Crypto and Web3 development: exchanges, wallets, payments

Landing pages and onboarding that build confidence

Crypto products have to work harder for trust than ordinary SaaS. The first screen answers the key questions: what it is, who it is for, what the fees and risks are, and who is behind it. Sign-up stays short, and verification is step by step, with clear hints on which documents are needed and how long it takes.

Every funnel step is measured: where users drop off, which screen slows them down, which wording raises doubts. Then conversion rate optimization takes over with A/B tests, simpler forms and clearer error messages. We avoid hype and return promises; they damage trust and can break advertising rules on major platforms.

Dashboards, market data and real-time updates

The account area shows balances, transaction history, charts and prices. Data streams over WebSocket from exchanges such as Binance, Kraken and Coinbase or aggregators like CoinGecko and CoinMarketCap, so numbers update without a page reload. Tables with thousands of rows stay fast, and charts remain readable on a phone.

Interfaces are designed through our UX/UI design process with two modes: a simple one for newcomers and a detailed one for experienced users. Dark theme, precise number and currency formats and clear transaction statuses are the small things that decide whether people come back.

Wallet connection and Web3 features

For dApps and token projects we connect MetaMask, WalletConnect and other wallets through wagmi or ethers.js, support multiple networks and handle account and network switches gracefully. Private keys never reach our servers: transactions are always signed in the user's own wallet.

On-chain data comes from Alchemy, Infura or the Etherscan API, and prices from oracles such as Chainlink. When a project has smart contracts, we design the interface so users see exactly what they are approving before they sign. We recommend commissioning contract audits from specialist firms.

Accepting cryptocurrency payments

For stores and online services we integrate crypto payments through Coinbase Commerce, NOWPayments or similar gateways. The customer picks a coin and network, sees the amount and a QR code, and your site receives a webhook confirmation and updates the order automatically. Finance teams get exports and payment reconciliation.

When crypto payments are part of a larger operation, we connect them to your CRM and back office so managers see payments next to orders and customers. For higher volumes, a setup with a custody provider such as Fireblocks is an option.

Security, KYC and compliance

Security is built in from the first sprint: two-factor authentication, protection against the OWASP Top 10, rate limiting, audit logs, role-based admin access and secrets kept out of the codebase. User verification runs through Sumsub or Onfido, with check status shown right in the account.

KYC, AML and disclosure requirements depend on the jurisdiction, such as MiCA in the EU or state and federal rules in the US. Your legal team defines the checks and document texts; we implement them in the product.

Mobile apps and launch

Many users manage crypto only from their phone. We build Flutter mobile apps for iOS and Android with biometrics, transaction push notifications and the same API as the web version, and we account for App Store and Google Play policies for crypto apps. Timelines depend on screens and integrations; we estimate after a short brief.