Hello, World!
I'm Louis Nguyen
Software Engineer passionate about building scalable systems and transforming data into insights
About Me
I'm a software engineer passionate about building scalable, data-driven systems and real-time analytics solutions. My expertise spans full-stack development and data engineering, with a focus on building efficient data pipelines and impactful user interfaces. I prioritize rapid prototyping, performance optimization, and aligning solutions with business needs.
When I'm not coding, you can find me travelling, playing spikeball, weight training, or reading up about credit cards.
Education
University of Wisconsin - Madison
Aug 2020 – May 2024Bachelor of Science in Computer Science, Data Science
Madison, WI
- •GPA: 3.6 / 4.0
- •Relevant Coursework: Data Structures & Algorithms, Computer Organization, Data Modeling, AI
- •Extracurriculars: Theta Tau Engineering Fraternity, Vietnamese Student Association, Web Development Club
Certifications
AWS Certified Solutions Architect – Associate
Jan 2025 – Jan 2028Amazon Web Services
Seattle, WA
Validated expertise in AWS cloud architecture, services, and best practices.
Skills
Languages
Technologies
Databases
Cloud & DevOps
AI & Agentic
Work Experience
Software Engineer II
Aug 2024 – PresentExpedia Group
Seattle, WA
- •Engineer on the Service Data team, building the real-time and historical data infrastructure powering Workforce Management reporting for Expedia's global contact center operations.
- •Discovered a data mismatch between Salesforce and AWS Connect causing inaccurate agent productivity tracking, then owned end-to-end design and delivery of a self-healing AWS Lambda reconciliation system to resolve it, recovering $3M in annual revenue.
- •Built a Kafka streaming pipeline processing 5M+ events daily for 200+ lodging partners, enabling real-time analytics and performance monitoring.
- •Spearheaded team adoption of AI agentic tools (Claude Code, MCP) as the go-to resource for agentic workflows.
- •Reduced Druid SQL query runtime by 80% (5s to 1s), boosting OLAP performance for business analytics.
- •Automated UI deployment scripts with Python, saving 10+ hrs/week and cutting deployment failures by 70%.
- •Developed GraphQL APIs in Node.js powering real-time data access across high-traffic frontend applications, serving 10M+ requests daily.
- •Managed vendor engineers to migrate legacy dashboards to real-time in-house solutions, cutting load times by 3x.
- •Mentored an engineering intern in developing a Node.js Lambda notification scheduler, automating configurable stakeholder reminders via email and messaging.
- •Maintained Spark (Scala) and Airflow ETL workflows with data quality checks, ensuring data freshness and accuracy for 50+ stakeholders.
Software Engineer Intern
May 2023 – Jul 2023Expedia Group
Seattle, WA
- •Built real-time analytics dashboards in React.js and TypeScript with responsive, data-driven visualizations.
- •Developed GraphQL APIs in Node.js to serve analytics data, enabling efficient access across frontend applications.
- •Implemented reusable and modular UI components improving code maintainability and developer productivity.
- •Wrote unit and integration tests for API and UI behavior, increasing coverage and reducing regressions.
Computer Science Tutor
Sep 2023 – May 2024University of Wisconsin - Madison
Madison, WI
- •Provided one-on-one and group tutoring in Java and Python, improving students' problem-solving skills.
- •Assisted students with debugging, unit testing, and code reviews, reinforcing best coding practices.
Software Engineer Intern
May 2022 – Aug 2022Thomson Reuters
Minneapolis, MN
- •Enhanced UI/UX by modernizing a React.js and JavaScript frontend, improving accessibility and usability.
- •Refactored legacy jQuery code into React.js components, reducing technical debt and improving maintainability.
- •Gained exposure to Agile development methodologies, conducting code reviews and unit testing.