SeatOS is on a mission to transform and digitize the ground & sea transportation industry. Part of Travelier Group, SeatOS is a fast-growing B2B start-up building the digital infrastructure that enables operators to modernize their operations, connect to global distribution, and scale their businesses. Scaling fast across markets such as Thailand, Indonesia and the Philippines; our platform powers millions of trips annually and processes 10s of millions in GMV. Now, we’re entering our next phase of growth.

We’re looking for a skilled Full-Stack Developer who can build and maintain high-performance web applications using modern JavaScript frameworks. You’ll work across both frontend and backend systems — implementing scalable features, designing robust APIs, and ensuring seamless user experiences.

Key Responsibilities

• Develop and maintain scalable web applications using React on the frontend and Node.js (Express/Nest.js) on the backend.
• Design and implement RESTful APIs and integrate third-party services.
• Write clean, maintainable, and testable code using modern best practices.
• Collaborate closely with designers, product managers, and other developers to deliver end-to-end solutions.
• Work with both relational and NoSQL databases (e.g., PostgreSQL/MySQL, MongoDB, Redis).
• Optimize performance, security, and scalability across all application layers.
• Participate in code reviews, technical discussions, and architectural design.