Hantsy Bai
Self-employed Consultant And Freelancer at Independent Consultant
Guangzhou City, Guangdong Province, China
Summary
🤩
Rockstar🎓
Top SchoolHantsy Bai is a seasoned software engineer and independent consultant with over 20 years in the industry and 14 years of active GitHub-backed development, specializing in migrating monoliths to microservices and designing reactive, REST/GraphQL architectures. He blends hands-on full-stack implementation (Spring Boot/WebFlux, Quarkus, Angular/Next.js) with pragmatic engineering practices like TDD, CI/CD automation, and containerization. An active open-source contributor, he has improved core projects such as Netflix DGS and Jakarta EE CargoTracker and won the 2012 JBoss Community Recognition Award for his community work. As an agile programming coach and technical blogger, he helps teams adopt scalable patterns (DDD, CQRS, EDA) while also contributing translations and reviews for influential books and courses. Based in Guangzhou, he combines deep backend expertise with front-end fluency, and a pragmatic habit of turning complex distributed-system challenges into maintainable, well-tested solutions.
14 years of coding experience
11 years of employment as a software developer
B.S. Food Science and Technology, B.S. Food Science and Technology at Jiangsu University
Chinese, English
Stackoverflow
8,687reputation
1.2mreached
192answers
194questions
spring
top-5%
spring-boot
top-5%
spring-webflux
top-5%
Github Skills (58)
jakartaee10
javascript10
bootstrap10
apidoc10
javaee10
testing10
user-authentication10
authentication10
spring-webflux10
spring-security10
spring-mvc10
wpgraphql10
java10
mongodb-database10
javas10
Programming languages (21)
Github contributions (5)
hantsy/angular-spring-reactive-sample
Dec 2017 - Jul 2022
RESTful API demos with Spring 6 WebFlux, Spring Boot 3, Spring Data Mongo, Spring Security, Spring Session and Angular (upgraded to v16)
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:2 reviews, 180 commits, 99 PRs in 4 years 7 months
Contributions summary:Hantsy contributed to the development of a RESTful API sample application using Spring Boot, Spring WebFlux, Spring Security, and Angular. Their work involved creating and modifying core application components, including the `Application.java` and test files for the server-side Java code. They added features like pagination and comment endpoints to the post controller and updated the project to the Angular 8.x version, demonstrating skills in both backend and frontend development.
angularmongodbrestrestful-apispring
hantsy/spring-webmvc-jwt-sample
Apr 2018 - Sep 2021
Secures REST APIs with Spring Security and JWT Token based Authentication
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 37 commits, 21 PRs in 3 years 5 months
Contributions summary:Hantsy primarily contributed to the back-end of the Spring Boot and JWT authentication sample. They focused on implementing features and refactoring code related to user authentication, data auditing, and API endpoints. They also updated the project dependencies and configurations, ensuring compatibility with newer Spring Boot versions and addressing specific issues, including the addition of brand filtering to endpoints.
jwtrestrest-apispringspring-security
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