1. RenewLink: Decentralized Energy-Sharing Network
A blockchain-powered IoT platform featuring smart meters, energy tokenization, verifiable data streams, and decentralized governance for peer-to-peer energy trading.2. Cross-Border Payments Mobile Wallet
Multi-chain wallet solution with AI-powered transaction monitoring, compliance automation, and support for BTC, ETH, BSC, Polygon, XRP, and Tron networks.3. Bitcoin Lightning Infrastructure
Complete Bitcoin infrastructure including Core nodes (mainnet/testnet/signet), Lightning Network (LND, CLN), ElectrumX indexer, custom explorer, and wallet-as-a-service backend.4. GCBuying – Crypto Asset Trading Platform
A secure and scalable trading platform for digital assets featuring automated wallet management, liquidity optimization, and real-time market operations. Designed using a microservices architecture, the system powers smooth deposits, withdrawals, trading execution, and treasury automation for both web and mobile users.GCBuying Website
Next.js-powered responsive website with high-performance pages, SEO optimization, and real-time trading indicators. Includes secure user onboarding, KYC integration, and a fully dynamic dashboard connected to the backend trading engine.GCBuying Mobile Apps
Flutter-based mobile apps for Android & iOS with seamless wallet operations, real-time order status, price alerts, notifications, identity verification, and a streamlined deposit/withdrawal experience. Built with background sync, biometric security, and lightning-fast UI interactions.Backend & Infrastructure of GCBuying
NestJS microservices with Kafka, Redis, MongoDB, and RabbitMQ ensure high throughput and fault tolerance. Includes multi-chain wallet infrastructure, secure asset management, automated hot/cold wallet flows, admin panel, audit logs, and a production-grade observability pipeline for stability and performance under real-world load.
1. Blockchain & Web3
solidity • ethereum • bitcoin • lightning network • web3.js • ethers.js • hardhat • foundry
2. Backend & Systems
nodejs • nestjs • express • python • go • rust • microservices • event-driven architecture
3. Frontend
react • nextjs • typescript • tailwindcss • flutter
4. Databases & Messaging
mongodb • postgresql • redis • rabbitmq • kafka
5. DevOps & Infrastructure
docker • kubernetes • nginx • aws • google cloud • terraform • ci/cd
6. Cryptography & Security
hd wallets • mpc/tss • encryption • key management • secure enclaves
7. Observability & Reliability
opentelemetry • otel collector • prometheus • grafana • loki • elasticsearch • kibana • sentry • betterstack • winston • pino • alerting • uptime monitoring
