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I'm a Senior Full Stack Engineer with 10+ years of experience building and scaling SaaS and enterprise web applications using React, TypeScript, and Node.js. I thrive on turning complex problems into robust, scalable solutions and enjoy collaborating with product and design teams to deliver value quickly. I have hands-on experience with modern cloud architectures (AWS), containerization (Docker), and modern frontend and backend frameworks. I’m passionate about performance, quality, and building maintainable systems that grow with the business.…I'm a Senior Full Stack Engineer with 10+ years of experience building and scaling SaaS and enterprise web applications using React, TypeScript, and Node.js. I thrive on turning complex problems into robust, scalable solutions and enjoy collaborating with product and design teams to deliver value quickly. I have hands-on experience with modern cloud architectures (AWS), containerization (Docker), and modern frontend and backend frameworks. I’m passionate about performance, quality, and building maintainable systems that grow with the business.

Jia Cheng Yan

Full Stack Developer, Front-End Developer, Back-End Developer

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I'm a Senior Full Stack Engineer with 10+ years of experience building and scaling SaaS and enterprise web applications using React, TypeScript, and Node.js. I thrive on turning complex problems into robust, scalable solutions and enjoy collaborating with product and design teams to deliver value quickly. I have hands-on experience with modern cloud architectures (AWS), containerization (Docker), and modern frontend and backend frameworks. I’m passionate about performance, quality, and building maintainable systems that grow with the business.…I'm a Senior Full Stack Engineer with 10+ years of experience building and scaling SaaS and enterprise web applications using React, TypeScript, and Node.js. I thrive on turning complex problems into robust, scalable solutions and enjoy collaborating with product and design teams to deliver value quickly. I have hands-on experience with modern cloud architectures (AWS), containerization (Docker), and modern frontend and backend frameworks. I’m passionate about performance, quality, and building maintainable systems that grow with the business.

Available to hire

I’m a Senior Full Stack Engineer with 10+ years of experience building and scaling SaaS and enterprise web applications using React, TypeScript, and Node.js. I thrive on turning complex problems into robust, scalable solutions and enjoy collaborating with product and design teams to deliver value quickly.

I have hands-on experience with modern cloud architectures (AWS), containerization (Docker), and modern frontend and backend frameworks. I’m passionate about performance, quality, and building maintainable systems that grow with the business.

Skills

Experience Level

Expert

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Language

English

Advanced

Work Experience

Senior Full Stack Engineer at Freelance / Self Employed

January 20, 2024 - Present

Created a reusable component library with Material UI and integrated Storybook to streamline development and enforce consistency across projects. Led migration of a React-based CRM platform to Next.js, improving performance, scalability, and maintainability. Implemented Apollo GraphQL client caching to reduce network requests and latency by up to 90%, enhanced accessibility, and optimized rendering for large datasets. Partnered with product and design teams to introduce performance monitoring and optimization techniques, delivering measurable improvements in load times and user satisfaction.

Full Stack Developer at Anh Sin Technology Sdn. Bhd.

October 20, 2023 - December 20, 2023

Developed enterprise-grade web applications using React and TypeScript for international clients. Implemented backend services in Node.js and integrated third-party APIs with scalable microservice-based systems. Designed reusable UI component libraries and improved frontend performance by ~25% through refactoring and UI optimization. Improved PostgreSQL and MongoDB schemas, improving data retrieval. Implemented modular backend components supporting multi-environment deployments. Deployed and managed AWS infrastructure (EC2, RDS, S3, Lambda) ensuring high availability and performance.

Software Engineer at Witty Data Sdn. Bhd.

November 1, 2017 - June 1, 2023

Software Engineer at Atos

February 20, 2015 - September 20, 2017

Built enterprise-grade web applications using JavaScript, integrated with RESTful backends. Implemented backend services in Node.js and integrated third-party APIs with scalable microservice-based systems. Designed reusable UI component libraries and improved frontend performance by ~25% through refactoring and UI optimization. Improved PostgreSQL and MongoDB schemas, improving data retrieval. Implemented modular backend components supporting multi-environment deployments. Deployed and managed AWS infrastructure (EC2, RDS, S3, Lambda) ensuring high availability and performance.

Internship Trainee at Atos

October 1, 2014 - December 1, 2014

Responsible for daily operations and support of Mainframe and AS400 systems, including batch job scheduling, monitoring, and workload automation using Tivoli Workload Scheduler.