Best Kotlin software houses in Warsaw

Which company fits your project

• N7 MobileKotlin is 20% of the technology focus on its Clutch profile. Score 87, 5.0 on Clutch from 10 reviews, profit in 2025.
• InnowiseKotlin is 12% of the technology focus on its Clutch profile. Score 84, 4.9 on Clutch from 73 reviews, profit in 2025.
• itCraftKotlin is 40% of the technology focus on its Clutch profile. Score 84, 5.0 on Clutch from 71 reviews, profit in 2025.
• BlueSoftKotlin is 2% of the technology focus on its Clutch profile. 4 open roles with Kotlin in the requirements. Score 84, 4.8 on Clutch from 13 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 Kotlin work; the share on Clutch is what the company declares.

The top 10 at a glance

Click a column to sort.

#	Company	People	Clutch	Rate	Focus	Score
1	N7 Mobileprofit 576K PLN (2025)foreign-owned	10-49	5.0 · 10	25–49 USD/h	Mobile apps	87
2	Innowiseprofit 3M PLN (2025)GoWork 65/10	1000-9999	4.9 · 73	50–99 USD/h	Custom software	84
3	itCraftprofit 1.1M PLN (2025)GoWork 24/8	50-249	5.0 · 71	50–99 USD/h	Product discovery	84
4	BlueSoftprofit 43.8M PLN (2025)GoWork 13/39	1000-9999	4.8 · 13	50–99 USD/h	Custom software	84
5	LeanCodeprofit 1.5M PLN (2025)	50-249	5.0 · 40	50–99 USD/h	Flutter mobile app	82
6	GL GLOBALDEVprofit 31K PLN (2025)foreign-owned	250-999	4.9 · 116	25–49 USD/h	Team extension	80
7	Evojamprofit 95K PLN (2025)GoWork 6/1	10-49	4.9 · 12	50–99 USD/h	Custom software	79
8	RE Relevant Softwareprofit 608K PLN (2025)	50-249	4.9 · 32	50–99 USD/h	Full-cycle software	77
9	SolveItprofit 156K PLN (2025)	50-249	5.0 · 53	25–49 USD/h	Discovery phase	76
10	SE SENLAprofit 1.7M PLN (2025)	250-999	4.9 · 19	25–49 USD/h	Staff augmentation	75

The ranking

1

N7 Mobile

Warsaw mobile and OTT software house behind the PLAY NOW TV apps, with AI testing and satellite software spin-offs.

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

Best for: Telecom, media and OTT companies that need mobile, TV or set-top-box apps and want prices on paper before the first call.

Pros

• N7 Mobile publishes monthly team prices on its site, from 15,000 PLN for design to 200,000 PLN for advanced apps.
• N7 Mobile built the PLAY NOW TV apps for the PLAY operator. Its Clutch reviews come from P4, Polkomtel and TU Europa.
• N7 Mobile reported a profit of 576K PLN on 13.7M PLN of revenue in 2025.
• Clutch shows a 5.0 rating from 10 reviews, and the company has been active since 2011.

Cons

• Ownership is partly foreign, with Werealize.com Investments Limited next to 3 individuals in KRS.
• Employee reviews lean negative (2 positive, 4 negative).
• The site has only one full case study, and the other client logos come without project details.

From their website and Clutch profile

• N7 Mobile publishes monthly team prices, from 15,000 PLN for product design to 200,000 PLN for advanced apps (source).
• The site has only one full case study, PLAY NOW for the PLAY operator, and shows the other clients as logos without project details (source).
• N7 Mobile sells body leasing and team leasing next to fixed-price projects (source).
• The company runs N7 Space, which writes satellite on-board software for ESA missions, and Tapioka.ai for UI testing (source).

Clients they name: PLAY, Orange, T-Mobile, Plus, Roche, Agora

Mobile appsOTT and set-top-box appsServer and cloud systemsIoT integrationsProduct designAI solutionsPythonDjangoMachine learningAI

Verdict. Pick N7 Mobile for OTT and mobile work, where it has the clearest pricing on this list and operator-scale telecom projects. For a small web MVP, its team prices start high.

2

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

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.

