ciunkos.com Rankings

React in Łódź, ranked for 2027

Best React software houses in Łódź

Przemysław Zalewski · Data snapshot:

  1. 1 Makimo 70
  2. 2 Polar Night Software 61
  3. 3 Liki 59

8 companies with evidence of React work in Łódź; 6 meet the ranking criteria. Sources: 7 by their Clutch profile, 1 by their open roles on JustJoin.it, KRS records, available financial statements and employee reviews. If one senior engineer is enough, I build React apps with AI agents.

Get matched offers in 24 hours See the top 6 Download the data (CSV)

  • 8 company records
  • 7 with KRS records
  • 5 with a financial statement
  • 5 with an employee review profile
  • 6 ranked

Find your fit

Compare companies

#CompanyPeopleClutchRateFocusScore
1
Makimo profit 66K PLN (2025)
10-495.0 · 1150–99 USD/hReact 30% startups and MVPs70
2
Polar Night Software loss 172K PLN (2024) foreign-owned
10-494.8 · 850–99 USD/hReact 35% startups and MVPs61
3
50-2494.8 · 3450–99 USD/hReact 34% AI strategy and implementation59
4
FiveDotTwelve profit 246K PLN (2025)
10-494.9 · 3850–99 USD/hReact 11% mobile app development56
5
TDCM profit 53K PLN (2026)
10-495.0 · 925–49 USD/hReact 10% startups and MVPs50
6
50-2494.8 · 2150–99 USD/hReact 10% startups and MVPs38

The ranking

Makimo

Łódź software consultancy that offers code health checks, integrations, maintenance and full builds.

70/100

Clutch: 5.0 (11 reviews) Rate: 50–99 USD/h Min. project: 10,000 USD Google: 5.0 (4 reviews)

Best for: Owners of an existing product who need a code health check, integrations or long-term maintenance by senior engineers.

Verdict. Hire Makimo to fix and maintain a product you already run. For a large new build, its small size becomes the limit.

Pros

  • Net profit of 66,000 PLN in 2025 on 3,700,000 PLN revenue. (2026-10-28 · source)
  • Clutch rating of 5/5 from 11 client reviews. (2026-10-28 · source)
  • Published projects: XTB, Tune Therapeutics, Winicjatywa.
  • The contact page lists an office in Łódź. (2026-11-10 · source)
Projects & technologies

Source observations

  • makimo.pl redirects to makimo.com, and the Łódź address appears only in the privacy policy (source).
  • Makimo sells its services as named packages, such as a health check and a care plan (source).
  • Makimo is an AWS Select Tier partner and a SoDA member (source).
  • The listed broker XTB appears as a named case study (source).
  • The site publishes a price for its mid-tier code audit: MHC Lite costs USD 10,000, the self-assessment is free (source)
  • Named clients and testimonials include XTB, Tune Therapeutics and UNAIDS, for which it maintains Global AIDS Monitoring tools (source)
  • The makimo.pl domain redirects to makimo.com and the site is English only (source)

Clients they name: XTB, Tune Therapeutics, Vanderbilt University, Winicjatywa, MISZBUD

Codebase health check Integrations Maintenance and reliability End-to-end development Advisory Team mentoring
Makimo homepage
Homepage of makimo.com, screenshot taken October 28, 2026. Content and marks belong to Makimo.
Facts from the registers
In KRS since
2014
HQ (KRS)
Łódź
Legal form
sp. z o.o.
Share capital
6K PLN
Owners
3 shareholders (individuals)
Revenue
3.7M PLN (2025)
Profit
66K PLN (2025)
Team size (Clutch)
10-49
Google Business Profile
Makimo · 5.0 (4 reviews) (November 10, 2026)
Employee reviews (GoWork)
too few (0/0)

Score: 70/100

Transparency 5.0/5 Client reputation 3.9/5 Stability 4.3/5 Specialization 3.0/5 Activity 2.5/5 Hiring 0.0/5

Website Portfolio Clutch KRS LinkedIn GoWork

Sources (14) · Checked October 28, 2026

Polar Night Software

Finnish-Polish software company with senior teams in Łódź that builds healthcare, data and custom platforms for Nordic clients.

