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Business Overview

Business Overview

Our client, a fintech company, envisioned a decentralized exchange (DEX) platform for seamless crypto trading to diversify its holdings. This peer-to-peer marketplace would empower traders to engage in direct transactions, retaining full control of their funds without relying on intermediaries or custodians, while also facilitating cross-chain trading.

In a departure from traditional centralized exchanges, the client’s DEX platform distinguishes itself by maintaining the independence of trader assets from the platform’s value and strictly adhering to a zero-user-data policy.

The client sought NIX’s expertise to test the idea for feasibility and develop a scalable DEX platform from scratch that will provide a fast, secure and convenient tool for managing blockchain assets.



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In translating our concept into reality, we committed to the following deliverables:

  • Architecting a robust and scalable platform capable of handling a minimum required of 100,000 active users and processing hundreds of events per second
  • Ensuring seamless accessibility to comprehensive historical trading data for all users
  • Implementing real-time data updates to provide users with up-to-the-minute market information and enable timely trading decisions


After validating the concept and assessing scalability with a PoC, the NIX team proceeded to create a full-scale DEX platform with enriched functionality.

The front-end of the platform seamlessly interacts with smart contracts via user wallets and a WebSocket connection for secure order execution and dynamic data updates.

To develop smart contracts for the DEX platform, we harnessed Solidity, the EVM’s de facto standard, empowering it to handle intricate transaction logic. We also incorporated the ability to participate in liquidity pools as an investor apart from only swapping assets in peer-to-peer transactions and automated market makers (AMMs).

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Smart Contracts

Several types of smart contracts are deployed to every supported blockchain:

  • Order Book provides users with an unparalleled level of transparency and the ability to place different types of orders (Limit Order, Market Order, Take-profit, Stop-limit), enhancing the overall trading experience.

  • Liquidity Pool leverages the AMM mechanism to facilitate seamless and efficient trading by enabling users to provide liquidity, earn fees, and maintain market depth.

  • Liquidity Token represents the share rights of Liquidity Pools participants—all records about current participants are stored in the blockchain, so nobody can manipulate this data.

  • ERC-20 token standard enables cross-chain bridging and swapping.

GO-powered Backend for Scalability

The backend of the platform is built on top of Go, given its excellent performance in dealing with high loads. To ensure that the platform will keep up with the future rapidly growing number of simultaneous users, the NIX team implemented the scalable architecture where independent additional instances of the Backend API service can be created on demand.

  • Blockchain Data Management
  • Integrations and Third Party Solutions


With the launching of a new DEX platform, our client gained a new thriving business division and additionally introduced a whole new customer base to their main online banking product. The platform’s robust architecture and comprehensive features that prioritize security enabled the company to expand into new markets and increase its global reach, fueling market share growth.

Key success points of the solution:

  • Decentralization: It operates on a peer-to-peer network without relying on a central authority to execute trades or manage funds.
  • Cross-Chain Compatibility: Support of cross-chain token swaps, enabling users to trade assets across different blockchains.
  • Low Fees: Low transaction fees to make it accessible to users of all sizes
  • User-friendly Interface: Simple, intuitive, and user-friendly interface that is easy to navigate, even for first-time users.
  • High Liquidity: The solution has high liquidity, allowing users to swap tokens quickly and efficiently.
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10 Experts (Project Manager, Business Analyst, Solution Architect, Tech Lead, QA Engineer, 3 Web3 Engineers, UI/UX Designer, Markup Engineer)


Tech Stack:

MetaMask, Interchain Token Service, go-ethereum, BNB Smart Chain, Arbitrum, Avalanche, GraphQL, Next.js, Solidity, PostgreSQL, Ganache, Truffle, RabbitMQ, Golang, WebSockets, TypeScript, Nginx

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