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Blockchain development

Cowchain is a full-stack Web3 development company with 50+ developers, designers, and blockchain experts across Europe.
120+ projects delivered – from MVPs to ecosystems with millions of users. We’ve helped clients manage $180M+ in total market cap and $20M+ in daily trading volume.

Key Achievements:
▫️RetroBridge – cross-chain bridge with 30+ integrations
▫️AGNT Hub – AI-powered Web3 execution layer inside X (Twitter)
▫️StepApp – Move2Earn ecosystem with 9M+ users
▫️Pixelverse – Telegram-based gaming ecosystem with 45M+ users
▫️GBC DAO (GMX) – largest GMX-focused DAO
▫️TENET – Layer 1 blockchain built on Cosmos SDK
▫️Hybrid – Ethereum-based Layer 2 with AI agents
▫️Raiser – premium launchpad platform
▫️BRC20.com – first launchpad for Ordinals
▫️Launchpads raising tens of millions in days
▫️L2 testnets with hundreds of millions of transactions
▫️Telegram bots & mini-apps with 1M+ MAU
▫️Crypto banking projects with no-KYC cards and fiat rails

Services We Offer:
🛠 Development – Full-cycle blockchain dev: smart contracts, front/back-end, integrations
⚙️ DevOps – Post-launch support, scaling, optimization
🛠 Ready-made solutions – Pre-built modules for faster deployment
🔐 Security – Smart contract audits, secure architecture
🎨 Design – UI/UX tailored for Web3
🧩 Consulting – Tokenomics, product strategy, project direction, web3 marketing
🤖 Web3 projects with integrated AI solutions
💳 Neobank solutions – apps with no-KYC crypto cards and fiat rails

Tech Stack:
🖥 Front-end: React.js, Next.js, JavaScript, Tailwind CSS
🔧 Back-end: Node.js, Express, Nest.js, Microservices
🗄 Databases: MongoDB, MySQL, PostgreSQL
💎 Blockchain: Ethereum, Polygon, Avalanche, Solana, BSC, Bitcoin, TON, Near
☁️ Cloud: AWS, Azure, Google Cloud
⚙️ Infra: Docker, Kubernetes, TheGraph (Subgraphs), event indexing

Cowchain – let’s make web3 tech work for you.

Website - cowchain.io
Email - [email protected]
Telegram - @Inna_Cowchain_PRM

Certifications/Compliance

ISO 9001:2015
ISO 27001
CMMI Level 2
CMMI Level 3
CMMI Level 4
CMMI Level 5
Great Place To Work
Poland Poland
Tytusa Chalubinskiego 8, Warsaw, Warsaw 00613
+48570254190
$50 - $99/hr
50 - 249
2021

Service Focus

Focus of Blockchain Development
  • Smart Contract Development - 25%
  • Private Blockchain Development - 5%
  • Ethereum - 5%
  • Hyperledger - 5%
  • ICO Consulting - 10%
  • Cryptocurrency Exchange - 10%
  • Wallet Development - 15%
  • Solidity - 10%
  • Blockchain Consulting - 5%
  • NFT Token Development - 5%
  • NFT Marketplace Development - 5%
Focus of Web3
  • DApp Development - 25%
  • DeFi Development - 25%
  • Multi Chain App Development - 25%
  • Web3 Development - 25%
Focus of Software Development
  • Javascript - 15%
  • Node.js - 15%
  • ReactJS - 15%
  • MongoDB - 10%
  • Redis - 10%
  • Rust - 20%
  • TypeScript - 15%

Industry Focus

  • Financial & Payments - 20%
  • Gaming - 20%
  • Startups - 20%
  • Banking - 20%
  • Real Estate - 15%
  • Other Industries - 5%

Client Focus

70% Small Business
30% Medium Business

Review Analytics of Cowchain

5
Total Reviews
5.0/5
Overall Rating
5
Recent Reviews

What Users Say

Cowchain is a rare team that truly understands blockchain math and builds top-tier infrastructure.
Anastasiia Chebaniuk
Anastasiia Chebaniuk
A top-tier technical partner that prioritizes security and code integrity above all else.
Anonymous
A top-tier technical partner that prioritizes security and code integrity above all else.
HANNA KO
HANNA KO , Operations manager at SellX10
Exceptional technical execution with a focus on security and rapid deployment.
Ihor Palteka
Ihor Palteka
Professional, high-speed execution with a deep understanding of Web3 architecture and product logic.
Anna Korobkyna
Anna Korobkyna , Business Development Manager at Protectimus Limited

