DNDat Nguyen
@datnguyen3
Senior Full Stack Java Engineer with 10+ years of experience.
United StatesWhat I'm looking for
I am a Senior Full Stack Java Engineer with over a decade of experience in building enterprise-grade, API-driven systems. My expertise lies in utilizing Java and Spring Boot, seamlessly integrated with modern Angular frontends. I have a proven track record of designing microservices architectures and implementing secure, scalable payment platforms, particularly in the healthcare and fintech sectors.
Throughout my career, I have been part of Agile teams, where I honed my skills in CI/CD, DevOps pipelines, and UI/UX collaboration. My work has consistently focused on maintaining HIPAA and PCI compliance while delivering high-quality software solutions. I take pride in my ability to develop innovative solutions that enhance user experience and drive business success.
Experience
Work history, roles, and key accomplishments
Senior Full Stack Software Engineer
EitBiz
Jan 2023 - Present (2 years 6 months)
Developed REST APIs in Java (Spring Boot) for real-time claim submission, integrating with a clearinghouse engine to maintain 99.9% first-pass acceptance across payers. Built Angular 14 modules and services with Angular Material components to support patient billing interfaces, scheduling workflows, and in-app payment plans.
Senior Software Engineer
V4 Development LLC
Mar 2020 - Jan 2023 (2 years 10 months)
Implemented Java-based RESTful microservices for full payment lifecycle (request, capture, refund, void), optimized through Spring Boot and Hibernate with acquirer-specific modules. Built dynamic routing engine using customer geolocation, transaction metadata, and acquirer SLAs to improve success rate by 18% while lowering transaction costs.
Software Engineer III
Saigon Technology
Mar 2018 - Mar 2020 (2 years)
Built voice-to-text dictation module leveraging browser Web Speech API, and synchronized input stream with custom text buffer for seamless transcription. Designed Angular SPA with advanced text editor supporting formatting, image/table embeds, and real-time content save using IndexedDB and service workers.
Software Engineer I
Saigon Technology
Apr 2016 - Mar 2018 (1 year 11 months)
Delivered core backend functionality in Java for custom CMS templates and client-side configuration syncing. Assisted in refactoring monolithic services into modular endpoints using Spring MVC, improving code reuse and maintainability.
Software Engineer II
Saigon Technology
Apr 2016 - Mar 2018 (1 year 11 months)
Built full-stack Java services to support templated report storage, recurrence scheduling, and role-based access control (RBAC). Developed Angular components with Angular Material for form validation, autosave drafts, and manager-level submission overrides.
Junior Software Developer
Saigon Technology
Apr 2016 - Mar 2018 (1 year 11 months)
Supported bug fixes and enhancements for internal tools and client sites built with Java (Spring) and AngularJS. Collaborated on documentation for Swagger API definitions and endpoint contracts to standardize API usage.
Full Stack Software Developer
Saigon Technology
Sep 2015 - Apr 2016 (7 months)
Delivered Java-based API endpoints for admin portals and customer dashboards. Built HTML5/AngularJS SPAs with service integration to Spring Boot backends, implementing interactive charts using Chart.js.
Education
Degrees, certifications, and relevant coursework
TUThu Dau Mot University
Bachelor's Degree, Computer Science
Obtained a Bachelor's Degree in Computer Science. The curriculum covered fundamental computer science principles and programming concepts.
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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