STELLA XIAOYUN HSIN
Anaheim,CA
Summary
Dedicated and self-motivated Software Engineer with 5+ years of experience. Strong problem-solving skills and a passion for creating efficient and effective solutions. Able to adapt to new technologies and work collaboratively in a team environment. Looking to leverage expertise to contribute to the success of a dynamic software development team.
Overview
6
6
years of professional experience
Work History
Full Stack Engineer
Allievate Financial
06.2023 - Current
- Tech Stack: TypeScript, Node.js, GraphQL, PostgreSQL, Sequelize, Next.js, React, Redis, Azure Service Bus, Docker, GitLab CI/CD, Azure Container Apps
- Led end-to-end development of a real-time Underwriting Service, reducing evaluation time from 2–7 minutes to less than 2 second, dramatically increasing sales agent productivity and accelerating deal velocity.
- Replaced legacy underwriting logic with a stateless, configuration-driven microservice, enabling non-engineering teams to update 70+ rules without deployments and significantly reducing engineering support overhead.
- Spearheaded development of a new client dashboard (Next.js, SCSS), increasing daily active logins from negligible levels to 800+ users/day and improving client visibility into program progress.
- Designed scalable frontend architecture using Atomic Design principles, creating reusable component libraries and responsive layouts adopted across teams.
- Implemented SSR and Server Components in Next.js to reduce client-side JavaScript, improve SEO, increase initial page load performance, and securely isolate sensitive data-fetching logic (e.g., credit report APIs).
- Integrated Redis caching for high-throughput APIs, cutting response times and improving overall dashboard responsiveness under load.
- Resolved critical data integrity issues by implementing SSN-based identity resolution and multi-account merging, eliminating enrollment conflicts and ensuring accurate client portal records.
- Refactored Azure Service Bus logic and commonly used utilities into shared internal NPM packages, improving modularity, reducing duplication, and accelerating development across multiple services.
- Established CI/CD pipelines, Docker-based build workflows, and Azure Container Apps deployments for the Campaign microservice, improving release reliability and reducing deployment time.
- Collaborated closely with engineers and cross-functional partners, contributing to architecture discussions, debugging complex issues, and conducting code reviews to uphold quality standards.
Full Stack Engineer
Movn Health
06.2022 - 06.2024
- Tech Stack: Next.js, React, Recoil, SASS, Node.js, GraphQL, Capacitor, MySQL, Sequelize, Firestore, Pub/Sub, AngularJS, React Native
- Contributed to the comprehensive life cycle development of dashboard web application customized for healthcare professionals, alongside a patient-focused mobile application.
- Played an instrumental role in crafting reusable components and pages. Actively involved in the integration of video call and chat features, improving communication capabilities within the application. Orchestrated data refinement using scripts, ensuring data integrity and usability. Employed a stack encompassing Next.js, React, recoil, SASS, Node.js, GraphQL, Capacitor, MySQL, Sequelize and Firestore to accomplish these objectives.
- Developed and implemented a high-capacity feature enabling bulk upload of patient data via CSV and Excel formats, significantly streamlining the process of entering thousands of records simultaneously. Utilized Pub/Sub messaging to orchestrate seamless communication between various backend microservices, facilitating the efficient creation and management of patient charts in a MySQL database.
- Architected a GraphQL microservice, pivotal to the operation of mobile and web applications.
- Maintained operational integrity of the legacy dashboard and mobile application, constructed utilizing AngularJS and React Native frameworks.
- Engineered UI optimizations to enhance performance, guaranteeing rapid loading times and delivering a frictionless user experience across both web and mobile applications.
- Collaborated with UX designers and product managers to translate wireframes and prototypes into high-quality user interfaces.
- Collaborated with backend engineers to ensure seamless integration between the frontend and backend systems.
Software Engineer
Science Systems and Applications, Inc.
01.2020 - 05.2022
- Tech Stack: HTML5, CSS3, Bootstrap, JavaScript, jQuery, AngularJS, Java (Liferay), Groovy, SQL, PHP, Twig, Freemarker, ElasticSearch, Solr, Drupal, AJAX, JSON
- Developed applications utilizing a comprehensive technology stack including HTML5, CSS, Bootstrap, Java, JavaScript, jQuery, and AngularJS for esteemed clients such as NASA and NOAA.
- Proficient in both front-end and back-end development.
- Developed frontend of the GLOBE Observer App using AngularJS, HTML5, CSS3, JavaScript, AJAX, and JSON. Implemented two-way data binding for real-time model-view updates, ensured input validation, and integrated accessibility best practices for inclusivity and compliance.
- Contributed to the development and enhancement of the NASA-sponsored GLOBE project, involving approximately 90% module customization; Engineered and tailored Java-based Liferay modules through MVC Portlet to align with client requirements, incorporating filters for web content and integrating ElasticSearch queries for dynamic data retrieval. Executed frontend development using CSS, JavaScript, JQuery, and Freemarker, with a focus on responsive design via Bootstrap and media queries. Leveraged Groovy Scripts and SQL functions to ensure efficient database updates.
- Assumed responsibility for the daily administration of the MyNASAData project, including bug resolution, feature integration, and system upgrades. Adapted PHP-based modules to meet client expectations and orchestrated frontend development employing CSS, JavaScript, JQuery, and Twig. Executed critical upgrades of Solr and Drupal to ensure compliance with NASA’s stringent security mandates.
- Proficiently used various tools, including JIRA for project management, Git for version control.
- Demonstrated a consistent track record of efficiently meeting project deadlines and delivering high-quality software solutions.
Education
B.S. - Economics
University of California, Berkeley
CS50 Introduction to Computer Science
Harvard University (edX)
Accelerated Web Development Program
LearningFuze
Skills
- React
- Nextjs
- Nodejs
- Javascript
- JQuery
- TypeScript
- HTML5
- Recoil
- Redux
- SCSS
- GraphQL
- PostgreSQL
- Sequelize
- React Native
- Capacitor
- Firestore
- Java
- Python
- Continuous integration
- Continuous deployment
- User interface development
- API integration
- Responsive web design
Timeline
Full Stack Engineer
Allievate Financial
06.2023 - Current
Full Stack Engineer
Movn Health
06.2022 - 06.2024
Software Engineer
Science Systems and Applications, Inc.
01.2020 - 05.2022
CS50 Introduction to Computer Science
Harvard University (edX)
Accelerated Web Development Program
LearningFuze
B.S. - Economics
University of California, Berkeley