What Users Like The Most

  • Their transparency and attention to security audits. They don't just write code; they stress-test every scenario. We felt confident throughout the development cycle thanks to their detailed reporting and deep domain expertise.
  • Their transparency and attention to security audits. They don't just write code; they stress-test every scenario. We felt confident throughout the development cycle thanks to their detailed reporting and deep domain expertise.
  • Their technical depth. Most agencies only know how to build simple dApps, but Cowchain can handle complex infrastructure and protocol-level development. Their communication is direct, honest, and highly professional.

What Users Like The Least

  • They are very selective about the technologies they use to ensure stability. While it limits some "experimental" features, it resulted in a rock-solid platform that handled millions in volume.
  • They are very selective about the technologies they use to ensure stability. While it limits some "experimental" features, it resulted in a rock-solid platform that handled millions in volume.
  • They are very focused on the technical core, so sometimes we had to push for more frequent visual updates on the frontend. However, the quality of the "under the hood" work more than made up for it.

Detailed Reviews of Cowchain

5.0 5 Reviews
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  • Blockchain Development
  • Software Development
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  • Most Recent
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  • Rating: low to high
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Anastasiia Chebaniuk
Anastasiia Chebaniuk
Posted 2 weeks ago

Cowchain is a rare team that truly understands blockchain math and builds top-tier infrastructure.

Working with Cowchain was a seamless
experience. They took a very complex R&D
task and broke it down into manageable
milestones. Their technical lead is
exceptionally knowledgeable about Bitcoin
protocols and Ordinals. They built a custom
indexer that outperformed our previous solution
in terms of speed and data accuracy. It’s clear
they are "builders" who care about the
long-term stability of the product.

What was the project name that you have worked with Cowchain?

Bitcoin Ecosystem Infrastructure&Custom Indexer Development

What service was provided as part of the project?

Blockchain Development, Web3

Describe your project in brief

Our goal was to build a specialized
infrastructure for the Bitcoin ecosystem,
including a custom indexer and a platform for
managing digital assets. We needed a team
that deeply understands low-level blockchain
protocols and can deliver a high-performance
backend.

What is it about the company that you appreciate the most?

Their technical depth. Most agencies only know how to build simple dApps, but Cowchain can handle complex infrastructure and protocol-level development. Their communication is direct, honest, and highly professional.

What was it about the company that you didn't like which they should do better?

They are very focused on the technical core, so sometimes we had to push for more frequent visual updates on the frontend. However, the quality of the "under the hood" work more than made up for it.

Rating Breakdown

  • Quality
  • Schedule & Timing
  • Communication
  • Overall Rating

Project Detail

  • $50001 to $200000
  • Completed
  • Other Industries
Ihor Palteka
Ihor Palteka
Posted 1 month ago

Exceptional technical execution with a focus on security and rapid deployment.

Cowchain proved to be an invaluable technical partner. They didn't just build the product; they optimized our entire architecture for better performance and lower gas costs. Their experience with Tier-1 projects was evident in how they handled security and edge cases. They delivered a production-ready MVP much faster than our internal estimates suggested.

What was the project name that you have worked with Cowchain?

High-Load Web3 Backend & Smart Contract Infrastructure

What service was provided as part of the project?

Software Development, Blockchain Development, Web3

Describe your project in brief

We engaged Cowchain to develop the core technical infrastructure for our DeFi platform. The project involved complex smart contract logic, real-time on-chain data monitoring, and a highly secure backend architecture.

What is it about the company that you appreciate the most?

Their deep technical stack and proactive problem-solving. They don't wait for instructions — they suggest the most efficient way to build a feature. Communication was lightning-fast via Slack.

What was it about the company that you didn't like which they should do better?

The team is very focused on technical delivery, so initial discovery sessions are very intense and detail-oriented. However, this level of rigor is exactly why the final product was so stable.

