Best Software Development Outsourcing UK

Kainos vs Codurance: full comparison for 2026

Quick verdict

Kainos (4.2/5) edges ahead of Codurance (4.1/5) overall. Kainos is the better choice for UK government digital services, Workday programmes. Codurance is the stronger option for legacy modernisation, engineering-practice improvement. The right choice depends on your project size, budget, and required tech stack.

Kainos vs Codurance: head-to-head summary

Criterion Kainos Codurance
Founded 1986 2013
HQ Belfast, United Kingdom London, United Kingdom
Team size 3,000+ 150–300
Rating 4.2 / 5 4.1 / 5
Primary differentiator Combined government digital delivery and Workday partnership, listed on the LSE Craftsmanship-led delivery that also coaches in-house teams
Pricing model Time and materials, fixed price, framework call-offs Time and materials, fixed price
Min. engagement Not published Not published
Primary tech stack Java, .NET, AWS Java, Kotlin, C#
Industries served Public sector, Healthcare, Financial services, Commercial enterprises Financial services, Retail, Media, Public sector

Kainos vs Codurance: 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.

Codurance

Mashooq Badar co-founded Codurance in London in 2013. Its pitch is software craftsmanship: test-driven development, pairing and clean architecture. Besides London and Manchester, it has offices in Barcelona, Madrid and Lisbon, which bring Iberian rates into the mix. Headcount estimates range from roughly 170 to 300.

Services and capabilities: Kainos vs Codurance

Capability Kainos Codurance
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 Codurance

Framework / platform Kainos Codurance
.NET ✓ ✓
Java ✓ ✓
Python ✓ N/A
React N/A N/A
AWS ✓ ✓
Azure ✓ ✓
Kubernetes ✓ N/A
Embedded N/A N/A

Pricing comparison: Kainos vs Codurance

Criterion Kainos Codurance
Minimum engagement Not published Not published
Engagement models Fixed project, Time and materials Fixed project, Team extension, Time and materials
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Kainos vs Codurance

Dimension Kainos Codurance
Best company size Startup to mid-market Startup to mid-market
Best industries Public sector, Healthcare, Financial services Financial services, Retail, Media
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 company needs a monolith split into services without stopping feature work., An engineering team wants to adopt test-driven development and pairing with outside help.
Typical project type Fixed project Fixed project

Kainos vs Codurance: 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
Codurance
+ Strong on cleaning up legacy codebases and raising engineering standards
+ Spanish and Portuguese offices provide a cheaper option without leaving Western Europe
+ Coaching is built into engagements, so client teams improve along the way
- Small team limits how fast it can staff a large programme
- Iberian rates are higher than Central and Eastern European ones

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 Codurance?

A typical fit: a company needs a monolith split into services without stopping feature work.

Craftsmanship-led delivery that also coaches in-house teams. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Retail, Media, Public sector.

Decision matrix: Kainos vs Codurance

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 Check each company's engagement model
Your budget is at the lower end Compare: Kainos (Not published) vs Codurance (Not published)
You need specialist depth in a specific vertical Kainos
You want engineers added to your own in-house team Codurance
Your product includes hardware, firmware or connected devices Neither; consider an embedded specialist

Use case fit: Kainos vs Codurance

Use case Kainos fit Codurance 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 company needs a monolith split into services without stopping feature work. Limited Strong Codurance
An engineering team wants to adopt test-driven development and pairing with outside help. Limited Strong Codurance
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 Strong Both equally

Verdict: Kainos vs Codurance

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.

Codurance (4.1/5) is worth a look in a scenario like this: an engineering team wants to adopt test-driven development and pairing with outside help. If your situation matches that, Codurance is a competitive option.

Related comparisons

Kainos vs Codurance FAQ

Is Kainos better than Codurance?

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. Codurance's strongest advantage: strong on cleaning up legacy codebases and raising engineering standards.

How do Kainos and Codurance differ in pricing?

Kainos uses time and materials, fixed price, framework call-offs pricing. Codurance uses time and materials, fixed price pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: Kainos or Codurance?

Codurance 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 Codurance?

Kainos's primary differentiator is: combined government digital delivery and Workday partnership, listed on the LSE. Codurance's primary differentiator is: craftsmanship-led delivery that also coaches in-house teams. They also differ in team size (3,000+ vs 150–300), minimum engagement (Not published vs Not published), and primary industries served (Public sector, Healthcare vs Financial services, Retail).

Verify all details directly with each company before making a decision.