Java Staff Engineer

• Design, code and maintain new features and products for the API
• Work on core features such as microservices architecture, cloud infrastructure and overall scalability
• Build main features such as USPS compliance logic, label rendering, pricing infrastructure
• Design the platform’s integration with marketplaces and Warehouse Management Systems to synchronize orders and shipments
• Clearly communicate with founders, other engineers, PMs and customers
• Write unit and regression tests
• Help build a team of junior developers 

•  +7 years of overall development experience
• Strong experience with Java and Spring Boot with at least 5 years of Java development
• Good English language skills
• Must master design patterns, Enterprise design patterns and algorithms
• Proficiency with relational and NoSQL databases
• Strong knowledge of Docker, Kubernetes and Google Cloud
• Experience with APIs and REST
• Experience with Javascript and React is a plus
• Open source github code is a plus 

Additional Note.

• Before applying, please make sure you could answer the following questions without peeking at stackoverflow and/or consulting chatgpt. Similar questions will be asked during the technical interview.
• What is a functional interface
• Explain Java garbage collection
• Implement a Singleton in Java and what you need to make it thread safe
• Describe multiple inheritance in Java
• How Dependency Injection works in Spring Boot
• What is the run-time for accessing entities in arrays, maps, etc.
• What is db normalization
• Techniques for synchronizing multiple Docker containers
• Mocking in Spring Boot unit tests

***not open to consulting companies and freelancer

• Remote 100%
• Overlap time: 4 hours per day, 8-10ham and 8-10hpm (vietnamtime). 4 hours flexibletime.