Oleg Sotnikov CEO at AppMaster

5.0★

AI Development Review from Oleg Sotnikov

Diffco built a complex, production-grade AI agentic system and backend for our client's fintech platform owning architecture, AI/ML components, and AI agents in a security- and compliance-sensitive environment. They delivered on time and within budget, communicated proactively, and operated like part of our own team, taking ownership and suggesting better solutions throughout. Deep AI/ML and senior backend expertise. We'd happily work with them again.

Julia Platova VP Strategic Partnerships at OVA Solutions

5.0★

Mobile App Development Review from Julia Platova

We partnered with Diffco for a comprehensive software development project aimed at delivering a mobile application and backend system for our client. The goal was to create a seamless, secure, and scalable solution within a 4-month timeline and $50k-$200k budget.Diffcos team was highly professional from start to finish. They handled everything: UI/UX design, backend architecture, API integration, and deployment.After the launch, they continued to support us with maintenance and performance optimization.The application received positive feedback and has proven stable and scalable.Were highly satisfied with Diffcos expertise, commitment, and ability to deliver real results.

Max Shmatkov Manager at Centerligh

5.0★

Mobile App Development Review from Max Shmatkov

As an advantage of working with this company I’d like to note that their Agile development method is amazing! Diffco earned my trust through such approach and the team’s professional attitude.

Bart Cassidy Attorney at Manko, Gold, Katcher & Fox, LLP at MANKO | GOLD | KATCHER | FOX LLP

5.0★

Web Development Review from Bart Cassidy

We are is satisfied with the engagement; Hexagon IT Solutions has delivered the web on time and within budget. The team excels in their communication and understanding of the requirements; they solve any issue that arises. Overall, they stand out for their quality work; customers can expect great service.

Dominique Dujardin VP IT Shared Services Europe chez XPO Logistics Europe at XPO Logistics Europe

5.0★

Software Development Review from Dominique Dujardin

The product was developed successfully and has been undergoing pilot usage. Hexagon IT Solutions managed the engagement effectively, delegating tasks and assignments between us and the team. They met timelines and communicated efficiently through Slack. Their resources also resolved bugs quickly.Hexagon makes it easy for people trying to develop software. Ultimately, Hexagon was and has been on the same page with us from the beginning. They knew exactly what we were looking for, and what we didn't want. Other software development firms jumped at us with marketing proposals, designers, and irrelevant business consulting. Hexagon IT Solutions took the time to understand who we are and offer us their services accordingly.

Edona Haliti FOUNDER at Electric Mobility LLC

5.0★

Software Development Review from Edona Haliti

Thanks to Hexagon IT Solutions work, we have witnessed an enhanced performance in our software and received positive feedback from end customers. They have communicated and responded promptly, ensuring an effective workflow. Their efficiency and timely delivery have been hallmarks of their work.Communication and Response time, and the execution. They have provided us with quality of work within the stipulated time. Their affordable rates are a cherry on the cake. It's difficult to find these kinds of perfect combinations.

Undisclosed Manager at Internet Provider

5.0★

Web Development Review from Undisclosed

The client has reaped significant benefits from Codup.co's top-notch, scalable coding assistance over the years, irrespective of the geographical distance. Throughout their partnership, Codup.co has offered the enterprise substantial savings in time, resources, and finances. Moreover, the quality of its services has shown consistent enhancement over time.

Undisclosed Owner at Business Services Company

5.0★

eCommerce Development Review from Undisclosed

The team efficiently accomplished all tasks assigned to them, demonstrating superior communication skills. Due to their efforts, two online marketplace tools were seamlessly integrated. It was evident that they had a keen understanding of the our needs.

Paul C Impellizeri VP of Digital Services at Great Big Digital Agency

5.0★

Web Development Review from Paul C Impellizeri

We worked with Codup in migrating over 20+ websites over to [WordPress]. Zaheer and Raheel were excellent project managers and the team worked quickly and efficiently. Their developers are great at troubleshooting and solving issues fast. We would recommend them for any [WordPress] project! (Verified via email)

Iryna Liashko Digital Marketing Specialist at SoloWay Technologies

5.0★

Software Development Review from Iryna Liashko

We engaged Acropolium as a development partner to support delivery of a SaaS-based warehouse management system for our end client. They handled key backend components, third-party integrations, and overall system architecture alignment. The engagement ran from May to September 2025.Acropolium took full ownership of complex technical components and worked as a seamless extension of our internal team from day one. They required minimal supervision, communicated proactively, and adapted well to changing requirements throughout the project.The results were strong: our end client saw a 30%+ improvement in order processing efficiency, a significant reduction in manual operations and errors, and smooth integration with existing systems.We were thoroughly impressed by their technical quality, reliable delivery, and professional approach. Deadlines were consistently met, and the team responded quickly to feedback. The collaboration was smooth from start to finish.We would confidently work with Acropolium again and highly recommend them as a trusted software development partner.