61/100

Clutch: 4.8 (8 reviews) Rate: 50–99 USD/h Min. project: 10,000 USD Google: 5.0 (2 reviews)

Best for: Nordic and healthcare companies that want a small senior team for a MedTech, data or custom platform project.

Verdict. Choose Polar Night Software for Nordic or healthcare work with a small senior team. Ask for financials newer than 2024 first, because that year closed with a loss.

Pros

  • Clutch rating of 4.8/5 from 8 client reviews. (2026-10-28 · source)
  • Published projects: Medixine, Renta, Efecte.
  • Polish legal entity record available in KRS: 0000830394. (2026-10-28 · source)

Cons

  • Net loss of 171,800 PLN in 2024 on 5,100,000 PLN revenue. (2026-10-28 · source)
  • The Clutch snapshot contains 8 reviews; request references for a comparable project. (2026-10-28 · source)
Projects & technologies

Source observations

  • The company page describes a Finnish-Polish firm founded in 2020 whose CEO has 16 years of experience at Nordcloud, Reaktor and Efecte (source).
  • The team includes a healthcare market and compliance advisor, in line with the MedTech focus (source).
  • Most named case studies are for Finnish companies such as Medixine, Renta and Efecte (source).
  • Clutch lists 4.8 from 8 reviews, a 10,000 USD minimum and 16 to 20 employees at the Łódź headquarters (source).

Clients they name: Medixine, Renta, Efecte, Robu, GroundHawk, FleetGuru

Healthcare and MedTech software Data and AI Full-stack web and mobile development DevOps and cloud Audits, migrations and AI prototyping sprints Team extension AI
Polar Night Software homepage
Homepage of www.polarnightsoftware.com, screenshot taken October 28, 2026. Content and marks belong to Polar Night Software.
Facts from the registers
In KRS since
2020
HQ (KRS)
Łódź
Legal form
sp. z o.o.
Share capital
11K PLN
Owners
Ponnista Oy; 1 shareholder (individual)
Revenue
5.1M PLN (2024)
Loss
172K PLN (2024)
Team size (Clutch)
10-49
The Org
org chart: 14 positions, 10-50 employees
Google Business Profile
Polar Night Software sp. z o.o. · 5.0 (2 reviews) (November 10, 2026)
Employee reviews (GoWork)
too few (0/0)

Score: 61/100

Transparency 5.0/5 Client reputation 3.2/5 Stability 1.8/5 Specialization 3.5/5 Activity 2.5/5 Hiring 0.0/5

Website Portfolio Clutch KRS LinkedIn GoWork

Sources (10) · Checked October 28, 2026

Liki

Software house building web, mobile, IoT and embedded software and agentic AI products, with its own AI products and AI courses.

59/100

Clutch: 4.8 (34 reviews) Rate: 50–99 USD/h Min. project: 10,000 USD Google: 4.9 (15 reviews)

Verdict. Strongest on hiring and client reputation. Weakest axis: stability (2.0/5).

Pros

Cons

  • This record has no linked financial statement; this is a coverage gap, not evidence that no filing exists.
Projects & technologies

Source observations

  • The site claims 70+ talents, 130+ projects and 11+ years on the market; the first office opened in 2013 (source)
  • Beyond client work it sells its own AI products: the Ludwik.ai kiosk, a RealWear smart-glasses assistant and a metering system used in Łódź schools (source)
  • Frontend work is presented under a Frontend House sub-brand and IoT under IoToak (source)
  • Case studies include a My Orange telecom app and the Knowde chemicals marketplace (source)

Clients they name: Orange, Knowde, Epicurean Butter, TV Toya, Novimed, Famur, EC1 Łódź (Centre for Comics and Interactive Narration), Dailab, AIA Concept, Sonnar Interactive, GG Tech, Vantage International LLC

Software Development Web Application Development Headless CMS and WordPress Development UX/UI Design and UX Audit Product Design Frontend and Backend Services IoT Services Embedded Development Outsourcing Software Development Agentic AI Development
Facts from the registers
In KRS since
2015
HQ (KRS)
Łódź
Legal form
sp.k.
Team size (Clutch)
50-249
Google Business Profile
Liki · 4.9 (15 reviews) (November 11, 2026)
Hiring (last 90 days)
5 engineering roles open (seen November 10, 2026)

Score: 59/100

Transparency 2.5/5 Client reputation 3.5/5 Stability 2.0/5 Specialization 3.4/5 Activity 2.5/5 Hiring 4.0/5

Website Portfolio Clutch KRS LinkedIn

Sources (14) · Checked November 13, 2026

FiveDotTwelve

Łódź mobile studio that builds Flutter and FlutterFlow apps, from MVPs to IoT and fitness products.

