Do you hold funds or run an exchange for clients?

No. We write the software and hand it over. The client operates the product, holds any licences it needs and is responsible for user funds and compliance. Where wallets are non-custodial, keys stay with the user. We never need custody of your funds to build or test your product.

Can you promise my smart contract has no bugs?

No one honestly can. We write tests, run a review and recommend an independent security review for contracts that hold value. Those steps reduce risk but cannot remove it. Because deployed contracts are often immutable, we plan carefully for upgrades, pauses and limits before launch.

Which blockchains do you work with?

Most projects use EVM chains with Solidity, or Solana and similar chains with Rust. We also integrate with Bitcoin and TON through their libraries and node providers. The right chain depends on your users, fees, tooling and regulation, and we talk through these in the scoping call.

Can you help us launch a token or airdrop?

We can write the token contract, vesting and claim logic and the web interface around them. Tokenomics, legal classification, marketing and any airdrop rules are the client's decisions and responsibility. We cannot promise a token price, trading volume or user numbers.

Can you build KYC and AML features?

We can connect identity verification and monitoring providers, store audit trails and build review queues for your compliance staff. Which checks are required, and what counts as compliant, depends on your licence and country. We implement your documented rules and do not decide them.

Call now +1 (929) 450-3261

+1 (929) 450-3261 Chat on WhatsApp

Empty studio desk by a window with a laptop, notebook, pencil and coffee mug

Crypto and Web3 engineering

Crypto and blockchain development company for wallets, exchanges and contracts

We build non-custodial wallets, exchange backends, smart contracts and the services around them. You make the legal and business decisions; we write the software.

Book a scoping session Chat on Telegram

Wallets, exchanges and smart contracts
Written scope and milestone payments
You own the code

What does a crypto and blockchain development company build?

Most of our crypto work falls into a few groups: non-custodial wallets, exchange and trading backends, smart contracts for tokens and staking, payment and deposit systems, and the dashboards and indexing services that sit around them. We also build the ordinary software every product needs, such as accounts, admin tools and notifications.

We build software. We do not operate exchanges, hold client funds or give legal or financial advice.

How are wallets and exchange engines built?

In a non-custodial wallet, keys are created and used on the user's device, and the app handles signing, recovery flows and network fees. We can add several chains and hardware wallet support when the project calls for it.

For an exchange backend, a typical design is a matching engine written in Go or C++ with an in-memory order book, a double-entry ledger, deposit and withdrawal services, and admin and risk tools. If you have throughput or latency targets, we treat them as design goals, build towards them and test against them. We do not present them as results already achieved.

How are smart contracts written and reviewed?

We write contracts in Solidity for EVM chains and in Rust for chains such as Solana. Work includes unit tests, fuzz tests, a testnet release and an internal review before anything goes live. For contracts that hold value, we recommend an independent third-party security review as well.

Smart contracts are usually immutable once deployed, and a bug can mean a loss of funds. A review reduces risk but cannot remove it, and nobody can promise that a contract is free of bugs. Upgrade patterns exist, but they bring their own trade-offs, which we explain during design.

Regulation differs by country: licensing, KYC and AML rules, sanctions, securities and commodities law, and MiCA in the EU. The client is responsible for the licences and legal compliance of the product. We can integrate identity verification providers, add transaction monitoring hooks and keep audit logs, but that is software support, not legal advice.

Tokenomics, the legal classification of a token and its marketing are also the client's decisions and responsibility. Please speak to a lawyer who knows crypto in your market.

How do cost and timelines work?

Typical ranges are $9,500 to $18,500 for a fixed-scope MVP sprint over about 30 to 45 days, and $25,000 to $65,000+ for a custom product build over about 8 to 16 weeks. Crypto projects with exchanges or several chains tend to sit at the upper end. Ranges are typical, depend on scope and timely feedback, and a written quote follows scoping. See pricing. For bots, see Telegram and bots.

Fixed-scope sprints
Dedicated pods
Four practice areas
Client owns the code

How it works

1

Message us on WhatsApp or Telegram

Describe the product, the users and your timeline.

2

We scope and quote

You get a plan, an architecture outline and a written price range.

3

We build in sprints

You see working software each sprint and launch with a tested release.

Questions about custom software builders in United States

Do you hold funds or run an exchange for clients?: No. We write the software and hand it over. The client operates the product, holds any licences it needs and is responsible for user funds and compliance. Where wallets are non-custodial, keys stay with the user. We never need custody of your funds to build or test your product.
Can you promise my smart contract has no bugs?: No one honestly can. We write tests, run a review and recommend an independent security review for contracts that hold value. Those steps reduce risk but cannot remove it. Because deployed contracts are often immutable, we plan carefully for upgrades, pauses and limits before launch.
Which blockchains do you work with?: Most projects use EVM chains with Solidity, or Solana and similar chains with Rust. We also integrate with Bitcoin and TON through their libraries and node providers. The right chain depends on your users, fees, tooling and regulation, and we talk through these in the scoping call.
Can you help us launch a token or airdrop?: We can write the token contract, vesting and claim logic and the web interface around them. Tokenomics, legal classification, marketing and any airdrop rules are the client's decisions and responsibility. We cannot promise a token price, trading volume or user numbers.
Can you build KYC and AML features?: We can connect identity verification and monitoring providers, store audit trails and build review queues for your compliance staff. Which checks are required, and what counts as compliant, depends on your licence and country. We implement your documented rules and do not decide them.

Ready to scope your software project?

Message us on WhatsApp or Telegram with the product, the users and your timeline.

Chat on WhatsApp Chat on Telegram