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Ruby on Rails in Warsaw, ranked for 2027

Best Ruby on Rails software houses in Warsaw

Przemysław Zalewski·Data verified: ·27 min read

Poland has a strong Rails community from the 2010s, and several houses still specialize in it. Ask about upgrades across Rails major versions, because that is where old apps get stuck. I found 43 companies with an office in Warsaw that show Ruby on Rails work in at least one source (42 by their Clutch profile, 1 by their open roles on JustJoin.it), and checked each in the court register, its latest filing and its employee reviews. 38 meet the ranking criteria and the 10 highest scores are below. If one senior engineer is enough, I build SaaS products with AI agents.

In short: The highest-scoring Ruby on Rails software houses in Warsaw for 2027 are Innowise (score 84), Andersen (score 82) and Visuality (score 78). 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)

  • 43companies checked
  • 19verified in KRS
  • 18with a financial statement
  • 17with an employee review profile
  • 1paid or office-less positions excluded

Which company fits your project

  • InnowiseRuby on Rails is 10% of the technology focus on its Clutch profile. Score 84, 4.9 on Clutch from 73 reviews, profit in 2025.
  • AndersenRuby on Rails is 10% of the technology focus on its Clutch profile. Score 82, 4.9 on Clutch from 129 reviews, profit in 2025.
  • VisualityRuby on Rails is 80% of the technology focus on its Clutch profile. Score 78, 5.0 on Clutch from 35 reviews, profit in 2025.
  • Darly SolutionsRuby on Rails is 10% of the technology focus on its Clutch profile. Score 76, 5.0 on Clutch from 34 reviews, profit in 2025.
  • One senior instead of a teamIf the project fits one person with coding agents, hire me for SaaS products 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 Ruby on Rails work; the share on Clutch is what the company declares.

The top 10 at a glance

Click a column to sort.

#CompanyPeopleClutchRateFocusScore
1
Innowiseprofit 3M PLN (2025)GoWork 65/10
1000-99994.9 · 7350–99 USD/hCustom software84
2
Andersenprofit 363K PLN (2025)
1000-99994.9 · 12950–99 USD/hCustom software82
3
Visualityprofit 1.1M PLN (2025)
10-495.0 · 3525–49 USD/hRuby on Rails78
4
Darly Solutionsprofit 321K PLN (2025)
50-2495.0 · 3450–99 USD/hCustom software76
5
Azati Softwareprofit 713K PLN (2025)
250-9994.9 · 1525–49 USD/hAI consulting and LLM76
6
Vilmateprofit 43K PLN (2025)
50-2495.0 · 1150–99 USD/hE-commerce75
7
Freeport Metricsprofit 126K PLN (2025)GoWork 0/11
10-494.8 · 1550–99 USD/hGenerative AI integration74
8
Move Closerprofit 288K PLN (2025)GoWork 3/5
50-2494.9 · 950–99 USD/h73
9
NG Logicprofit 1.5M PLN (2026)foreign-owned
50-2494.7 · 825–49 USD/hAI73
10
ScienceSoftprofit 184K PLN (2025)foreign-owned
250-9994.8 · 4650–99 USD/hAI72

The ranking

The order below is the score from five axes: transparency, client reputation, stability, specialization and activity. Here specialization measures how strong the Ruby on Rails 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.

Innowise

Very large outsourcing and staff augmentation company with a Warsaw headquarters claim and a catalog covering almost every technology.

Clutch: 4.9 (73 reviews)Rate: 50–99 USD/hMin. project: 10,000 USD

Best for: Teams that must add several developers quickly and can manage an outsourced team under their own tech lead.

Pros

  • The Polish company reported 251.2M PLN of revenue and a profit of 3.0M PLN in its 2025 filing.
  • Clutch shows 4.9 from 73 reviews.
  • GoWork employee reviews lean positive, with 65 positive and 10 negative.
  • The site lists ISO 9001, ISO 27001 and ISO 13485.

Cons

  • The margin is thin, with profit at about one percent of revenue.
  • The case studies page names no clients and warns that details may be generalized or modified. The portfolio cannot be checked.
  • The Polish company dates from 2021, while the site claims 2007. The footer gives a registered address in Boston, and the job boards showed no open roles at the last snapshot.

