Available to hire
I am Sean Chen, a Senior Full Stack Developer with over 8 years of experience in web and mobile application development. I specialize in full stack solutions, debugging, and technical consulting, guiding developers through complex challenges to keep projects on track. My work spans a wide array of technologies, enabling me to provide comprehensive support across the stack and communicate technical ideas clearly.
I thrive in collaborative environments, mentoring junior engineers, designing scalable APIs, optimizing performance, and delivering mobile-responsive interfaces that boost user engagement and client satisfaction.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Work Experience
Senior Software Engineer at Halson Tech
May 1, 2018 - PresentLed the development of dynamic single-page applications using Vue 3, ensuring rapid load times and smooth user interactions for diverse client projects. Integrated third-party APIs such as Stripe and OpenAI, enabling secure payment processing and AI-driven features with minimal latency. Optimized user flows from quiz completion to checkout, reducing drop-off rates by 15% through intuitive UI design and transitions. Implemented responsive designs with Tailwind CSS, ensuring consistent performance across desktops, tablets, and smartphones. Enhanced application security by implementing best practices in API authentication, data validation, and session management. Collaborated with UI/UX designers to develop soft loading states and smooth animations, elevating overall user engagement. Automated deployment pipelines using Webpack and CI/CD tools, accelerating release cycles by 20%. Mentored junior developers, improving team coding standards and reducing bugs in production environments. Perf
Software Engineer at SysAid
May 1, 2018 - August 6, 2025Built interactive web pages using Vue.js, focusing on user experience and smooth state transitions to keep users engaged. Integrated Stripe payment gateway for secure and seamless transaction processing in multiple projects. Utilized Tailwind CSS to rapidly develop responsive and aesthetically pleasing interfaces aligned with client branding. Collaborated with backend teams to connect front-end components with RESTful APIs, ensuring reliable data flow. Enhanced app performance by implementing lazy loading and code splitting techniques in Vue applications. Automated testing processes using Cypress, identifying and fixing bugs before deployment for higher quality releases. Participated in daily stand-ups and sprint planning, contributing to agile development cycles and timely project delivery. Documented features and interfaces clearly for easier onboarding and future maintenance by other developers. Optimized images, scripts, and stylesheets for faster page loads, improving user satisfa
Senior Software Engineer at Capgemini
May 1, 2018 - PresentDesigned and implemented modular automation systems to repurpose long-form videos into short clips, increasing efficiency. Integrated no-code tools and custom scripts to automate social media content creation including titles, captions, and hashtags, reducing manual work by half. Built dashboards to monitor posting and engagement metrics facilitating data-driven decisions. Automated thumbnail creation, affiliate link management, and notifications to improve operational efficiency and responsiveness. Created detailed documentation and visual maps for maintainability. Collaborated with content creators to optimize workflows and aligned outputs with brand style. Integrated AI tools for auto-captioning and summary generation to boost accessibility and engagement. Ensured system scalability and reliability with thorough testing and provided training for ongoing management. Contributed to strategic planning for AI and automation feature enhancements, achieving a 25% increase in social media
Software Engineer at SysAid
May 1, 2018 - August 12, 2025Supported the development of automated workflows for content repurposing, cutting manual editing and upload times. Integrated video editing tools such as Wisecut and Opus Clip into automation pipelines. Enhanced system robustness through troubleshooting and optimizing trigger conditions. Developed branded social media templates to accelerate content deployment. Created scripts for auto-generating engaging titles, captions, and hashtags using ChatGPT to boost discoverability. Designed Google Sheets dashboards for real-time post status and analytics monitoring. Ensured cross-platform content distribution with consistent branding across major social networks. Documented workflows with visual maps and user guides for onboarding. Collaborated with content creators to refine automation features based on feedback and improved user experience. Implemented scalability features to manage growing content volume and platform diversity.
Senior Software Engineer at Capgemini
May 1, 2018 - PresentDesigned and implemented a modular automation system repurposing long-form videos into short clips, improving content efficiency by 40%. Integrated no-code tools and custom scripts to automate metadata generation, reducing manual workload by 50%. Built dashboards to track metrics and automate branding workflows using Canva API. Automated affiliate link insertion and notifications for operational improvements. Created thorough documentation and visual system maps for maintainability. Collaborated with creators to optimize workflows aligned with brand style. Integrated AI tools for captions and summaries to boost engagement. Led testing, troubleshooting, and training for system reliability and scalability, achieving a 25% rise in social media engagement.
Software Engineer at SysAid
May 1, 2018 - August 12, 2025Supported development of automated workflows for content repurposing that cut manual editing/uploading time. Integrated video editing tools such as Wisecut and Opus Clip into automation pipelines. Troubleshot automation failures and optimized triggers for reliability. Created social media post templates for brand consistency and faster deployment. Developed ChatGPT-based scripts for titles, captions and hashtags to improve discoverability. Designed dashboards for real-time post monitoring. Facilitated cross-platform distribution and documentation, collaborating with content creators to improve automation features and scalability.
