SEN CAI
Long Island City
Summary
Skilled Software Engineer with 6+ years in designing and developing full-stack applications and backend services. Expertise in Java, Spring Boot, TypeScript, Node.js, and RESTful APIs, focused on creating reliable systems for real-time operations. Experienced in the full software development lifecycle, from requirements gathering to deployment and optimization, with a strong track record of managing complex projects and integrating diverse systems.
Overview
9
9
years of professional experience
Work History
Full-Stack Software Engineer
NJ Transit
Newark
10.2020 - Current
- Designed, developed, and maintained frontend features and real-time REST APIs delivering accurate train and light rail schedules to public-facing digital signage.
- Led the redesign of Newark Light Rail signage UI using Vue.js and TypeScript, improving accessibility, responsiveness, and long-term maintainability.
- Built performant UI components that transformed live operational data into clear, user-focused arrival and service information, enhancing user experience.
- Collaborated with product managers, designers, operations teams, and vendors to deliver intuitive, user-focused experiences, ensuring alignment with project goals.
- Debugged production issues across the full stack, identified root causes, and drove permanent fixes.
- Enhanced system reliability and performance through validation, error handling, refactoring, and API optimization, resulting in more stable applications.
- Debugged production issues across the full stack, identified root causes, and drove permanent fixes.
Software Engineer
Solaricorp
Long Island City
01.2018 - 09.2020
- Designed and built a Staten Island Railroad (SIRR) public address (PA) announcement system from scratch, developing a Java-based backend service and a Vue.js frontend interface to manage real-time station announcements.
- Built the first-generation digital signage UI for MBTA stations in Boston by integrating with MBTA public data APIs to display real-time arrival and service information for customers.
- Developed inventory management application to track equipment utilities, inventory items, and identify low stock levels.
- Implemented backend services and data models to enhance inventory tracking and ensure vendor accountability.
Education
Bachelor of Science - Computer Science
St. John's University
Queens, NY05-2019
Skills
- Full-stack
- JAVA
- Springboot
- VueJS
- TypeScript
- NodeJS
- API integration
- MySQL
- MongoDB
- Oracle SQL
- Postgres
- OOP
- Web design
- UI design
Timeline
Full-Stack Software Engineer
NJ Transit
10.2020 - Current
Software Engineer
Solaricorp
01.2018 - 09.2020
Bachelor of Science - Computer Science
St. John's University