# Shawn Cui

> Software Engineer II at Amplitude

Location: San Francisco, California, United States
Profile: https://flows.cv/shawncui

A Software Engineer working at Amplitude. Graduated from University of Pennsylvania in 2018. Mainly work on backend services (mostly Java) and sometimes work on frontend (React).

## Work Experience
### Software Engineer II @ Amplitude
Jan 2021 – Present

### Software Engineer @ Amazon
Jan 2020 – Jan 2021 | Seattle, Washington, United States
- Involved in all phases of software development, including gathering requirements, service design, code implementation, testing, deployment and maintenance.
- Extensively made use of Java 8 features like Predicates, Functional Interfaces and Lambda Expressions, Method References and Stream API for bulk data operations on Collections.
- Built and used RPC services using Amazon internal RPC framework.
- Implemented application with Spring Core/IOC and Spring MVC.
- Designed and developed the front-end pages using TypeScript, React and Redux. 
- Used Log4j framework to log/track application. Set alarms using Amazon internal monitor tool.
- Developed JUnit test cases for unit testing, along with EasyMock and Mockito frameworks.
- Responsible to test performance of all services and scale them properly for high volume in the fourth quarter (holiday season).
- Used Git for source control and version management of all codes and resources.
- Provided high-quality documentation about technical details and implemented APIs.

### Java Developer @ Antra, Inc.
Jan 2018 – Jan 2020 | Dulles, Virginia, United States
- Followed the Agile methodology and Scrum to manage the full life cycle development.
- Set up Spring Security LDAP to authenticate and authorize users for a full stack application. 
- Developed Junit test cases along with Mockito, PowerMock, AssertJ frameworks and Spring integration testing support.
- Utilized Hibernate to map between Java objects and Microsoft SQL Server tables, and to communicate with data layer.
- Responsible to write SQL and JPQL queries to save and retrieve data like order details, update information, inventory information.
- Configured and explored RabbitMQ to establish asynchronous, durable and reliable message queue.
- Monitored RabbitMQ with New Relic and set alerts for memory and disk usage. 
- Developed a Web Service (SOAP, WSDL) Client to consume the SOAP services.
- Configured two-way SSL handshake for Web Service client with self-signed certificates utilizing OpenSSL.
- Utilized Kong gateway and Konga UI to secure (OAuth 2.0 plugin) and load-balance the APIs.
- Explored JMeter for load testing and VisualVM for performance analysis.
- Used Log4j framework and Loggly to log/track application.
- Configured Maven repositories and scheduled projects in TFS for continuous integration/continuous deployment (CI/CD).
- Used Git for source control and version management of all codes and resources.

### Teaching Assistant @ University of Pennsylvania
Jan 2017 – Jan 2017 | Philadelphia, Pennsylvania, United States
- Served as Teaching Assistant for Introduction to Networks and Protocols. 
- Tutored students face-to-face in office hours (two hours per week) and in recitation classes. 
- Assisted teacher to check examination paper and performed many supportive tasks.
- Highly proficient with networks and protocols like TCP, UDP, SSL, leaky bucket policy and so on.


## Education
### Master's degree in Electrical and Electronics Engineering
University of Pennsylvania
Jan 2016 – Jan 2018


## Contact & Social
- LinkedIn: https://linkedin.com/in/shawn-cui

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Source: https://flows.cv/shawncui
JSON Resume: https://flows.cv/shawncui/resume.json
Last updated: 2026-03-22