3

itCraft

Warsaw software house that builds mobile, web and back-end apps and grew up on healthcare projects.

Clutch: 5.0 (71 reviews)Rate: 50–99 USD/hMin. project: 25,000 USDPremier Verified

Best for: Healthcare and retail companies that need a mobile app built and maintained by an ISO-certified team with named references.

Pros

• Profitable in the filings we checked, with a 2025 profit of 1.1M PLN on 19.5M PLN of revenue.
• Holds 71 Clutch reviews with a 5.0 average and Premier Verified status, one of the longest review records in this group.
• The home page shows ISO 9001, ISO 27001 and ISO 13485, and ISO 13485 covers medical device software.
• Its own site names large clients such as Grupa Luxmed, Rossmann and Inter Cars.

Cons

• Employee reviews on GoWork mention layoffs 7 times, and the last snapshot showed zero open roles.
• Clutch gives 2010 as the founding year, the site claims 12 years on the market, and KRS registered the current company in 2020.
• The 25,000 USD Clutch minimum rules out small first projects.

From their website and Clutch profile

• The about page claims 100+ experts, 350+ delivered projects and 12 years on the market (source).
• The home page shows ISO 9001, ISO 13485 and ISO 27001 logos, and the medical device standard matches its healthcare focus (source).
• Clutch gives 2010 as the founding year and seven locations, while KRS registered the current company in 2020 and the site lists Warsaw only (source).
• Clutch shows 5.0 from 71 reviews, 50 to 99 USD per hour and a 25,000 USD minimum (source).

Clients they name: Grupa Luxmed, Rossmann, Inter Cars, Sodexo, Roche, DHL

Product discoveryUX/UI designMobile development (iOS, Android, Flutter)Web and back-end developmentSupport and maintenance teamManaged teams and staff augmentation

Verdict. Take itCraft for a regulated healthcare app that needs ISO 13485 and named references. Skip it for a small MVP below its 25,000 USD minimum.

4

BlueSoft

Warsaw enterprise integrator owned by Orange Polska, focused on data, integration, cloud and AI for banks, telecom and retail.

Clutch: 4.8 (13 reviews)Rate: 50–99 USD/hMin. project: 50,000 USD

Best for: Banks, telecoms and large retailers that need integration, data platforms or managed services from a vendor with a corporate owner.

Pros

• BlueSoft reported 300.9M PLN of revenue and a profit of 43.8M PLN in 2025.
• Orange Polska has owned BlueSoft since 2019, which helps with procurement and continuity.
• Named case studies cover Canal+, Biedronka, GATX and Hellenic Cables. Clutch shows 4.8 from 13 reviews.
• The job boards showed 72 open roles at the last snapshot.

Cons

• GoWork employee reviews are negative (13 positive, 39 negative), with 2 mentions of layoffs.
• The minimum project is 50,000 USD and the processes are enterprise-grade, so an MVP is a poor fit.
• Many case studies are for Orange companies, the owner, so outside references are fewer than they look.

From their website and Clutch profile

• BlueSoft has belonged to the Orange Polska group since 2019, together with Craftware and Essembli (source).
• Several case studies are for Orange companies, the owner, next to clients such as Canal+, Biedronka and GATX (source).
• The site claims 1000+ experts and 200+ active clients and says it is hiring 118 people (source).
• The site shows partner logos for AWS, Microsoft, Google, MuleSoft, Salesforce and Databricks (source).

Clients they name: Orange Polska, Canal+, Biedronka, GATX, Hellenic Cables, Raiffeisen Bank

Custom software developmentData platforms and BISystem integration (MuleSoft)Cloud migrationAI agents and document processingManaged servicesJavaPythonTerraformPostgreSQL

Verdict. Pick BlueSoft for corporate integration, data and managed services backed by a telecom group. For a startup or a single small product, it is too heavy.

5

LeanCode

Warsaw Flutter specialist that builds mobile apps for banks and large brands and created the Patrol testing framework.

Clutch: 5.0 (40 reviews)Rate: 50–99 USD/hMin. project: 25,000 USDPremier Verified

Best for: Banks and large brands that have chosen Flutter and want the team behind Patrol, an open source Flutter testing tool.

