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Legacy modernization in Wrocław, ranked for 2027

Best legacy modernization software houses in Wrocław

Ask how they keep the old system running while the new one grows, and how they migrate data. A full rewrite with a big-bang switch is the riskiest plan. I found 13 companies with an office in Wrocław that show legacy modernization work in at least one source (13 by their Clutch profile), and checked each in the court register, its latest filing and its employee reviews. 11 meet the ranking criteria and the 10 highest scores are below. I sell the alternative: one senior engineer working with AI agents.

In short: The highest-scoring legacy modernization software houses in Wrocław for 2027 are CSHARK (score 89), Grape Up (score 81) and Accesto (score 76). The 0 to 100 score combines court register data, the latest financial statement, Clutch client reviews, GoWork employee reviews and open roles on the job boards. Paid Clutch positions do not count.

Get matched offers in 24 hoursSee the top 10Download the data (CSV)

  • 13companies checked
  • 13verified in KRS
  • 12with a financial statement
  • 11with an employee review profile
  • 10ranked

Which company fits your project

  • CSHARKLegacy modernization is 40% of service lines on its Clutch profile. Score 89, 4.9 on Clutch from 19 reviews, profit in 2025.
  • Grape UpLegacy modernization is 10% of service lines on its Clutch profile. Score 81, 5.0 on Clutch from 6 reviews, profit in 2025.
  • AccestoLegacy modernization is 20% of service lines on its Clutch profile. Score 76, 4.9 on Clutch from 20 reviews, profit in 2025.
  • Software MindLegacy modernization is 10% of service lines on its Clutch profile. Score 74, 4.9 on Clutch from 58 reviews, profit in 2025.
  • One senior instead of a teamIf the project fits one person with coding agents, compare the cost before you pay an agency margin.

The picks come from the data in the full table, not from who paid. A company enters this list when at least one source shows legacy modernization work; the share on Clutch is what the company declares.

The top 10 at a glance

Click a column to sort.

#CompanyPeopleClutchRateFocusScore
1
CSHARKprofit 5.2M PLN (2025)
250-9994.9 · 1950–99 USD/hCustom software89
2
Grape Upprofit 27.1M PLN (2025)8 layoff mentions
50-2495.0 · 650–99 USD/hHybrid cloud engineering81
3
Accestoprofit 280K PLN (2025)
10-494.9 · 2050–99 USD/hPHP application modernization76
4
Software Mindprofit 7.9M PLN (2025)GoWork 4/17
1000-99994.9 · 5850–99 USD/hCustom software74
5
Genuitekprofit 53K PLN (2023)
10-494.9 · 650–99 USD/hReact73
6
Devqubeprofit 483K PLN (2025)
10-494.9 · 625–49 USD/h.NET72
7
Stratoflowprofit 869K PLN (2025)
10-494.8 · 1250–99 USD/hJava70
8
Ulan Softwareprofit 261K PLN (2024)
10-495.0 · 125–49 USD/hWeb and mobile68
9
GP Solutionsloss 36K PLN (2023)
250-9994.9 · 2450–99 USD/hCustom enterprise software61
1050-2494.8 · 4450–99 USD/hReact59

The ranking

The order below is the score from five axes: transparency, client reputation, stability, specialization and activity. Here specialization measures how strong the legacy modernization evidence is. Weights and the full method are on the guide page.

Financial figures come from the latest filing of the Polish company. For subsidiaries of foreign groups they can be far from the size of the real business. Open the sources under each entry before you shortlist.

CSHARK

Software and digital transformation partner for fintech, regtech and industrial clients, with a Singapore office for Asian banks.

Clutch: 4.9 (19 reviews)Rate: 50–99 USD/hMin. project: 50,000 USD

Best for: Fintech, regtech and industrial clients with a budget above 50,000 USD who want a mid-size Polish company with ISO 27001 and cloud partnerships.

Pros

  • Revenue of 80.9M PLN with a profit of 5.2M PLN in 2025, and four private individuals as owners (KRS).
  • ISO 27001, AWS and Microsoft partnerships, and a clear focus on two sectors instead of “everything for everyone”.
  • 4.9 on Clutch from 19 reviews; the Fenergo work appears in two separate case studies.
  • Hiring on the boards (3 open roles) and a Singapore office for Asian banking clients.

