Sigma Software Group vs Existek: full comparison for 2026
Last updated: July 2026
Quick verdict
Sigma Software Group (4.2/5) edges ahead of Existek (3.9/5) overall. Sigma Software Group is the better choice for automotive, aviation, and AdTech companies that need a large, vertically experienced IT consultancy with an AI practice.. Existek is the stronger option for mid-market companies wanting a Clutch-recognized offshore development firm with AI as an add-on service.. The right choice depends on your project size, budget, and required tech stack.
Sigma Software Group vs Existek: head-to-head summary
| Criterion | Sigma Software Group | Existek |
|---|---|---|
| Founded | 2002 | 2012 |
| HQ | Stockholm, Sweden | Bucharest, Romania |
| Team size | 2,100+ | 50–249 |
| Rating | 4.2 / 5 | 3.9 / 5 |
| Best for | Automotive, aviation, and AdTech companies that need a large, vertically experienced IT consultancy with an AI practice. | Mid-market companies wanting a Clutch-recognized offshore development firm with AI as an add-on service. |
| Pricing model | Time & materials, dedicated team | Project-based, dedicated team |
| Min. engagement | Not published | $25,000+ |
| Primary tech stack | Python, TensorFlow, AWS | Python, TensorFlow, AWS |
| Industries served | Automotive, Aviation, Gaming, Telecom, FinTech | Healthcare, Oil & Gas, Education, Business Intelligence |
Sigma Software Group vs Existek: overview
Sigma Software Group
Sigma Software Group was founded in 2002 and operates as a global software development and technology consulting company with more than 2,100 professionals across 40 offices in 19 countries; corporate headquarters is listed as Stockholm, Sweden with major operations centered in Kharkiv, Ukraine. The firm has built domain depth in AdTech, automotive, aviation, gaming, telecom, e-learning, FinTech, and PropTech over more than a decade of AI and machine learning work, and holds Clutch Global Award and Clutch Champion recognitions. Its scale and vertical breadth position it closer to a large enterprise IT consultancy than a boutique ML specialist.
Existek
Existek was founded in 2012 and operates with a 50–249 person team split across Bucharest, Romania and Vinnytsia, Ukraine, delivering custom software development, dedicated team staffing, and AI development services for clients in business intelligence, healthcare, oil & gas, and education. The company has been recognized by Clutch as a top developer in both Ukraine and Romania and holds a near-perfect 4.9 rating on the platform, with hourly rates of $50–$99/hr and a minimum project size of $25,000+. Its AI services page is comparatively general, offering less publicly documented technical specificity than boutique ML specialists in this list.
Services and capabilities: Sigma Software Group vs Existek
| Capability | Sigma Software Group | Existek |
|---|---|---|
| Custom ML Models | ✓ | ✓ |
| Computer Vision | ✗ | ✗ |
| NLP | ✗ | ✗ |
| MLOps | ✓ | ✗ |
| Generative AI | ✗ | ✗ |
| AI Consulting | ✓ | ✓ |
Tech stack comparison: Sigma Software Group vs Existek
| Framework / platform | Sigma Software Group | Existek |
|---|---|---|
| TensorFlow | ✓ | ✓ |
| PyTorch | N/A | N/A |
| AWS | ✓ | ✓ |
| Azure | ✓ | N/A |
| Google Cloud | N/A | N/A |
| LangChain | N/A | N/A |
| Hugging Face | N/A | N/A |
| Kubernetes | N/A | N/A |
Pricing comparison: Sigma Software Group vs Existek
| Criterion | Sigma Software Group | Existek |
|---|---|---|
| Minimum engagement | Not published | $25,000+ |
| Engagement models | Dedicated team, Time & materials, Staff augmentation | Project-based, Dedicated team |
| Rate transparency | Not public | Minimum disclosed |
| Price tier | Mid-market | Mid-market |
Target audience comparison: Sigma Software Group vs Existek
| Dimension | Sigma Software Group | Existek |
|---|---|---|
| Best company size | Startup to mid-market | Startup to mid-market |
| Best industries | Automotive, Aviation, Gaming | Healthcare, Oil & Gas, Education |
| Best use cases | Automotive or aviation company needs AI development from a vendor with genuine domain history in that sector., AdTech or gaming company needs ML at enterprise delivery scale. | Mid-market company wants a Clutch-recognized offshore vendor with a $25K+ entry point for an AI-adjacent project., Oil & gas or business intelligence company needs custom software plus AI/ML from a single vendor. |
| Typical project type | Dedicated team | Project-based |
Sigma Software Group vs Existek: pros and cons
| Sigma Software Group | |
|---|---|
| + | 2024 Spring Clutch Global Award and Clutch Champion recognitions are third-party validated distinctions. |
| + | Rare, genuine domain depth in automotive and aviation AI, verticals most ML boutiques don't touch. |
| + | 2,100+ professionals across 40 offices gives it enterprise-scale delivery capacity most boutiques lack. |
| + | 22+ years of company history (since 2002) predates the AI hiring wave, suggesting organic vertical expertise. |
| - | Corporate HQ is listed as Stockholm, but primary operational scale sits in Kharkiv, Ukraine — worth clarifying the contracting entity. |
| - | 2,100+ person scale means AI/ML is one practice among many verticals, not the firm's sole focus. |
| Existek | |
|---|---|
| + | 4.9 near-perfect Clutch rating with top-developer recognition in both Ukraine and Romania. |
| + | $25,000+ minimum project size is more accessible than large enterprise-only vendors like EPAM. |
| + | 12+ years of operating history (since 2012) with dual-country delivery presence. |
| + | Serves niche industries (oil & gas, business intelligence) less commonly covered by boutique AI specialists. |
| - | Publicly available technical detail on Existek's specific AI/ML methodology is thinner than boutique specialists like Neurons Lab or Provectus. |
| - | AI development is one of several service lines (custom software, staff augmentation) rather than the firm's exclusive focus. |
Who should choose Sigma Software Group?