From their website and Clutch profile

  • The about page claims 3,500+ people, 1,600 projects and a founding year of 2007. The Polish company in KRS dates from 2021 (source).
  • The FAQ names Warsaw as headquarters, while the footer gives a registered address in Boston, MA (source).
  • The case studies page names no clients and warns that client details may be generalized or modified (source).
  • Innowise sells staff augmentation openly, promising CVs in 1 to 2 days and a team joining in 3 to 5 days (source).

Clients they name: Hays, Spar, Tietoevry, Topcon, NTT Data, Commercial Bank of Qatar

Custom software developmentStaff augmentation and dedicated teamsTesting and QAData, AI and MLERP and CRMLegacy modernizationAI
Innowise homepage
Homepage of innowise.com, screenshot taken October 28, 2026. Content and marks belong to Innowise.

Verdict. Use Innowise for staff augmentation under your own tech lead when you need CVs fast across many technologies. Skip it when you need a partner whose past work you can verify.

Andersen

Large international outsourcing company headquartered in Warsaw, selling dedicated teams and full-cycle development in 22 industries.

Clutch: 4.9 (129 reviews)Rate: 50–99 USD/hMin. project: 50,000 USDVerified

Best for: Companies that need a large dedicated team fast, across many technologies, and can run it with their own product owner.

Pros

  • Clutch shows 129 reviews with a 4.9 rating and a Verified badge.
  • The Polish company reported 177.1M PLN of revenue in its 2025 filing.
  • Andersen has headquarters in Warsaw and a Kraków development center. Its named work includes Deutsche Telekom and Samsung Electronics.

Cons

  • The margin is near zero, with a profit of 363K PLN on 177.1M PLN of revenue.
  • The Polish company dates from 2019, while the group claims 19 years. Other entities sit in Lithuania and Germany.
  • Our GoWork data has no employee reviews, and the job boards showed no open roles at the last snapshot. The minimum project is 50,000 USD.

From their website and Clutch profile

  • The about page claims 3,500+ in-house experts, 2,000+ clients, 18 offices and 19 years of experience, with Warsaw as headquarters (source).
  • The footer names other legal entities, UAB Andersen Soft and Andersen Germany GmbH, so the Polish company is one of several (source).
  • Many case studies are under NDA, and the named ones include Deutsche Telekom and Samsung Electronics (source).
  • The site announces the Claude Partner Network and AWS MSP partnership (source).

Clients they name: Samsung Electronics, Deutsche Telekom, BNP Paribas, Verivox, TUI

Custom software developmentStaff augmentation and dedicated teamsAI and dataCloud and DevOpsCybersecurityCRM and ERPAI
Andersen homepage
Homepage of andersenlab.com, screenshot taken October 28, 2026. Content and marks belong to Andersen.

Verdict. Use Andersen to scale a team you lead, backed by 129 Clutch reviews. Check who signs the contract, given the thin Polish margin and the multi-entity setup.

Visuality

Warsaw Ruby on Rails agency of 30+ people, also building Next.js and React front ends.

Clutch: 5.0 (35 reviews)Rate: 25–49 USD/hMin. project: 10,000 USD

Best for: Startup or scale-up with a Ruby on Rails product that wants a senior Rails team at published rates.

Pros

  • Publishes hourly rates and MVP price ranges on its pricing page.
  • Profitable in 2025, with 1.1M PLN of profit on 6.8M PLN of revenue.
  • Clutch shows 5.0 from 35 reviews.
  • Runs the Warsaw Ruby Meetup, so its Rails people are visible in the community.

Cons

  • The current company was registered in 2025, so its own filings cover one year.
  • No case study on the site mentions Go.
  • With a team of 30+, a large multi-team program will stretch it.