Pros

• Profitable in the filings we checked, with a 2025 profit of 1.5M PLN on 22.1M PLN of revenue.
• Its open source Flutter testing framework, Patrol, is public work anyone can inspect. Two Google Developer Experts work on the team.
• The site names Credit Agricole Bank Polska as a banking reference, plus Wedel and Maspex.
• Holds 40 Clutch reviews with a 5.0 average, including reviewers from Google and Credit Agricole.

Cons

• Clutch puts 80% of its work in mobile, so the team specializes in Flutter apps.
• The 25,000 USD Clutch minimum and the enterprise focus rule out very small budgets.
• The last JustJoin snapshot showed zero open roles, and 28 GoWork entries are too few to judge it as an employer.

From their website and Clutch profile

• The home page claims 80+ experts, 40+ dedicated Flutter developers and 100+ delivered products (source).
• The about page gives 2016 as the founding year and lists Patrol, its open source Flutter testing framework launched in 2022 (source).
• Google lists LeanCode as an official Flutter consultant, and two of its engineers are Google Developer Experts (source).
• Clutch shows 5.0 from 40 reviews and 80% mobile work, with reviewers from Google, Credit Agricole and Maspex (source).

Clients they name: Credit Agricole Bank Polska, Wedel, Maspex, Shell, Virgin Money, Millennium

Flutter mobile app developmentWeb and custom software (.NET, React)Scoping and design thinking workshopsMobile app auditsAutomated UI testing with PatrolFlutter training

Verdict. Pick LeanCode when your app is in Flutter and you need enterprise process. Without a Flutter commitment, a broader product team fits better.

6

GLGLOBALDEV

Globaldev Group sells AI-first engineering teams, team extension and AI consulting from hubs across Europe.

Clutch: 4.9 (116 reviews)Rate: 25–49 USD/hMin. project: 50,000 USDPremier Verified

Best for: Product company that wants to add AI-focused engineers to its own team for months.

Pros

• Clutch shows 4.9 from 116 reviews at $25–49 per hour.
• The group claims 450+ in-house experts across 6 hubs in Europe.
• Offers Claude implementation and AI readiness consulting next to engineering.

Cons

• Mainly staffing, with team extension listed first and recruitment and HR management inside the service.
• The Polish company earned 2.4M PLN in 2025 with 31K PLN of profit, so most of the group works elsewhere.
• The site gives no Polish address, and the Clutch minimum project is $50,000.

From their website and Clutch profile

• The about page claims 450+ in-house experts, 6 development hubs across Europe and 15 years in the market (source).
• The contact page lists phone numbers for Israel, Europe and the USA and no Polish address (source).
• The Global Teams service covers recruitment, onboarding, HR and account management for extension teams (source).
• The home page presents Globaldev as a Claude certified services partner (source).

Clients they name: ECIT, SAKANI

Team extensionCustom software developmentAI consulting and Claude implementationGenAI and AI developmentData analytics and data annotationCloud migration and DevOpsAI

Verdict. Pick Globaldev to extend your team with AI-focused engineers at a mid-market rate. Skip it if you want a Polish team you can visit.

8

RERelevant Software

Software development and consulting firm from Lviv with a Warsaw office, building custom platforms, IoT and AI products.

Clutch: 4.9 (32 reviews)Rate: 50–99 USD/hMin. project: 50,000 USD

Best for: Healthcare or energy company that needs an IoT or AI product built by a dedicated team over several months.

Pros

• Names Volkswagen, Össur, Norwegian and AstraZeneca in its case studies.
• Covers IoT, AI and HIPAA compliance work in one firm.
• Profitable in 2025, with 608K PLN of profit on 14.3M PLN of revenue.
• Clutch shows 4.9 from 32 reviews.

Cons

• Clutch puts staff augmentation at 10% of its work, and dedicated teams are a core offer.
• Engagements start at three months on time and materials.
• The pages I checked show no Rust or Go case study.