Cons

  • Logos of global banks on the homepage without case studies: treat them as unverified.
  • Minimum project of 50,000 USD, among the highest in the city; not for an MVP.
  • Headcount is not stated on the site; Clutch says 250 to 999, employee reviews are few and mixed (7 positive, 6 negative).

From their website and Clutch profile

  • CSHARK focuses on two sectors, fintech/regtech and industrial, and Fenergo appears in two separate case studies (source).
  • CSHARK is the only firm in the set with an Asian office, CSHARK Singapore Pte. Ltd on Robinson Road (source).
  • The homepage shows logos of Citibank, Allianz, BNP Paribas and Vodafone, but none of them has a case study, so treat them as unverified (source).
  • The site states no headcount, while Clutch lists 250 to 999 employees and a USD 50k minimum project (source).

Clients they name: Fenergo, ASA International, Telenor, RegenHU, Nudge, Pastdue Credit Solutions

Custom softwareApplication modernizationData and integrationCloud and infrastructureR&D and product designSoftware outsourcingJavaKotlinC#.NET
CSHARK homepage
Homepage of www.cshark.com, screenshot taken October 28, 2026. Content and marks belong to CSHARK.

Verdict. A mid-size house for regulated industries, with ISO 27001 to show for it. Come with a budget above 50,000 USD and a compliance checklist, not a two-month MVP.

Grape Up

Enterprise cloud, legacy modernization, data platforms and AI engineering for automotive, finance, manufacturing and aviation companies.

Clutch: 5.0 (6 reviews)Rate: 50–99 USD/hMin. project: 50,000 USD

Best for: Automotive, finance and aviation enterprises modernizing legacy systems or building a cloud and data platform, with a budget above 50,000 USD.

Pros

  • Grape Up reported a profit of 27.1M PLN on 92.3M PLN of revenue in 2025.
  • Polish funds and the founders' family foundations own the company. Headquarters are in Kraków, with a Wrocław development center.
  • Grape Up runs its own platforms for legacy modernization and data sharing, such as G.Tx and Databoostr.
  • Clutch shows a 5.0 rating.

Cons

  • Clutch shows only 6 reviews, and only one of 25 case studies names the client. Logos such as Porsche come without described work.
  • GoWork employee reviews are negative (5 positive, 17 negative), with 8 mentions of layoffs, though the latest review is from 2024.
  • The job boards showed 1 open role at the last snapshot.

From their website and Clutch profile

  • Headquarters are in Kraków, and Wrocław is one of two Polish development centers. Grape Up has a Wrocław presence but is not a Wrocław company (source).
  • 24 of 25 case studies are anonymized by sector, and Cummins is the only named client. The homepage logo wall shows image files without text names (source).
  • The about page claims over 20 years of operation but gives no year. The Polish KRS entry is from 2014, and Clutch lists 2006 (source).
  • The site shows no ISO or cloud partner certifications, although Grape Up sells sovereign cloud and AI governance products (source).
  • Clutch shows 5.0 from 6 reviews, a $50,000 minimum project, $50 to $99 per hour and 50 to 249 employees (source).

Clients they name: Cummins

Hybrid cloud engineeringApplication and legacy modernization (G.Tx process)Data platformsAI and advanced analyticsAgentic AI product engineeringOwn products: Cloudboostr, Databoostr, AiboostrReactPythonKubernetesAI
Grape Up homepage
Homepage of grapeup.com, screenshot taken October 28, 2026. Content and marks belong to Grape Up.

Verdict. Grape Up is profitable but hard to verify from outside, so ask for named references in your industry before you sign. For a startup MVP it is too big.

Accesto

Wrocław studio modernizing and scaling legacy PHP SaaS products with Symfony and Laravel.

Clutch: 4.9 (20 reviews)Rate: 50–99 USD/hMin. project: 50,000 USDPremier Verified

Best for: SaaS founders with an aging PHP codebase that needs upgrades, refactoring or scaling.