From their website and Clutch profile

  • The pricing page lists Rails rates from 30 EUR an hour for a junior to 100 EUR for an expert. (source)
  • The pricing page quotes an MVP at 8,000 to 55,000 EUR over 1 to 3 months. (source)
  • The contact page names Visuality sp. z o.o., KRS 0001154778, with an office at Ludna 2 in Warsaw. (source)
  • The about page says the team runs the Warsaw Ruby Meetup and founded the Ruby Warsaw Community Conference. (source)

Clients they name: Fundthrough, ShelfWise, Laterallink, RacesOnline, National Geographic, Kommerso

Ruby on Rails developmentDedicated Rails teamsTeam augmentationProduct developmentNext.js and ReactFractional CTO and AI/MCP consulting

Verdict. Pick Visuality for a Rails product or a Rails rescue at known rates. Look elsewhere for a Go backend.

Darly Solutions

Software company of 100+ engineers building web and mobile products for healthcare, fintech and SaaS startups.

Clutch: 5.0 (34 reviews)Rate: 50–99 USD/hMin. project: 1,000 USDPremier Verified

Best for: Seed and Series A health-tech startups that need a TypeScript web app in Vue.js or Next.js, from MVP onward.

Pros

  • Profitable in 2025, with 321K PLN of profit on 5.4M PLN of revenue.
  • Clutch shows 5.0 from 34 reviews, with a Premier Verified badge.
  • Clutch lists a $1,000 minimum project, so a small audit is possible.
  • Healthcare case studies cover clinical trial data, neuroscanning and clinic networks.

Cons

  • Staff augmentation leads the cooperation models, so expect team rental offers.
  • Most case studies hide the client name.
  • The Polish company dates from 2022, while the site claims work since 2016.

From their website and Clutch profile

  • The about page dates the team to 2016 and claims 100+ engineers. (source)
  • Staff augmentation is the first of three cooperation models on the home page. (source)
  • The home page describes a platform for 108 REVIV clinics in 47 countries. (source)
  • The terms name DARLY SOLUTIONS SP. Z O.O. at the registered Warsaw address. (source)

Clients they name: Feliz & Thriving, REVIV

Custom software developmentWeb development (Vue, React, Next.js)Mobile app developmentUI/UX designQA and testingStaff augmentation and dedicated teamsAI
Darly Solutions homepage
Homepage of darly.solutions, screenshot taken October 28, 2026. Content and marks belong to Darly Solutions.

Verdict. Choose Darly for a health-tech MVP or web product. If you need a long Polish track record, check the 2022 registration first.

Azati Software

AI and custom software engineering firm with offices in Warsaw and Livingston, New Jersey.

Clutch: 4.9 (15 reviews)Rate: 25–49 USD/hMin. project: 10,000 USDVerified

Best for: Insurer, bank or energy company that wants an old system modernized with AI features on top.

Pros

  • Profitable in 2025, with 713K PLN of profit on 15.1M PLN of revenue.
  • Clutch shows 4.9 from 15 reviews, with rates of $25 to $49 an hour.
  • Its portfolio covers a legacy PHP insurance rebuild, SME banking and oilfield analytics.
  • The home page names Shell, Clarivate and Auction.com as clients.

Cons

  • The Polish company was registered in 2022, twenty years after the brand.
  • ISO certification is described as in progress, so ask for the certificate before signing.
  • The service list runs from vibe coding to digital twins, so check who leads your stack.

From their website and Clutch profile

  • The about page says seven ASP.NET and PHP developers founded the company in 2002. (source)
  • The about page names ISO 27001, ISO 27701 and ISO 9001 but describes the accreditation as started in 2026. (source)
  • The home page offers a dedicated center from 8 engineers and staff augmentation from 1 engineer. (source)
  • The Warsaw address on the site, Hoża 86/410, matches the registered address in KRS. (source)

Clients they name: Shell, Clarivate, Auction.com, MedPro Group, DIGATEX

AI consulting and LLM developmentCustom software engineeringLegacy-to-AI modernizationComputer vision and OCRDevOps, MLOps and FinOpsQA and AI testingAI
Azati Software homepage
Homepage of azati.com, screenshot taken October 28, 2026. Content and marks belong to Azati Software.

Verdict. Pick Azati to modernize an insurance, banking or energy system with AI. Look elsewhere for a small web job under its 10,000 USD minimum.

Vilmate

E-commerce software house with Kyiv headquarters and a Warsaw R&D center, working on Shopify, BigCommerce and Salesforce.