Senior Software Engineer at Capgemini
July 1, 2025 - August 27, 2025Led the development of scalable web applications using the MERN stack, improving load times by 30%. Designed and maintained RESTful APIs for high-volume data transactions and implemented authentication and authorization protocols to enhance security. Optimized database queries, resulting in 20% faster data retrieval. Mentored junior developers reducing bugs by 15%, collaborated with cross-functional teams in Agile settings, integrated third-party APIs and cloud services, and set up CI/CD pipelines to increase release frequency. Utilized Docker for containerization, led migration of legacy systems, documented technical specifications, and developed mobile-responsive interfaces boosting user engagement by 25%. Implemented unit and integration tests with Jest to increase test coverage.
Software Engineer at SysAid
June 1, 2019 - August 27, 2025Built dynamic front-end components with React, improving user interaction efficiency. Created and maintained server-side logic with Node.js and Express.js. Managed MongoDB databases ensuring data integrity and optimized storage. Collaborated with designers on responsive UI/UX designs. Integrated third-party authentication like OAuth and configured Git workflows for version control. Participated in sprint planning and retrospectives to improve workflows, implemented testing suites for code reliability, deployed applications on cloud platforms ensuring availability, and refined API endpoints to improve data handling and security.
Senior Software Engineer at Capgemini
July 1, 2025 - August 27, 2025Led development of scalable web applications using the MERN stack, improving load times by 30%. Designed and maintained RESTful APIs supporting high-volume data transactions. Implemented authentication and authorization protocols, enhancing application security. Optimized database queries, resulting in 20% faster data retrieval. Mentored junior developers, reducing bugs by 15%. Collaborated with cross-functional teams in Agile environments to deliver features on time. Integrated third-party APIs and cloud services to extend functionalities. Set up CI/CD pipelines, increasing release frequency. Utilized Docker for containerization, simplifying deployment processes. Led migration of legacy systems to MERN architecture. Documented technical specifications and API endpoints. Participated in system architecture planning. Developed mobile-responsive interfaces, improving user engagement by 25%. Implemented unit and integration tests with Jest, boosting test coverage.
Software Engineer at SysAid
June 1, 2019 - August 27, 2025Built dynamic front-end components with React, improving user interaction efficiency. Created and maintained server-side logic with Node.js and Express.js. Managed MongoDB databases, ensuring data integrity and optimized storage. Collaborated with designers to implement responsive UI/UX designs. Integrated third-party authentication services like OAuth. Configured Git workflows to facilitate collaboration and code versioning. Participated in sprint planning and retrospectives. Implemented testing suites to ensure code reliability. Deployed applications on cloud platforms, ensuring high availability. Refined API endpoints to improve data handling and security.
Senior Software Engineer at Capgemini
July 1, 2025 - August 27, 2025Led the development of scalable web applications using the MERN stack, improving load times by 30%. Designed and maintained RESTful APIs to support high-volume data transactions. Implemented authentication and authorization protocols enhancing security. Optimized database queries for 20% faster data retrieval. Mentored junior developers, reducing bugs by 15%. Collaborated with cross-functional teams in Agile environments to deliver features on time. Integrated third-party APIs and cloud services, set up CI/CD pipelines for automated testing and deployment, and utilized Docker for containerization. Led migration efforts from legacy systems to modern MERN architecture, developed mobile-responsive interfaces increasing user engagement by 25%, and implemented unit and integration tests with Jest to boost test coverage.
Software Engineer at SysAid
June 1, 2019 - August 27, 2025Built dynamic front-end components with React to improve user interaction efficiency. Created and maintained server-side logic with Node.js and Express.js. Managed MongoDB databases ensuring data integrity and optimized storage. Collaborated with designers for responsive UI/UX designs. Integrated third-party authentication services like OAuth for streamlined login processes. Configured Git workflows for collaboration and versioning. Participated in sprint planning and retrospectives to enhance team workflows. Implemented testing suites to ensure code reliability and deployed applications on cloud platforms to ensure high availability. Refined API endpoints to improve data handling and security.
Senior Front-End Developer at Capgemini
August 1, 2025 - September 3, 2025Led performance profiling and enhancements for React dashboards, achieving a 40% rendering time reduction and improving user experience. Refactored complex state management for real-time trading data to ensure minimal latency. Implemented virtualization and code-splitting to optimize load times for large data sets and charts. Designed reusable, accessible UI components with consistent design patterns. Collaborated with backend teams to optimize WebSocket data streams and network overhead. Developed performance metrics and monitoring routines to maintain application health. Enhanced responsiveness and user experience of critical trading screens. Applied responsive design and WCAG accessibility standards. Integrated charting libraries for dynamic financial data visualizations. Conducted code reviews and mentored junior developers. Maintained code quality and consistency with ESLint and Prettier. Automated UI component testing using Jest and React Testing Library. Optimized network reques
Mid-Level Front-End Developer at SysAid
June 1, 2019 - September 3, 2025Developed responsive UI components for high-performance trading dashboards to improve multi-device usability. Used React hooks and context for efficient state management, reducing unnecessary re-renders. Integrated data visualization libraries to display real-time market data with minimal latency. Participated in performance audits to identify bottlenecks and recommend rendering improvements. Collaborated with UX/UI designers to enhance layout responsiveness and accessibility compliance. Maintained frontend build pipelines using webpack and Vite, streamlining workflows. Authored unit and integration tests to ensure component stability. Assisted in optimizing WebSocket data handling for streaming updates, minimizing stale data. Contributed to design system components adhering to consistency and accessibility standards. Documented best practices to facilitate onboarding.