Pros

  • Focuses on one problem, legacy PHP modernization, with Symfony-certified developers.
  • Case studies report an 83% load-time cut for NotebookRank.
  • Profitable in 2025, with 280K PLN of profit on 3.9M PLN of revenue.
  • Clutch shows 4.9 from 20 reviews, with the Premier Verified badge.

Cons

  • A team of 15 developers limits how much parallel work it can take.
  • The minimum project on Clutch is $50,000.
  • Google Cloud and education, two ranking topics, have no support on the site.

From their website and Clutch profile

  • The home page claims 16 years on the market and 15 developers with 8 years of average seniority (source)
  • Case studies report an 83% load-time cut for NotebookRank and 40% faster time to market for Placker (source)
  • Google Cloud appears only as a technology option, with no partnership stated (source)
  • The about page links a Docker e-book and the PHP at Scale newsletter (source)

Clients they name: Placker, NotebookRank, MediaHQ, Skylegs, WorkPanda, Healthgraphic

PHP application modernizationPHP upgrades and code reviewRefactoringSymfony developmentLaravel developmentDocker and cloudPHPSymfony
Accesto homepage
Homepage of accesto.com, screenshot taken October 28, 2026. Content and marks belong to Accesto.

Verdict. Pick Accesto to rescue a PHP SaaS that slows down as it grows. For a new app outside PHP, look elsewhere.

Software Mind

Large Kraków-based engineering services company building software, cloud and AI systems for telecom, finance and media clients.

Clutch: 4.9 (58 reviews)Rate: 50–99 USD/hMin. project: 50,000 USDPremier Verified

Best for: Telecom, finance and media enterprises that need a large, certified multi-role team for a long program.

Pros

  • Software Mind is the largest company in this group, with 254.9M PLN of revenue and 7.9M PLN of profit in 2025.
  • Clutch shows 58 reviews averaging 4.9.
  • The site declares ISO 9001, ISO 14001 and ISO 27001.
  • Software Mind has Polish offices in Kraków, Warsaw, Rzeszów and Wrocław, plus nearshore centers abroad.

Cons

  • GoWork opinions lean negative, with 4 positive against 17 negative and 5 mentions of layoffs.
  • Private equity firm Enterprise Investors has backed the company since 2020, which favors growth targets and larger accounts.
  • A small product will be a small account here.

From their website and Clutch profile

  • Software Mind was founded in 1999 in Kraków as Websoft. Private equity firm Enterprise Investors invested EUR 25 million in 2020 (source).
  • The site claims 1600+ experts and ISO 9001, ISO 14001 and ISO 27001 certification (source).
  • Polish offices are in Kraków, Warsaw, Rzeszów and Wrocław. The contact page also lists the US, Germany, Romania, Moldova and Latin America (source).
  • The legal entity is Software Mind S.A. with KRS 0001180898, which explains the recent registry date in our file (source).

Clients they name: Backbase, T-Mobile, Orange, nShift, CERN, Baillie Gifford

Custom software developmentAI-accelerated SDLCCloud and data engineeringDedicated teams and nearshoringEmbedded softwareSecurity and QAReactAngularJavaAWS

Verdict. Pick Software Mind for telecom, finance or media programs that need many roles and certifications. For an MVP or a single small app, it is too big.

Genuitek

Clutch: 4.9 (6 reviews)Rate: 50–99 USD/hMin. project: 10,000 USD

Pros

  • Profit of 53K PLN (2023)
  • Owned by private individuals (KRS)

Cons

  • n/a
ReactJavaFlutter
Genuitek homepage
Homepage of genuitek.com, screenshot taken October 28, 2026. Content and marks belong to Genuitek.

Verdict. Strongest on transparency and specialization. Weakest axis: activity (1.5/5).

Devqube

Clutch: 4.9 (6 reviews)Rate: 25–49 USD/hMin. project: 5,000 USD

Pros

  • Profit of 483K PLN (2025)
  • Owned by private individuals (KRS)

Cons

  • n/a
.NET
Devqube homepage
Homepage of devqube.com, screenshot taken October 28, 2026. Content and marks belong to Devqube.

Verdict. Strongest on transparency and stability. Weakest axis: activity (2.5/5).

