HCM - Principal Java Spring Boot/ Kotlin Engineer

Must-have: At least 8 years of experience in developing web applications Good understanding of SOLID principles, common design patterns and best practices Proficiency in Java and Kotlin for BE/willing to study Kotlin to write clear, readable, and maintainable code Container-based development (Docker, docker-compose, Kubernetes) experience Writing comprehensive and maintainable test code (must) Experience using, designing, and building GraphQL, Web Service APIs Extensive experience with Spring framework: Spring Boot, Spring Data, Spring Security, Spring Batch, Spring Cloud Knowledge of Domain Driven Development and Onion/Clean Architecture Solid experience with MySQL or PostgreSQL including performance tuning and optimization Agile/Scrum software development experience Experience in improving application security, performance, and operation Experience of leading a project as a team leader, educating team members Strong sense of ownership Nice-to-have: Strong knowledge of security and performance Strong Knowledge of microservices architecture design and implementation Willingness to learn and build a deep understanding Build and maintain application infrastructure built on AWS