56/100

Clutch: 4.9 (38 reviews) Rate: 50–99 USD/h Min. project: 25,000 USD Google: 5.0 (24 reviews)

Best for: Startups and brands that want a Flutter or FlutterFlow mobile app taken from MVP to launch.

Verdict. Call FiveDotTwelve first for a Flutter app in Poland. For native iOS or a complex backend, add another partner or look elsewhere.

Pros

  • Net profit of 245,900 PLN in 2025 on 6,900,000 PLN revenue. (2026-10-28 · source)
  • Clutch rating of 4.9/5 from 38 client reviews. (2026-10-28 · source)
  • Published projects: VRWorkout, Squaddy.

Cons

  • Declared minimum project: 25,000 USD; compare this entry budget with your scope. (2026-10-28 · source)
Projects & technologies

Source observations

  • The about page claims 20+ people and 125+ projects (source).
  • Flutter's site has listed FiveDotTwelve as a recommended consultant since 2023 (source).
  • More than 30 named clients give testimonials, from startups to Knauf and Autenti (source).
  • The company ships its own habit tracker app, Habitive (source).

Clients they name: VRWorkout, Squaddy, Knauf, Autenti, Skra Bełchatów, Widzew

Flutter app development FlutterFlow development MVP development UI/UX design and audits IoT apps Web backend and frontend AI
FiveDotTwelve homepage
Homepage of fivedottwelve.com, screenshot taken October 28, 2026. Content and marks belong to FiveDotTwelve.
Facts from the registers
In KRS since
2015
HQ (KRS)
Łódź
Legal form
sp. z o.o.
Share capital
6K PLN
Owners
1 shareholder (individual)
Revenue
6.9M PLN (2025)
Profit
246K PLN (2025)
Team size (Clutch)
10-49
The Org
org chart: 16 positions, 10-50 employees
Google Business Profile
FiveDotTwelve · 5.0 (24 reviews) (November 10, 2026)
Employee reviews (GoWork)
too few (0/0)

Score: 56/100

Transparency 5.0/5 Client reputation 3.8/5 Stability 4.3/5 Specialization 1.1/5 Activity 2.5/5 Hiring 0.0/5

Website Portfolio Clutch KRS LinkedIn GoWork

Sources (11) · Checked October 28, 2026

TDCM

Łódź team-extension agency that builds web and mobile apps, mostly for small clients in the US, UK and Europe.

50/100

Clutch: 5.0 (9 reviews) Rate: 25–49 USD/h Min. project: 10,000 USD Google: 5.0 (1 review)

Best for: Small foreign startups that want to add low-rate Ruby on Rails or React Native developers from Łódź to their team.

Verdict. Use TDCM for low-cost extra developers, after confirming which legal entity invoices you and who employs the developers. Do not hand it a whole product.

Pros

  • Net profit of 52,800 PLN in 2026 on 207,300 PLN revenue. (2026-10-28 · source)
  • Clutch rating of 5/5 from 9 client reviews. (2026-10-28 · source)
  • Published projects: Sea Service, Nazca Health, Wattcrowd.
  • The contact page lists an office in Łódź. (2026-10-28 · source)

Cons

  • The Clutch snapshot contains 9 reviews; request references for a comparable project. (2026-10-28 · source)

Discrepancy: company website: 21+ people, but the Polish entity had 207K PLN revenue (2026); the team most likely sits in another entity

Projects & technologies

Source observations

  • The team page names 21 people (source).
  • The about page describes an extended team model in which developers join the client's team as staff augmentation (source).
  • The only phone number on the contact page is a US number, next to a Łódź address (source).
  • Clutch gives 2011 as the founding year, 5.0 from 9 reviews, 25 to 49 USD per hour and 21 to 30 employees in Łódź (source).
  • Company lists five core values on its team page (source)

