Voler Systems vs Sigma Software Group: full comparison for 2026
Quick verdict
Voler Systems (4.5/5) edges ahead of Sigma Software Group (4.0/5) overall. Voler Systems is the better choice for ultra-low-power wearable and biomedical sensor firmware. Sigma Software Group is the stronger option for mid-to-large programs needing firmware alongside a broader multi-industry engineering group. The right choice depends on your project size, budget, and required tech stack.
Voler Systems vs Sigma Software Group: head-to-head summary
| Criterion | Voler Systems | Sigma Software Group |
|---|---|---|
| Founded | 1979 | 2002 |
| HQ | Sunnyvale, CA, USA | Kharkiv, Ukraine |
| Team size | 22 | 1,100+ |
| Rating | 4.5 / 5 | 4.0 / 5 |
| Primary differentiator | 46 years of continuous operation with a firmware practice built specifically around ultra-low-power wearable constraints | Majority Swedish ownership since 2006 combined with a 1,100-plus person multi-country delivery footprint |
| Pricing model | Project-based electronic and firmware design engagements | Project-based and staff augmentation engagements |
| Min. engagement | Not published | Not published |
| Primary tech stack | C, C++, FPGA | C, C++, Embedded Middleware |
| Industries served | Wearable technology, Medical devices, Consumer electronics | Aviation, Gaming, Telecom, Industrial IoT |
Voler Systems vs Sigma Software Group: overview
Voler Systems
Voler Systems has operated out of Sunnyvale, California since 1979, making it one of the longest-running independent electronic design consultancies still active in the niche, with a team of roughly 22 engineers today. The firm pairs analog circuit design and FPGA programming with embedded firmware, and its wearable device work leans specifically on ultra-low-power system design, sensor integration, and wireless transmission, the constraints that separate battery-powered wearables from mains-powered embedded products. It also does biomedical sensor and regulatory-support work for medical wearables, an area that draws on both its electronics and firmware disciplines together.
Sigma Software Group
Sigma Software Group was founded in Kharkiv, Ukraine in 2002 by five friends and now employs more than 1,100 people across Ukraine, Sweden, Poland, and the United States. In 2006 the Swedish IT conglomerate Sigma Group acquired a 60% stake in the company, an ownership structure that has held since; the remaining 40% stays with the original Ukrainian founders. Its embedded and IoT services cover application development, firmware, middleware, device drivers, and human-machine interfaces, delivered as one practice within a much larger portfolio spanning gaming, aviation, and telecom software.
Services and capabilities: Voler Systems vs Sigma Software Group
| Capability | Voler Systems | Sigma Software Group |
|---|---|---|
| RTOS firmware development | ✓ | ✓ |
| Bare-metal & driver development | ✓ | ✗ |
| Secure boot / OTA firmware updates | ✗ | ✗ |
| MCU & platform migration | ✗ | ✗ |
| Connectivity & IoT protocols | ✓ | ✓ |
| Functional safety / compliance | ✗ | ✗ |
| Embedded AI / on-device inference | ✗ | ✗ |
| Firmware GUI development | ✗ | ✓ |
| Hardware co-design / board bring-up | ✓ | ✗ |
| Staff augmentation | ✗ | ✓ |
Tech stack comparison: Voler Systems vs Sigma Software Group
| Framework / platform | Voler Systems | Sigma Software Group |
|---|---|---|
| FreeRTOS | N/A | N/A |
| Zephyr | N/A | N/A |
| STM32 | N/A | N/A |
| ARM Cortex-M | N/A | N/A |
| Embedded Linux | N/A | N/A |
| BLE | N/A | N/A |
| MISRA | N/A | N/A |
| Secure Boot | N/A | N/A |
| AWS IoT | N/A | N/A |
| RISC-V | N/A | N/A |
Pricing comparison: Voler Systems vs Sigma Software Group
| Criterion | Voler Systems | Sigma Software Group |
|---|---|---|
| Minimum engagement | Not published | Not published |
| Engagement models | Project-based design engagements | Project-based engineering, Staff augmentation |
| Rate transparency | Not public | Not public |
| Price tier | Mid-market | Mid-market |
Target audience comparison: Voler Systems vs Sigma Software Group
| Dimension | Voler Systems | Sigma Software Group |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | Wearable technology, Medical devices, Consumer electronics | Aviation, Gaming, Telecom |
| Best use cases | Ultra-low-power firmware for a battery-powered wearable sensor, FPGA and firmware co-design for a custom signal-processing device | Device driver or middleware development as part of a broader embedded program, HMI development for an industrial or aviation-adjacent embedded product |
| Typical project type | Project-based design engagements | Project-based engineering |
Voler Systems vs Sigma Software Group: pros and cons
| Voler Systems | |
|---|---|
| + | 46 years of operating history is unusually long for an independent firmware and electronics design house |
| + | Ultra-low-power design is a stated specialty, not a general capability applied to a battery-powered project after the fact |
| + | FPGA programming alongside firmware covers projects that need custom logic as well as MCU code |
| + | Biomedical sensor and wearable regulatory-support experience spans both hardware and firmware sides of a project |
| - | 22 engineers limits the firm to a small number of concurrent client programs at any time |
| - | Public case study volume is lower than larger firmware consultancies, so verifying specific past projects requires a direct conversation |
| - | No published pricing or minimum engagement figure |
| Sigma Software Group | |
|---|---|
| + | 1,100-plus employees across Ukraine, Sweden, Poland, and the US give substantial delivery capacity and timezone coverage |
| + | 60% Swedish ownership since 2006 brings the governance and stability of an established Scandinavian IT conglomerate |
| + | 23 years of operating history under continuous leadership from its original founding team |
| + | Multi-industry portfolio spanning aviation, gaming, and telecom means firmware engineers work alongside teams solving comparable real-time and reliability problems in other domains |
| - | Firmware and embedded work is one practice within a much broader multi-industry engineering group, not the company's sole focus |
| - | 60% ownership by Sweden's Sigma Group means the company is not independently controlled by its original Ukrainian founders |
| - | No published pricing or minimum engagement figure |
Who should choose Voler Systems?