From their website and Clutch profile

• The home page lists the Warsaw office at Jana Dantyszka 18, the same address as in KRS. (source)
• The home page claims 100+ in-house experts and 246 delivered projects. (source)
• The home page sets a minimum commitment of 3 months on time-and-materials terms. (source)
• The footer copyright names Relevant Software LLC. (source)

Clients they name: Volkswagen, Össur, Norwegian, AstraZeneca, FirstHomeCoach

Full-cycle software developmentDedicated development teamsAI and machine learningIoT development and consultingData and BISecurity and compliance (HIPAA, penetration testing)AI

Verdict. Pick Relevant for an IoT or healthcare product with a multi-month budget. Skip it for a short fixed-price job.

9

SolveIt

Mobile and web app studio with Warsaw, San Francisco and Stockholm addresses, built around MVPs.

Clutch: 5.0 (53 reviews)Rate: 25–49 USD/hMin. project: 10,000 USDPremier Verified

Best for: Startups building a mobile-first MVP for e-commerce, real estate or a marketplace, with UX/UI design included.

Pros

• Clutch shows 5.0 from 53 reviews and a Premier Verified badge.
• Clutch rates of 25 to 49 USD per hour sit at the low end of the market.
• The portfolio shows a shipped real estate rental app.
• Discovery and UX/UI design come before any code.

Cons

• Profit was thin in 2025, 156K PLN on 6.8M PLN of revenue.
• The footer names SolveIt Inc., so confirm which entity signs the contract.
• Outstaffing sits next to project work, so ask whether you get a team or rented developers.

From their website and Clutch profile

• The about page says the team has worked since 2016 and has 50+ in-house professionals. (source)
• The footer names SolveIt Inc. and shows no Polish legal entity. (source)
• The portfolio includes a real estate rental app and an RV travel app. (source)
• The home page promises an MVP within 3 months and specialists within 3+ days. (source)

Clients they name: Out Co., Hemie, DentMe, Gumb, Baibe Bytes AB

Discovery phaseUI/UX designMobile app development (iOS, Android, Flutter)Web app developmentMVP developmentDedicated teams and outstaffing

Verdict. Choose SolveIt for a mobile MVP on a modest budget. For a complex back-office system, ask for matching references first.

Every company we checked

The table below has the 54 companies with Kotlin evidence in Warsaw, including the ones that do not qualify for the ranking, with the reason. Sort by any column.

Show all 54 companies

Size:10-4950-249250-9991000-9999 Rate:25-49 USD50-99 USD100-149 USD150-199 USD · 54

