Service / Web3
Smart contracts written like they hold money.
Solidity and Vyper contracts for EVM chains, from tokens and vaults to marketplaces and governance, with invariant tests, least-privilege roles and upgrade policies decided up front.
[ 01 ]The short answer
What is Smart Contract Development?
Smart contract development is designing, writing, testing and deploying the onchain programs that hold and move assets. On Ethereum and EVM chains such as Base, Arbitrum, Optimism, Polygon and BNB Chain we write Solidity or Vyper with Foundry, and treat every admin power as a risk to justify: who can mint, pause, upgrade or change fees, behind which timelock and multisig. Each contract ships with unit, fuzz and invariant tests and a plain-English description of what it can do to users' funds.
What you get
- Audited-ready contracts with NatSpec
- Foundry test suite with fuzz and invariant tests
- Deployment scripts and verified source
- Admin-powers disclosure in plain English
- Monitoring and incident runbook
[ 02 ]What we build
The pieces, built to last.
- 01
Tokens
ERC-20, ERC-721 and ERC-1155 contracts with vesting, allowlists and supply rules fixed in code.
- 02
Vaults and treasuries
ERC-4626 vaults and treasury contracts with withdrawal limits and role separation.
- 03
Marketplaces and escrow
Listings, auctions, royalties and escrow that settle without a trusted middleman.
- 04
Governance
Governor and timelock setups where every admin action is visible and delayed.
- 05
Upgrade strategy
Immutable where possible, UUPS or transparent proxies where needed, with upgrade rights decided in writing.
- 06
Testing to invariants
Foundry fuzzing and invariant suites that state what must always be true, and prove it under random input.
[ 03 ]Where it pays off
Where it earns its keep.
- 01
Token launches
Supply, vesting and distribution contracts that investors and exchanges can verify.
- 02
Membership and access
NFT-gated access, subscriptions and loyalty with onchain proof.
- 03
B2B settlement
Escrow and milestone payments between companies, settled in stablecoins.
- 04
DAO tooling
Treasury, voting and payouts with checks against hostile proposals.
[ 04 ]How we deliver
Four steps, one team, start to finish.
The same people scope it, build it and stay after launch. Timings are typical for a first release; we agree yours after the deep dive.
- 01Week 1
Threat model and spec
Who can move money, under what conditions, and what happens when a key, an oracle or a bridge fails. Written down before code.
- 02Weeks 2 to 8
Build with invariants
Contracts or programs with unit, fuzz and invariant tests, least-privilege roles, timelocks and rate limits from the first commit.
- 03Weeks 6 to 10
Review and testnet
Internal review, an independent audit where value is at stake, and a public testnet with monitoring wired in.
- 04Ongoing
Mainnet and watch
A staged launch with caps, live alerting on admin actions and outflows, and a rehearsed incident plan.
[ 05 ]Stack
Tools we reach for.
Chosen per project, and we work in yours. Nothing here is a lock-in: you own the code and the accounts.
- Solidity
- Vyper
- Foundry
- Hardhat
- OpenZeppelin
- Slither
- Echidna
- Safe
- Tenderly
- Ethereum
- Base
- Arbitrum
- Optimism
- Polygon
[ 06 ]Related work
Built by the same team.
[ 07 ]Further reading
Problems we found, and how we would solve them.
- DeFi security3 min read
In 2026, DeFi lost more to keys than to code
ProblemMost stolen value now flows through compromised private keys, thin multisigs, single-verifier bridges and governance powers with no delay, which a code audit does not cover.ProposalAssume a key will be stolen: split and timelock admin powers, rate-limit outflows, delay collateral listings, require several independent verifiers, and wire monitoring that can pause before the treasury empties.Read the proposal - Due diligence3 min read
What can this contract do to your money?
ProblemAnswering whether an owner can mint, freeze, change fees or upgrade means reading dozens of files behind a proxy; scanners give unexplained yes or no flags and chatbots lose the context.ProposalIndex the verified source with Solidity-aware chunking, follow proxies to the real implementation, combine deterministic detectors with hybrid retrieval, and answer only with line-level citations.Read the proposal
[ 08 ]FAQ
Questions buyers ask.
It depends on the value at risk and the complexity more than on line count. We scope after the deep dive and always budget for an independent audit when real money is involved.
Only if you can say who holds upgrade rights, behind what delay, and why users should accept that. Upgradeability is a trust assumption, so we write it down and disclose it.
Where your users and liquidity are. For most new consumer products that means an Ethereum L2 such as Base or Arbitrum; for high-frequency trading, often Solana.
[ 09 ]More Web3 services
- Solana Program DevelopmentSub-second apps on the fastest major chain.
- dApp DevelopmentOnchain apps people actually enjoy using.
- DeFi Protocol DevelopmentFinancial protocols that survive real markets.
- Smart Contract Security AuditFind the flaw before an attacker does.
- Real-World Asset TokenizationAssets that settle in minutes, not days.
- Stablecoin and Crypto PaymentsGlobal payments that settle in seconds.
- Wallets and Account AbstractionSelf-custody without the seed-phrase pain.
- Layer 2, Rollup and Appchain DevelopmentYour own chain, when you really need one.
- Cross-Chain and InteroperabilityOne product across every chain your users use.
- Zero-Knowledge Proof DevelopmentProve it without revealing it.
- Onchain AI Agents and Agent PaymentsAgents that can earn, pay and be trusted.
One company at a time