Best Software Development Outsourcing UK

Sigma Software vs EPAM Systems: full comparison for 2026

Quick verdict

Sigma Software (4.0/5) edges ahead of EPAM Systems (3.9/5) overall. Sigma Software is the better choice for broad-scope outsourcing, Scandinavian-owned vendor. EPAM Systems is the stronger option for FTSE-scale programmes, strict compliance, huge teams. The right choice depends on your project size, budget, and required tech stack.

Sigma Software vs EPAM Systems: head-to-head summary

Criterion Sigma Software EPAM Systems
Founded 2002 1993
HQ Stockholm, Sweden and Kyiv, Ukraine (UK presence) Newtown, Pennsylvania, United States (London and Newcastle offices)
Team size 2,000+ 50,000+
Rating 4.0 / 5 3.9 / 5
Primary differentiator Swedish group ownership with Ukrainian and Polish engineering The largest delivery capacity on this list, with mature compliance and security processes
Pricing model Time and materials, dedicated team, fixed price Time and materials, managed service, fixed price
Min. engagement Not published Not published
Primary tech stack Java, .NET, C++ Java, .NET, AWS
Industries served Automotive, Telecoms, Financial services, Media, Healthcare Financial services, Retail, Healthcare, Media, Manufacturing

Sigma Software vs EPAM Systems: 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.

EPAM Systems

EPAM Systems was founded in 1993 and is headquartered in Newtown, Pennsylvania. It reported more than 62,750 employees in Q1 2026. In the UK it has offices in London and Newcastle, but most delivery comes from Central and Eastern Europe, India and Latin America. Its size suits large regulated programmes better than small or mid-sized builds.

Services and capabilities: Sigma Software vs EPAM Systems

Capability Sigma Software EPAM Systems
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 EPAM Systems

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

Pricing comparison: Sigma Software vs EPAM Systems

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

Target audience comparison: Sigma Software vs EPAM Systems

Dimension Sigma Software EPAM Systems
Best company size Startup to mid-market Startup to mid-market
Best industries Automotive, Telecoms, Financial services Financial services, Retail, Healthcare
Best use cases A telecoms firm needs network software engineers., An automotive supplier wants embedded developers. A bank needs a 200-person platform programme., A global retailer wants a managed engineering service.
Typical project type Dedicated team Dedicated team

Sigma Software vs EPAM Systems: 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
EPAM Systems
+ Can staff hundreds of engineers on one programme
+ Mature security, audit and compliance processes for regulated buyers
+ Public-company reporting
- Little benefit for mid-market buyers, who can get more attention elsewhere
- UK offices are small relative to global delivery
- Account processes are heavy for smaller projects

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 EPAM Systems?

A typical fit: a bank needs a 200-person platform programme.

The largest delivery capacity on this list, with mature compliance and security processes. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Retail, Healthcare, Media, Manufacturing.

Decision matrix: Sigma Software vs EPAM Systems

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 EPAM Systems (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 EPAM Systems

Use case Sigma Software fit EPAM Systems fit Winner
A telecoms firm needs network software engineers. Strong Limited Sigma Software
An automotive supplier wants embedded developers. Strong Limited Sigma Software
A bank needs a 200-person platform programme. Limited Strong EPAM Systems
A global retailer wants a managed engineering service. Limited Strong EPAM Systems
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 EPAM Systems

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

EPAM Systems (3.9/5) is worth a look in a scenario like this: a global retailer wants a managed engineering service. If your situation matches that, EPAM Systems is a competitive option.

Related comparisons

Sigma Software vs EPAM Systems FAQ

Is Sigma Software better than EPAM Systems?

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. EPAM Systems's strongest advantage: can staff hundreds of engineers on one programme.

How do Sigma Software and EPAM Systems differ in pricing?

Sigma Software uses time and materials, dedicated team, fixed price pricing. EPAM Systems uses time and materials, managed service, fixed price 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 EPAM Systems?

EPAM Systems 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 EPAM Systems?

Sigma Software's primary differentiator is: swedish group ownership with Ukrainian and Polish engineering. EPAM Systems's primary differentiator is: the largest delivery capacity on this list, with mature compliance and security processes. They also differ in team size (2,000+ vs 50,000+), minimum engagement (Not published vs Not published), and primary industries served (Automotive, Telecoms vs Financial services, Retail).

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