#	Company	HQ (KRS)	People	Clutch	Rate	Revenue	Profit	Focus	Score	Links
1	N7 MobileMobile apps	Warsaw	10-49	5.0 · 10	25–49 USD/h	13.7M PLN	576K PLN	Mobile apps	87	WebsitePortfolioClutchKRS
2	InnowiseCustom software	Warsaw	1000-9999	4.9 · 73	50–99 USD/h	251.2M PLN	3M PLN	Custom software	84	WebsitePortfolioClutchKRS
3	itCraftProduct discovery	Warsaw	50-249	5.0 · 71	50–99 USD/h	19.5M PLN	1.1M PLN	Product discovery	84	WebsitePortfolioClutchKRS
4	BlueSoftCustom software	Warsaw	1000-9999	4.8 · 13	50–99 USD/h	300.9M PLN	43.8M PLN	Custom software	84	WebsitePortfolioClutchKRS
5	LeanCodeFlutter mobile app	Warsaw	50-249	5.0 · 40	50–99 USD/h	22.1M PLN	1.5M PLN	Flutter mobile app	82	WebsitePortfolioClutchKRS
6	GL GLOBALDEVTeam extension	Warsaw	250-999	4.9 · 116	25–49 USD/h	2.4M PLN	31K PLN	Team extension	80	WebsitePortfolioClutchKRS
7	EvojamCustom software	Warsaw	10-49	4.9 · 12	50–99 USD/h	5.3M PLN	95K PLN	Custom software	79	WebsitePortfolioClutchKRS
8	RE Relevant SoftwareFull-cycle software	Warsaw	50-249	4.9 · 32	50–99 USD/h	14.3M PLN	608K PLN	Full-cycle software	77	WebsitePortfolioClutchKRS
9	SolveItDiscovery phase	Warsaw	50-249	5.0 · 53	25–49 USD/h	6.8M PLN	156K PLN	Discovery phase	76	WebsitePortfolioClutchKRS
10	SE SENLAStaff augmentation	Warsaw	250-999	4.9 · 19	25–49 USD/h	25.8M PLN	1.7M PLN	Staff augmentation	75	WebsitePortfolioClutchKRS
–	B3 B3 Consulting Polandbody leasing	Warsaw	50-249	4.9 · 6	25–49 USD/h	55.7M PLN	6.2M PLN	IT consultants extending client teams	76	PortfolioClutchKRS
–	Clurgotoo little client evidence	Warsaw	50-249	4.3 · 11	25–49 USD/h	27.5M PLN	205K PLN	Enterprise app modernization	76	WebsitePortfolioClutchKRS
–	IT ITSharkztoo little client evidence	Warsaw	10-49	4.9 · 13	25–49 USD/h	7.3M PLN	461K PLN		74	WebsiteClutchKRS
–	OX Oxagiletoo little client evidence	Warsaw	250-999	4.9 · 17	n/a	2.1M PLN	135K PLN		73	WebsiteClutchKRS
–	SO SoftTecotoo little client evidence	Warsaw	250-999	4.8 · 16	25–49 USD/h	17.3M PLN	486K PLN	AI	73	WebsiteClutchKRS
–	SC ScienceSofttoo little client evidence	Warsaw	250-999	4.8 · 46	50–99 USD/h	6.8M PLN	184K PLN	AI	72	WebsiteClutchKRS
–	ImpiCodetoo little client evidence	Warsaw	10-49	5.0 · 12	50–99 USD/h	4.3M PLN	318K PLN	Web applications	71	WebsitePortfolioClutchKRS
–	Geniuseetoo little client evidence	Warsaw	250-999	5.0 · 71	25–49 USD/h	253K PLN	n/a	AI	70	WebsiteClutchKRS
–	SI Sigma Software Grouptoo little client evidence	n/a	1000-9999	4.8 · 37	50–99 USD/h	28M PLN	909K PLN	AI-powered software engineering	70	WebsitePortfolioClutchKRS
–	Sparkbittoo little client evidence	Warsaw	10-49	4.9 · 14	100–149 USD/h	8.1M PLN	-26K PLN	AI and ML	69	WebsitePortfolioClutchKRS
–	ST Stepwisetoo little client evidence	Warsaw	10-49	4.9 · 29	50–99 USD/h	800K PLN	-355K PLN	AI assessment and strategy	68	WebsitePortfolioClutchKRS
–	RE RevoTech PROtoo little client evidence	Warsaw	10-49	5.0 · 7	25–49 USD/h	276K PLN	42K PLN	AI	67	WebsiteClutchKRS
–	YN YNDtoo little client evidence	Warsaw	50-249	4.8 · 11	100–149 USD/h	17.3M PLN	-219K PLN	AI	66	WebsiteClutchKRS
–	IN Interexytoo little client evidence	Warsaw	250-999	4.9 · 74	25–49 USD/h	1.2M PLN	-16K PLN	AI	65	WebsiteClutchKRS
–	PL Plavnotoo little client evidence	Warsaw	50-249	4.9 · 56	25–49 USD/h	4.3M PLN	-15K PLN	AI	64	WebsiteClutchKRS
