Hire Solidity Developer — Ethereum smart contracts built for audit
Solidity is unforgiving: deployed contracts are immutable, every bug is public, and a single reentrancy flaw can drain a treasury overnight. The difference between a tutorial-level contract and a mainnet-ready one is Hardhat or Foundry test coverage, OpenZeppelin-based access control, gas optimization that respects users, and code written to survive an auditor’s scrutiny.
I'm Omer Muneer Qazi, a Dubai-based Fractional CTO & Solutions Architect with 15+ years of experience and 100+ projects delivered across 6 countries. For multi-chain strategy beyond Ethereum, hire a blockchain developer through me and we will map the right stack first.
Smart contracts that survive auditors
ERC standard implementation
ERC-20, ERC-721, and ERC-1155 contracts built on OpenZeppelin foundations — the audited building blocks — extended with your mechanics instead of reinvented from scratch and risk.
Hardhat / Foundry test suites
Full unit and fork-test coverage with Hardhat or Foundry, including invariant tests that hammer your contracts with randomized inputs, the way attackers will once you are live on mainnet.
Gas optimization
Storage layout, calldata usage, and loop costs tuned so your users stop overpaying for every interaction — measured in real gas reports, not guesses or hopes.
Reentrancy & access control hardening
Checks-effects-interactions patterns, reentrancy guards, and role-based access control reviewed line by line — because these two flaw classes cause the majority of contract losses on mainnet.
Upgradeability strategy
Proxy patterns (UUPS or transparent) implemented only where upgrades genuinely make sense, with admin-key governance documented so upgrade power cannot become a rug vector for holders.
Audit-ready documentation
NatSpec comments, architecture diagrams, and a known-issues log prepared before the external audit — so auditors spend their hours on deep logic, not on deciphering your code.
From spec to audited deployment
A structured engagement with no surprises — you’ll always know what’s happening and what’s next.
Spec & threat model
We write down exactly what the contracts must do, then model how an attacker would abuse each function — before any code exists.
Contract development
Contracts built with OpenZeppelin bases and full test coverage, with gas reports reviewed at every milestone, so costs never surprise you or your users.
Internal review
A line-by-line internal review hunts for reentrancy, access control, and oracle issues while fixes are still cheap and fast to ship.
Audit & deployment
The audit-ready package goes to external auditors; findings are fixed, re-verified, then deployed with monitoring in place for launch day and beyond.
Why hire a Solidity developer through a Fractional CTO
Solidity work fails when developers copy patterns they do not understand — upgradeable proxies wired wrong, access control on mint functions missing, oracles trusted blindly. I review contract architecture myself and make sure test coverage and threat modeling happen before the audit clock starts.
You get contracts your auditors respect and your users can trust, with deployment runbooks your team owns. To review your contract scope, start here and send the spec.
Frequently asked questions
What is the difference between a Solidity developer and a blockchain developer?
A Solidity developer specializes in Ethereum smart contracts — the EVM world of DeFi, NFTs, and DAOs. A blockchain developer covers broader ground: chain selection, node infrastructure, and non-EVM ecosystems like Solana.
Should our contracts be upgradeable?
Only when upgrades solve a real problem, like evolving protocol mechanics. Upgradeability adds trust assumptions — whoever holds the keys can change the rules — so we document the governance explicitly.
How do you handle gas costs for our users?
Storage layout, batched operations, and L2 deployment options are optimized and measured with gas reports at each milestone, so fees stay predictable instead of surprising users at checkout.
Do you write tests for smart contracts?
Always — full unit coverage plus Foundry invariant and fork tests that simulate mainnet conditions. Untested contract code holding real value is not a deliverable I will sign off on.
Can you fix vulnerabilities found in our audit?
Yes. Audit findings are triaged by severity, fixed with regression tests proving the fix, and the updated package is prepared for the auditor’s re-verification round afterward.
Get audit-ready contracts
Share your contract spec or existing codebase — I will assess what it takes to make it mainnet-ready and give you a straight answer on scope.