Looking for a job

William Xin

@williamxin

Message

I build AI-enabled, real-time full-stack platforms for complex enterprise workflows.

Canada

Message

What I'm looking for

I'm looking to build practical AI-enabled and real-time products where strong frontend experiences, reliable backend systems, and enterprise workflow automation create measurable operational impact.

I've led risk and claims workflow development at Liberty Mutual Insurance, building React interfaces and Java/Spring Boot APIs for business-critical operations. I also added Python/FastAPI AI services for document retrieval, prompt orchestration, and structured LLM responses.

I modernized enterprise workflows, standardized AWS infrastructure with Terraform, and automated releases with GitHub Actions and Jenkins, cutting release cycle time by 60%. Better UI flows, backend automation, and fewer manual handoffs contributed to a 25% reduction in risk and claims processing time.

Across Joy, dYdX, Solv, and IBM, I've built SaaS collaboration tools, real-time trading interfaces, healthcare workflows, and enterprise banking and insurance UIs. I bring hands-on experience with React, Next.js, Node.js, GraphQL, cloud infrastructure, and reliable high-concurrency product experiences.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Liberty Mutual Insurance

Apr 2022 - Present (4 years 6 months)

Led development of internal risk and claims workflow platforms, building React-based interfaces and Java/Spring Boot APIs. Modernized legacy workflows, added AI-assisted features, and automated CI/CD, reducing release cycle time by 60% and contributing to a 25% reduction in processing time.

React Java Spring Boot Python fastAPI Docker Kubernetes Terraform AWS GitHub Actions Jenkins PostgreSQL AI LLM RAG Embeddings Vector Search

Senior Full Stack Engineer

Joy

Feb 2020 - Apr 2022 (2 years 2 months)

Delivered customer-facing SaaS features for wedding planning and guest coordination using React, Next.js, TypeScript, Node.js, GraphQL, and PostgreSQL. Reduced server latency by 60% for real-time RSVP workflows and established reusable component patterns.

React Next.js TypeScript NodeJS GraphQL PostgreSQL Docker Storybook

Lead Frontend Engineer

dYdX

Sep 2017 - Dec 2019 (2 years 3 months)

Built a high-throughput real-time trading interface with React, Redux, WebSockets, and data-rich UI patterns. Delivered millisecond-sensitive market updates and improved frontend responsiveness through performance tuning and bundle optimization.

React Redux WebSockets JavaScript Performance Optimization Charting

Full Stack Engineer

Solv

Jun 2014 - Jul 2017 (3 years 1 month)

Built healthcare workflow systems using structured backend services, PostgreSQL, and secure business logic. Integrated Twilio-based notifications, contributing to a 35% reduction in no-show rates, and developed operational dashboards with React and GraphQL.

React GraphQL PostgreSQL Twilio NodeJS Security RBAC

Frontend Developer

IBM

Apr 2012 - Mar 2014 (1 year 11 months)

Built enterprise UI features for banking and insurance systems using JavaScript, AngularJS/jQuery, HTML, CSS, and Java/Spring API integrations. Assisted with migration of legacy JSP pages to single-page applications.

JavaScript AngularJS jQuery HTML CSS Java Spring Framework