Clutch: 5.0 (11 reviews)Rate: 50–99 USD/hMin. project: 25,000 USDVerified

Best for: Online store on Shopify or BigCommerce that needs a rebuild, speed work or a headless front end.

Pros

  • Focuses on Shopify, BigCommerce and Salesforce Commerce Cloud stores.
  • Clutch shows 5.0 from 11 reviews.
  • Claims ISO 27001-certified security on its about page.
  • A BigCommerce case shows 80% of a codebase refactored.

Cons

  • Made only 43K PLN of profit on 10.8M PLN of revenue in 2025.
  • The Polish company dates from 2023, and headquarters sit in Kyiv.
  • The pages I checked show no Ruby on Rails work.

From their website and Clutch profile

  • The about page dates the company to 2012 and places headquarters in Kyiv, with an R&D center in Warsaw. (source)
  • The privacy policy names Vilmate Sp. z o.o. at Hoża 86/410 in Warsaw as data controller. (source)
  • The contact page lists the Warsaw R&D center at Konstruktorska 11 and a sales office in Stockholm. (source)
  • A BigCommerce case reports 80% of the codebase refactored and 90% of backend features rewritten. (source)

Clients they name: Awarebee, Rule, Bannerflow, Jobcast, FundedByMe

E-commerce development (Shopify, BigCommerce, Salesforce Commerce Cloud)Web and PWA developmentMobile app developmentUI/UX designQA and testingAudits (GDPR, accessibility, performance)AI
Vilmate homepage
Homepage of vilmate.com, screenshot taken October 28, 2026. Content and marks belong to Vilmate.

Verdict. Pick Vilmate for a Shopify, BigCommerce or Salesforce Commerce store. Look elsewhere for a Rails backend.

Freeport Metrics

American-owned software firm with a Warsaw team, now focused on generative AI for US clients.

Clutch: 4.8 (15 reviews)Rate: 50–99 USD/hMin. project: 10,000 USD

Best for: Nonprofits and publicly funded US health programs that want a small team to add generative AI to existing software.

Pros

  • Clutch shows 4.8 from 15 reviews.
  • Its portfolio names clients such as Smile Train and Bangor Savings Bank.
  • Publishes Form2agent, an open-source toolset for adding AI to existing apps.
  • Its portfolio tags four US projects as government work.

Cons

  • Thin margin in 2025, with 126K PLN of profit on 5.3M PLN of revenue.
  • GoWork shows 11 negative entries and no positive ones.
  • The site gives no headcount.

From their website and Clutch profile

  • The about page says Andrew Gauvin co-founded the company in 2009 and has been sole owner since 2018 (source).
  • The home page claims 125 projects completed on time and on budget over 15 years (source).
  • The portfolio tags four US projects as government work, including a subsidy system for US medical facilities (source).
  • The about page says the company avoids body leasing and prefers teams with clear goals (source).

Clients they name: Smile Train, Bangor Savings Bank, Community Health Options, Animal Ethics, VoyceMe, Keepler, EVO Payments

Generative AI integrationAI voice agents and document processingRapid prototypingCustom web and mobile developmentProduct design
Freeport Metrics homepage
Homepage of www.freeportmetrics.com, screenshot taken October 28, 2026. Content and marks belong to Freeport Metrics.

Verdict. Choose Freeport Metrics for an AI feature in a US-facing product built by a small team. For Polish public tenders look elsewhere, since its government work is all in the US.

Move Closer

Clutch: 4.9 (9 reviews)Rate: 50–99 USD/hMin. project: 10,000 USD

Pros

  • Profit of 288K PLN (2025)
  • Owned by private individuals (KRS)

Cons

  • Mostly negative employee reviews on GoWork (3 positive, 5 negative)
Move Closer homepage
Homepage of movecloser.co, screenshot taken October 28, 2026. Content and marks belong to Move Closer.

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

NG Logic

Clutch: 4.7 (8 reviews)Rate: 25–49 USD/hMin. project: 25,000 USD

Pros

  • Profit of 1.5M PLN (2026)

Cons

  • Foreign-owned
AI
NG Logic homepage
Homepage of nglogic.com, screenshot taken October 28, 2026. Content and marks belong to NG Logic.

