Available to hire
I’m Le Tan Sang, a passionate full-stack developer specializing in React, TypeScript, Node.js, and Go. I enjoy turning complex requirements into clean, scalable software and delivering value quickly through well-architected systems.
My focus areas include microservices, multi-tenant SaaS platforms, real-time features, and AI-augmented workflows to accelerate delivery. I thrive in collaborative Agile environments and love crafting maintainable code and thoughtful system designs.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Advanced
Work Experience
Fullstack Developer at Skillspar — IT Security & Practical Training Platform
May 1, 2021 - PresentBuilt a proactive security awareness training platform with interactive modules, real-time quizzes, hands-on simulated labs, and phishing simulations. Led frontend development with React and TypeScript (Redux, React Query) and developed backend microservices in Go, handling REST endpoints, business logic, and inter-service communication. Implemented real-time features using WebSocket and designed a multi-tenant architecture to support configurable client workflows. Containerized services with Docker (multi-stage builds) and integrated GitLab CI/CD for automated testing and deployment. Contributed to an AI-powered MR review tool using Claude to improve feedback quality.
Fullstack Developer at Skillspar
May 1, 2021 - PresentDeveloped a proactive security awareness training platform that educates users through interactive modules, assesses knowledge with real-time quizzes, and reinforces learning via hands-on simulated labs and phishing simulations. Tech stack includes ReactJS, WebSocket, React-Query, Redux, Material-UI, TailwindCSS, and other third-party libraries. Team size: 8.
Frontend Developer at Foxnite — IoT Management Platform
January 1, 2020 - April 1, 2021Built a web application to visualize real-time data from IoT devices with interactive dashboards. Developed user and device management interfaces with role-based access control. Integrated frontend with IoT backend services via REST APIs.
Frontend Developer at Foxnite
January 1, 2020 - April 1, 2021Built a web application to display data from IoT devices and manage devices and users. Utilized ReactJS, Redux, and Material-UI with additional third-party libraries.
Web Developer at Foxnite
February 4, 2019 - February 27, 2020Education
Web Development at Cybersoft Academy
January 1, 2019 - January 1, 2019 at HCM University of Technology and Education
January 1, 2018 - January 1, 2019 at Post and Telecommunications Institute of Technology
December 1, 2024 - February 28, 2026Information Technology at Post and Telecommunication Institute of Technology (PTIT)
December 1, 2024 - April 7, 2026Web Development at Cybersoft Academy
January 1, 2019 - January 1, 2019Information Technology at HCM University of Technology and Education
January 1, 2018 - January 1, 2019Information Technology at Post and Telecommunication Institute of Technology (PTIT)
December 1, 2024 - April 22, 2026Web Development at Cybersoft Academy
January 1, 2019 - January 1, 2019 at HCM University of Technology and Education
January 1, 2018 - January 1, 2019Qualifications
Industry Experience
Software & Internet, Education, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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