Web3 and smart contracts
In Web3 a mistake costs more than anywhere else: a contract cannot be patched away and a transaction cannot be recalled. We take the engineering end to end — from wallet connectivity and payment acceptance to contracts and their audit. Custody of client funds and licensed operations stay on your side.
What's included
- Wallet connectivity: WalletConnect, MetaMask and Ledger, Trezor and Keystone hardware wallets
- Crypto and stablecoin acceptance with on-chain reconciliation and webhooks
- Solidity smart contracts: development, tests, deployment and upgrades
- Contract audit: reentrancy, access control, protocol economics, prioritised report
Technologies
How we work
- 01
Brief and estimate
We look at the task, your current system and constraints, then name the timeline and budget and suggest how to work together.
- 02
Specification
We capture requirements and acceptance criteria in a specification — it is what we build against and how the result is accepted.
- 03
Iterative development
You see the result after every iteration; we test and fix before anything goes into a release.
- 04
Launch and support
We ship with no downtime, monitor the product after launch and stay on for support if you need it.
Cost and timeline
Hourly Rates: from 1 800 ₽ to 3 500 ₽ / hour — depending on specialist qualification.
We give an exact timeline and budget after a brief: we break down the task, fix the scope and suggest a format — a fixed plan or hourly work.
See plansFAQ
Which blockchains do you work with?
Our core stack is EVM-compatible networks: Solidity, Foundry, Hardhat, ethers.js and The Graph for data indexing. The choice of network depends on fees, speed and where your users are, and we discuss it during the brief. Other networks are considered case by case.
Can you audit a contract written by another team?
Yes. We combine static analysis, including Slither, with manual review: reentrancy, access control, upgrade logic and protocol economics. You get a prioritised report, and after fixes we run a re-check. An audit reduces risk but cannot guarantee the absence of vulnerabilities, so tests and monitoring remain important after deployment.
How much does smart contract development cost and how long does it take?
It depends on the complexity of the logic, the number of networks and integrations, and whether an audit is needed. We estimate after a short brief. A deployed contract cannot be patched, so the plan always includes testing on a testnet. You can work with us hourly or on a fixed monthly plan.
Web3 and smart contracts
Wallet connectivity, crypto payments, smart contracts and security audits.