Best Software Development Outsourcing UK

Sigma Software vs Itransition: full comparison for 2026

Quick verdict

Sigma Software (4.0/5) edges ahead of Itransition (3.8/5) overall. Sigma Software is the better choice for broad-scope outsourcing, Scandinavian-owned vendor. Itransition is the stronger option for budget-conscious buyers, broad generalist work. The right choice depends on your project size, budget, and required tech stack.

Sigma Software vs Itransition: head-to-head summary

Criterion Sigma Software Itransition
Founded 2002 1998
HQ Stockholm, Sweden and Kyiv, Ukraine (UK presence) Tbilisi, Georgia (London office)
Team size 2,000+ 3,000+
Rating 4.0 / 5 3.8 / 5
Primary differentiator Swedish group ownership with Ukrainian and Polish engineering Low rates across a wide catalogue of development and platform services
Pricing model Time and materials, dedicated team, fixed price Time and materials, fixed price, dedicated team
Min. engagement Not published Not published
Primary tech stack Java, .NET, C++ .NET, Java, PHP
Industries served Automotive, Telecoms, Financial services, Media, Healthcare Healthcare, Retail, Financial services, Logistics

Sigma Software vs Itransition: overview

Sigma Software

Sigma Software was founded in 2002 and belongs to the Swedish Sigma group. It describes a team of over 2,100 professionals in 40 offices across 19 countries, with most engineering in Ukraine and Poland. Directories list it inconsistently as UK-based or Stockholm-based, which reflects its mix of Swedish ownership and international offices. It covers a broad range of services and industries.

Itransition

Itransition has been delivering software since 1998 and reports more than 3,000 engineers serving clients in over 40 countries. It lists a London office, while PitchBook gives Tbilisi, Georgia as its corporate office. Historically its delivery base was in Belarus, and it has since built up other locations. Its services span custom development, Salesforce and Microsoft Dynamics, and testing.

Services and capabilities: Sigma Software vs Itransition

Capability Sigma Software Itransition
Custom software development ✓ ✓
Mobile app development ✗ ✗
Cloud & DevOps ✓ ✗
Data & AI ✓ ✗
Legacy modernisation ✗ ✗
Embedded & IoT ✓ ✗
Dedicated team model ✓ ✓
Fixed-price projects ✓ ✓

Tech stack comparison: Sigma Software vs Itransition

Framework / platform Sigma Software Itransition
.NET ✓ ✓
Java ✓ ✓
Python ✓ N/A
React ✓ N/A
AWS ✓ ✓
Azure ✓ ✓
Kubernetes N/A N/A
Embedded N/A N/A

Pricing comparison: Sigma Software vs Itransition

Criterion Sigma Software Itransition
Minimum engagement Not published Not published
Engagement models Dedicated team, Fixed project, Time and materials Dedicated team, Fixed project, Time and materials
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Sigma Software vs Itransition

Dimension Sigma Software Itransition
Best company size Startup to mid-market Startup to mid-market
Best industries Automotive, Telecoms, Financial services Healthcare, Retail, Financial services
Best use cases A telecoms firm needs network software engineers., An automotive supplier wants embedded developers. A company needs Salesforce customisation at a low rate., A retailer wants testing capacity for a release programme.
Typical project type Dedicated team Dedicated team

Sigma Software vs Itransition: pros and cons

Sigma Software
+ Swedish parent adds governance and financial backing
+ Broad technical range, including embedded and automotive
+ Ukrainian and Polish rates
- UK office details are hard to confirm from public sources
- Breadth means less obvious specialism in any one area
Itransition
+ Among the lowest rates for a vendor of this size
+ Covers CRM platforms such as Salesforce and Dynamics as well as custom builds
+ Large team for staffing flexibility
- Thin evidence of UK-based delivery or account leadership
- Corporate location data is inconsistent between sources
- Historical Belarus base may raise questions with some UK procurement teams

Who should choose Sigma Software?

A typical fit: a telecoms firm needs network software engineers.

Swedish group ownership with Ukrainian and Polish engineering. Minimum engagement is not publicly disclosed. Works best with clients in Automotive, Telecoms, Financial services, Media, Healthcare.

Who should choose Itransition?

A typical fit: a company needs Salesforce customisation at a low rate.

Low rates across a wide catalogue of development and platform services. Minimum engagement is not publicly disclosed. Works best with clients in Healthcare, Retail, Financial services, Logistics.

Decision matrix: Sigma Software vs Itransition

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Sigma Software
You need a large dedicated team for an ongoing programme Sigma Software
Your budget is at the lower end Compare: Sigma Software (Not published) vs Itransition (Not published)
You need specialist depth in a specific vertical Sigma Software
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 Sigma Software

Use case fit: Sigma Software vs Itransition

Use case Sigma Software fit Itransition fit Winner
A telecoms firm needs network software engineers. Strong Limited Sigma Software
An automotive supplier wants embedded developers. Strong Limited Sigma Software
A company needs Salesforce customisation at a low rate. Limited Strong Itransition
A retailer wants testing capacity for a release programme. Limited Strong Itransition
You need hardware, firmware or IoT work in the same contract Strong Limited Sigma Software
You want a fixed-price first phase before a longer engagement Strong Strong Both equally

Verdict: Sigma Software vs Itransition

Sigma Software (4.0/5) is the stronger overall choice for most Software Development Outsourcing projects. Swedish group ownership with Ukrainian and Polish engineering.

Itransition (3.8/5) is worth a look in a scenario like this: a retailer wants testing capacity for a release programme. If your situation matches that, Itransition is a competitive option.

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Sigma Software vs Itransition FAQ

Is Sigma Software better than Itransition?

Sigma Software (4.0/5) scores higher overall, but "better" depends on your use case. Sigma Software's strongest advantage: swedish parent adds governance and financial backing. Itransition's strongest advantage: among the lowest rates for a vendor of this size.

How do Sigma Software and Itransition differ in pricing?

Sigma Software uses time and materials, dedicated team, fixed price pricing. Itransition uses time and materials, fixed price, dedicated team pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: Sigma Software or Itransition?

Itransition 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 Sigma Software and Itransition?

Sigma Software's primary differentiator is: swedish group ownership with Ukrainian and Polish engineering. Itransition's primary differentiator is: low rates across a wide catalogue of development and platform services. They also differ in team size (2,000+ vs 3,000+), minimum engagement (Not published vs Not published), and primary industries served (Automotive, Telecoms vs Healthcare, Retail).

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