On-chain, a single overlooked line is irreversible and expensive. We design, build, test, and audit contracts in Solidity and Rust for Ethereum, EVM chains, and Solana — obsessed with security, gas efficiency, and code that behaves exactly as intended.
No line ships unaudited
function withdraw(uint256 amt) external {
require(amt <= balances[msg.sender]);
balances[msg.sender] -= amt; // checks-effects
}
Coverage
100%
Criticals
0
Gas saved
−31%
Critical findings shipped to mainnet
Peak gas reduction delivered
Critical-path test coverage
Typical spec → audited mainnet
Security, gas, and certainty
A great contract is provably safe, cheap to use, and impossible to surprise. We engineer for all three, because on-chain there's no patch on a bad day.
We write every line assuming someone is trying to drain it. Re-entrancy guards, checks-effects-interactions, and access control are baseline, not afterthoughts.
Unit, integration, fork, and fuzz tests drive coverage to 100% of critical paths — the contract behaves exactly as specified, on every edge case.
Storage packing, batching, and assembly where it counts cut transaction costs 25–40% — users stop being punished for using your product.
Multisig ownership, timelocks, and proxy upgrade patterns so you can fix and evolve without handing one person the keys to everything.
What you get
Not a contract you hope is safe — one with the tests, the audit report, and the gas benchmarks to prove it.
From spec to mainnet
We turn your rules into an unambiguous spec and map every way value could be stolen, locked, or manipulated before writing a line.
Contracts written for safety first, then tuned for gas — packed storage, batching, and assembly only where it's proven safe.
Slither, Mythril, and Foundry fuzzing on every commit, with 100% coverage on critical paths, before anything leaves our hands.
Third-party audit, remediation, testnet dry run, then a multisig-controlled mainnet deployment with verified source.
A contract, in production
A Web3 startup inherited a staking contract that failed audit and cost a fortune in gas. We rewrote it from the spec up — secure, lean, and audited clean.
Stakeworks
Staking protocol · USA
Critical findings (was 9)
Gas per stake/claim
Spec to audited mainnet
Critical-path coverage
“The contract we inherited failed audit and bled gas. They rebuilt it from the spec, drove it through a clean third-party audit with zero criticals, and cut staking gas by seventy percent. Our users actually feel the difference on every transaction.”
Straight answers
Smart contract development is the engineering of self-executing programs that run on a blockchain — code that holds funds, enforces rules, and settles transactions with no intermediary. Because deployed contracts are immutable and handle real value, the discipline centers on security, exhaustive testing, gas efficiency, and independent auditing far more than typical app code.
We primarily use Solidity for EVM-compatible chains (Ethereum, Arbitrum, Optimism, Base, Polygon, Avalanche) and Rust for Solana and Near. We choose the language and chain based on your throughput, cost, and ecosystem requirements rather than a house default.
Yes. We run rigorous internal review and static analysis (Slither, Mythril, Foundry fuzzing), then engage an established external audit firm for certified sign-off before mainnet. You receive the full audit report and a tracked remediation log.
By default contracts are immutable. When upgradeability is required we implement proxy patterns (OpenZeppelin UUPS or Transparent), governed by a multisig or DAO with timelocks — so you can patch safely without creating a single point of catastrophic control.
We optimize storage layout, pack variables, batch operations, minimize external calls, and drop to inline assembly only where it's safe and proven. On real engagements this typically cuts per-transaction gas 25–40%, so your users aren't taxed for interacting with the contract.
Send us your contract spec or your existing code. We'll come back with a security read, a gas estimate, and a fixed quote.
2000+ vetted engineers · 3 global hubs · 98% client retention
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