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

ScienceSoft

Clutch: 4.8 (46 reviews)Rate: 50–99 USD/hMin. project: 5,000 USD

Pros

  • Profit of 184K PLN (2025)
  • 4.8 on Clutch from 46 reviews

Cons

  • Foreign-owned
AI
ScienceSoft homepage
Homepage of scnsoft.com, screenshot taken October 28, 2026. Content and marks belong to ScienceSoft.

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

Every company we checked

The table below has the 43 companies with Ruby on Rails evidence in Warsaw, including the ones that do not qualify for the ranking, with the reason. Sort by any column.

Show all 43 companies
Size: Rate: · 43
#CompanyHQ (KRS)PeopleClutchRateRevenueProfitFocusScoreLinks
1
InnowiseCustom software
Warsaw1000-99994.9 · 7350–99 USD/h251.2M PLN3M PLNCustom software84WebsitePortfolioClutchKRS
2
AndersenCustom software
Warsaw1000-99994.9 · 12950–99 USD/h177.1M PLN363K PLNCustom software82WebsitePortfolioClutchKRS
3
VisualityRuby on Rails
Warsaw10-495.0 · 3525–49 USD/h6.8M PLN1.1M PLNRuby on Rails78WebsitePortfolioClutchKRS
4
Darly SolutionsCustom software
Warsaw50-2495.0 · 3450–99 USD/h5.4M PLN321K PLNCustom software76WebsitePortfolioClutchKRS
5
Azati SoftwareAI consulting and LLM
Warsaw250-9994.9 · 1525–49 USD/h15.1M PLN713K PLNAI consulting and LLM76WebsitePortfolioClutchKRS
6
VilmateE-commerce
Warsaw50-2495.0 · 1150–99 USD/h10.8M PLN43K PLNE-commerce75WebsitePortfolioClutchKRS
7
Freeport MetricsGenerative AI integration
Warsaw10-494.8 · 1550–99 USD/h5.3M PLN126K PLNGenerative AI integration74WebsitePortfolioClutchKRS
8
Warsaw50-2494.9 · 950–99 USD/h6.5M PLN288K PLN73WebsiteClutchKRS
9
Warsaw50-2494.7 · 825–49 USD/h16.4M PLN1.5M PLNAI73WebsiteClutchKRS
10
Warsaw250-9994.8 · 4650–99 USD/h6.8M PLN184K PLNAI72WebsiteClutchKRS
–
Itransitiontoo little client evidence
Warsaw1000-99994.9 · 4225–49 USD/h83.4M PLN3.6M PLNERP and Microsoft Dynamics 36585WebsitePortfolioClutchKRS
–
Geniuseetoo little client evidence
Warsaw250-9995.0 · 7125–49 USD/h253K PLNn/aAI68WebsiteClutchKRS
–
YNDtoo little client evidence
Warsaw50-2494.8 · 11100–149 USD/h17.3M PLN-219K PLNAI68WebsiteClutchKRS
–
RTEtoo little client evidence
Warsaw10-495.0 · 11100–149 USD/h0 PLN-700 PLN63WebsiteClutchKRS
–
GP Solutionstoo little client evidence
Łódź250-9994.9 · 2450–99 USD/h1.5M PLN-36K PLNCustom enterprise software61WebsitePortfolioClutchKRS
–
Efigencetoo little client evidence
Warsaw50-2494.8 · 925–49 USD/h29.2M PLN-4.7M PLN59WebsiteClutchKRS
–
DevTalentstoo little client evidence
Warsaw50-2494.8 · 3150–99 USD/hn/a-218K PLN58WebsiteClutchKRS
–
FlairsTechtoo little client evidence
Warsaw1000-99994.6 · 11n/a1.9M PLN-1.2M PLNAI54WebsiteClutchKRS
–
Startup Housetoo little client evidence
n/a50-2494.9 · 2450–99 USD/hn/an/aPython53WebsiteClutch
–
The Codesttoo little client evidence
n/a50-2494.8 · 2750–99 USD/hn/an/aPython50WebsiteClutch
–
iRonin.ITtoo little client evidence
n/a10-494.9 · 3350–99 USD/hn/an/a47WebsiteClutch
–
Rubyroid Labstoo little client evidence
n/a50-2494.9 · 5750–99 USD/hn/an/aAI47WebsiteClutch
–
LLInformaticstoo little client evidence
n/a50-2494.9 · 750–99 USD/hn/an/a46WebsiteClutch
–
Codeshinetoo little client evidence
n/a10-495.0 · 1250–99 USD/hn/an/a45WebsiteClutch
–
EL Passiontoo little client evidence
n/a50-2494.8 · 5850–99 USD/hn/an/aAI45WebsiteClutch
–
