Louis Nguyen

Hello, World!

I'm Louis Nguyen

Software Engineer passionate about building scalable systems and transforming data into insights

About Me

Louis Nguyen

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 2024

Bachelor 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 2028

Amazon Web Services

Seattle, WA

Validated expertise in AWS cloud architecture, services, and best practices.

Skills

Languages

JavaJavaScriptPythonKotlinScalaHTMLCSSSQLCRTypeScript

Technologies

React.jsNext.jsNode.jsFlaskGraphQLSpring BootMicroservicesKafkaSparkRESTfulETL

Databases

MySQLPostgreSQLHiveScyllaDBApache DruidMongoDBS3

Cloud & DevOps

AWSDockerServerlessCI/CDGitHub ActionsSpinnakerJenkinsDatadogSplunk

Work Experience

Software Engineer II

Aug 2024 – Present

Expedia Group

Seattle, WA

  • •Led the development of a streaming pipeline using Kotlin Spring Boot, Apache Kafka and Cassandra, processing 5M+ events daily for 200+ lodging partners, enabling real-time analytics and performance monitoring.
  • •Directed a group of vendor engineers to migrate legacy analytical dashboards to in-house real-time dashboards, reducing load times from 30s to 3s.
  • •Optimized Apache Druid SQL queries by 80% (from 5s to 1s average query time), improving OLAP performance for business analytics.
  • •Identified a major manual bottleneck in the UI deployment process and automated release scripts with Python, saving 10+ hours per week and reducing deployment failures by 70%.
  • •Maintained and improved batch ETL workflows with Apache Spark (Scala) and Airflow, enhancing data accuracy and freshness for downstream reporting used by 50+ stakeholders.
  • •Set up monitoring and alerting with Datadog and Splunk, ensuring 99.9% availability and data integrity.
  • •Coordinated with 4 cross-geo engineering teams to align API contracts and data schemas.
  • •Mentored an engineering intern in developing a Node.js Lambda notification scheduler that automated configurable stakeholder reminders via email and messaging.
  • •Analyzed 5TB+ of historical data in Apache Iceberg data lake via Querybook, identifying data quality issues affecting 50% of customer operations reports and implementing validation fixes.

Computer Science Tutor

Sep 2023 – May 2024

University 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 2023 – Jul 2023

Expedia 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.

Software Engineer Intern

May 2022 – Aug 2022

Thomson Reuters

Minneapolis, MN

  • •Enhanced UI/UX by modernizing a React.js and JavaScript frontend, improving accessibility and usability.
  • •Gained exposure to Agile development methodologies, conducting code reviews and unit testing.
  • •Refactored legacy jQuery code into React.js components, reducing technical debt and improving maintainability.

Projects

Spotify Playlist Sync

Playlist Synchronization Tool

Jan 2023 – Jul 2023

  • •Developed a React.js web app with TypeScript, utilizing Spotify's API for user authentication and playlist comparison.
  • •Employed Google Firebase and Firestore to seamlessly deploy, host, and securely store data for the web application.
React.jsTypeScriptSpotify APIFirebaseFirestore

Wolfram's Cellular Automata

Complex Pattern Generator

Feb 2022 – Jun 2022

  • •Wrote a program in Python using NumPy and Matplotlib that visually generated Wolfram's cellular automata.
  • •Packaged the program into a web application using the Flask framework and hosted it on the Heroku Cloud Platform.
PythonNumPyMatplotlibFlaskHeroku

Cryptocurrency Trading Bot

Automated Trading Software

May 2021 – Aug 2022

  • •Designed a cryptocurrency trading algorithm that initiates trades when specified price targets are hit.
  • •Utilized Node.js to build the bot and establish a WebSocket connection to the Coinbase API to retrieve real-time market data.
Node.jsWebSocketCoinbase API

Get In Touch

GitHubLinkedIn