Secure Web3Built to Last
Production-grade smart contracts, DeFi protocols, NFT platforms, and DAOs. Formal verification, security-first architecture, and battle-tested deployment. 15+ chains supported.
End-to-End Web3 Development
From protocol design to mainnet deployment — every stage handled by blockchain specialists
Smart Contract Development
Secure, gas-optimized contracts using Solidity and Rust. Hardhat and Foundry frameworks, OpenZeppelin standards, and formal verification.
Security Audits
Comprehensive smart contract audits with formal verification, fuzzing, static analysis, and multi-layer vulnerability detection.
DeFi Protocols
AMMs, lending platforms, staking systems, yield aggregators. Chainlink oracles, flash loans, liquidity incentives, and economic modeling.
NFT Platforms
ERC-721/1155 standards, minting engines, royalty management, IPFS metadata pinning, gas-optimized trading, and collection analytics.
DAO Infrastructure
Governance tokens, on-chain voting mechanisms, treasury management, multi-sig wallets, proposal systems, and protocol upgrades.
dApp Development
Full-stack development with wagmi, RainbowKit, ethers.js, and viem. TheGraph indexing, wallet integration, and blockchain state management.
Deploy Anywhere
We deploy and maintain contracts across 15+ networks — one codebase, multi-chain reach
5-Phase Web3 Delivery
Security-first methodology from protocol design to mainnet — no shortcuts taken
Protocol Design
Token economics, protocol architecture, governance design, attack surface analysis, and threat modeling before any code.
1–2 weeksContract Development
Smart contract implementation with NatSpec documentation, unit tests, and integration tests for every function.
2–6 weeksSecurity Audit
Internal multi-layer review followed by third-party formal audit. All findings addressed before testnet deployment.
2–3 weeksdApp & Frontend
React dApp with wallet integration, real-time chain state, transaction feedback, and mobile-responsive design.
2–4 weeksTestnet & Mainnet
Staged testnet deployment, community beta testing, final audit sign-off, and phased mainnet deployment.
1–2 weeksWeb3 Technologies
Web3 Applications We Build
DeFi Lending & Borrowing
Overcollateralized lending protocols with liquidation mechanisms, interest rate models, and risk parameter governance.
DeFi, FinTech
NFT Marketplaces
Custom NFT marketplaces with lazy minting, royalty enforcement, collection analytics, and social discovery features.
NFT, Art, Gaming
DAO Platforms
On-chain governance platforms with proposal creation, delegation, quadratic voting, and treasury management.
DAOs, Protocols
Token Launch Platforms
IDO / LBP / fair launch mechanisms with vesting schedules, KYC hooks, and liquidity bootstrapping automation.
Web3 Startups, DeFi
On-Chain Games
Fully on-chain game logic, NFT-based assets, play-to-earn mechanics, and cross-chain asset portability.
Gaming, Metaverse
RWA Tokenization
Real-world asset tokenization including real estate, commodities, and private credit with regulatory compliance.
Real Estate, Finance
Featured Success Story
DeFi Protocol (Series A)
Multi-Chain Yield Aggregator Protocol
Challenge
Fragmented yield opportunities across 6 chains with no unified interface. Manual yield chasing costing users gas and opportunity cost. No existing aggregator supported their target chains.
Solution
Built a cross-chain yield aggregator with auto-compounding vaults, Chainlink-powered oracle feeds, Gnosis Safe multi-sig treasury, and a React dApp with multi-wallet support. Full formal verification before mainnet.
Fixl vs. Typical Web3 Firms
What Our Clients Say
“Fixl's smart contract engineers found 3 critical vulnerabilities in our own audit that we had missed. Their formal verification process is the best I've seen in the industry.”
“We launched our NFT marketplace in 10 weeks with 99.9% contract reliability. The gas optimization alone saved our users $2M in the first month. Absolute experts.”
“Our DAO treasury now manages $10M on-chain with the governance framework Fixl built. The timelock and multi-sig architecture gives our community full confidence.”
How We Engage
Smart Contract Audit
Comprehensive security audit of your existing smart contracts.
Full Protocol Build
End-to-end protocol development from design to mainnet.
Web3 Team Extension
Dedicated blockchain engineers embedded in your team.
Web3 Questions Answered
Launch with Confidence
Production-ready smart contracts, secure architecture, and multi-chain deployment. From concept to mainnet — with formal verification and zero tolerance for vulnerabilities.