Fireart Studiotoo little client evidence
n/a50-2494.9 · 4050–99 USD/hn/an/a45WebsiteClutch
–
Five Jarstoo little client evidence
n/a10-494.9 · 32100–149 USD/hn/an/a45WebsiteClutch
–
Helpware Techtoo little client evidence
n/a250-9994.9 · 3050–99 USD/hn/an/aAI45WebsiteClutch
–
PixelPlextoo little client evidence
n/a50-2494.9 · 3350–99 USD/hn/an/aAI45WebsiteClutch
–
Symfatoo little client evidence
n/a50-2494.9 · 1850–99 USD/hn/an/aAI45WebsiteClutch
–
Atomic Actionstoo little client evidence
n/a10-495.0 · 1350–99 USD/hn/an/aAI44WebsiteClutch
–
Promwadtoo little client evidence
n/a50-2494.8 · 1850–99 USD/hn/an/aAI44WebsiteClutch
–
Quantumtoo little client evidence
n/a50-2495.0 · 1550–99 USD/hn/an/aAI44WebsiteClutch
–
Aligned Codetoo little client evidence
n/a50-2494.9 · 1350–99 USD/hn/an/aAI43WebsiteClutch
–
UASOFTDEVtoo little client evidence
n/a50-2495.0 · 1125–49 USD/hn/an/aAI43WebsiteClutch
–
ApexTechtoo little client evidence
n/a50-2494.8 · 950–99 USD/hn/an/aAI42WebsiteClutch
–
CleverLabstoo little client evidence
n/a10-494.8 · 750–99 USD/hn/an/aAI42WebsiteClutch
–
LAB325too little client evidence
n/a10-495.0 · 825–49 USD/hn/an/aAI42WebsiteClutch
–
8allocatetoo little client evidence
n/a50-2494.7 · 2550–99 USD/hn/an/aAI41WebsiteClutch
–
Code & Peppertoo little client evidence
n/a50-2494.6 · 1350–99 USD/hn/an/a40WebsiteClutch
–
KITRUMstruck off KRS
Warsaw250-9995.0 · 7350–99 USD/h0 PLN-28K PLNAI40WebsiteClutchKRS
–
NVTtoo little client evidence
n/a10-495.0 · 425–49 USD/hn/an/aAI40WebsiteClutch
–
Madifftoo little client evidence
n/a50-2494.9 · 450–99 USD/hn/an/aAI39WebsiteClutch

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.

  • Geniusee (paid)

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.

  • KITRUM

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.

None in this city.

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.

  • YND
  • RTE
  • GP Solutions · Łódź
  • Efigence
  • DevTalents
  • FlairsTech
  • Startup House
  • The Codest
  • iRonin.IT
  • Rubyroid Labs
  • LLInformatics
  • Codeshine
  • and 16 more in the full table

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.

  • Itransition
  • NVT
  • Madiff

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/h950-99 USD/h30100-149 USD/h3150-199 USD/h0
Rates declared on Clutch, 42 companies with an office in the city. In brackets: companies “serving” the city without an office.

Check any agency yourself in 10 minutes

  1. Poland has a strong Rails community from the 2010s, and several houses still specialize in it. Ask about upgrades across Rails major versions, because that is where old apps get stuck.
  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 Ruby on Rails software houses in Warsaw in 2027?

By the score on this page: 1. Innowise (84), 2. Andersen (82), 3. Visuality (78), 4. Darly Solutions (76), 5. Azati Software (76). 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 Ruby on Rails agencies in Warsaw 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 Ruby on Rails?

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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Przemysław Zalewski

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Przemysław Zalewski · 15+ years shipping software

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