Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm Hamdullah Mohamed Infas, a passionate full-stack software engineer currently based in Singapore. I specialize in building scalable web and mobile applications using React, Node.js, Java, and cloud services, delivering polished user interfaces and reliable APIs for startups and growing teams.\n\nI'm a strong believer in clean code, TDD, and collaborative development. I enjoy turning complex requirements into robust architectures, from data modeling and API design to cloud infrastructure, monitoring, and user experience optimization.…Hi, I'm Hamdullah Mohamed Infas, a passionate full-stack software engineer currently based in Singapore. I specialize in building scalable web and mobile applications using React, Node.js, Java, and cloud services, delivering polished user interfaces and reliable APIs for startups and growing teams.\n\nI'm a strong believer in clean code, TDD, and collaborative development. I enjoy turning complex requirements into robust architectures, from data modeling and API design to cloud infrastructure, monitoring, and user experience optimization.

Hamdullah Mohamed Infas

Full Stack Developer, Front-End Developer, Back-End Developer, +4





Hi, I'm Hamdullah Mohamed Infas, a passionate full-stack software engineer currently based in Singapore. I specialize in building scalable web and mobile applications using React, Node.js, Java, and cloud services, delivering polished user interfaces and reliable APIs for startups and growing teams.\n\nI'm a strong believer in clean code, TDD, and collaborative development. I enjoy turning complex requirements into robust architectures, from data modeling and API design to cloud infrastructure, monitoring, and user experience optimization.…Hi, I'm Hamdullah Mohamed Infas, a passionate full-stack software engineer currently based in Singapore. I specialize in building scalable web and mobile applications using React, Node.js, Java, and cloud services, delivering polished user interfaces and reliable APIs for startups and growing teams.\n\nI'm a strong believer in clean code, TDD, and collaborative development. I enjoy turning complex requirements into robust architectures, from data modeling and API design to cloud infrastructure, monitoring, and user experience optimization.

Available to hire

Hi, I’m Hamdullah Mohamed Infas, a passionate full-stack software engineer currently based in Singapore. I specialize in building scalable web and mobile applications using React, Node.js, Java, and cloud services, delivering polished user interfaces and reliable APIs for startups and growing teams.\n\nI’m a strong believer in clean code, TDD, and collaborative development. I enjoy turning complex requirements into robust architectures, from data modeling and API design to cloud infrastructure, monitoring, and user experience optimization.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Javanese

Advanced

English

Fluent

Work Experience

Senior Software Engineer at OPPTY

March 1, 2023 - Present

Led full-stack development of OppTy v1.0 with React/TypeScript frontend and Node.js/Express backend, implementing JWT authentication, RESTful APIs, Socket.io, MongoDB, Firebase, and SMTP integrations; introduced Java/Spring Boot services, Redis caching, RabbitMQ messaging, and microservices architecture. Built responsive front-end with lazy loading, SSR, and TailwindCSS; deployed on AWS EC2 and S3; developed cross-platform React Native app with Firebase authentication, push notifications, and Socket.io; integrated secure payment gateways and comprehensive testing using Jest.

Software Engineer at EXCELGAMES INTERACTIVE

February 1, 2022 - April 1, 2023

Backend development with Node.js/Express/NestJS, and Prisma ORM across MongoDB and MySQL; built RESTful APIs and microservices, integrated Java/Spring Boot, Redis caching, and RabbitMQ for asynchronous messaging. Created web and mobile apps with React.js, Next.js, and React Native Expo; leveraged NativeWind for responsive design, and BLE technology for real‑time hardware communication. Deployed on AWS EC2/S3; implemented JWT/OAuth security and Jest tests; collaborated with cross-functional teams using Postman, Chrome DevTools, Jira, and Git.

Full Stack Developer at GROUNDZERO HOLDINGS

December 1, 2019 - November 1, 2021

Built a comprehensive social media app with an integrated UK job board; developed web front-end with React.js/Redux and mobile with React Native; designed scalable backend with Node.js and MongoDB; deployed on AWS with EC2/S3 for reliability and scalability; focused on performance optimization and cross‑platform consistency.

Software Engineer Trainee at SLIIT

February 1, 2019 - August 1, 2019

Gained hands-on experience in full‑stack web development, contributed to frontend and backend projects, and produced functional prototypes. Gained proficiency in UI/UX design with Figma, wrote BRDs and user stories, and supported project teams with requirement analysis and documentation.