Kevin Zhang
EXPERTISE
BIO
Senior Software Engineer with 12+ years of experience in frontend and backend development, specializing in JavaScript frameworks, cloud solutions, and scalable, performance-driven architectures.
WORK EXPERIENCE
Senior Full Stack Engineer
Liberty Mutual Insurance
June 2023 - Present
- Led the design and development of a self-service claims dashboard using React.js and Node.js, now used by 100K+ customers. - Built a secure document upload and validation pipeline integrated with AWS Lambda, S3, and Cognito for identity compliance. - Refactored core services for scalability, introducing queue-based async processing with SQS and improved Lambda cold start times. - Developed feature toggling infrastructure for safe rollouts using LaunchDarkly and GitHub Actions. - Created internal design documentation and contributed to shared UI components for claims and billing tools. - Mentored junior developers and collaborated with product managers to define roadmap and cross-team API specs.
Software Engineer
Xicom Technologies
September 2020 - April 2024
- Built a multi-tenant e-commerce platform from scratch with React.js, Node.js, and PostgreSQL which supports over 50 businesses. - Designed and launched an analytics dashboard visualizing real-time transactions with PostgreSQL, Redis, and Chart.js. - Architected and implemented caching and pagination logic to reduce API response times by 60% under load. - Integrated Stripe, Avalara, and Plaid for payments, tax, and finance operations with full PCI compliance. - Introduced GraphQL federation for modularizing APIs between billing, inventory, and order subsystems. - Acted as lead engineer for a team of 4, reviewing pull requests and coordinating DevOps improvements across teams.
Full Stack Developer
WithJoy
May 2017 - August 2020
- Developed the entire event management suite from scratch using React, Node.js, and Prisma which supports 10K daily active users. - Created real-time RSVP syncing and messaging features using WebSocket and AWS Lambda with DynamoDB Streams. - Rewrote backend monolith to microservices, solving deployment scaling with Docker and GitHub Actions. - Built and maintained a shared UI component library using Storybook and design tokens to enforce consistency. - Implemented accessibility standards (WCAG 2.1) sitewide, improving Lighthouse scores by 40%.
Software Developer
Upcreatives Digital
May 2015 - April 2017
- Built enterprise reporting tools with Angular and Java backend for financial firms with high-volume data pipelines. - Designed a drag-and-drop dashboard builder with modular widgets and configurable data sources. - Worked closely with QA and design to iterate on frontend UX refinements and test automation.
Frontend Web Developer
Upcreatives Digital
May 2013 - May 2015
- Created responsive marketing websites and dashboards using AngularJS, HTML, Sass, and Bootstrap. - Refactored legacy jQuery-heavy codebases into modular Angular components with improved state handling. - Collaborated with designers and backend engineers to align API contracts and delivery timelines.
EDUCATION
Bachelor's Degree
ETH Zurich, April 2013
Computer Science
Verified Frontend Developer
8+ years of experience
Preferred commitment: Full Time
Languages
Skills
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