Senior Front-End Developer at Capgemini
August 1, 2025 - September 3, 2025Led performance profiling and enhancements for React dashboards, reducing rendering time by 40% and improving user experience. Refactored complex state management to improve responsiveness of real-time trading data views with minimal latency. Implemented virtualization and code-splitting to optimize load times for large data tables and charts. Designed and deployed reusable UI components ensuring accessibility and consistent design patterns. Collaborated with backend teams to optimize WebSocket data streams, reducing network overhead. Developed performance metrics and profiling routines to monitor application health. Enhanced UX for critical trading screens, increasing user engagement. Applied WCAG accessibility standards and responsive design best practices. Integrated charting libraries for dynamic financial visualizations. Conducted code reviews and mentored junior developers on React and performance techniques. Maintained code quality using ESLint and Prettier. Automated testing wi
Mid-Level Front-End Developer at SysAid
June 1, 2019 - September 3, 2025Developed responsive UI components for high-performance trading dashboards enhancing usability across devices. Implemented React hooks and context for efficient state management reducing unnecessary re-renders. Integrated data visualization libraries for real-time market data with minimal latency. Participated in performance audits identifying bottlenecks and proposing rendering speed improvements. Collaborated with UX/UI designers to enhance responsiveness and accessibility compliance. Maintained frontend build pipelines with webpack and Vite, streamlining workflows. Wrote unit and integration tests to ensure component stability. Assisted in optimizing WebSocket data handling for streaming updates. Contributed to design system components enforcing consistency and accessibility. Documented code and best practices facilitating onboarding.
Senior Full Stack Developer at Capgemini
August 1, 2025 - September 29, 2025Led end-to-end development of scalable web applications, reducing load times by 30% through backend and frontend optimizations. Mentored junior developers to improve coding standards and accelerate delivery. Designed and implemented RESTful APIs for third-party integrations. Collaborated with cross-functional teams to deliver SaaS solutions, increasing customer retention by 20%. Automated deployments with Jenkins and Docker, shortening release cycles by 40%. Conducted code reviews, optimized database queries, and applied security best practices to safeguard applications. Supported performance troubleshooting and ensured reliable version control with Git.
Full Stack Developer at SysAid
June 1, 2019 - September 29, 2025Developed client-side features using React and Vue.js to improve UI responsiveness. Built backend modules with Node.js and Express for dynamic data processing. Integrated front-end components with REST APIs to enable real-time updates. Maintained and optimized SQL and NoSQL databases. Collaborated with designers to implement intuitive UI/UX and wrote unit/integration tests to ensure stability. Supported deployment and monitoring of web applications on cloud platforms.
Senior Full Stack Developer at Capgemini
August 1, 2025 - September 29, 2025Led end-to-end development of scalable web applications, reducing load times by 30% through optimized backend and frontend integrations. Mentored junior developers, improved coding standards, and accelerated project delivery. Designed and implemented RESTful APIs and contributed to SaaS solutions, increasing customer retention. Automated deployment pipelines with Jenkins and Docker, reducing release cycles by 40%. Collaborated with cross-functional teams, assisted clients with performance troubleshooting, and developed mobile-responsive interfaces. Conducted code reviews, optimized database queries, ensured security best practices, and maintained Git workflows while documenting technical specifications for knowledge sharing.
Full Stack Developer at SysAid
June 1, 2019 - September 29, 2025Developed client-side features with React and Vue.js, built backend modules with Node.js and Express, and integrated front-end components with REST APIs for real-time data updates. Maintained and optimized SQL and NoSQL databases, collaborated with designers on intuitive UI/UX, wrote unit and integration tests, and contributed to code reviews. Supported deployment and monitoring on cloud platforms, resolved cross-browser compatibility issues, and documented features and troubleshooting steps to facilitate onboarding.
Education
Bachelor of Science at University of the Philippines
April 1, 2011 - September 1, 2015Bachelor of Science in Computer Science at University of the Philippines
April 1, 2011 - September 1, 2015Bachelor of Science in Computer Science at University of the Philippines
April 1, 2011 - September 1, 2015Bachelor's Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Bachelor’s Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Bachelor's Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Bachelor's Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Bachelor’s Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Bachelor's Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Bachelor's Degree in Computer Science at University of the Philippines
September 1, 2012 - April 1, 2017Qualifications
Industry Experience
Software & Internet, Financial Services, Media & Entertainment, Professional Services, Computers & Electronics
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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