Best Software Development Outsourcing UK

Lemberg Solutions vs Sigma Software: full comparison for 2026

Quick verdict

Lemberg Solutions (4.7/5) edges ahead of Sigma Software (4.0/5) overall. Lemberg Solutions is the better choice for UK product companies, software plus hardware, nearshore rates. 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.

Lemberg Solutions vs Sigma Software: head-to-head summary

Criterion Lemberg Solutions Sigma Software
Founded 2007 2002
HQ Lviv, Ukraine (offices in London, Hamburg, Kraków) Stockholm, Sweden and Kyiv, Ukraine (UK presence)
Team size 200+ 2,000+
Rating 4.7 / 5 4.0 / 5
Primary differentiator One team can own firmware, electronics, cloud back end and the user-facing app, managed from a London office Swedish group ownership with Ukrainian and Polish engineering
Pricing model Time and materials, fixed price, dedicated team Time and materials, dedicated team, fixed price
Min. engagement Not published Not published
Primary tech stack Embedded C/C++, Embedded Linux, RTOS Java, .NET, C++
Industries served Healthcare and medical devices, Automotive, Energy, Transportation and logistics, Manufacturing Automotive, Telecoms, Financial services, Media, Healthcare

Lemberg Solutions vs Sigma Software: overview

Lemberg Solutions

Lemberg Solutions was founded in 2007 and has grown to 200+ engineers working across embedded, cloud, data and AI, and web or mobile product development. UK clients deal with a London office at 25 Adelaide Road in West Ealing, while most engineering happens in Lviv and Kraków, with a further office in Hamburg. Named clients include Astronics, Caltech, Bosch Rexroth, Cellink, Ferno and Speede. The company holds ISO 27001 and ISO 9001 certification and transfers all intellectual property to the client.

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: Lemberg Solutions vs Sigma Software

Capability Lemberg Solutions 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: Lemberg Solutions vs Sigma Software

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

Pricing comparison: Lemberg Solutions vs Sigma Software

Criterion Lemberg Solutions Sigma Software
Minimum engagement Not published Not published
Engagement models Fixed project, Dedicated team, Team extension, 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: Lemberg Solutions vs Sigma Software

Dimension Lemberg Solutions Sigma Software
Best company size Startup to mid-market Startup to mid-market
Best industries Healthcare and medical devices, Automotive, Energy Automotive, Telecoms, Financial services
Best use cases A UK medtech start-up needs firmware, a companion app and a cloud dashboard from one supplier., An industrial equipment maker wants to add connectivity and remote monitoring to an existing product line. A telecoms firm needs network software engineers., An automotive supplier wants embedded developers.
Typical project type Fixed project Dedicated team

Lemberg Solutions vs Sigma Software: pros and cons

Lemberg Solutions
+ Covers the whole product, from electrical engineering and firmware through cloud and app development, so a UK buyer manages one supplier instead of three
+ ISO 27001 and ISO 9001 certification gives procurement teams documented security and quality processes to review
+ Established partnerships with NXP, Microchip and STMicroelectronics help when a product depends on specific silicon
+ All intellectual property passes to the client, which removes a common sticking point in outsourcing contracts
+ An in-house hardware lab lets the team prototype and test devices without waiting on third-party facilities
+ Engineering rates in Ukraine and Poland sit well below London consultancy day rates, while the London office keeps account management local
- Mass production is not handled in-house, so you will need a separate manufacturing partner for physical products
- Lemberg does not obtain regulatory certification for clients; it supplies the documentation and engineering support for approvals
- At 200+ people it cannot staff the very large programmes that Endava or EPAM can
- Some reviewers mention early friction over working hours before schedules were aligned with the client's time zone
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 Lemberg Solutions?

A typical fit: a UK medtech start-up needs firmware, a companion app and a cloud dashboard from one supplier.

One team can own firmware, electronics, cloud back end and the user-facing app, managed from a London office. Minimum engagement is not publicly disclosed. Works best with clients in Healthcare and medical devices, Automotive, Energy, Transportation and logistics, Manufacturing.

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: Lemberg Solutions vs Sigma Software

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Lemberg Solutions
You need a large dedicated team for an ongoing programme Lemberg Solutions
Your budget is at the lower end Compare: Lemberg Solutions (Not published) vs Sigma Software (Not published)
You need specialist depth in a specific vertical Lemberg Solutions
You want engineers added to your own in-house team Lemberg Solutions
Your product includes hardware, firmware or connected devices Lemberg Solutions

Use case fit: Lemberg Solutions vs Sigma Software

Use case Lemberg Solutions fit Sigma Software fit Winner
A UK medtech start-up needs firmware, a companion app and a cloud dashboard from one supplier. Strong Limited Lemberg Solutions
An industrial equipment maker wants to add connectivity and remote monitoring to an existing product line. Strong Limited Lemberg Solutions
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 Strong Strong Both equally
You want a fixed-price first phase before a longer engagement Strong Strong Both equally

Verdict: Lemberg Solutions vs Sigma Software

Lemberg Solutions (4.7/5) is the stronger overall choice for most Software Development Outsourcing projects. One team can own firmware, electronics, cloud back end and the user-facing app, managed from a London office.

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.

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Lemberg Solutions vs Sigma Software FAQ

Is Lemberg Solutions better than Sigma Software?

Lemberg Solutions (4.7/5) scores higher overall, but "better" depends on your use case. Lemberg Solutions's strongest advantage: covers the whole product, from electrical engineering and firmware through cloud and app development, so a UK buyer manages one supplier instead of three. Sigma Software's strongest advantage: swedish parent adds governance and financial backing.

How do Lemberg Solutions and Sigma Software differ in pricing?

Lemberg Solutions uses time and materials, fixed price, dedicated team 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: Lemberg Solutions or Sigma Software?

Sigma Software 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 Lemberg Solutions and Sigma Software?

Lemberg Solutions's primary differentiator is: one team can own firmware, electronics, cloud back end and the user-facing app, managed from a London office. Sigma Software's primary differentiator is: swedish group ownership with Ukrainian and Polish engineering. They also differ in team size (200+ vs 2,000+), minimum engagement (Not published vs Not published), and primary industries served (Healthcare and medical devices, Automotive vs Automotive, Telecoms).

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