Hello, I'm Jennifer Hill.👋
👉 I'm a Senior Full Stack Engineer with
6 years of experience. I enjoy building web and mobile apps.

Contact me here

About me

Senior Full Stack Engineer with 6 years of experience
building and scaling SaaS platforms using React, Redux, Node.js, and MongoDB.
Strong background in performance optimization, database design and
scalable API architecture. Experienced working in product-driven, fast-growing tech companies. Comfortable collaborating in international English-speaking teams and contributing to system design decisions.

When I'm not coding, I enjoy playing badminton, watching movies, listening to music or
taking walks for a breath of fresh air.

My skills

My experience

Upto, China
- Led the development of high-performance SaaS applications using React and Node.js, boosting user engagement by 20% with faster load times and improved UI/UX.
- Designed and implemented RESTful and GraphQL APIs, cutting response times by 30% and ensuring seamless system integration.
- Built real-time notification systems with WebSockets, increasing user interaction by 15%, and optimized database performance for PostgreSQL and MongoDB, reducing data retrieval time by 25% during peak traffic.
- Managed Docker and AWS deployment pipelines, improving deployment speed by 40%, and conducted architecture reviews and mentorship, enhancing code quality and reducing production bugs by 18%.
Pinduoduo, China
- Developed responsive React and Next.js apps for SaaS clients, boosting user retention and performance by 15%.
- Implemented scalable state management with Redux Toolkit, reducing errors by 20%.
- Optimized backend services with Node.js and Express, improving API latency by 25%. Integrated front-end apps with REST and GraphQL APIs, enhancing system efficiency and data retrieval by 30%.
- Contributed to CI/CD automation, cutting manual errors by 50%, and collaborated with remote teams, delivering 10+ features per sprint with a 98% completion rate.

My projects

Matchbox

A powerful team collaboration and productivity platform that helps users manage projects, track tasks, and monitor performance with real-time updates and analytics.

  • React
  • TypeScript
  • Spring Boot
  • PostgreSQL
  • Tailwind CSS
  • Render
  • Vercel

EDU-XIE Online Examination Platform

A secure online exam platform with test creation, encrypted storage, anti-cheat, automated grading, and real-time analytics.

  • React
  • Next.js
  • TypeScript
  • MongoDB
  • Tailwind CSS
  • JWT
  • Framer Motion
  • Recharts

Contact me

Please contact me directly at jennifer0914H@outlook.com or through this form.