# Ah Hpu Sei > Software Engineer | Cloud Location: New York, New York, United States Profile: https://flows.cv/ah I'm a software engineer with a passion to innovate and solve complex business problems by utilizing computational tools. I like to tinker with cutting-edge software tools daily. Delivering high-quality products and innovative solutions are my top priorities. Technical Skill Set: Programming: Java, JavaScript (ES6), TypeScript, SQL, NoSQL, HTML, CSS Tools: Spring Boot, React, NodeJs, Express, MySQL, MongoDB, Git, AGILE, REST API Cloud: AWS, Lambda, EC2, S3, SQS, SNS, DynamoDb Interests: Industry: Financial Services, Retail, Education (not limited to this sector) Software Architecture && Topics: Microservices, Distributed Systems, System Design, Scaling, Big Data, Data Engineering ## Work Experience ### SWE Advisor @ Fiserv Jan 2026 – Present | Berkeley Heights, New Jersey, United States ### Software Engineer @ Fiserv Jan 2023 – Jan 2026 ### Full-Stack Java Developer @ Cognixia USA Jan 2022 – Jan 2023 | New Jersey, United States I worked for Ascendian's subsidiary Cognixia LLC. - Developed several Spring Boot REST APIs, implementing Spring Security, Hibernate, JPA, and Mockito Test Suite - Design Flexibility – experience with DAO and DTO design patterns, JDBC, JPA and Hibernate for interfacing with Data Persistence - Code Review and Testing – applied Test-Driven Development using Junit and Mockito Unit Testing for a Spring Boot REST API ### Software Engineer @ Capital One Jan 2022 – Jan 2023 | Plano, Texas, United States I was deployed by Ascendian. - Contributed to an event-based 8 microservices system running AWS Lambdas, EC2, SQS and DynamoDb - Implemented and released ~100 features and enhancements in TypeScript/NodeJs, Java involving API endpoints processing entities - Wrote unit tests, functional tests in Jest and Cucumber and ran end-to-end tests across different environments - Debugged and monitored production logs using AWS CloudWatch, Splunk and recommended enhancements to the leadership team - Maintained and monitored a Kafka stream processor in Java, Spring Boot - Configured Lambdas and EC2 to fail-over during region shutdown Resiliency test Tools: TypeScript, JavaScript, Java, NodeJs, Docker, DynamoDb, AWS Lambda, SQS, GIt, GitHub API, GitHub App ### Application Engineer @ BBullard Jan 2020 – Jan 2021 | New York, New York, United States Developed a cross-platform mobile application in React Native and Javascript providing well-being contents to users. Gathered functional requirements from product owner and turned them into technical design and soultions. Implemented 20+ API endpoints in Node uploading digital assets uploaded by content creators to AWS S3. ### Web Application Developer @ ZawFinancialSolutions Jan 2020 – Jan 2021 | New York, United States - Delivered a financial web application that allows users to subscribe and access contents - Implemented Subscription and Payment features that charge users monthly by using Stripe API - Developed an SMS notification system through which users get the latest updates of stock picker by utilizing Twilio API - Designed UI and tested the responsiveness of the app utilizing React and Semantic UI ### Student Software Developer @ CUNY Tech Prep Jan 2019 – Jan 2020 | New York, New York - Selected for a full-stack JavaScript program as one of 100 fellows out of 400+ applicants - Ideated, designed and implemented a full stack web application allowing end users to donate and search free items with the goal of saving resources - Implemented Authentication and BackEnd API endpoints by using Node, Express, Bcrypt and PostgreSQL - Designed FrontEnd pages using React and BootStrap ### Software Developer Intern @ Teromac Technologies Inc Jan 2020 – Jan 2020 | Greater New York City Area - Contributed to a web portal app which shows sales reporting of the vendors by using Angular and Asp.Net - Implemented SignIn Page in Angular which allows admin to log in and displays user’s name on the navigation bar - Added meaningful icons by using Angular Material and FontAwesome that improved UI/UX of the app - Improved and tested the responsiveness of the app by using utilizing Bootstrap, CSS and Chrome DevTools - Collaborated with CTO using Git and Bitbucket for project management and version control ### Software Engineer Intern @ Tailored Industry Jan 2019 – Jan 2019 | Greater New York City Area - Backend engineer in a team of 7 developers for Knitting Machine Controller (KMC) - Used Docker to host Python app and FTP server which provides manufacturing instructions for 3D knitting machine - Integrated RollBar API into KMC Python app to facilitate error reporting - Wrote a class in Python that can query API endpoint in JSON data and return as dictionary data structure - Participated as Scrum master during a two-week sprint - Assisted in the networking of 10 3D knitting machines - Created and documented topological network diagrams of network infrastructure using Lucid Chart ### Programming Tutor (Java) @ Brooklyn College Jan 2018 – Jan 2018 | Greater New York City Area - Clarified Object-Oriented programming (OOP), programming concepts, and common algorithms in Java to 20+ undergraduate students - Conducted 4 reviews, 2 sample tests, and Q&A sessions that improved student performance on exams - Collaborated with master tutors, managers, and professors to assist class size of 30 students ## Education ### Bachelor's degree in Computer Science Brooklyn College Jan 2017 – Jan 2020 ### Data Analytic COOP Careers Fellowship Jan 2021 – Jan 2021 ## Contact & Social - LinkedIn: https://linkedin.com/in/ericsei --- Source: https://flows.cv/ah JSON Resume: https://flows.cv/ah/resume.json Last updated: 2026-03-29