Clients they name: Sea Service, Forté Music, Reinvigoration (OpX), Nazca Health, Wattcrowd

Web apps (Ruby on Rails) Mobile apps (React Native) DevOps APIs Internet of Things Machine learning
TDCM homepage
Homepage of www.tdcm.io, screenshot taken October 28, 2026. Content and marks belong to TDCM.
Facts from the registers
In KRS since
2022
HQ (KRS)
Łódź
Legal form
sp. z o.o.
Share capital
5K PLN
Owners
4 shareholders (individuals)
Revenue
207K PLN (2026)
Profit
53K PLN (2026)
Team size (Clutch)
10-49
Google Business Profile
TDCM · 5.0 (1 review) (November 10, 2026)
Employee reviews (GoWork)
too few (0/0)
Discrepancy
company website: 21+ people, but the Polish entity had 207K PLN revenue (2026); the team most likely sits in another entity

Score: 50/100

Transparency 5.0/5 Client reputation 3.5/5 Stability 3.0/5 Specialization 1.0/5 Activity 2.5/5 Hiring 0.0/5

Website Portfolio Clutch KRS LinkedIn GoWork

Sources (13) · Checked October 28, 2026

Ragnarson

Łódź software company that builds MVPs and web products for startups and also invests in pre-seed and seed climate tech startups.

38/100

Clutch: 4.8 (21 reviews) Rate: 50–99 USD/h Min. project: 5,000 USD Google: 4.2 (5 reviews)

Best for: Early-stage startups, especially in climate tech, that want an MVP or web product built on AWS by a long-running Łódź team.

Verdict. Take Ragnarson for a startup MVP, especially in climate tech, where an experienced small team and a low entry budget matter. Skip it if you need a large team or proof of recent delivery volume.

Pros

  • Clutch rating of 4.8/5 from 21 client reviews. (2026-10-28 · source)
  • Published projects: BookingSync, Certace, Ecotab.
  • Polish legal entity record available in KRS: 0000543467. (2026-11-13 · source)

Cons

  • This record has no linked financial statement; this is a coverage gap, not evidence that no filing exists.
Projects & technologies

Source observations

  • The home page says the company invests in pre-seed and seed climate tech startups and builds their MVPs, and claims a 15-year track record (source).
  • The site says its customers raised over €254M in funding and made five exits, and that it has built software for over fifty companies (source).
  • Case studies include an AWS-based automated infrastructure and a rental management system with a public API for BookingSync, and a cloud PaaS for Ruby applications for Shellycloud (source).
  • The footer names Ragnarson Sp. z o.o. Sp. K., KRS 0000543467, ul. Targowa 35, Łódź, and shows a 2021 copyright line (source).
  • Clutch shows 4.8 from 21 reviews, founded 2006, a $5,000 minimum and $50 to $99 per hour; the latest review is from January 2025 and some reviewers ask for better time and cost estimates (source).

Clients they name: BookingSync, Certace, Ecotab, Shellycloud, Euromaster

Web development Mobile development Cloud strategy and DevOps MVP development Product design and development Advisory on hiring and remote teams Startup investments (Ragnarson Fund)
Facts from the registers
In KRS since
2015
HQ (KRS)
Łódź
Legal form
sp.k.
Team size (Clutch)
50-249
The Org
org chart: 18 positions, 10-50 employees
Google Business Profile
Ragnarson · 4.2 (5 reviews) (November 11, 2026)
Hiring (last 90 days)
role seen October 30, 2026

Score: 38/100

Transparency 2.8/5 Client reputation 3.0/5 Stability 2.0/5 Specialization 1.0/5 Activity 2.5/5 Hiring 1.0/5

