Best Software Development Outsourcing UK

Scott Logic vs Sigma Software: full comparison for 2026

Quick verdict

Scott Logic (4.3/5) edges ahead of Sigma Software (4.0/5) overall. Scott Logic is the better choice for capital markets and government, UK-only delivery required. Sigma Software is the stronger option for broad-scope outsourcing, Scandinavian-owned vendor. The right choice depends on your project size, budget, and required tech stack.

Scott Logic vs Sigma Software: head-to-head summary

Criterion Scott Logic Sigma Software
Founded 2005 2002
HQ Newcastle upon Tyne, United Kingdom Stockholm, Sweden and Kyiv, Ukraine (UK presence)
Team size 400–500 2,000+
Rating 4.3 / 5 4.0 / 5
Primary differentiator Trading-system and capital-markets engineering from teams based entirely in the UK Swedish group ownership with Ukrainian and Polish engineering
Pricing model Time and materials, fixed price, capability-based Time and materials, dedicated team, fixed price
Min. engagement Not published Not published
Primary tech stack Java, C#, TypeScript Java, .NET, C++
Industries served Financial services, Capital markets, Public sector, Energy Automotive, Telecoms, Financial services, Media, Healthcare

Scott Logic vs Sigma Software: overview

Scott Logic

Former Lehman Brothers executive Gary Scott founded Scott Logic in Newcastle in 2005. It now employs 400+ people across Newcastle, London, Edinburgh, Bristol and Leeds, all in the UK. The firm is best known for trading and capital-markets software and for central government digital work. Every engineer is UK-based, which suits security-cleared and data-sensitive projects but rules out offshore cost savings.

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.

Services and capabilities: Scott Logic vs Sigma Software

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

Tech stack comparison: Scott Logic vs Sigma Software

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

Pricing comparison: Scott Logic vs Sigma Software

Criterion Scott Logic Sigma Software
Minimum engagement Not published Not published
Engagement models 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: Scott Logic vs Sigma Software

Dimension Scott Logic Sigma Software
Best company size Startup to mid-market Startup to mid-market
Best industries Financial services, Capital markets, Public sector Automotive, Telecoms, Financial services
Best use cases An investment bank needs a trading front end rebuilt by a UK-cleared team., A government department needs a digital service built to GDS standards. A telecoms firm needs network software engineers., An automotive supplier wants embedded developers.
Typical project type Fixed project Dedicated team

Scott Logic vs Sigma Software: pros and cons

Scott Logic
+ UK-only staffing makes security clearance and data-residency requirements straightforward
+ Rare depth in trading platforms and low-latency financial software
+ Regional offices outside London keep rates below the big London consultancies
- No nearshore or offshore delivery, so rates are UK onshore rates for every role
- Narrower industry spread than generalist outsourcing vendors
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

Who should choose Scott Logic?

A typical fit: an investment bank needs a trading front end rebuilt by a UK-cleared team.

Trading-system and capital-markets engineering from teams based entirely in the UK. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Capital markets, Public sector, Energy.

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.

Decision matrix: Scott Logic vs Sigma Software

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

Use case Scott Logic fit Sigma Software fit Winner
An investment bank needs a trading front end rebuilt by a UK-cleared team. Strong Limited Scott Logic
A government department needs a digital service built to GDS standards. Strong Limited Scott Logic
A telecoms firm needs network software engineers. Limited Strong Sigma Software
An automotive supplier wants embedded developers. Limited Strong Sigma Software
You need hardware, firmware or IoT work in the same contract Limited Strong Sigma Software
You want a fixed-price first phase before a longer engagement Strong Strong Both equally

Verdict: Scott Logic vs Sigma Software

Scott Logic (4.3/5) is the stronger overall choice for most Software Development Outsourcing projects. Trading-system and capital-markets engineering from teams based entirely in the UK.

Sigma Software (4.0/5) is worth a look in a scenario like this: an automotive supplier wants embedded developers. If your situation matches that, Sigma Software is a competitive option.

Related comparisons

Scott Logic vs Sigma Software FAQ

Is Scott Logic better than Sigma Software?

Scott Logic (4.3/5) scores higher overall, but "better" depends on your use case. Scott Logic's strongest advantage: UK-only staffing makes security clearance and data-residency requirements straightforward. Sigma Software's strongest advantage: swedish parent adds governance and financial backing.

How do Scott Logic and Sigma Software differ in pricing?

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

Which is better for enterprise: Scott Logic or Sigma Software?

Scott Logic 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 Scott Logic and Sigma Software?

Scott Logic's primary differentiator is: trading-system and capital-markets engineering from teams based entirely in the UK. Sigma Software's primary differentiator is: swedish group ownership with Ukrainian and Polish engineering. They also differ in team size (400–500 vs 2,000+), minimum engagement (Not published vs Not published), and primary industries served (Financial services, Capital markets vs Automotive, Telecoms).

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