Smart contract development, built to last
Gas-optimised Solidity, multi-chain dApps, NFT marketplaces and DeFi protocols. The marketplace we shipped reached $2.4M in first-month trading volume.
Web3 development services
Full-stack Web3 engineering from smart contracts to frontend dApps.
Smart contract development
ERC-20, ERC-721, ERC-1155 tokens and custom contract logic in Solidity. Gas-optimised, upgradeable via proxy patterns, and written for auditability.
NFT marketplace development
Primary mint sites, secondary marketplaces, royalty enforcement, lazy minting, and whitelist mechanics. Custom storefronts or OpenSea-compatible.
DeFi protocol development
Liquidity pools, staking contracts, yield farming, and token vesting schedules. Designed with security and economic attack vectors in mind.
dApp frontend development
Web3-native React frontends with wallet connection, contract interaction, real-time transaction status, and multi-chain switching.
Cross-chain bridge development
Token bridging between EVM chains, LayerZero and Wormhole integrations, and multi-chain deployment strategies.
Web3 game integration
On-chain game mechanics, NFT items and characters, play-to-earn token economies, and wallet-gated game access.
Web3 tech stack we work with
The stack we build contracts and dApps on, chosen for what the on-chain surface has to survive.
Smart Contract Dev
Chains
Frontend Web3
Storage
Indexing & APIs
Testing
How we deliver a Web3 project
Security-first process for Web3 projects.
Tokenomics Review
We review your token model, economic design, and attack surface before writing a single line of contract code.
Contract Architecture
Proxy strategy, upgradeability, access control, and storage layout — designed for security and gas efficiency.
Development
Contracts developed with comprehensive NatSpec documentation and test coverage from the start.
Internal Security Review
Reentrancy, integer overflow, access control, and oracle manipulation checks before testnet deployment.
Testnet & Staging
Full integration testing on public testnets with frontend connected. Real-world conditions before mainnet.
Mainnet Launch
Staged deployment with multisig controls, monitoring, and an incident response plan in place from day one.
How much does Web3 development cost?
The published answer, before you ask for one.
Scoped per project rather than banded, because contract complexity and audit scope drive it more than feature count does. What we do publish is the timeline: a standard NFT marketplace with minting, listing and secondary sales takes 10–16 weeks; multi-chain support, royalty enforcement and advanced search take 16–24 weeks.
External audits are quoted separately and passed through at cost — we arrange them with specialist firms such as Trail of Bits, OpenZeppelin or Certik, and we recommend one for any contract holding meaningful value. Keeping the on-chain surface deliberately small is the cheapest way to control both the price and the risk, because that surface is the irreversible part.
We needed a Web3 marketplace in 3 months. Yarvixo hit every milestone, the smart contracts passed audit first time, and the team was proactive the whole way through.
Common questions
What clients typically ask before starting a Web3 project.
Relevant case study
Two Web3 deliveries. The first is a named, installable game, which is a rarer thing to be able to show than a marketplace.
Metarun — on-chain ownership in a live game
Hero and skin ownership, access-ticket mints and the marketplace on BNB Chain, with the race itself kept off-chain — the boundary that decides whether a Web3 game is playable.
Read case study →Decentralized NFT Marketplace
How Yarvixo shipped a Polygon marketplace with gas-optimized contracts, real-time indexing, and $2.4M in first-month trading volume.
Read case study →Ready to build your Web3 product?
Book a free discovery call. We will review your contract requirements and tokenomics before writing a line of code.
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Further reading
Longer answers on scope, on-chain boundaries, and cost.