Stratoflow

Clutch: 4.8 (12 reviews)Rate: 50–99 USD/hMin. project: 10,000 USD

Pros

  • Profit of 869K PLN (2025)

Cons

  • n/a
JavaSalesforceSpringAI
Stratoflow homepage
Homepage of stratoflow.com, screenshot taken October 28, 2026. Content and marks belong to Stratoflow.

Verdict. Strongest on specialization and transparency. Weakest axis: activity (2.0/5).

Ulan Software

Wrocław software house building marketplaces, booking engines and low-code platforms, with its own product Bowwe.

Clutch: 5.0 (1 review)Rate: 25–49 USD/hMin. project: 25,000 USD

Best for: Retailers and startups that need a marketplace, booking system or delivery app built on a ready engine.

Pros

  • Built a delivery app for IKEA and Taskrabbit.
  • Runs its own no-code product, Bowwe.
  • Earned 261K PLN of profit on 5.6M PLN of revenue in 2024.

Cons

  • Clutch shows a single review.
  • The site never mentions blockchain, so treat the Clutch blockchain listing with care.
  • The case studies page shows only two projects.

From their website and Clutch profile

  • The home page claims a team of 53+ and 13+ years on the market (source).
  • The case studies page shows two projects, a delivery app for IKEA and Taskrabbit and the Bowwe no-code platform (source).
  • The site does not mention blockchain work, though Clutch lists it at 10% (source).
  • The home page footer gives NIP 899 286 43 10 and the Dąbrowskiego 42 address, matching KRS (source).

Clients they name: IKEA, Taskrabbit, Poczta Polska, PKO Bank Polski, Bowwe

Web and mobile developmentUX/UI designQA and DevOpsCTO as a serviceDedicated teams and team augmentationStartup studioAI
Ulan Software homepage
Homepage of ulansoftware.com, screenshot taken October 28, 2026. Content and marks belong to Ulan Software.

Verdict. Use Ulan for a marketplace or booking product built on its engines. For blockchain work look elsewhere, since its site shows none.

GP Solutions

Munich-based software group with travel tech roots, selling custom development and dedicated teams from Polish offices.

Clutch: 4.9 (24 reviews)Rate: 50–99 USD/hMin. project: 50,000 USD

Best for: A travel company or tour operator that needs booking or operations software from a team that knows the domain.

Pros

  • Long travel tech record, with clients like Air Canada, Tallink and Railbookers.
  • Publishes a project floor of 50,000 EUR on its home page.
  • Clutch shows 4.9 from 24 reviews.
  • Lists Ruby on Rails among its technologies, next to .NET, Java and PHP.

Cons

  • The Polish company is small, with a loss of 36K PLN on 1.5M PLN of revenue in 2023.
  • The imprint names only GP Solutions GmbH in Germany, and the Łódź company from KRS is absent from the site.
  • Had zero open roles at the last snapshot and almost no GoWork history.

From their website and Clutch profile

  • The imprint names GP Solutions GmbH in Unterschleißheim near Munich and no Polish company. (source)
  • The imprint lists offices in Kraków, Warsaw and Wrocław, while KRS places the Polish company in Łódź. (source)
  • The home page says medium and large projects start from 50,000 EUR. (source)
  • The home page claims experience since 2002, 300+ projects and a 94% retention rate. (source)

Clients they name: Education First, Mercedes-Benz, Air Canada, Tallink, XING, Migros, Railbookers

Custom enterprise softwareWeb and mobile appsDedicated development teamsLegacy modernizationAI and data analyticsShopify developmentAI
GP Solutions homepage
Homepage of gpsolutions.com, screenshot taken October 28, 2026. Content and marks belong to GP Solutions.

Verdict. GP Solutions fits a travel business with a mid-size budget and a long roadmap. Confirm the contracting entity before you sign.

JetSoftPro

Clutch: 4.8 (44 reviews)Rate: 50–99 USD/hMin. project: 10,000 USD

Pros

  • Owned by private individuals (KRS)
  • 4.8 on Clutch from 44 reviews

Cons

  • n/a
ReactAngular.NETC#JavaKotlinPythonPHPAWSAzure
JetSoftPro homepage
Homepage of jetsoftpro.com, screenshot taken October 28, 2026. Content and marks belong to JetSoftPro.

