Kainos vs DataArt: full comparison for 2026
Quick verdict
Kainos (4.2/5) edges ahead of DataArt (4.0/5) overall. Kainos is the better choice for UK government digital services, Workday programmes. DataArt is the stronger option for travel and finance firms, long-term nearshore teams. The right choice depends on your project size, budget, and required tech stack.
Kainos vs DataArt: head-to-head summary
| Criterion | Kainos | DataArt |
|---|---|---|
| Founded | 1986 | 1997 |
| HQ | Belfast, United Kingdom | New York, United States (London office) |
| Team size | 3,000+ | 5,000–6,000 |
| Rating | 4.2 / 5 | 4.0 / 5 |
| Primary differentiator | Combined government digital delivery and Workday partnership, listed on the LSE | Two decades of London presence and specialist travel-industry engineering |
| Pricing model | Time and materials, fixed price, framework call-offs | Time and materials, dedicated team |
| Min. engagement | Not published | Not published |
| Primary tech stack | Java, .NET, AWS | Java, .NET, Python |
| Industries served | Public sector, Healthcare, Financial services, Commercial enterprises | Travel and hospitality, Financial services, Healthcare, Media, Retail |
Kainos vs DataArt: overview
Kainos
Kainos was founded in Belfast in 1986 and is listed on the London Stock Exchange. In the year to March 2026 it reported revenue of £431.1m, up 17%, and a workforce of 3,216 after adding 420 people, a rebound from a 2024/25 restructuring that cut staff by 7%. It runs three divisions: Digital Services, Workday Services and Workday Products. Its government work spans departments such as the Home Office and NHS bodies, delivered from the UK and Ireland.
DataArt
Eugene Goland founded DataArt in New York in 1997, and the company opened in London in 2001. It reports more than 6,000 people as of September 2025, spread across Central and Eastern Europe, Latin America and elsewhere. Travel and hospitality, finance and healthcare are its strongest industries. UK clients get a long-standing London presence with delivery from lower-cost locations.
Services and capabilities: Kainos vs DataArt
| Capability | Kainos | DataArt |
|---|---|---|
| Custom software development | ✓ | ✓ |
| Mobile app development | ✗ | ✗ |
| Cloud & DevOps | ✓ | ✓ |
| Data & AI | ✓ | ✓ |
| Legacy modernisation | ✓ | ✓ |
| Embedded & IoT | ✗ | ✗ |
| Dedicated team model | ✗ | ✓ |
| Fixed-price projects | ✓ | ✗ |
Tech stack comparison: Kainos vs DataArt
| Framework / platform | Kainos | DataArt |
|---|---|---|
| .NET | ✓ | ✓ |
| Java | ✓ | ✓ |
| Python | ✓ | ✓ |
| React | N/A | ✓ |
| AWS | ✓ | ✓ |
| Azure | ✓ | ✓ |
| Kubernetes | ✓ | N/A |
| Embedded | N/A | N/A |
Pricing comparison: Kainos vs DataArt
| Criterion | Kainos | DataArt |
|---|---|---|
| Minimum engagement | Not published | Not published |
| Engagement models | Fixed project, Time and materials | Dedicated team, Time and materials |
| Rate transparency | Not public | Not public |
| Price tier | Mid-market | Mid-market |
Target audience comparison: Kainos vs DataArt
| Dimension | Kainos | DataArt |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | Public sector, Healthcare, Financial services | Travel and hospitality, Financial services, Healthcare |
| Best use cases | A government department needs a GOV.UK service built and run., An NHS body wants a digital patient service delivered onshore. | A travel company needs booking-engine and distribution work., A financial firm wants legacy trading software modernised. |
| Typical project type | Fixed project | Dedicated team |
Kainos vs DataArt: pros and cons
| Kainos | |
|---|---|
| + | Belfast-based delivery costs less than London while staying UK-based |
| + | Public reporting gives buyers verified financials and headcount |
| + | Very familiar with UK public-sector procurement frameworks |
| - | Little offshore capacity, so rates do not compete with nearshore vendors |
| - | Workday business takes a growing share of leadership focus |
| - | The 2024/25 restructuring shows exposure to swings in public-sector spending |
| DataArt | |
|---|---|
| + | London office has been open since 2001 |
| + | Specialist knowledge of travel booking and distribution systems |
| + | Delivery spread across several regions |
| - | US headquarters means UK contracts may sit with a non-UK parent |
| - | Headcount estimates vary widely between sources |
Who should choose Kainos?
A typical fit: a government department needs a GOV.UK service built and run.
Combined government digital delivery and Workday partnership, listed on the LSE. Minimum engagement is not publicly disclosed. Works best with clients in Public sector, Healthcare, Financial services, Commercial enterprises.
Who should choose DataArt?
A typical fit: a travel company needs booking-engine and distribution work.
Two decades of London presence and specialist travel-industry engineering. Minimum engagement is not publicly disclosed. Works best with clients in Travel and hospitality, Financial services, Healthcare, Media, Retail.
Decision matrix: Kainos vs DataArt
| Your situation | Recommended choice |
|---|---|
| You need full-ownership delivery on a defined project scope | Kainos |
| You need a large dedicated team for an ongoing programme | DataArt |
| Your budget is at the lower end | Compare: Kainos (Not published) vs DataArt (Not published) |
| You need specialist depth in a specific vertical | DataArt |
| You want engineers added to your own in-house team | Neither lists team extension; ask about dedicated teams |
| Your product includes hardware, firmware or connected devices | Neither; consider an embedded specialist |
Use case fit: Kainos vs DataArt
| Use case | Kainos fit | DataArt fit | Winner |
|---|---|---|---|
| A government department needs a GOV.UK service built and run. | Strong | Limited | Kainos |
| An NHS body wants a digital patient service delivered onshore. | Strong | Limited | Kainos |
| A travel company needs booking-engine and distribution work. | Limited | Strong | DataArt |
| A financial firm wants legacy trading software modernised. | Limited | Strong | DataArt |
| You need hardware, firmware or IoT work in the same contract | Limited | Limited | Both equally |
| You want a fixed-price first phase before a longer engagement | Strong | Limited | Kainos |
Verdict: Kainos vs DataArt
Kainos (4.2/5) is the stronger overall choice for most Software Development Outsourcing projects. Combined government digital delivery and Workday partnership, listed on the LSE.
DataArt (4.0/5) is worth a look in a scenario like this: a financial firm wants legacy trading software modernised. If your situation matches that, DataArt is a competitive option.
Related comparisons
Kainos vs DataArt FAQ
Is Kainos better than DataArt?
Kainos (4.2/5) scores higher overall, but "better" depends on your use case. Kainos's strongest advantage: belfast-based delivery costs less than London while staying UK-based. DataArt's strongest advantage: london office has been open since 2001.
How do Kainos and DataArt differ in pricing?
Kainos uses time and materials, fixed price, framework call-offs pricing. DataArt uses time and materials, dedicated team pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.
Which is better for enterprise: Kainos or DataArt?
DataArt is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each company before shortlisting.
What are the main differences between Kainos and DataArt?
Kainos's primary differentiator is: combined government digital delivery and Workday partnership, listed on the LSE. DataArt's primary differentiator is: two decades of London presence and specialist travel-industry engineering. They also differ in team size (3,000+ vs 5,000–6,000), minimum engagement (Not published vs Not published), and primary industries served (Public sector, Healthcare vs Travel and hospitality, Financial services).
Verify all details directly with each company before making a decision.