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Updated October 2026
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#1“QualityLogic is highly efficient in their testing work. They put a lot of effort, and compared to the other quality testing vendors we’ve had, QualityLogic provides 10x the amount of work as other teams. QualityLogic is the best QA team…”
#2Sirma Group, a leading Bulgarian IT conglomerate, excels in transforming businesses into Intelligent Enterprises with its unique software solutions. With over 800 skilled professionals, Sirma has successfully executed hundreds of projects globally, earning a stellar 4.8/5 rating on Clutch from 25 reviews. - **Global reach:** Serving clients worldwide across diverse industries including travel, hospitality, logistics, and supply chain. - **Technological expertise:** Specializes in AI, machine learning, and cloud services for seamless digital transformations. - **Comprehensive service offerings:** Provides logistics consulting, custom software development, and IT strategy consulting among others. - **Client satisfaction:** Notable clients include Peoplevine, Groups360, and Ligentia, highlighting their trust in Sirma's capabilities. - **Established foundation:** Founded in 1992, Sirma has over three decades of experience in the IT industry. Sirma's commitment to mastering data and knowledge through cutting-edge technologies ensures sustainable growth and long-term partnerships with its clients.