Best IoT App Development Companies

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 nordic buyers wanting a large Swedish-owned partner. EPAM Systems is the stronger option for fortune 500 firms adding IoT to enterprise systems. 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 Newtown, Pennsylvania, USA
Team size 1,001-5,000 50,000+
Rating 4.0 / 5 3.9 / 5
Primary differentiator Swedish group ownership with large Eastern European engineering capacity Publicly listed enterprise vendor that ties IoT data into large data and cloud estates
Pricing model Time and materials, dedicated team Time and materials, dedicated team, managed services
Min. engagement Not published Not published
Primary tech stack Embedded C/C++, Azure IoT, AWS AWS, Azure, Google Cloud
Industries served Automotive, Telecom, Healthcare, Energy Industrial manufacturing, Healthcare, Retail, Financial services, Energy

Sigma Software vs EPAM Systems: overview

Sigma Software

Sigma Software dates to 2002 and is part of Sweden's Sigma group, with its legal base in Stockholm and most engineers in Ukraine and Poland. Headcount is in the 1,001 to 5,000 range. Its embedded and IoT unit sits beside automotive, telecom and gaming practices. The Scandinavian ownership appeals to Nordic buyers, while IoT app projects are a modest share of a broad portfolio.

EPAM Systems

EPAM was founded in 1993 and is headquartered in Newtown, Pennsylvania, with more than 50,000 staff. It is listed on the New York Stock Exchange and works mostly for large enterprises. Connected-product and industrial IoT work happens inside its broader engineering, data and cloud practices. Its scale and compliance are real advantages, but IoT apps are a narrow slice of what it does.

Services and capabilities: Sigma Software vs EPAM Systems

Capability Sigma Software EPAM Systems
Mobile companion apps ✓ ✓
Web dashboards and portals ✓ ✓
IoT cloud back end ✓ ✓
Embedded firmware ✓ ✗
Hardware design ✗ ✗
Edge AI ✗ ✗
Fixed-price projects ✗ ✗
Dedicated team model ✓ ✓

Tech stack comparison: Sigma Software vs EPAM Systems

Framework / platform Sigma Software EPAM Systems
AWS ✓ ✓
Azure ✓ ✓
Embedded Linux N/A N/A
BLE N/A N/A
MQTT N/A N/A
Swift ✓ N/A
Kotlin ✓ N/A
Flutter N/A N/A
React Native 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, Time and materials, Team extension Dedicated team, Time and materials, Managed services
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, Telecom, Healthcare Industrial manufacturing, Healthcare, Retail
Best use cases Adding a dedicated team to a Nordic manufacturer's connected product programme., Building telemetry dashboards for telecom or energy equipment. Connecting factory telemetry to an enterprise data platform., Building internal apps that use device data across a large company.
Typical project type Dedicated team Dedicated team

Sigma Software vs EPAM Systems: pros and cons

Sigma Software
+ Can staff large programmes quickly
+ Swedish ownership simplifies contracting for Nordic companies
+ Embedded practice gives it device-side skills many generalists lack
- IoT apps are a small part of a very broad service list
- Large-company overhead for small projects
- Less hardware design than the specialists ranked higher
EPAM Systems
+ Public-company governance and financial reporting
+ Strong data engineering for analysing large telemetry volumes
+ Global delivery footprint
- IoT app development is a small part of a broad enterprise portfolio
- Little hardware or firmware work
- Pricing and process are built for large enterprises and rarely fit startup budgets

Who should choose Sigma Software?

A typical fit: adding a dedicated team to a Nordic manufacturer's connected product programme.

Swedish group ownership with large Eastern European engineering capacity. Minimum engagement is not publicly disclosed. Works best with clients in Automotive, Telecom, Healthcare, Energy.

Who should choose EPAM Systems?

A typical fit: connecting factory telemetry to an enterprise data platform.

Publicly listed enterprise vendor that ties IoT data into large data and cloud estates. Minimum engagement is not publicly disclosed. Works best with clients in Industrial manufacturing, Healthcare, Retail, Financial services, Energy.

Decision matrix: Sigma Software vs EPAM Systems

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Both offer fixed-price models
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 EPAM Systems
You need staff augmentation or team extension Neither; consider alternatives that offer staff aug
You need consulting before committing to a build EPAM Systems

Use case fit: Sigma Software vs EPAM Systems

Use case Sigma Software fit EPAM Systems fit Winner
Adding a dedicated team to a Nordic manufacturer's connected product programme. Strong Limited Sigma Software
Building telemetry dashboards for telecom or energy equipment. Strong Strong Both equally
Connecting factory telemetry to an enterprise data platform. Limited Strong EPAM Systems
Building internal apps that use device data across a large company. Strong Strong Both equally
Fixed-price MVP app Limited Limited Both equally
Long-term dedicated team Limited Limited Both equally

Verdict: Sigma Software vs EPAM Systems

Sigma Software (4.0/5) is the stronger overall choice for most IoT App Development projects. Swedish group ownership with large Eastern European engineering capacity.

EPAM Systems (3.9/5) is worth a look if you need building internal apps that use device data across a large company. If your situation matches that, EPAM Systems is a competitive option.

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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: can staff large programmes quickly. EPAM Systems's strongest advantage: public-company governance and financial reporting.

How do Sigma Software and EPAM Systems differ in pricing?

Sigma Software uses time and materials, dedicated team pricing. EPAM Systems uses time and materials, dedicated team, managed services 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?

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 Sigma Software and EPAM Systems?

Sigma Software's primary differentiator is: swedish group ownership with large Eastern European engineering capacity. EPAM Systems's primary differentiator is: publicly listed enterprise vendor that ties IoT data into large data and cloud estates. They also differ in team size (1,001-5,000 vs 50,000+), minimum engagement (Not published vs Not published), and primary industries served (Automotive, Telecom vs Industrial manufacturing, Healthcare).

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