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Hi, I'm Kelly Feng, a passionate Full-Stack Developer with extensive experience building scalable and efficient products using modern web technologies. I thrive on optimizing user experiences and driving growth through data-driven decisions, SEO, and innovative frontend and backend solutions. I enjoy working collaboratively to solve complex problems, especially where technology and marketing intersect. With a strong background in multiple programming languages and frameworks, I'm always eager to learn new tools and contribute meaningfully to any team or project.…Hi, I'm Kelly Feng, a passionate Full-Stack Developer with extensive experience building scalable and efficient products using modern web technologies. I thrive on optimizing user experiences and driving growth through data-driven decisions, SEO, and innovative frontend and backend solutions. I enjoy working collaboratively to solve complex problems, especially where technology and marketing intersect. With a strong background in multiple programming languages and frameworks, I'm always eager to learn new tools and contribute meaningfully to any team or project.

Yi Feng

Full Stack Developer, Developer, Web Developer, +3

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Hi, I'm Kelly Feng, a passionate Full-Stack Developer with extensive experience building scalable and efficient products using modern web technologies. I thrive on optimizing user experiences and driving growth through data-driven decisions, SEO, and innovative frontend and backend solutions. I enjoy working collaboratively to solve complex problems, especially where technology and marketing intersect. With a strong background in multiple programming languages and frameworks, I'm always eager to learn new tools and contribute meaningfully to any team or project.…Hi, I'm Kelly Feng, a passionate Full-Stack Developer with extensive experience building scalable and efficient products using modern web technologies. I thrive on optimizing user experiences and driving growth through data-driven decisions, SEO, and innovative frontend and backend solutions. I enjoy working collaboratively to solve complex problems, especially where technology and marketing intersect. With a strong background in multiple programming languages and frameworks, I'm always eager to learn new tools and contribute meaningfully to any team or project.

Available to hire

Hi, I’m Kelly Feng, a passionate Full-Stack Developer with extensive experience building scalable and efficient products using modern web technologies. I thrive on optimizing user experiences and driving growth through data-driven decisions, SEO, and innovative frontend and backend solutions.

I enjoy working collaboratively to solve complex problems, especially where technology and marketing intersect. With a strong background in multiple programming languages and frameworks, I’m always eager to learn new tools and contribute meaningfully to any team or project.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Full-Stack developer - Growth Team at AfterShip

June 30, 2025 - July 28, 2025

Developed company product and landing pages using Next.js; optimized SEO performance with Lighthouse and Ahrefs, leading to higher page rankings. Launched multiple SEO-focused free tool pages using React.js, Tailwind, and WebGL, increasing organic traffic. Built and maintained a CMS with Next.js, Payload, Redis, and Elasticsearch, enabling 90% of page configurations without developer intervention. Designed and implemented an AI-powered translation and review tool integrated with the CMS for multilingual site deployment in 38 languages. Developed in-house data tracking SDK and A/B testing tools using PostHog to support data-driven product decisions.

Full-Stack developer - Growth Team at AfterShip

June 30, 2025 - July 28, 2025

Developed company product and landing pages using Next.js; continuously optimized SEO performance with Lighthouse and Ahrefs, resulting in higher page rankings. Launched multiple SEO-focused free tool pages (image resizer, AI-based name generator, BFCM statistic dashboard, etc) with React.js, Tailwind and WebGL, contributing to increased organic traffic. Built and maintained a CMS with Next.js, Payload, Redis and Elasticsearch, enabling 90% of page configurations without developer intervention. Designed and implemented an AI-powered translation and review tool integrated with the company’s CMS, automating the multilingual site deployment process of 38 languages. Developed in-house data tracking SDK and A/B testing tools to support data-driven product decisions using PostHog.

Full-Stack developer - Growth Team at AfterShip

June 30, 2025 - July 28, 2025

Software Engineer - WFM Team at Infor

February 29, 2024 - July 28, 2025

Maintained and developed features for the Human Resource Management System as a full-stack developer. Refactored the duty management module, migrating from Vanilla JavaScript, jQuery, AngularJS and Java 8 to Angular and Kotlin. Ensured feature parity through Jasmine unit testing with 85% coverage percentage. Developed a system for work shift management and collaborated with QA to convert manual testing procedures into automated BDD UI test cases using Cucumber. Built an offline check-in system using Service Worker, enabling automatic data synchronization upon network recovery.

Software Engineer - WFM Team at Infor

February 28, 2024 - July 28, 2025

Maintained and developed features for the Human Resource Management System as a full-stack developer. Refactored the duty management module migrating from Vanilla JavaScript, jQuery, AngularJS, and Java 8 to Angular and Kotlin, ensuring feature parity with Jasmine unit testing at 85% coverage. Developed a work shift management system and collaborated with QA to automate BDD UI test cases using Cucumber. Built an offline check-in system with Service Worker for automatic data synchronization upon network recovery.

Software Engineer - WFM Team at Infor

February 28, 2024 - July 28, 2025

Maintained and developed features for the Human Resource Management System as a full-stack developer. Refactored the duty management module, migrating from Vanilla JavaScript, jQuery, AngularJS and Java 8 to Angular and Kotlin. Ensured feature parity through Jasmine unit testing with 85% coverage. Developed a system for work shift management and collaborated with QA to convert manual testing procedures into automated BDD UI test cases using Cucumber. Built an offline check-in system using Service Worker, enabling automatic data synchronization upon network recovery.

Front-end developer - Seller at Shopee

September 30, 2023 - July 28, 2025

Designed and developed a web portal for visual Flink data pipeline management using Nuxt.js, improving data warehouse team operating speed by 40%. Maintained a low-code platform for generating customized chart reports with Vue.js. Implemented a SQL parsing and visualization platform using Canvas and Node.js for intuitive tracking of column-level data lineage. Participated in building the in-house front-end component library using React.js and Echarts.

Front-end developer - Seller at Shopee

September 30, 2023 - July 28, 2025

Designed and developed a web portal for visual Flink data pipeline management using Nuxt.js, improving data warehouse team operating speed by 40%. Maintained a low-code platform for generating customized chart reports using Vue.js. Implemented a SQL parsing and visualization platform using Canvas and Node.js, enabling intuitive tracking of column-level data lineage. Participated in building the in-house front-end component library using React.js and Echarts.

Front-end developer - Seller at Shopee

September 30, 2023 - July 28, 2025

Designed and developed a web portal for visual Flink data pipeline management using Nuxt.js, improving data warehouse team operating speed by 40%. Maintained a low-code platform for generating customized chart reports using Vue.js. Implemented a SQL parsing and visualization platform using Canvas and Node.js, enabling intuitive tracking of column-level data lineage. Participated in building the in-house front-end component library using React.js and Echarts.