https://diegooris.ch/ https://diegooris.ch/og-image.jpg Diego Henrique Oris de Roa Antunes — Senior Full Stack Engineer Portfolio Senior Full Stack Engineer specializing in MVPs, Web3, AI Systems, and Unity Game Development https://diegooris.ch/diego-avatar.jpg Diego Henrique Oris de Roa Antunes Portrait Diego Henrique Oris de Roa Antunes — Software Architect and Founder https://diegooris.ch/projects/solucione-1.png Solucione Multas LegalTech Platform & Admin Panel Complete LegalTech SaaS ecosystem with client onboarding, document OCR triage, and WhatsApp conversational AI https://diegooris.ch/projects/anjo-online.png Anjo Online High-Availability Philanthropic SaaS NestJS microservices platform on Google Cloud Run with Swiss TWINT and Brazilian Mercado Pago payment rails https://diegooris.ch/projects/pdf-to-maps-infographic.jpg pdf-to-maps Offline Geoprocessor & Cartography CLI Offline Node.js and C++ geoprocessing engine converting land deeds DMS/DD to SIRGAS2000 UTM and AutoCAD DXF https://diegooris.ch/projects/b2_promo_hero.png B2 Wallet Non-Custodial Multi-Chain Crypto Wallet Manifest V3 WebCrypto AES-256-GCM secure browser extension supporting 39+ EVM chains and Ledger hardware wallets https://diegooris.ch/projects/b2_send_eth.png B2 Wallet EVM Transaction Engine Optimized gas calculation, EIP-1559 transaction broadcast, and token swap integration https://diegooris.ch/projects/b2_diagnostics.png B2 Wallet Cryptographic Diagnostics & Security Audits Zero-trust cryptographic validation dashboard and hardware wallet connectivity telemetry https://diegooris.ch/projects/cryptoseed.jpg cryptoseed BIP39 Mnemonic Backtracking Algorithm Zero-dependency mnemonic recovery algorithm with Levenshtein distance backtracking across 39 blockchains https://diegooris.ch/projects/click-1.png Click Servicos Geolocation Service Marketplace Flutter BloC cross-platform mobile app with PostgreSQL and PostGIS real-time spatial indexing https://diegooris.ch/projects/click-2.png Click Servicos Real-Time Service Matching UI Instant spatial matching between on-demand customers and nearest certified technicians https://diegooris.ch/projects/zero-swap.png Zero Swap MEV-Protected AMM Decentralized Exchange Zero-slippage AMM DEX routing architecture with cryptographic flash-swaps and sandwich protection https://diegooris.ch/projects/gic-wallet.jpg GIC Wallet Pro Multi-Signature Corporate Custody Enterprise multi-signature treasury wallet with cryptographic key splitting and corporate governance logs https://diegooris.ch/projects/amazonic-1.jpg Amazonic Pay Cross-Border Crypto-Fiat Gateway Automated Layer 2 settlement payment infrastructure connecting fiat on-ramps under 0.5% transaction fees https://diegooris.ch/projects/amazonic-2.jpg Amazonic Pay Cross-Border Treasury Distribution Decentralized liquidity routing and merchant checkout widgets https://diegooris.ch/projects/blocks-game.jpg Match Blocks MVP Spatial Matching & Game Engine Unity 2D/3D and PostGIS spatial matching engine correlating cadastral boundaries at 10k records/min https://diegooris.ch/projects/bicon-1.png Bicon DEX Gas-Optimized AMM Protocol Solidity smart contract decentralized exchange cutting gas consumption by 30% https://diegooris.ch/projects/bicon-2.png Bicon DEX Liquidity Pools and Yield Analytics Automated market maker liquidity pool interfaces and impermanent loss calculators https://diegooris.ch/projects/young_caldeira_approved.png Young Market FinTech Tokenization Platform Asset tokenization and receivables settlement platform accelerated by InovAtiva Brasil and Instituto Caldeira https://diegooris.ch/projects/young_mockups.jpg Young Market Mobile App & Web3 Architecture Sports tokenization crowdfunding infrastructure with CVM regulatory compliance