I am a senior full-stack engineer based in Taipei, Taiwan, with experience across IT security, blockchain, gaming, and climate-tech SaaS. I have built identity and authentication products from the ground up and enjoy working on systems that require strong reliability, security, and performance.
I helped ship ATKey.Login and AuthFi on the W3C WebAuthn standard, where I worked on core cryptographic and authentication flows. I also delivered on-prem and SaaS versions of these products for multiple clients, scaling them to support high concurrency and secure enterprise use cases.
At SenecaESG, I architected and improved a multi-product platform covering ESG disclosure, emissions accounting, and portfolio ESG scoring. My work focused on Spring Boot microservices, polyglot persistence, async processing, observability, and security hardening.
I am especially strong in backend engineering, protocol implementation, performance optimization, and refactoring legacy systems into cleaner modular architectures. I have repeatedly improved system throughput, reduced infrastructure costs, and eliminated bottlenecks such as N+1 query patterns and oversized data models.
My technical background includes Java, Python, JavaScript/Node.js, SQL, Spring Boot, Hibernate, PostgreSQL, Redis, MongoDB, Elasticsearch, Docker, Kubernetes, Azure AKS, Kafka, RabbitMQ, GitHub Actions, Jenkins, and related DevOps and testing practices. I also have experience with OAuth2/OIDC, JWT, Keycloak, PKI, and WebAuthn.
I am fluent in Mandarin and advanced in English, and I hold a B.S. in Electrical Engineering from National Taiwan University of Science and Technology. I am looking for challenging backend or full-stack engineering opportunities where I can contribute to secure, scalable, and high-performance products.
Architected the Epic platform as a Spring Boot / Java 17 multi-tenant microservice cluster for ESG reporting. Worked with PostgreSQL, MongoDB, Redis, Elasticsearch, Kafka, and Spring Cloud Stream. Hardened security with OAuth2/OIDC, JWT, and QueryDSL injection defenses. Productionized on Azure AKS with Helm, GitHub Actions, Liquibase, and Datadog. Improved performance, reduced MongoDB costs, eliminated N+1 query issues, and optimized infrastructure usage.
Led ATKey.Login, a SaaS authenticator integrating biometric authentication with Microsoft Azure AD for secure Windows logins. Built a W3C WebAuthn-based PKI and delivered on-prem and SaaS versions of AuthFi and ATKey.Login for multiple clients. Designed scalable architectures and dedicated cryptographic-operation servers to improve throughput.
Built a Discord chatbot backend for e-shop, NFT asset queries, credit management, and blockchain wallets using Node.js, Express, MongoDB, Discord.js, and AWS EC2. Delivered the project in one month and supported 800+ real-time users.
Architected merchant-portal front-end features including order lifecycle and pricing logic. Refactored batch AJAX into delayed async-controlled request groups to work around API concurrency limits and added responsive layouts plus Google Maps overlays for order and delivery visualization.
Built UX features for the Nova88 casino portal in React, including a real-time betting leaderboard. Improved daily active users through A/B testing and reduced page load time by optimizing React hooks and refactoring the project to SOLID and Atomic design principles.
B.S. in Electrical Engineering
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