Smart Contract Development Company | Wavect
HomeServicesWeb3 & BlockchainSmart Contract DevelopmentSmart ContractsContracts that hold real money. Architecture, implementation, third-party audit, mainnet, and the maintenance nobody quotes for. Cancel. . .
HomeServicesWeb3 & BlockchainSmart Contract DevelopmentSmart ContractsContracts that hold real money. Architecture, implementation, third-party audit, mainnet, and the maintenance nobody quotes for. Cancel any week. Last week refunded if we didn't blow you away. No hours tracked. $2M+Raised through LivLive, the RWA product whose contracts we builtSee the case studyAuditedResonance Security audit published against the LivLive contractsSee the case study$1M+Secured by the LightBridge contracts on mainnetSee the case study// 01What We DoContract work is mostly decisions, not Solidity. We make those decisions explicit before anything ships to an address that cannot be changed. Contract ArchitectureThe decisions that get expensive to reverse once you have deployed. Storage layout and access controlWhat belongs on-chain and what does notUpgrade path chosen before launch, not afterFailure modes and pause conditionsSolidity and Rust ImplementationEVM L1 and L2 in Solidity, Solana and NEAR in Rust. ERC-20, ERC-721, ERC-1155 and custom standardsProtocol logic with real accountingGas-aware implementation, measured rather than guessedBackend and indexer integrationTesting and InvariantsFoundry and Hardhat suites that model an adversary, not a happy path. Invariant and fuzz testingFork tests against live mainnet stateAdversarial cases: MEV, reentrancy, oracle failureCoverage gates enforced in CIUpgradeability DecisionsProxy, immutable, or migration. Each one costs you something different. Transparent and UUPS proxy trade-offsImmutable contracts with a planned migration pathStorage-collision safety across upgradesTimelock and governance over upgrade keysThird-Party Audit CoordinationWe do not audit our own code. We prepare it, brief the auditor, and fix what comes back. Audit-ready specs and documentationAuditor selection and scopingRemediation and re-reviewPublished report, as on LivLiveDeployment and MonitoringMainnet is where the work starts, not where it stops. Deterministic, reproducible deploysSigning keys in AWS KMS, never on a laptopEvent monitoring and alertingOngoing maintenance under retainer// 02How we approach contract workWe start from audited, battle-tested patterns and write custom code only where the use case genuinely is custom. Before we quote, we will tell you which parts of your idea do not need a contract at all. Gas is measured against our own engagement history rather than estimated: seewhere gas costs actually went across our Web3 mandates. For the wider picture, start atWeb3 and blockchain development. // 03When a smart contract is the wrong answerA contract earns its cost when value moves between parties who do not trust each other, or when the record has to be publicly verifiable. It does not earn its cost when a database already solves the problem, when the only argument for it is that investors want a token, or when the logic will need to change every quarter. Immutability is a feature until it is your product roadmap. We turn down contract work that fails that test, because the cheapest contract is the one you did not need. Have a contract to build, or one you inherited?Send us the spec, or the repo. You get an architecture read and a real number, not a discovery call. // proofProof, not promisesThese are selected projects, not our full portfolio. We have shipped 75+ products since 2018. What clients sayGoogleTHE agency to go for blockchain development. Super experienced and highly professional team. Love to work with them. Richard LeitgebOriginalLinkedInFor technical questions on blockchain and NFT, I always come back to Kevin. He has familiarized himself very well in this area, and the expertise he brings is certainly essential for projects like these. I can only recommend everyone get in touch with Kevin on these topics. Fritz FahringerKlarheit vor KITrustpilotExperts in smart contract development. CJOriginalIndependently rated 4. 5/5 on TrustpilotRead the reviewsFAQsHonest answers about smart-contract deliveryEnd any week, with one message. No notice period, no exit interview, no fine print. We invoice weekly, so the most you’re ever committed to is the current week. It’s in your contract: tell us, and we refund that week. No questions, no invoices to dispute, no calls to escalate. The only rule: refunds apply to the most recent week. Because hours are the wrong metric. If we’re optimizing for hours billed, we’re not optimizing for your outcome. The deal is simpler: every week, we earn the next one. If we don’t, you don’t pay. We’re free to spend zero hours or sixty. What matters is whether you’re blown away. We work with operators, not lottery winners. If a request would require breaking physics, the law, or a third party’s systems, we say so, and if we can’t align, we walk. The guarantee is mutual: you can fire us any week; we can also fire ourselves. A focused ERC-20 or NFT deployment with custom logic and a thin dApp lands around €15-35k including mainnet rollout. A protocol with custodial logic, integrations, and a third-party audit runs €60-150k+ depending on audit scope. Production-grade wallets, bridges, or new L1/L2 infrastructure start around €100k and 3-6 months. We put audit, gas-optimization passes, and post-launch monitoring inside the proposal, so the number you sign is the number you pay. Both, and we default to the safer one. We start from OpenZeppelin and other production-proven implementations whenever they fit, and write customsmart contractswhen the use case is genuinely novel. Greenfield is sometimes necessary. Starting from code that has already survived mainnet is almost always cheaper and safer. No, and you should be wary of anyone who offers to. We coordinate an independent third-party audit and fix the findings, but we do not mark our own homework. OnLivLivethe Resonance Security report is published. We budget the audit into the plan from day one rather than treating it as an optional extra at the end. EVM: Ethereum L1, Optimism, Arbitrum, Base, Polygon, and zkSync. Non-EVM: Solana, NEAR, and Internet Computer. We are chain-agnostic on purpose. We will tell you when moving to another chain is right and when it is tribalism that will cost you users. Yes, that is a large share of the work. We inherited a prototype onLightBridgeand progressively replaced the weak architectural decisions while it stayed live. We start with a read of the deployed bytecode, the test suite, and the upgrade keys, then tell you honestly whether hardening or redeploying is cheaper. // More inMore in Web3 & BlockchainWeb3 & BlockchainThe hub: dApps, payments, scaling and the chains we ship on. Routes to the capability you actually need. Read MoreAccount AbstractionERC-4337 smart accounts, paymasters, session keys and recovery. Three production SDKs behind us. Read MoreWeb3 WalletsSmart, embedded and invisible wallets, plus MetaMask Snaps. Non-custodial by default. Read MoreCross-Chain BridgesWe built a six-chain production bridge, which is mostly why we will tell you when not to build one. Read MoreZero-KnowledgePrivacy by cryptographic proof, not policy: ZK identity, private transactions, and ZK rollups. Read More// Get to know usGet to know usLong-term relationships over quick wins.