Viacheslav Koziura Product owner at RSQD AI

5.0★

Startups Software Development Review from Viacheslav Koziura

Acropolium provided a highly skilled team for our short-term project. We had strict deadlines, and they helped us deliver everything on time. Beyond just supplying developers, they also contributed valuable expertise that improved the overall outcome. It was a smooth and professional collaboration.

Oleksandr Romanov Founder & CEO at Idea Team

5.0★

Node.js Review from Oleksandr Romanov

We partnered with the team to support the integration of AI capabilities into our existing Node.js tech stack, and the experience exceeded our expectations. From the very beginning, they demonstrated a strong understanding of both backend architecture and modern AI tools, which allowed them to quickly align with our business goals.Their approach was structured and transparent: they helped us choose the right AI models, designed scalable integration flows, and ensured smooth interaction between services without compromising performance. Communication was consistent, deadlines were met, and any challenges were addressed proactively.What stood out the most was their ability to bridge the gap between complex AI concepts and practical implementation within a real production environment. As a result, we significantly improved our products functionality and reduced time-to-market for new features.I would highly recommend this team to anyone looking to integrate AI into a Node.js-based system in a reliable and efficient way.

Daria Stolyar Manager at Custom Software Development Company

5.0★

Software Development Review from Daria Stolyar

We hired Altoros engineers as an essential extension of our client-facing internal teams. This was a tough decision because our reputation as a brand depends on the overall efficiency of our processes and we needed to make sure all risks are mitigated when it comes to delivery. Altoros has not let us down.Together with Altorosians we successfully deployed a number of tough and technologically complex projects on time. So our collaboration is certainly set to continue.

Victoria Lewis Director at Equine Affairs Ltd

3.5★

Software Development Review from Victoria Lewis

We enjoy working with our team, Roman Yurkin, Tatyana Kobzar, Svetlana Kalchanka and Tatiana Anop. They bring expertise and immense value to our business with each piece of work they complete. They are a major part of our business development and delivery.

Greg Lipper Managing Director at Happi Pte Ltd

5.0★

Ruby on Rails Review from Greg Lipper

In my 30 years in the software business, I have never had as positive an experience with an outsourced development services provider as I have with Altoros. Each Altoros engineer we have worked with has been strong technically, estimated development times accurately, completed projects on time, and delivered code and projects with high quality. Beyond that, they have helped improve our thinking and approach with suggestions and ideas that were better than the spec of instructions we supplied.

Sergey Novik Co-Founder at El Pixel

5.0★

Staff Augmentation Review from Sergey Novik

Were developing an internal image processing tool for our design team and needed two machine learning engineers, since our core developers were busy with other client projects. We required extra hands familiar with Python and computer vision, so after a developers market review, we hired them from SumatoSoft.The SumatoSoft developers joined our team and were able to swiftly adapt to our workflows, which resulted in them delivering the working models well before our hard deadline.Communication was straightforward throughout the engagement. We had video calls and exchanged brief text updates on a weekly basis. The delivered code is clean, and pull requests are well-documented.I appreciate that they pushed back on a few of our initial architecture ideas. They challenged our original approach and proposed a better method for handling the model weights. We plan to bring them back for the next phase of development.

Domien Van Eynde Team Lead at Daiokan

5.0★

Web Development Review from Domien Van Eynde

SumatoSoft is the firm to work with if you want to keep up to high standards. The professional workflows they stick to result in exceptional quality. Important, they help you think with the business logic of your application and they don’t blindly follow what you are saying. Which is super important. Overall, great skills, good communication, and happy with the results so far.

Alexander McCaig Co-Founder & CEO at Tartle

5.0★

eCommerce Development Review from Alexander McCaig

The system has produced a significant competitive advantage in the industry thanks to SumatoSoft’s well-thought opinions. They shouldered the burden of constantly updating a project management tool with a high level of detail and were committed to producing the best possible solution.