Leo James

Leo James Senior Full Stack Engineer - - San Pablo City, Laguna, Philippine SUMMARY • Full Stack Web Developer with 7+ years of experience building scalable, high-performance web applications. • Proficient in frontend like React(Angular, Vue, Next) and backend like Node.js, Python frameworks for AIdriven solutions and PHP(Laravel, CI). • Expertise in RESTful and GraphQL APIs, microservices architecture, and implementing real-time features using WebSockets. • Skilled in deploying on Microsoft Azure and AWS (Lambda, EC2), ensuring scalable cloud-based solutions. • Strong background in Docker, Kubernetes, and CI/CD pipelines (GitHub Actions, GitLab CI, AWS CodePipeline) for streamlined, reliable deployment. WORK EXPERIENCE Senior Full Stack Web Developer MVP Asia Pacific [Remote] 06/2022 - 02/2025 • • • • • • Angeles City, Philippine Led the full development lifecycle of the platform using React.js for the front-end and Node.js (TypeScript) for the backend, improving app responsiveness by 44% and reducing load times. Designed and integrated Python-based AI solutions for automated monthly report generation and PDF data extraction, increasing processing speed by 63% and reducing manual errors in data handling. Architected and optimized microservices with RESTful APIs, facilitating a 25% improvement in system scalability and enabling seamless interaction between frontend and backend. Utilized Microsoft Azure for infrastructure scalability, employing Azure App Services, Azure SQL Database, and Azure Functions, resulting in high availability and 35% cost savings on cloud resources. Conducted code reviews and provided mentorship to junior developers, implementing performance optimizations such as lazy loading and efficient database queries that reduced server load by 22%. Implemented Agile methodologies, driving the team to meet deadlines consistently and improving project delivery by 18%. Full Stack Web Developer Green Tomato Limited [Remote] 02/2018 - 03/2022 • • • • • • Hong Kong Developed the Angular front-end and Node.js (JavaScript) backend, creating a real-time data display that reduced report generation time by 47%. Collaborated with the AI team to implement Python-based AI solutions for data extraction and generating financial reports, improving the financial report accuracy by 38%. Optimized RESTful APIs and improved data transfer speeds, achieving a 15% performance boost in the system's responsiveness. Utilized Microsoft Azure, including Azure Functions and Azure Blob Storage, for efficient data processing and hosting, resulting in reduced downtime by 27%. Contributed to the setup of CI/CD pipelines, automating deployment processes, which led to a 50% reduction in deployment time and improved overall code quality. Actively participated in sprint cycles, troubleshooting issues, and resolving blockers, increasing team velocity by 24%. Junior Web Developer Atos 09/2016 - 11/2017 • • • • • • Hong Kong Developed React.js components for a customer-facing web application, working closely with senior developers to implement interactive and responsive UI elements that enhanced user engagement. Assisted in writing SQL queries for data retrieval and supporting database operations, gaining hands-on experience in performance optimization and query design. Supported the backend team in building and maintaining API services in Node.js, contributing to the development of features that integrated seamlessly with the frontend. Participated in debugging and resolving issues in both development and production environments, ensuring that the application maintained uptime and performance. Helped optimize codebase by refactoring inefficient code and implementing improvements based on senior developer feedback, which increased the speed and readability of the application. Collaborated with designers to implement new features and ensured that the front-end UI aligned with design specifications. SKILLS & ABILITIES Language: C/C++, C#, JavaScript, TypeScript, Java, PHP, Python Frontend: React, Vue, Angular, Next, MUI, Antd, Tailwind CSS, Bootstrap, Responsive Design, UI/UX Backend: Node, Express, Nest, Django, FastApi, Flask, .NET, SpringBoot, Laravel, CodeIgniter, Database: MongoDB, MySQL, PostgreSQL, SQLite, Cosmos DB, T-SQL APIs: WebSocket API, RESTful API, GraphQL, QAuth, Web API integration Security: OAuth, JWT, API Gateway DevOps: AWS, CI/CD, Azure, Docker, Kubernetes, Cypress Mobile: React Native, Flutter LANGUAGES English Chinese EDUCATION Bachelor's Degree in Computer Science Hong Kong University of Science and Technology 09/2012 - 06/2016 • • • • Hong Kong Web Development Basic Programming Language Assembly Language Software engineering