K.R.O.K

Name: K.R.O.K
Address: L'viv, Ukraine
Price range: $25 - $49 / hr
Rating: 5

Premier Verified

Blockchain | DeFi | NFT | Startups

5.0

9 Reviews

Visit Website Packages Contact Claim This Profile

Min. Project $10,000+

Hourly Rate $25 - $49 / hr

Employees 1-10

Locations L'viv, Ukraine

Founded 2017

Languages English, Ukrainian

About

Blockchain | DeFi | NFT | Startups

K.R.O.K brings together a team of dedicated blockchain specialists who focus entirely on building solutions in this space. The company carefully matches developers to each project, working closely with clients as an extended version of their team. With a vivid focus on emerging technologies, they deliver creative and practical solutions... Read More

Their responsiveness and commitment to quality also made the collaboration smooth and productive.

Service Mix

Pricing

Pricing Snapshot

Min. Project $10,000+

Avg. Hourly $25 - $49 / hr

Cost Rating 5.0/5

What Clients Have Said

"They delivered very high quality in every category."

Projects

Most Common Project Size

$0 – $50,000

Based on 9 reviews

Compare

Where K.R.O.K Competes

K.R.O.K is listed in 3 categories on 10Firms. Browse each category to see how it ranks against other verified providers, or view its packages and pricing.

Top Custom Software Development Companies Top Mobile App Development Companies Top Blockchain Companies

View K.R.O.K packages & pricing | How we rank companies | How reviews are verified

Reviews

K.R.O.K Client Reviews

Layer 2 Solution Dev for BTC-Forked Private Blockchain

Aug 06, 2026

The Project

Blockchain

$10,000 to $49,999

Apr. - Aug. 2025

Project Summary

K.R.O.K developed a Layer 2 (L2) solution for a BTC-forked private blockchain. The team conducted comprehensive testing, delivered documentation, and demonstrated a deep understanding of blockchain technology.

The Review

"They have unique expertise in bitcoin-based solutions."

Feedback Summary

K.R.O.K delivered the L2 solution on time, within budget, and with high performance and functionality. The team replied promptly to the client's queries and provided exceptional support during the research and design phases. Moreover, K.R.O.K's professionalism was evident throughout the engagement.

5

Quality 5

Schedule 5

Cost 5

Use of AI 5

Willing to Refer 5

I

The Reviewer

Ivan Solomichev

Development Manager at Private blockchain

Please describe your company and position.

I am the Development Manager of Private blockchain

Describe what your company does in a single sentence.

Develops a private blockchain wiht multiple sub-projects

How did you find K.R.O.K?

Referral

How many teammates from K.R.O.K were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

The objective of the project was to develop a Layer 2 (L2) solution for a BTC-forked private blockchain. The Krok team provided exceptional support throughout the research and design phases, ultimately recommending and implementing the Runes-based approach. Their professionalism was evident in every stage of collaboration - from regular sync meetings to prompt resolution of clarifications and blockers, ensuring a smooth and transparent development process. In addition, the Krok team conducted comprehensive testing, delivered high-quality documentation, and consistently demonstrated a deep understanding of blockchain technology and best practices. The results met all expectations in terms of both quality and timeline, making the engagement with Krok highly productive and successful.

What were the measurable outcomes from the project that demonstrate progress or success?

The L2 solution was delivered on time, within budget, and met all performance and functionality objectives defined at the project’s start.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

We had regular sync, discussions. They replied promptly

What was your primary form of communication with K.R.O.K?

Email or Messaging App

What did you find most impressive or unique about this company?

They have unique expertise in bitcoin-based solutions.

Are there any areas for improvement or something K.R.O.K could have done differently?

n/a

Blockchain & API Development for Software Co

Aug 06, 2026

The Project

API Development

$10,000 to $49,999

Apr. - Sep. 2024

Project Summary

K.R.O.K provided blockchain development services for a software company. The team helped the client with the backend realization in Rust, including the smart contract level.

The Review

"K.R.O.K's excellent quality for a fair price impressed us."

Feedback Summary

K.R.O.K delivered quality work at a fair price. The team provided daily code commitments and weekly status meetings. Moreover, the team communicated effectively via virtual meetings, met deadlines, and was transparent regarding timelines. Overall, the team's work met the client's expectations.

5

Quality 5

Schedule 5

Cost 5

Use of AI 5

Willing to Refer 5

A

The Reviewer

Anonymous

Managing Partner at Software Co

Please describe your company and position.

I am the Managing Partner of a software company

Describe what your company does in a single sentence.

Web3 Software Development Company

How did you find K.R.O.K?

Referral

How many teammates from K.R.O.K were assigned to this project?

1 Employee

Describe the scope of work in detail. Please include a summary of key deliverables.

