nsisong

Designed and implemented core backend services as modular APIs, integrating LLM function calling protocols for real-time content generation. Adopted a strict Test-Driven Development (TDD) approach, ensuring 100% test coverage for critical endpoints while maintaining high implementation velocity. Architected scalable database schemas to support complex service integrations, optimizing data fetching processes to be 20x faster. Built robust API integrations for third-party services (ads, analytics) ensuring developer friendly documentation and maintainability. Refined backend infrastructure to support higher concurrency, reducing latency for customer-facing AI experiences.

Engineered a high throughput automation layer to interface directly with Mindray machines and Hematology analyzers, eliminating manual data entry and human error. Developed a custom middleware to parse and transmit HL7 (Health Level Seven) messages, ensuring seamless bidirectional communication between laboratory hardware and the hospital's central database. Handled low-level serial/network socket programming to capture raw machine output, transforming unstructured data into validated, production-ready JSON payloads for the backend. Implemented a strict validation engine to ensure 100% accuracy of patient results during the automated transfer, critical for clinical diagnostic reliability.

Designed and developed smart contract systems powering a decentralized peer-to-peer financial platform. Built backend services integrating blockchain events with real-time application dashboards. Implemented decentralized liquidity mechanisms enabling automated asset exchange. Developed scalable backend APIs supporting secure financial transactions. Optimized blockchain event processing pipelines, reducing latency and improving system performance.

Developed and optimized Ethereum based smart contracts for the MGO token ecosystem to facilitate in-game purchases and eSports tournament rewards. Architected decentralized peer-to-peer (P2P) payment structures for secure transactions between gamers and developers. Enhanced smart contract security by implementing industry standard access control patterns, effectively protecting tournament reward pools from unauthorized withdrawals.

Developed and optimized Ethereum based smart contracts for the MGO token ecosystem to facilitate in-game purchases and eSports tournament rewards. Contributed to smart contract development for a blockchain-based decentralized marketplace for IT hardware and services. Assisted in building the logic for the Multicoin (MTCN) utility token to enable peer-to-peer trading without intermediaries. Conducted rigorous unit testing and security simulations to ensure the MTCN token was resilient against common EVM vulnerabilities like reentrancy and integer overflow.

Developed smart contracts for a rewards and review ecosystem on the NEM blockchain for the parenting products market. Engineered the native FPT token logic to enable cashback reward distribution and incentive based engagement. Optimized reward distribution algorithms to handle high transaction volumes while maintaining absolute data integrity across the decentralized review ledger.

Led the engineering of scalable backend systems for clients in medtech and fintech, scaling team operations to 11 members. Implemented modular microservices using Python and NestJS, utilizing Redis-backed caching to cut response times by 35%. Enforced TDD workflows and automated testing pipelines across all projects to reduce regression risks. Engineered AI-powered automation solutions that reduced manual workload by streamlining complex business logic into efficient API services. Managed full lifecycle deployment using Docker and GitHub Actions, ensuring smooth CI/CD transitions for high-traffic applications.