Crypto · DeFi · Fintech
Projects of any complexity: smart contracts, DeFi protocols, exchanges, trading systems, blockchain infrastructure. Every skill sits inside the team — from architecture to on-call after launch.
In business since 2018. The team grew out of fintech: payment systems, processing, exchange engines. We brought that baggage into crypto, so we read a blockchain project as a financial system — money, risk, reconciliation, reporting.
Protocols, staking, tokenization, vesting, multisigs in Solidity and FunC/Tolk. Covered with tests and fuzzing, prepared for external audit, findings closed.
Nodes, indexers, on-chain monitoring, custody and signing schemes, cross-chain bridges. We carry the load and keep chain state and database from drifting apart.
Matching engine, order book, clearing, deposits and withdrawals, risk limits. We know where a trading system gets tight and how to measure each spot.
Payment gateways, card issuing, processing, KYC/AML, reconciliation and reporting. We have shipped integrations with banks, issuers and data providers.
We take an idea down to a technical spec: model, chain selection, contracts, integrations, risks, effort estimate. You get a document to bring to an investor or to your own developers.
We take the whole project: contracts, backend, frontend, infrastructure, launch. Two-week sprints with a demo at the end of each.
We write the contracts, model the economics, cover them with tests and fuzzing. We walk through the external audit and fix findings before release.
Matching, order execution, market making, low-latency bots, slippage monitoring. Latency is measured per hop and kept inside a budget.
Nodes and indexers, Kubernetes, deploys, metrics, alerts, on-call. Set up so your engineer can handle a 3am incident without calling us.
Engineers plugged into your process: from a single contract developer to a team with a lead and QA. Repository, code and rights stay with you.
Client and product names stay closed — everything here is under NDA. We describe the problems, the architecture and the technology.
A card tied to a crypto balance: debit at authorization time, conversion at the current rate, limits and holds. We built the processing, the issuer integration and the KYC/AML flow, and settled daily with the provider.
A protocol with liquidity pools and rewards: on-chain logic, economic model, liquidity migration from the previous version. Contracts went through an external audit and every finding was closed.
Issuing and tracking tokenized assets on smart contracts: holder whitelists, transfer restrictions, payouts, issuer reporting. Plus an investor account area and an admin panel with role separation.
A centralized exchange from scratch: matching engine, order book, wallets, deposits and withdrawals, risk limits, admin panel. Hot and cold circuits were split, with balance reconciliation and alerts on mismatches.
Low-latency trading in DeFi: a custom execution path, sandwich and MEV protection, a strategy simulator on historical blocks, slippage monitoring. The latency budget is written out millisecond by millisecond.
Liquid staking on TON: pool contracts, a jetton as the proof of share, reward distribution across validator rounds, entry and exit without waiting for a round. A dashboard and node monitoring on top.
Half an hour to talk: what the project is, where it stands, what the deadlines are. Then a short scope estimate and a budget range.
We sign the NDA before you show the details. Then we work through requirements and draw the architecture: chains, contracts, integrations, milestones.
Two-week iterations, a demo at the end of each, repository and tracker access from day one. Priorities shift — we reorder the backlog.
We prepare the code for external audit, ship it, set up monitoring and on-call. After that we hand over to your team or stay on support.
It depends on scope: auditing one contract and building an exchange with a matching engine differ by two orders of magnitude. After a half-hour call we give a budget range and a timeline, then tighten both during discovery. The estimate is free and commits you to nothing.
A standard contract — staking, vesting, a token with transfer restrictions — takes two to four weeks including tests and audit preparation. A protocol with its own economics is scoped separately; there most of the time goes into modelling rather than code.
We prepare code for external audit: tests and fuzzing, economic modelling, a pass over the known vulnerability classes. Order the audit itself from an independent team — reviewing your own code is the wrong setup. We walk through the review and close every finding.
Yes, we have done it: matching engine, order book, wallets, deposits and withdrawals, risk limits, admin panel, split hot and cold circuits. Licensing and legal stay on your side; the technical part we take in full.
EVM chains (Ethereum and L2s), TON, Solana, Bitcoin, Tron. Contracts in Solidity, FunC and Tolk, Rust. If you need a chain we have not shipped on, we will say how long ramping up takes rather than pretend it is already in our stack.
The code, the repository and the rights are yours from the first commit. We sign the NDA before you show project details — which is why no client is named anywhere in our work section.
Yes. We provide engineers who plug into your process: from a single contract developer to a team with a lead and QA. They work in your tracker and follow your code review rules.
Describe the task in a couple of paragraphs — we answer within one business day. If you would rather talk, message us on Telegram and we will set up a call.