RedDuck has been an EVM engineering team since 2020: 10 Solidity engineers, 100+ deliveries shipped to mainnet, 0 post-release critical vulnerabilities, and 20+ external audits passed with Hacken and Sherlock. Hiring Solidity developers here does not mean renting seats — you get a team that owns contract architecture, testing, audit preparation, and mainnet deployment as one accountable engagement. The portfolio below is named and checkable: tokenized treasuries for a live RWA issuer, an omnichain ERC-7540 vault, a perp DEX on Arbitrum, and a proposed Ethereum standard.
A stable Solidity team — contract engineers plus the testing and DevOps support they need — working as your protocol bench over months. The composition flexes with the roadmap: heavier on contract work before an audit, heavier on integration after it.
Best for: Protocols with a living roadmap: new mechanisms, upgrades, and audit cycles that never really end.
A scoped engagement with a defined deliverable: a contract system designed, built, tested to our audit-ready baseline, taken through an external audit, and deployed. One team owns it from architecture review to handover.
Best for: A defined build — a token system, a vault, a protocol module — where you want a hard scope and a clean handover.
Stack counts overlap — the same engineers ship on more than one stack. These are company-wide facts, not the size of a single project team: your team is assembled from this bench to match the scope.
EVM work is the core of the practice: DeFi mechanics, RWA tokenization with compliance enforced at the contract level, token standards from ERC-20 to ERC-4626, ERC-3643, and ERC-1400, upgradeable architectures with strict access control, and the off-chain services that keep protocols running. Every project below shipped with the same baseline — 100% branch coverage before an auditor sees the code, coordinated with Hacken and Sherlock.
Core contracts behind a live tokenized-treasury issuer: deposit and redemption vaults priced off a NAV data feed, with greenlist, blacklist, and a sanctions oracle gating every transfer.
Solidity · Hardhat · OpenZeppelin upgradeable · Chainlink-compatible feeds
An ERC-4626/ERC-7540 vault that accepts deposits from any chain and issues shares where the user wants them — LayerZero OFT wiring, async redemptions, and oracle-driven pricing.
Solidity · LayerZero V2 · ERC-7540 · Pyth
A perp DEX on Arbitrum where the production system is the work: liquidator and keeper services, three subgraphs, a NestJS backend, and an end-to-end suite driving the real UI through MetaMask.
Solidity · Hardhat · The Graph · TradingView · Synpress
A proposed Ethereum standard for balance-delta-constrained signing — a stateless proxy that lets a signer verify exactly which tokens move before signing, with a Trezor firmware demo.
Solidity · Hardhat + Ignition · viem · Safe Apps SDK
Solidity code here is written for the auditor before it is written for the demo: 100% branch coverage as the baseline, invariant and fuzz testing on protocol-critical paths, threat modeling at the design stage, and audit coordination with Hacken and Sherlock as part of delivery — not an upsell. That discipline is why the track record shows 0 post-release criticals across 100+ mainnet deliveries.
It also changes what hiring feels like: you are not buying hours and hoping the output survives review. The deliverable is a contract system an external auditor can walk through without the usual round of architectural rework.
The team works at the standards level, not just with them: compliance-heavy issuance on ERC-3643 and ERC-1400, vault semantics on ERC-4626 and its async extension ERC-7540, and ERC-8009 — a proposed Ethereum standard authored and maintained by RedDuck engineers, down to a hardware-wallet signing demo. When your protocol needs a mechanism the standard does not cover, you want engineers who have been on the authoring side of one.
You talk to engineers, not sales. We challenge the assumptions, map what actually needs to be built, and say no if the product should not be built at all.
You get a named composition matched to the scope — contract engineers, QA, DevOps — with an architecture take attached, so you approve a plan, not a headcount.
Short iterations against a visible backlog: contracts, tests, and infrastructure land together, with audit preparation running as part of development rather than after it.
External audit coordinated on our side, findings closed, then mainnet deployment with full authority handover — repository, keys, and infrastructure end up in your hands.

What da quack?
Tell us what you're building on EVM. We'll come back with a team composition and an architecture take — not a rate card.

Mark VirchenkoChief Executive OfficerLinkedIn