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I'm James Lee, a senior software engineer specializing in building scalable full-stack web apps, mobile experiences, SaaS platforms, and AI-powered automation. Over the past decade I've led projects from concept to production, using PHP/Laravel, React, Next.js, React Native, Flutter, Node.js, and Python, with a cloud-native approach and a strong focus on performance and reliability. I love applying AI integration and modern web technologies to improve business operations and user experiences. I thrive in collaborative, cross-functional teams and enjoy mentoring engineers to deliver maintainable code, robust architectures, and elegant solutions across web, mobile, and cloud environments.…I'm James Lee, a senior software engineer specializing in building scalable full-stack web apps, mobile experiences, SaaS platforms, and AI-powered automation. Over the past decade I've led projects from concept to production, using PHP/Laravel, React, Next.js, React Native, Flutter, Node.js, and Python, with a cloud-native approach and a strong focus on performance and reliability. I love applying AI integration and modern web technologies to improve business operations and user experiences. I thrive in collaborative, cross-functional teams and enjoy mentoring engineers to deliver maintainable code, robust architectures, and elegant solutions across web, mobile, and cloud environments.

James Lee

Full Stack Developer, Web Developer, Back-End Developer, +6

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I'm James Lee, a senior software engineer specializing in building scalable full-stack web apps, mobile experiences, SaaS platforms, and AI-powered automation. Over the past decade I've led projects from concept to production, using PHP/Laravel, React, Next.js, React Native, Flutter, Node.js, and Python, with a cloud-native approach and a strong focus on performance and reliability. I love applying AI integration and modern web technologies to improve business operations and user experiences. I thrive in collaborative, cross-functional teams and enjoy mentoring engineers to deliver maintainable code, robust architectures, and elegant solutions across web, mobile, and cloud environments.…I'm James Lee, a senior software engineer specializing in building scalable full-stack web apps, mobile experiences, SaaS platforms, and AI-powered automation. Over the past decade I've led projects from concept to production, using PHP/Laravel, React, Next.js, React Native, Flutter, Node.js, and Python, with a cloud-native approach and a strong focus on performance and reliability. I love applying AI integration and modern web technologies to improve business operations and user experiences. I thrive in collaborative, cross-functional teams and enjoy mentoring engineers to deliver maintainable code, robust architectures, and elegant solutions across web, mobile, and cloud environments.

Available to hire

I’m James Lee, a senior software engineer specializing in building scalable full-stack web apps, mobile experiences, SaaS platforms, and AI-powered automation. Over the past decade I’ve led projects from concept to production, using PHP/Laravel, React, Next.js, React Native, Flutter, Node.js, and Python, with a cloud-native approach and a strong focus on performance and reliability.

I love applying AI integration and modern web technologies to improve business operations and user experiences. I thrive in collaborative, cross-functional teams and enjoy mentoring engineers to deliver maintainable code, robust architectures, and elegant solutions across web, mobile, and cloud environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Full Stack & AI Systems Engineer at Petual

September 1, 2025 - Present

Led modern web platform rebuilds and cloud infrastructure; managed AWS services including EC2, VPC, RDS, ECS, S3, Elasticsearch; deployed across 100+ hosted domains on Bluehost, A2 Hosting, GoDaddy, Namecheap, and Hostinger; built a real-time messaging system for clients, contractors, and agents using Node.js and Socket.io; mentored 10+ engineers; implemented modular architecture, code reviews, and testable design patterns; established CI/CD pipelines with Bitbucket to reduce deploy times and improve release reliability.

Software Engineer at Petual

September 1, 2025 - Present

AI enterprise software startup focused on automating audit, compliance, and SOX testing using agentic AI.

Software Engineer

July 1, 2021 - August 1, 2025

Led alignment between engineering and product teams. Built ERP, POS, and ticketing systems from scratch using Laravel and React.js; implemented modules for HR, orders, commissions, and geo-location (Lead Maps). Automated synchronization across 30+ POS branches by integrating Microsoft Dynamics AX with Windows Server and MS SQL Server using custom automation scripts. Architected hybrid cloud infrastructure combining AWS services with on-prem Linux systems to improve scalability, reliability, and secure data exchange. Implemented real-time messaging and notification enhancements in inventory and operations; improved overall workflow processes.

Software Engineer at Retool

July 1, 2021 - August 31, 2025

Aligned engineering and product teams to accelerate delivery; built ERP, POS, and ticketing modules from scratch using Laravel and React.js; implemented HR, orders, commissions, currency handling (USD), and geolocation features; migrated legacy frameworks to modern React components; created APIs (REST/GraphQL) and UI modules; automated HR and ordering workflows; collaborated with product managers and designers to deliver scalable features.

Software Engineer at Reto

July 1, 2021 - August 1, 2025

Built new products from zero to one; led optimization of native code and processes, improving app launch speed by 37%.

Technical Lead at Yelp

January 1, 2021 - July 1, 2021

Directed engineering efforts for optimized ad placements and targeted campaigns, contributing to a $500K revenue increase. Improved customer satisfaction by 25% through new service protocols. Scaled systems to support hundreds of microservices and thousands of daily API calls; architected cloud infrastructure and led UI/UX improvements to boost user engagement.

Software Engineer at Yelp

January 1, 2021 - July 1, 2021

Increased ad revenue by $500K through optimized ad placements and targeted campaigns. Improved customer satisfaction by 25% through new service protocols and response strategies.

Full Stack Engineer

May 1, 2017 - January 2, 2021

Developed full-stack web solutions using PHP, Java, Laravel, Node.js, Next.js, TypeScript, and Vue.js. Migrated legacy frameworks (WordPress, vtiger, Smarty templates, Laravel Blade) to modern React.js/Next.js with TypeScript; built GraphQL and RESTful APIs for frontend and mobile-app developers; performed comprehensive testing with Postman. Deployed and maintained web applications across cloud and on-prem hosting (WHM, cPanel, Plesk, DirectAdmin; Linux and Windows Server). Created and maintained CI/CD pipelines with Bitbucket; managed hosting across cloud providers and on-premise infrastructure.

Full Stack Engineer at Yelp

May 1, 2017 - January 1, 2021

Led development of web and mobile features, delivering scalable user experiences and collaborating cross-functionally to improve product quality.

Software Engineer at John Deere

May 1, 2016 - May 1, 2017

Maintained web applications used by buyers and dealers; provided secure RESTful web services with Spring Boot and AngularJS; analyzed product services to reduce server costs by 33% and integrated with Java (Spring, JPA, Maven, JUnit, CI).