider of business operations outsourcing and customer support solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 56 contacts → | ||||
Indirect evidence “Mereb Technologies helps European SaaS scale-ups ship faster by giving you dedicated, senior engineering teams under an EU contract.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 contacts → | ||||
Indirect evidence “Novaris is a leading software development company with headquarters located in Warsaw, Poland.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 52 contacts → | ||||
Indirect evidence “Programujemy pomysły Kierujemy się prostymi zasadami, dzięki którym proponujemy naszym klientom efektywniejsze rozwiązania, postępujemy zgodnie z własnymi przekonaniami i uczciwie…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 52 contacts → | ||||
Partial evidence “Chabre is a global IT services partner helping enterprise organizations build, scale and secure their digital capabilities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 44 contacts → | ||||
Partial evidence “Atinea is a software development company delivering advanced IT services to clients all over the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 41 contacts → | ||||
Strong evidence “Jesteśmy firmą IT zajmującą się outsourcingiem usług.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 40 contacts → | ||||
Strong evidence “Awareson is outsourcing company providing IT solutions and comprehensive HR support to the business, including the recruitment of high-end new technology professionals.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 36 contacts → | ||||
Strong evidence “Itelence is a fast-growing IT outsourcing and BPO company, helping global businesses scale with top tech talent from Poland and Eastern Europe.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 32 contacts → | ||||
Strong evidence “We deliver Software Development Services, IT Outsourcing and Nearshore IT Teams Leasing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 31 contacts → | ||||
Strong evidence “Ness Solution is a Polish software development and IT outsourcing company with an international reach that expertly combines business with technology.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 23 contacts → | ||||
Indirect evidence “Most engineering partnerships create vendor lock-in.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 22 contacts → | ||||
Partial evidence “Jesteśmy firmą specjalizującą się w dostarczaniu usług z zakresu szeroko pojętego outsourcingu procesów biznesowych.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 21 contacts → | ||||
Partial evidence “We are a fast-growing IT company founded by people who believe in building long-term relationships with clients and employees.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 20 contacts → | ||||
Partial evidence “Softwarely is a proven and effective team of IT specialists founded in 2014.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 15 contacts → | ||||
Partial evidence “JellyTech helps its clients grow their business through professional software development services, data analytics, and outsourcing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Indirect evidence “We believe that nowadays, in order to be successful in business, you should have reliable partners and vendors with extensive experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 contacts → | ||||
Indirect evidence “Network Partners jest dynamicznie rozwijającą się firmą, która od roku świadczy kompleksowe usługi informatyczne w Warszawie oraz na terenie całego kraju.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Strong evidence “We are a company which provides IT outsourcing services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 9 contacts → | ||||
Partial evidence “IT Factory is a dynamic company with experience in the development, implementation, and support of a wide range of IT solutions from Poland.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Indirect evidence “Since 2005, we grow in parallel with our clients who consciously choose ambitious companies for partnership that provides measurable business benefits thanks to people, systems…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Indirect evidence “INCOalliance is a global company providing software development, engineering, and remote services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: offshore IT 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 offshore IT outsourcing companies.
- Partial evidence
- Its own public description names part of offshore IT outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name offshore IT 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 59 offshore IT outsourcing companies based in Warsaw, Poland
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Offshore IT outsourcing companies based in Warsaw, Poland at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole Poland list rather than for Warsaw, so it is reported there. Company counts and contact totals on this page are exact for Warsaw.
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 offshore IT 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 Warsaw, Poland whose own description of what they do matches “offshore IT 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 offshore IT 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 offshore IT outsourcing companies, and records with no verified work email. Companies headquartered outside Warsaw 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, 1,400 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 offshore IT 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 offshore IT outsourcing companies are there based in Warsaw, Poland?
RevenueBase identified 59 offshore IT outsourcing companies headquartered in Warsaw, 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?
Billennium, headquartered in Warsaw, tops this list with the largest team on record.
Which city in Poland has the most offshore IT outsourcing companies?
Warsaw leads Poland with 59 headquartered companies, followed by Krakow (14) and Wroclaw (12).
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 1,400 verified decision-maker contacts tracked across these 59 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.
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