K.R.O.K

I am the Customer Success Manager, at a company specializing in IT services.

We hired K.R.O.K to assist with Solana-based development, specifically to support smart contract implementation and integration within our project.

K.R.O.K was responsible for developing and integrating Solana smart contracts, setting up token functionality, and ensuring seamless interaction between the blockchain and our web application. Their main deliverables included smart contract deployment, on-chain testing, and backend integration to support the project’s core features. Their work was limited to backend and smart contract development for this project.

There were between two and five team members from K.R.O.K assigned to our project.

We found K.R.O.K through an online search and chose them because they offered good value for cost compared to other blockchain development companies we considered.

We've spent between $10,000 and $49,999.

The project with K.R.O.K began in January 2024 and is currently ongoing.

The measurable outcomes included the successful deployment and testing of Solana smart contracts, stable integration with our backend, and on-chain transactions functioning as intended. These milestones confirmed that the core blockchain components were delivered and operating correctly within the project’s infrastructure.

We observed steady improvements throughout the project, particularly in transaction processing speed and contract execution stability as optimizations were implemented. By the final stages, the metrics met and, in some cases, exceeded our initial expectations.

K.R.O.K’s project management was organized and transparent. They maintained clear communication, provided regular progress updates, and delivered their part of the project on time, meeting the agreed milestones and deadlines. We communicated via virtual meetings, emails, and messages.

The most impressive aspect was their deep technical expertise in Solana development and their ability to solve complex blockchain challenges efficiently. Their responsiveness and commitment to quality also made the collaboration smooth and productive.

Everything went smoothly with K.R.O.K. Their work was high-quality, on time, and met all expectations, and there were no issues or improvements needed.

I'm the co-founder and former CEO of The Divi Project, a blockchain company that produced a cryptocurrency called DIVI.

We had previously hired an American company that was supposedly full of superstar developers, and this company took all our money and delivered us nothing. We hired the K.R.O.K. team to start over from scratch to build the project, which they did very successfully.

We were recommended to them by two different online services, and after interviewing the founder Yuri, decided to hire him because he had promised to deliver in a very short time, and we were already late.

The project was to build a blockchain for our cryptocurrency which included forking another project and then adding a few new technologies that had never been built before in the blockchain space. The job seemed impossible at the time, and a team of several senior U.S. developers failed to deliver it at all after 5 months of trying.

We only communicated with the founder, but my impression was that he did the work himself along with a couple of employees.

The K.R.O.K. team delivered in around two months and everything worked beautifully. So, I can't really recommend them highly enough because they were amazing. They saved our project and for that I will always be grateful. If anyone has any doubts about their skill or honesty, please feel free to contact me personally so I can recommend them. Geoffrey of the Divi Project.

Top, top quality. Always available, fast to respond, and has continued to answer questions and help even years later as needed.

They delivered very high quality in every category. Best work, very fair price, done very quickly, and great communication and attitude.

No, they were amazing.

I'm the CTO of a digital Mental Healthcare provider

After a successful beta testing phase we required a team to develop our prototype app for iOS and Android.

K.R.O.K got recommended to us and it was great to work with them. On the initial calls the team came across as very knowledgeable and came with good suggestions to improve the app and the development process even before we started working together.

The key deliverable in the first phase was a app with our concept for digital mental health in it. After delivering this we required more features and user interaction points. We went through several development cycles from a basic version to a much more extended version.

We mainly worked with the owner of the company. He would divide the work-packages into tasks for his team. It worked very well to have a single point of contact

The produced app in QT for both iOS and Android is developed on a solid foundation, code is clean and inefficiencies have been removed. Very high quality.

They adjusted to our way of working and fitted perfectly in. It was like they were one of us with the company owner being our development manager. He put in a lot of effort to carefully understand our market and our needs. He's very precise in asking the right questions before starting with the code.

The speed with which they managed to develop in combination with the quality and maintainability of it. The communication was excellent, and they went the extra mile for us to deliver the best possible solution.

Not really, they delivered above our expectations. Thanks you did an amazing job.

I am the CEO of L’Atelier D’Ema. We provide software development services for the Bridge playing community.

We hire K.R.O.K to code bridge lessons delivery apps for Android and Windows using QT cross platform dev tools.

We posted project ad on Upwork. K.R.O.K contacted us with a proposal, we asked them to demo one of the required modules at no cost to us. They were swift in accomplishing the task. It was a ni. Rainer for us to hire them for the job.

K.R.O.K picked the cross platform tech, created the specs uaing our existing iOS apps, deliver finished Apps for Android and Windows that shared all the code. The critical aspect for the Android was building a custom web view to render part if the app content. The build in capabilities of the Android webviews were very limited.

Two full time coders (Java and C++) and QA person.

In two short months the App was in the hands of our users. In an other all bugs were cleaned out. It is 2022 now and the Apps are still going strong with no extra work.

Very easy to work with. I will point to features if our existing Apps provide the data structures the apps consume, and get nicely structured code that our in house maintains today.

Easy communication and there is no middle man PM , dev to dev open communication was critical to us. They were a vital part of our company for the duration of the project.

Even today I can not say ‘We should have done this differently’. Might be hard to believe but it is true.

I'm the Head of operations/Co-Founder of Soulshift

We wanted to launch a NFT collection in Solana Blockchain, given that period of time, there were shortage of rust developer in the market.

I was looking around through different channels, and fortunately I met Yuri. He took the initiative to solve all tech/development related issues that we had previously.

- NFT Generations - Candy Machine - Smart Contract Development - Pre and Post Launch Development

I entrust Yuri's leadership skills, he was the only point of contact that i had. and it was very smooth and fluent throughout the whole journey.

It was clear since the commencement of the project from Yuri's end, to know what needs to be done. In fact, the major changes or issues comes from my side as there were a lot of amendments, as well as changing of business models.

Flat management style, there's no separate levels of communication. Everything were smooth and instant.

Their flexibility and efficiency were impressive.

Set up a team in Asia, it will help clients to deal with timezone like myself !