Verdict. Strongest on specialization and transparency. Weakest axis: stability (1.5/5).

Every company we checked

The table below has the 13 companies with legacy modernization evidence in Wrocław, including the ones that do not qualify for the ranking, with the reason. Sort by any column.

Show all 13 companies
Size: Rate: · 13
#CompanyHQ (KRS)PeopleClutchRateRevenueProfitFocusScoreLinks
1
CSHARKCustom software
Wrocław250-9994.9 · 1950–99 USD/h80.9M PLN5.2M PLNCustom software89WebsitePortfolioClutchKRS
2
Grape UpHybrid cloud engineering
Kraków50-2495.0 · 650–99 USD/h92.3M PLN27.1M PLNHybrid cloud engineering81WebsitePortfolioClutchKRS
3
AccestoPHP application modernization
Wrocław10-494.9 · 2050–99 USD/h3.9M PLN280K PLNPHP application modernization76WebsitePortfolioClutchKRS
4
Software MindCustom software
Kraków1000-99994.9 · 5850–99 USD/h254.9M PLN7.9M PLNCustom software74WebsitePortfolioClutchKRS
5Wrocław10-494.9 · 650–99 USD/h1.8M PLN53K PLNReact73WebsiteClutchKRS
6Wrocław10-494.9 · 625–49 USD/h5.6M PLN483K PLN.NET72WebsiteClutchKRS
7Wrocław10-494.8 · 1250–99 USD/h4.8M PLN869K PLNJava70WebsiteClutchKRS
8
Ulan SoftwareWeb and mobile
Wrocław10-495.0 · 125–49 USD/h5.6M PLN261K PLNWeb and mobile68WebsitePortfolioClutchKRS
9
GP SolutionsCustom enterprise software
Łódź250-9994.9 · 2450–99 USD/h1.5M PLN-36K PLNCustom enterprise software61WebsitePortfolioClutchKRS
10Wrocław50-2494.8 · 4450–99 USD/hn/an/aReact59WebsiteClutchKRS
–
Codewaveproduct company
Wrocław10-495.0 · 1350–99 USD/h13.8M PLN3.7M PLNJavaScript79WebsiteClutchKRS
–
FINGO (Regnology Software Poland)product company
Wrocław50-2494.8 · 1350–99 USD/h23.2M PLN509K PLNRegulatory reporting software72WebsiteClutchKRS
–
Sanddevtoo little client evidence
n/a11-505.0 · 450–99 USD/h2.4M PLN-341K PLNProduction-readiness audits56WebsiteClutchKRS

All companies in the data set, with the same score. Companies without a confirmed office, sole traders, body-leasing firms and product companies are listed but not ranked.

Who is not in the top 10, and why

Paid placements and “serves the city” without an office

On the Clutch city list the first positions are bought with ads (links through ppc.clutch.co) or a “serves” entry. These companies have no office in the city according to KRS or their own site, so they are not ranked here.

None in this city.

Struck off the register or in liquidation

They still show up on other people’s “best of” lists. Here they appear only in the full table.

None in this city.

Body leasing, product companies and other services

Renting people into someone else’s team is a different service from delivering a project. A product company, a marketing agency or an SAP partner does not sell software projects either. They are in the full table with a label.

  • Codewave
  • FINGO (Regnology Software Poland)

On the city’s Clutch list, but based elsewhere

Clutch shows them on this city’s page, but KRS and our data do not confirm an office here. They are ranked in their own city.

None in this city.

Ranked 11th and below

They qualify but score lower. Their full rows are in the table below; the gap between 10th and 15th is often a few points.

  • Sanddev

Too little client evidence, under 10 people, sole traders

Without 5 Clutch reviews or 2M PLN of revenue in a filing there is no fair way to compare a company with the rest. That is a data gap, not a verdict.

None in this city.

What they charge

On Clutch, the companies in this table most often declare 50 to 99 USD an hour. The rate is what the agency bills; the developer on your project is paid less than half of it.

