Available for Consulting & Projects

Isuru Udayanga

Senior Software Engineer & Director — Co-Founder at Perfectus Pvt Ltd

I build the decentralized future — smart contracts, DeFi protocols, DEX platforms, and full-stack Web3 applications deployed across EVM-compatible chains.

View Projects Get In Touch
5+
Years Experience
10+
DeFi Protocols
4+
EVM Chains
∞
Passion for Web3
About Me

Engineer. Builder. Innovator.

I'm Isuru Udayanga, a Senior Software Engineer, Director, and Co-Founder of Perfectus Pvt Ltd, based in Maharagama, Sri Lanka. With deep roots in blockchain engineering, I specialize in designing and deploying production-grade Web3 infrastructure.

My core focus spans smart contract development, DeFi protocol engineering, and full-stack decentralized applications. I've built Uniswap V3 clone DEX platforms, LP position tracking systems, staking/referral reward engines, and on-chain governance solutions deployed across BSC, Ethereum, Arbitrum, and Base.

I approach every project with a strong product mindset — crafting systems that are secure, scalable, and optimized for real-world usage.

⛓️
Multi-Chain Expert
BSC, Ethereum, Arbitrum & Base deployments with EVM compatibility
🏦
DeFi Protocol Dev
AMMs, liquidity pools, staking systems & yield farming protocols
🔐
Smart Contract Auditor
Security-focused Solidity development with multi-sig governance
🚀
Co-Founder
Building & leading tech ventures at Perfectus Pvt Ltd, Sri Lanka
Technical Skills

My Tech Stack

🔗
Blockchain & Smart Contracts
Solidity Hardhat Foundry OpenZeppelin ERC-20 / ERC-721 Uniswap V3 AMM Design Multi-sig Wallets
🌐
Web3 & DeFi
Ethers.js Web3.js The Graph Subgraph Dev LP Tracking Token Economics Price Oracle APR/APY Calc
⚙️
Backend & Infrastructure
Node.js TypeScript NestJS Express.js MongoDB Redis GraphQL Docker AWS
📡
EVM Chains Deployed
Ethereum BNB Smart Chain Arbitrum Base Polygon EVM-compatible
Experience

My Journey

Director & Co-Founder
2021 – Present
Perfectus Pvt Ltd · Maharagama, Sri Lanka
Leading the technical vision and strategy for a software company specializing in blockchain and Web3 solutions. Oversee product development, smart contract architecture, team management, and client delivery across multiple DeFi and Web3 projects.
Senior Blockchain Engineer
2020 – Present
Full-Stack DeFi Development
Architected and deployed Uniswap V3 clone DEX platforms on BSC, Ethereum, and Base. Built LP position tracking systems with real-time analytics, subgraph indexing via The Graph, referral & staking reward engines, and multi-signature wallet governance.
Full-Stack Web3 Developer
2018 – 2020
Blockchain Protocol Development
Developed token economics systems with complex distribution logic, price calculation engines, and APR/ROI computation modules. Integrated AWS App Runner for scalable production deployments and implemented CI/CD pipelines with Docker.
Projects

Featured Work

🦄
BSC BASE ETH
Uniswap V3 Clone DEX
Production-grade decentralized exchange with concentrated liquidity AMM, custom fee tiers, position NFTs, and full swap routing. Deployed across multiple EVM chains with a custom subgraph for real-time analytics.
Solidity Uniswap V3 The Graph Node.js
📊
ARB BSC
LP Position Tracker
Real-time liquidity position monitoring dashboard with APR/ROI analytics, fee accrual calculations, impermanent loss tracking, and price range alerts across multiple DeFi protocols.
LP Math GraphQL Redis MongoDB
🎁
BSC
Staking & Referral Engine
Complex on-chain staking protocol with tiered referral reward distribution, vesting schedules, and penalty mechanisms. Handles multi-level commission logic with gas-optimized Solidity contracts.
Solidity Staking Ethers.js NestJS
🔐
ETH BASE
Multi-Sig Governance Wallet
Enterprise-grade multi-signature wallet solution with on-chain proposal voting, timelock mechanisms, role-based access control, and an integrated admin dashboard for protocol governance.
Solidity OpenZeppelin Docker AWS
📈
ETH BSC ARB
Subgraph Indexing System
High-performance blockchain data aggregation using The Graph Protocol. Custom subgraphs for DEX swaps, liquidity events, and user positions with GraphQL APIs consumed by frontend dashboards.
The Graph GraphQL TypeScript Node.js
🏭
BSC BASE
Token Economics Platform
End-to-end token issuance and economics platform featuring deflationary mechanics, liquidity bootstrapping, vesting contracts, and a real-time price calculation engine with on-chain oracle integration.
ERC-20 Tokenomics Price Oracle Express.js
Contact

Let's Build Together

Whether you're launching a DeFi protocol, need a smart contract audit, or want to build the next generation DEX — I'm open to consulting, collaborations, and exciting blockchain projects.

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