Providing assistance on the Backend Realization in Rust including the smart contract level (Solana-based project)

What were the measurable outcomes from the project that demonstrate progress or success?

Live requirement and feedback sessions with the team.Daily code commitment.Weekly status meetings and updates from the team.Project plan progress and demo sessions after each sprint.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Spot on communication, budget, and expectations management. We had a Project Plan, and the delivery process was based on sprints and milestones. Even if there

What was your primary form of communication with K.R.O.K?

Virtual Meeting

What did you find most impressive or unique about this company?

K.R.O.K's excellent quality for a fair price impressed us.

Are there any areas for improvement or something K.R.O.K could have done differently?

All is good so far

Solana-Based Web App Dev & UX/UI Design for AI Company

Aug 06, 2026

The Project

Blockchain

$10,000 to $49,999

Feb. - July 2024

Project Summary

K.R.O.K designed and developed a Solana-based swap web app for an AI company. The team integrated Jupiter, wallet connections, natural language processing, and smart contract interactions.

The Review

"I found their dedication to maintaining meetings and hitting deadlines unique."

Feedback Summary

K.R.O.K delivered a high-quality web app within the required timeframe, budget, and scope. The team was responsive to feedback and professional, communicating primarily via virtual meetings, emails, and messaging apps. Their dedication impressed the client, resulting in a positive engagement.

5

Quality 5

Schedule 5

Cost 5

Use of AI 5

Willing to Refer 5

A

The Reviewer

Anonymous

Executive at Tri Solutions

Please describe your company and position.

I am an Executive of Tri Solutions

Describe what your company does in a single sentence.

AI development company focused on consumer applications.

How did you find K.R.O.K?

Online Search

How many teammates from K.R.O.K were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

The scope of work was to develop and design a Solana based swap bot that integrated with Jupiter using natural language processing to perform swaps. The deliverable was a web app complete with wallet connections, natural language processing, and smart contract interactions.

What were the measurable outcomes from the project that demonstrate progress or success?

-Delivered the web app in the required timeframe.-Iterated on development to get the application finetuned and working smoothly.-Presented working product with full integrations, as specified in the initial documentation.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Everything was managed very well. We had timely meetings, everything promised was delivered on time, and everything was kept within the initial budget amount that was laid out.

What did you find most impressive or unique about this company?

I found their dedication to maintaining meetings and hitting deadlines unique, having worked with many other teams that did not deliver the same quality of service.

Are there any areas for improvement or something K.R.O.K could have done differently?

No recommendations for improvement. Everything was executed professionally and to a high standard.

Custom Software Dev for DAO Marketplace

Aug 06, 2026

The Project

Custom Software Development

$10,000 to $49,999

Jan. 2021 - Ongoing

Project Summary

K.R.O.K. provides custom software development for an NFT marketplace. The team also tests and deploys smart contracts integrated from alpha to functional V1.

The Review

"K.R.O.K.'s both hard and soft skills are commendable."

Feedback Summary

So far, K.R.O.K. has helped the client achieve their goals and have an early version of the projected platform. The team seamlessly collaborates and communicates while delivering solutions on time. Overall, their skills are outstanding.

5

Quality 5

Schedule 5

Cost 5

Use of AI 5

Willing to Refer 5

E

The Reviewer

Eloi Henrard

CEO at Talis

Please describe your company and your position there.

Talis Protocol is an Terra based NFT Marketplace connecting web3 and physical world.

For what projects/services did your company hire K.R.O.K, and what were your goals?

Creation, tests and deployment of SmartContracts based on Coswasm environment.

How did you select this vendor and what were the deciding factors?

After long talks with several so called Smart Contract Engineers we met K.R.O.K which seemed to know its field and the ecosystem behind it.

Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.

Developped in Rust and following a precise set of specifications, our smartcontracts were iterated from alpha to functional V1 following a thorough process of testing and valdiating.

How many people from the vendor's team worked with you, and what were their positions?

2 smart contract engineers

Can you share any measurable outcomes of the project or general feedback about the deliverables?

Thanks to KROK we've been able to achieve our goals and create the early version of the Markletplace we're thriving for.

Describe their project management style, including communication tools and timeliness.

They perfectly adapted to our communication media and organization and delivered regularly explaining the deliverables as they were included.

What did you find most impressive or unique about this company?

Adaptation and competency. K.R.O.K.'s both hard and soft skills are commendable.

Are there any areas for improvement or something they could have done differently?

At first, we lacked a thorough process and extra clear communication but this was resolved at the first discussion about it.

Get in Touch

Project Inquiry

Got a project inquiry or need details about K.R.O.K? Let them know.

Connect

Connect with K.R.O.K

Linkedin Facebook Instagram