Sigma Software Group is the right choice for automotive, aviation, and AdTech companies that need a large, vertically experienced IT consultancy with an AI practice..
Deep, decade-plus domain expertise in AdTech, automotive, and aviation combined with enterprise-scale delivery capacity.. Minimum engagement starts at Not published. Works best with clients in Automotive, Aviation, Gaming, Telecom, FinTech.
Who should choose Existek?
Existek is the right choice for mid-market companies wanting a Clutch-recognized offshore development firm with AI as an add-on service..
4.9 Clutch rating with dual Ukraine/Romania Clutch top-developer recognition and a $25,000+ accessible entry point.. Minimum engagement starts at $25,000+. Works best with clients in Healthcare, Oil & Gas, Education, Business Intelligence.
Decision matrix: Sigma Software Group vs Existek
| 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 Group |
| Your budget is at the lower end | Compare: Sigma Software Group (Not published) vs Existek ($25,000+) |
| You need specialist depth in a specific vertical | Sigma Software Group |
| You need production MLOps support after model launch | Sigma Software Group |
| You need consulting before committing to a build | Sigma Software Group |
Use case fit: Sigma Software Group vs Existek
| Use case | Sigma Software Group fit | Existek fit | Winner |
|---|---|---|---|
| Automotive or aviation company needs AI development from a vendor with genuine domain history in that sector. | Strong | Limited | Sigma Software Group |
| AdTech or gaming company needs ML at enterprise delivery scale. | Strong | Limited | Sigma Software Group |
| Mid-market company wants a Clutch-recognized offshore vendor with a $25K+ entry point for an AI-adjacent project. | Limited | Strong | Existek |
| Oil & gas or business intelligence company needs custom software plus AI/ML from a single vendor. | Limited | Strong | Existek |
| Fixed-scope ML build | Limited | Limited | Both equally |
| Ongoing model retraining | Limited | Limited | Both equally |
Verdict: Sigma Software Group vs Existek
Sigma Software Group (4.2/5) is the stronger overall choice for most Machine Learning Development projects. Deep, decade-plus domain expertise in AdTech, automotive, and aviation combined with enterprise-scale delivery capacity.. It is best for automotive, aviation, and AdTech companies that need a large, vertically experienced IT consultancy with an AI practice..
Existek (3.9/5) is the better choice when mid-market companies wanting a Clutch-recognized offshore development firm with AI as an add-on service.. If your situation matches those criteria, Existek is a competitive option.
Related comparisons
Sigma Software Group vs Existek FAQ
Is Sigma Software Group better than Existek?
Sigma Software Group (4.2/5) scores higher overall, but "better" depends on your use case. Sigma Software Group is better for automotive, aviation, and AdTech companies that need a large, vertically experienced IT consultancy with an AI practice.. Existek is better for mid-market companies wanting a Clutch-recognized offshore development firm with AI as an add-on service..
How do Sigma Software Group and Existek differ in pricing?
Sigma Software Group uses time & materials, dedicated team pricing with a minimum engagement of Not published. Existek uses project-based, dedicated team pricing with a minimum engagement of $25,000+. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.
Which is better for enterprise: Sigma Software Group or Existek?
Existek 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 Group and Existek?
Sigma Software Group's primary differentiator is: deep, decade-plus domain expertise in adtech, automotive, and aviation combined with enterprise-scale delivery capacity.. Existek's primary differentiator is: 4.9 clutch rating with dual ukraine/romania clutch top-developer recognition and a $25,000+ accessible entry point.. They also differ in team size (2,100+ vs 50–249), minimum engagement (Not published vs $25,000+), and primary industries served (Automotive, Aviation vs Healthcare, Oil & Gas).
Last reviewed: July 2026. Verify all details directly with each company before making a decision.