Full Stack Dev: Dual FinTech & Crypto Trading Platforms (9-10 Weeks, React Native) (Android, ios and Web platform) We are hiring an expert team/agency for a demanding 13-week parallel development project to build two production-grade financial platforms: 1. FinTech Platform (Subscription-Based) * Focus: Fiat management, regulated compliance, lending, staking, and basic crypto-fiat services. * Key Features: Custodial wallets (fiat/crypto), Immutable Transaction Ledger, Card Deposit Integration (1 API for Visa/MC/Debit), Collateralized Lending with Automated Liquidation (LTV monitoring), and a Configurable AML Engine. * Performance: API Latency < 300ms. 2. Crypto Platform (Real-Time Trading) * Focus: Real-time data handling, secure custodial wallet management, and a robust trading interface. * Key Features: Support for 10 initial cryptocurrencies, WebSocket-based streaming for real-time market data, Market/Limit Order Management, Multi-Sig Wallet Design support, and Subscription Gating (Free, Pro, Premium tiers). * Performance: Market Data Latency < 1 second; 5,000 concurrent WebSocket users. Technical Requirements & Deliverables * Mobile Tech: Mobile application development using React Native. * Architecture: Scalable backend/API development, Containerized microservices (Docker), Uptime target 99.9%. * Compliance: Full KYC/KYB integration, Audit logging. * Handover: Source code, architecture diagrams, API documentation, and CI/CD manuals. * Post-Launch: 2 Months of complimentary bug fix support. Critical Constraints & Application * Timeline is strict: 9-10 Weeks total. * Payment Term: 20% upfront, remaining per milestone (due 7 days after delivery). * Exclusions: Costs of third-party APIs/hosting, legal compliance, or post-support maintenance after 2 months are not covered. To Apply, confirm: * Ability to meet the 9-10-week parallel development schedule. * Experience with React Native and building scalable financial platforms. * Confirmation of understanding the latency and concurrency requirements.