Vivian Nguyen

Senior Software Engineer | Platform & Full-Stack | Regulated Systems (Healthcare, Fintech)

Bellevue, Washington, United States

About

Senior Software Engineer with 8+ years of experience across platform engineering, developer tooling, and full-stack systems in regulated industries including fintech, healthcare, and government. I have built shared platform components, client SDKs, Snowflake and Databricks integrations, and production-grade services with a focus on reliability, developer experience, and maintainable systems.

Experience

  • Senior Software Engineer at Amazon
    Mar 2026 - Present · 4 mos

    Embedded with Amazon’s LEO/Kuiper RF validation team, building the automation infrastructure and internal tooling that powers vehicle-based RF drive testing through INSPYR Solutions. - Developed full-stack UI (AWS, React, FastAPI, Python) for real-time RF data visualization and hardware device control during live drive tests - Owned backend device integration: driver bring-up, TCP/UDP communication layers, and data pipeline reliability across hardware and internal systems - Built and maintained test automation frameworks and deployment pipelines for an in-house RF validation product - Partnered with RF and systems engineers to support test execution at scale across Kuiper’s vehicle testing program

  • Senior Software Engineer at Capital One
    Feb 2025 - May 2026 · 1 yr 4 mos

    - Built shared TypeScript platform components and an open-source Python client SDK supporting Capital One Software’s data platform. - Built integrations for an ML-based optimization system delivering automated Databricks job cost reductions. - Delivered reusable React widgets and integrations for Snowflake and Databricks users, enabling consistent UI patterns and faster feature delivery. - Owned features end-to-end from requirements and design reviews through implementation, release, and production support.

  • Software Engineer II at 1upHealth, Inc.
    Sep 2023 - Jul 2024 · 11 mos

    - Developed frontend and backend services using TypeScript (React, Node.js, AWS Lambda) supporting healthcare FHIR data extraction operations against EHR systems. - Implemented refresh token and access token authentication flows to enable SSO integrations with external hospital systems. - Improved platform reliability and correctness through production ownership, incident triage, and performance improvements. - Delivered full-stack features across REST APIs, data flows, and operational tooling to support clinical data ingestion and serving.

  • Senior Software Engineer (Contract) at Independent Consulting (Replay.io, Steampunk)
    Jan 2022 - Sep 2023 · 1 yr 9 mos

    - At Replay.io: Reduced non-deterministic Firefox browser state (C++) and built Python CI/CD automation tooling; reduced compile times by 44%. - Reduced AWS S3 costs by 15% by improving scaling of Kubernetes-based archival infrastructure. - At Steampunk: Built Docker-containerized Ruby on Rails backend services and React features supporting federal refugee and asylee application processing for USCIS.

  • Full Stack Software Engineer at AGI SureTrack
    May 2020 - Sep 2021 · 1 yr 5 mos