Jimmy Lan

Software Engineer @

I'm always excited to bring my ideas to reality. Full-stack software engineer with 2-year expertise in React.js,TypeScript, Python, Java, and PostgreSQL.

Download Resume

Work Experience

Software Engineer

PolicyMe • May 2021 - Aug 2022, Jul 2024 - Current

Full-stack development using React.js, TypeScript, Python Flask, and PostgreSQL.

Built a modern portal enabling underwriting teams to process 400+ weekly insurance cases—boosting processing speed by 5x—using React.js, TypeScript, Python Flask, and PostgreSQL.

Designed and implemented a config-driven framework that automatically generates portal pages; cut developer time to build portal pages by 83%, reduced UI bugs by 80%, and championed the adoption of TypeScript.

Developed authorization system for underwriting portal, securing access for enterprise partners (CAA, CIBC, Blue Cross)—70% of company's revenue; implemented database schemas and Python Flask middleware.

Software Engineer

IXL Learning • May 2023 - July 2024

Full-stack development focused on educational software using React.js, Java, and PostgreSQL.

Led React/Java/PostgreSQL implementation of rostering & data integration in Account Viewer, supporting millions of students across school districts by enhancing data sync visibility and controls.

Migrated critical data sync and reporting jobs to new async computation framework, improving execution speed by ~30% and reducing troubleshooting time with clearer error diagnostics.

Improved daily student data sync algorithm (Java), strengthening data integrity and reliability across significant district partnerships, including 95 of the top 100 US school districts.

Projects

Anonymous Messaging Platform

Let It Fly

Let It Fly is an anonymous platform for people to send messages ("paper cranes") to each other. Built with React.js and Node.js microservices architecture.

React.jsNode.jsTypeScriptMicroservices

Source Code

Authentication System

Node Authentication Starter

Opinionated Node.js authentication starter code with TypeScript. Includes rate limiting, bearer/refresh token strategy, local strategy, and OAuth support.

TypeScriptNode.jsAuthenticationOAuth

Source Code

Interactive UI Components