–	WH White Labeltoo little client evidence	Warsaw	50-249	4.9 · 9	25–49 USD/h	5.2M PLN	-312K PLN	AI	63	WebsiteClutchKRS
–	IM ImproveIT Solutionstoo little client evidence	Warsaw	50-249	4.9 · 28	25–49 USD/h	1.3M PLN	-88K PLN	AI	61	WebsiteClutchKRS
–	Appotypetoo little client evidence	Warsaw	10-49	4.8 · 6	25–49 USD/h	1.9M PLN	-314K PLN	Medtech software	58	WebsitePortfolioClutchKRS
–	EM Empattoo little client evidence	n/a	250-999	5.0 · 151	25–49 USD/h	n/a	n/a		53	WebsiteClutch
–	NE Neontritoo little client evidence	n/a	10-49	5.0 · 3	50–99 USD/h	n/a	n/a	Java	50	WebsiteClutch
–	E etoo little client evidence	n/a	50-249	5.0 · 19	50–99 USD/h	n/a	n/a	AI	49	WebsiteClutch
–	EI eintoo little client evidence	n/a	50-249	5.0 · 32	50–99 USD/h	n/a	n/a		49	WebsiteClutch
–	ES Escolatoo little client evidence	n/a	50-249	4.9 · 35	50–99 USD/h	n/a	n/a		47	WebsiteClutch
–	Nexio Managementtoo little client evidence	n/a	250-999	no Clutch profile	50–99 USD/h	n/a	n/a	Python	47	WebsiteClutchKRS
–	OR Orangesofttoo little client evidence	n/a	50-249	4.9 · 42	50–99 USD/h	n/a	n/a		47	WebsiteClutch
–	CO codequesttoo little client evidence	n/a	10-49	4.9 · 26	50–99 USD/h	n/a	n/a	AI	46	WebsiteClutch
–	YA Yalantistoo little client evidence	n/a	250-999	4.8 · 79	50–99 USD/h	n/a	n/a	AI	46	WebsiteClutch
–	IR iRonin.ITtoo little client evidence	n/a	10-49	4.9 · 33	50–99 USD/h	n/a	n/a		45	WebsiteClutch
–	PI PixelPlextoo little client evidence	n/a	50-249	4.9 · 33	50–99 USD/h	n/a	n/a	AI	45	WebsiteClutch
–	PR Pretiustoo little client evidence	n/a	50-249	4.8 · 8	50–99 USD/h	n/a	n/a	Python	45	WebsiteClutchKRS
–	IO iomicotoo little client evidence	n/a	10-49	4.9 · 24	50–99 USD/h	n/a	n/a		44	WebsiteClutch
–	GO GO ONLINEtoo little client evidence	n/a	10-49	5.0 · 11	25–49 USD/h	n/a	n/a	AI	43	WebsiteClutch
–	IT ITRextoo little client evidence	n/a	250-999	4.9 · 17	50–99 USD/h	n/a	n/a	AI	43	WebsiteClutch
–	SY Symfatoo little client evidence	n/a	50-249	4.9 · 18	50–99 USD/h	n/a	n/a	AI	43	WebsiteClutch
–	WI WiserBrandtoo little client evidence	n/a	50-249	4.9 · 16	100–149 USD/h	n/a	n/a	AI	43	WebsiteClutch
–	ZO Zoolatechtoo little client evidence	n/a	250-999	4.9 · 18	50–99 USD/h	n/a	n/a	AI	43	WebsiteClutch
–	ON Onwelotoo little client evidence	n/a	250-999	4.8 · 3	50–99 USD/h	n/a	n/a	Python	42	Clutch
–	PR Promwadtoo little client evidence	n/a	50-249	4.8 · 18	50–99 USD/h	n/a	n/a	AI	42	WebsiteClutch
–	TR Transition Technologies MStoo little client evidence	n/a	250-999	5.0 · 1	50–99 USD/h	n/a	n/a	Python	42	WebsiteClutchKRS
–	AP ApexTechtoo little client evidence	n/a	50-249	4.8 · 9	50–99 USD/h	n/a	n/a	AI	40	WebsiteClutch
–	SM Smartym Protoo little client evidence	n/a	10-49	4.7 · 15	25–49 USD/h	n/a	n/a		40	WebsiteClutch
–	HU HuskyJamtoo little client evidence	n/a	10-49	5.0 · 2	50–99 USD/h	n/a	n/a	AI	39	WebsiteClutch
–	AP apreelbody leasing	n/a	250-999	4.8 · 3	25–49 USD/h	n/a	n/a	Java	38	ClutchKRS
–	VE Veturaitoo little client evidence	n/a	10-49	5.0 · 1	100–149 USD/h	n/a	n/a	AI	37	WebsiteClutch

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

What they charge

Check any agency yourself in 10 minutes

1. Kotlin covers two different jobs: Android apps and JVM back ends. Ask which one the team does, because the people rarely overlap.
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.