For comparison, my own rate is 36 to 54 USD an hour (45 USD base, pricing). The cost estimator shows what a project like yours costs with and without coding agents.

25-49 USD/h250-99 USD/h11100-149 USD/h0150-199 USD/h0
Rates declared on Clutch, 13 companies with an office in the city. In brackets: companies “serving” the city without an office.

Check any agency yourself in 10 minutes

  1. Ask how they keep the old system running while the new one grows, and how they migrate data. A full rewrite with a big-bang switch is the riskiest plan.
  2. Find the legal entity in the National Court Register: the seat, the share capital and the shareholders. An office here with a seat in another city is a sales office, not a team.
  3. Read the last financial statement on rejestr.io: revenue, profit or loss, and whether it was filed on time.
  4. Check the VAT white list: active, and the name matches the contract.
  5. On the Clutch list hover over the company link; a link through ppc.clutch.co is an ad. Then read the reviews themselves.
  6. On GoWork read the employee reviews, not the stars, and look for layoffs and rotation.
  7. Ask who exactly will work on your project, and check those people on LinkedIn.

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Questions

What are the best legacy modernization software houses in Wrocław in 2027?

By the score on this page: 1. CSHARK (89), 2. Grape Up (81), 3. Accesto (76), 4. Software Mind (74), 5. Genuitek (73). The score adds up transparency in the court register, client reviews on Clutch, profit and stability in the latest filing, specialization and current hiring. The full table shows every company checked.

How much do legacy modernization agencies in Wrocław charge?

Most companies in this table declare 50 to 99 USD an hour on Clutch. My own rate as a senior engineer working with AI agents is 36 to 54 USD an hour.

How do you know a company does legacy modernization?

From at least one of three sources: the service, industry and framework shares on the Clutch profile, the skills in open roles on JustJoin.it, or my own Wrocław catalog. Companies with two or three sources score higher on specialization. The software house finder shows the same tags for every company.

Did any company pay to be on this list?

No. There are no paid placements and no affiliate links. The only business interest is mine: I sell senior engineering as the alternative to an agency.

Can I get my company added or corrected?

Yes. Write to ciunkos@gmail.com with the KRS number and the correction.

How this ranking was made

  • 1,485companies in the data set
  • 708checked in the National Court Register
  • 453with a financial statement
  • 7,436Clutch listing positions read, paid ones marked
  • 451employee review profiles on GoWork
  • 2+months of data collection, since September 2026

The company list comes from a full read of the Clutch city listing (every page, with paid positions marked by their ppc.clutch.co links), the ITCORNER cluster, Google results and job ads. Every company was checked in the National Court Register (KRS) for its seat, legal form, capital and shareholders, in rejestr.io for revenue and profit from the latest filing, on GoWork for employee sentiment, layoff mentions and review clusters, and on the JustJoin.it and No Fluff Jobs boards for open roles and the stack they actually pay for. The 0 to 100 score is five axes with published weights: transparency, client reputation, stability, specialization, activity. A paid Clutch placement does not raise the score.

Disclosures

  • I worked at Sanddev (Wrocław) as the founding engineer of its Sandtime product until November 2026. Sanddev appears in the full table with the same score as everyone else and no editorial favor.
  • As a contractor I have talked with, or applied to, some of the agencies on these lists. None of them knew about this ranking and none of it changed a score.
  • No agency pays for a position, there are no affiliate links, and no company has seen its entry before publication. If any of that changes, the disclosure changes first.
  • My business interest is on every page: I sell senior engineering with AI agents as the alternative to hiring an agency.
  • Written with AI (Claude) from the data set. Every number in the editorial text is checked automatically against the company record or the research notes, and every top entry was read against the company’s own website. Sources and check dates are under each entry.

Spotted an error or want your company added? Write to ciunkos@gmail.com. Full methodology and weights →

Przemysław Zalewski

About the author

Przemysław Zalewski, a senior full-stack engineer in Wrocław with 15+ years of shipping software. I ran this catalog for two months while choosing my own next clients, so every number here was useful to me before it was useful to you. I build with coding agents, work with clients in the US and the UK, and I sell the alternative to the agencies on this list.

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