Rating Breakdown

  • Quality
  • Schedule & Timing
  • Communication
  • Overall Rating

Project Detail

  • $10001 to $50000
  • Completed
  • Financial & Payments
HANNA KO
HANNA KO, Operations manager at SellX10
Posted 1 month ago

A top-tier technical partner that prioritizes security and code integrity above all else.

Our experience with Cowchain was excellent. Dealing with financial assets requires zero-fault tolerance, and their team delivered exactly that. They architected complex staking mechanisms and multi-signature wallet integrations. Their deep understanding of the Ordinals infrastructure and BRC20 standards helped us launch a market-leading product ahead of the competition.

What was the project name that you have worked with Cowchain?

DeFi Launchpad & Multi-chain Token Management System

What service was provided as part of the project?

Software Development, Blockchain Development, Web3

Describe your project in brief

We hired Cowchain to build a premium launchpad for Tier-1 projects. The goal was to create a secure environment for token sales, staking, and cross-chain integrations with high transparency and safety for investors.

What is it about the company that you appreciate the most?

Their transparency and attention to security audits. They don't just write code; they stress-test every scenario. We felt confident throughout the development cycle thanks to their detailed reporting and deep domain expertise.

What was it about the company that you didn't like which they should do better?

They are very selective about the technologies they use to ensure stability. While it limits some "experimental" features, it resulted in a rock-solid platform that handled millions in volume.

Rating Breakdown

  • Quality
  • Schedule & Timing
  • Communication
  • Overall Rating

Project Detail

  • $50001 to $200000
  • Completed
  • Financial & Payments
Anonymous
Posted 1 month ago

A top-tier technical partner that prioritizes security and code integrity above all else.

Our experience with Cowchain was excellent. Dealing with financial assets requires zero-fault tolerance, and their team delivered exactly that. They architected complex staking mechanisms and multi-signature wallet integrations. Their deep understanding of the Ordinals infrastructure and BRC20 standards helped us launch a market-leading product ahead of the competition.

What was the project name that you have worked with Cowchain?

Product Discovery & MVP Development for Web3 SaaS

What service was provided as part of the project?

Software Development, Blockchain Development, Web3

Describe your project in brief

We hired Cowchain to build a premium launchpad for Tier-1 projects. The goal was to create a secure environment for token sales, staking, and cross-chain integrations with high transparency and safety for investors.

What is it about the company that you appreciate the most?

Their transparency and attention to security audits. They don't just write code; they stress-test every scenario. We felt confident throughout the development cycle thanks to their detailed reporting and deep domain expertise.

What was it about the company that you didn't like which they should do better?

They are very selective about the technologies they use to ensure stability. While it limits some "experimental" features, it resulted in a rock-solid platform that handled millions in volume.

Rating Breakdown

  • Quality
  • Schedule & Timing
  • Communication
  • Overall Rating

Project Detail

  • $10001 to $50000
  • Completed
  • Financial & Payments
Anna Korobkyna
Anna Korobkyna, Business Development Manager at Protectimus Limited
Posted 1 month ago

Professional, high-speed execution with a deep understanding of Web3 architecture and product logic.

Working with Cowchain was a seamless experience. They took our core concept and helped translate it into a scalable product. Their team handled everything from smart contract security to a responsive frontend. We were particularly impressed by their ability to handle high-traffic spikes and ensure a smooth wallet-based onboarding for our users.

What was the project name that you have worked with Cowchain?

Web3 Ecosystem Development & Smart Contract

What service was provided as part of the project?

Software Development, Blockchain Development, Web3

Describe your project in brief

We partnered with Cowchain to build a comprehensive Web3 platform that included a tokenized rewards system, high-load backend, and a custom admin panel for managing on-chain data and user tiers.

What is it about the company that you appreciate the most?

Their "product-owner" mindset. They don't just follow tickets; they care about business value and scalability. Communication via Slack and weekly syncs was proactive and transparent.

What was it about the company that you didn't like which they should do better?

Nothing major to report. The project went very smoothly. Adding more automated QA reports during the mid-sprints could be a small future upgrade, but the final delivery was flawless.

Rating Breakdown

  • Quality
  • Schedule & Timing
  • Communication
  • Overall Rating

Project Detail

  • $10001 to $50000
  • Completed
  • Information Technology