Heberto Limas-Villers President at Colorado Sports Video

5.0★

Web Development Review from Heberto Limas-Villers

Onix was our choice for the improvement of the company's website as part of our expansion into other states. They did a very good job of understanding my requirements and had several solutions for our needs. We had to automate a large part of the back end of the website, and they did a fabulous job with that. Communication with them was seamless, and they were very organised and diligent throughout the process. (Verified via email)

Justin Zimmerman SAP Manager at Haas Automation

5.0★

Mobile App Development Review from Justin Zimmerman

Onix and Haas Automation have worked together for five years. To meet our iOS and Android development needs, Onix provides us with exceptional resources. Their technical team increases the efficiency of our entire mobile development team by sharing information and training our in-house developers. Their developers are very experienced, insightful, easy to work with, and communicative. (Verified via email)

Jonah Fialkow CEO at Bracketology

5.0★

Mobile App Development Review from Jonah Fialkow

They have always gone above and beyond the call of duty and truly see themselves as an extension of the team at our company.

Slava Kostiuk Full-Stack (Python, Node.js, React) Developer and Flutter+Java+AI+AR Developer at UDS Systems

5.0★

Software Development Review from Slava Kostiuk

We initially approached UASOFTDEV with a relatively straightforward request: a WordPress website and a Senior React/Node/Python Developer for backend and API development. What impressed us immediately was how quickly they understood our needs and delivered relevant candidates. We received the first 5 candidates within 60 hours, exactly as promised. The developers were skilled, experienced, and cost-efficient, so we decided to continue working with UASOFTDEV. Later, we returned with a much more complex project: an already-live AI beauty ecosystem combining a Smart Mirror, mobile app, AI skin analyzer, and AR makeup. This required a Senior Flutter Engineer who could join an existing team and work with Flutter, Banuba SDK, Java/native technologies, and a production environment. UASOFTDEV matched us with a senior Flutter engineer within 60 hours. He integrated quickly into our existing team and provided the 24/7 production support we needed. During the 5.5-month engagement, we delivered 10+ major features, shipped 15+ releases across 3 product environments, and launched 2 premium subscription features. What we valued most was the consistency of their approach. Production issues and new feature requests were handled quickly, communication was personal and responsive, and the team remained highly engaged throughout both projects. The fact that we came back to UASOFTDEV with a second, significantly more technically demanding AI/AR project is probably the strongest proof of our satisfaction. They successfully scaled from a simple staffing request to supporting a complex live product without losing the same level of responsiveness, quality, and personal attention.

Khrystyna Sliana Digital Marketing Manager at Red Jumpers Agency

5.0★

DevOps Consulting Review from Khrystyna Sliana

We hired a DevOps engineer from UASOFTDEV to handle a multi-entity AWS infrastructure split. The project was completed on schedule, with zero downtime and great attention to security and data integrity. Recommended.

Leonid Viktorov СЕО at Biz Adviser

5.0★

Dedicated Team Augmentation Review from Leonid Viktorov

I am the CEO of Biz Adviser, a business consulting company. We work with companies on strategic business initiatives, digital transformation, and improving business performance. We partnered with UASOFTDEV when we urgently needed additional engineering capacity. I was looking for proven senior developers and did not have time to spend weeks sourcing candidates and conducting multiple interviews. UASOFTDEV offered to provide vetted Ukrainian developers within 60 hours, which was exactly what we needed. The team provided senior engineers with strong technical expertise and excellent communication skills. We worked with developers across PHP, Node.js, Python, and React, depending on the project requirements. They were reliable, proactive, and able to understand not only the technical tasks but also the broader business context. The developers contributed to several important initiatives, including the implementation of an AI agent, and helped us move projects forward faster while keeping development costs under control. UASOFTDEV delivered what they promised. The process was straightforward, communication was reliable, and the developers were able to start working quickly without compromising on quality. The pricing was a good fit for our budget, and the overall value for cost was excellent. I also appreciated the cultural fit and the team's ability to communicate effectively and take ownership of their work. I would definitely recommend UASOFTDEV to companies looking for reliable staff augmentation with senior Ukrainian developers. They are a trustworthy partner that can provide strong engineering talent quickly and help businesses deliver important initiatives without the overhead of a lengthy hiring process.