Website Portfolio Clutch KRS LinkedIn

Sources (6) · Checked November 13, 2026

All companies

Show all 8 companies
Size: Rate: · 8
#CompanyHQ (KRS)PeopleClutchRateRevenueProfitFocusScoreLinks
1
Makimo React 30% startups and MVPs
Łódź10-495.0 · 1150–99 USD/h3.7M PLN66K PLNReact 30% startups and MVPs70Website Portfolio Clutch KRS
2
Polar Night Software React 35% startups and MVPs
Łódź10-494.8 · 850–99 USD/h5.1M PLN-172K PLNReact 35% startups and MVPs61Website Portfolio Clutch KRS
3
Liki React 34% AI strategy and implementation
Łódź50-2494.8 · 3450–99 USD/hn/an/aReact 34% AI strategy and implementation59Website Portfolio Clutch KRS
4
FiveDotTwelve React 11% mobile app development
Łódź10-494.9 · 3850–99 USD/h6.9M PLN246K PLNReact 11% mobile app development56Website Portfolio Clutch KRS
5
TDCM React 10% startups and MVPs
Łódź10-495.0 · 925–49 USD/h207K PLN53K PLNReact 10% startups and MVPs50Website Portfolio Clutch KRS
6
Ragnarson React 10% startups and MVPs
Łódź50-2494.8 · 2150–99 USD/hn/an/aReact 10% startups and MVPs38Website Portfolio Clutch KRS
–
Happy Team body leasing
Łódź50-2495.0 · 650–99 USD/h22.1M PLN101K PLNReact: 2 roles DevOps and cloud70Website Clutch KRS
–
Adexin too little client evidence
Philadelphia10-494.9 · 2850–99 USD/hn/an/aReact 30% logistics47Website Portfolio Clutch

Who is not in the top 6, and why

Body leasing, product companies and other services 1

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.

  • Happy Team

Weak evidence for React 1

They meet the data criteria, but the topic rests on a small Clutch share, a few job ads or a single source. They may do it; the data just does not show it.

  • Adexin · Philadelphia

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/h 1
50-99 USD/h 7
100-149 USD/h 0
150-199 USD/h 0
Rates declared on Clutch, 8 companies with an office in the city.

Check any agency yourself in 10 minutes

  1. Ask which React version and framework the team ships today and who owns the design system. A team that only lists React next to ten other frameworks usually staffs whoever is free.
  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 in the Financial Documents Repository (free, by KRS number): 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 React software houses in Łódź in 2027?

By the score on this page: 1. Makimo (70), 2. Polar Night Software (61), 3. Liki (59), 4. FiveDotTwelve (56), 5. TDCM (50). 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 in the data set.

How much do React agencies in Łódź 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 React?

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 the Wrocław company 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

  • 1,420 companies in the data set
  • 1,116 with KRS records
  • 1,035 with a financial statement
  • 7,436 Clutch listing records
  • 864 employee review profiles on GoWork

Sources: Clutch profiles and listings, KRS records, available financial statements from rejestr.io and the Financial Documents Repository, GoWork reviews, JustJoin.it and No Fluff Jobs listings, and the Wrocław company catalog. Coverage varies by company; dates and links accompany the available records. The 0 to 100 score combines six axes: transparency, client reputation, stability, specialization, activity and hiring in the last 90 days. Paid Clutch placements do not increase the score.

Disclosures

  • Until November 2026 I work at Sanddev (Wrocław) as the founding engineer of its Sandtime product. Sanddev appears in the full table with the same score as everyone else and no editorial favor.
  • No agency pays for a position, there are no affiliate links. 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, source links and dates accompany the available company records.

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 build with coding agents, work with clients in the US and the UK, and I sell the alternative to the agencies on this list.

LinkedIn · X · GitHub · Hire me · Pricing

Best software houses in Łódź 10 agencies ranked by registers, filings and reviews, out of 29 checked. Best React development companies in Poland 10 companies ranked out of 451 with React evidence in Poland. Best React software houses in Wrocław 10 companies ranked out of 118 with React evidence in Wrocław. Best React software houses in Warsaw 10 companies ranked out of 153 with React evidence in Warsaw. Best React software houses in Kraków 10 companies ranked out of 69 with React evidence in Kraków. Best React software houses in Poznań 10 companies ranked out of 20 with React evidence in Poznań. Best React software houses in Gdańsk and the Tricity 10 companies ranked out of 20 with React evidence in Gdańsk and the Tricity. Best LLM and generative AI software houses in Łódź 5 companies ranked out of 8 with LLM and generative AI evidence in Łódź. Best AWS software houses in Łódź 6 companies ranked out of 7 with AWS evidence in Łódź. Best iOS and Swift software houses in Łódź 5 companies ranked out of 5 with iOS and Swift evidence in Łódź.
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