A typical fit: ultra-low-power firmware for a battery-powered wearable sensor.
46 years of continuous operation with a firmware practice built specifically around ultra-low-power wearable constraints. Minimum engagement is not publicly disclosed. Works best with clients in Wearable technology, Medical devices, Consumer electronics.
Who should choose Sigma Software Group?
A typical fit: device driver or middleware development as part of a broader embedded program.
Majority Swedish ownership since 2006 combined with a 1,100-plus person multi-country delivery footprint. Minimum engagement is not publicly disclosed. Works best with clients in Aviation, Gaming, Telecom, Industrial IoT.
Decision matrix: Voler Systems vs Sigma Software Group
| 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 | Check each company's engagement model |
| Your budget is at the lower end | Compare: Voler Systems (Not published) vs Sigma Software Group (Not published) |
| You need specialist depth in a specific vertical | Sigma Software Group |
| You need staff augmentation or team extension | Sigma Software Group |
| You need consulting before committing to a build | Both may offer discovery engagements |
Use case fit: Voler Systems vs Sigma Software Group
| Use case | Voler Systems fit | Sigma Software Group fit | Winner |
|---|---|---|---|
| Ultra-low-power firmware for a battery-powered wearable sensor | Strong | Limited | Voler Systems |
| FPGA and firmware co-design for a custom signal-processing device | Strong | Limited | Voler Systems |
| Device driver or middleware development as part of a broader embedded program | Strong | Strong | Both equally |
| HMI development for an industrial or aviation-adjacent embedded product | Limited | Strong | Sigma Software Group |
| Fixed-price build | Limited | Limited | Both equally |
| Staff augmentation | Limited | Strong | Sigma Software Group |
Verdict: Voler Systems vs Sigma Software Group
Voler Systems (4.5/5) is the stronger overall choice for most Firmware Development projects. 46 years of continuous operation with a firmware practice built specifically around ultra-low-power wearable constraints.
Sigma Software Group (4.0/5) is worth a look if you need HMI development for an industrial or aviation-adjacent embedded product. If your situation matches that, Sigma Software Group is a competitive option.
Related comparisons
Voler Systems vs Sigma Software Group FAQ
Is Voler Systems better than Sigma Software Group?
Voler Systems (4.5/5) scores higher overall, but "better" depends on your use case. Voler Systems's strongest advantage: 46 years of operating history is unusually long for an independent firmware and electronics design house. Sigma Software Group's strongest advantage: 1,100-plus employees across Ukraine, Sweden, Poland, and the US give substantial delivery capacity and timezone coverage.
How do Voler Systems and Sigma Software Group differ in pricing?
Voler Systems uses project-based electronic and firmware design engagements pricing. Sigma Software Group uses project-based and staff augmentation engagements pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.
Which is better for enterprise: Voler Systems or Sigma Software Group?
Sigma Software Group 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 Voler Systems and Sigma Software Group?
Voler Systems's primary differentiator is: 46 years of continuous operation with a firmware practice built specifically around ultra-low-power wearable constraints. Sigma Software Group's primary differentiator is: majority Swedish ownership since 2006 combined with a 1,100-plus person multi-country delivery footprint. They also differ in team size (22 vs 1,100+), minimum engagement (Not published vs Not published), and primary industries served (Wearable technology, Medical devices vs Aviation, Gaming).
Verify all details directly with each company before making a decision.