Fullstack Developer (ReactJS, NestJS, NodeJS)

Job description

Về vị trí này
ONSQUARE INC is a Korea-based Fintech and AI-based SaaS startup. It develops payment infrastructure and AI Agent-based user tools for the global market, operating with a distributed team structure across Korea, Canada, and Vietnam.

Trách nhiệm
Key Responsibilities

- Develop Fintech and AI Agent services (Korea-Canada based startup).
- Collaborate with the head office and HCMC branch to perform the following tasks:
- Develop in-house SaaS products.
- B2B workflow management tools (Immigration automation).
- Fintech payment platform (Remittance, Payment, KYC).
- AI Agent-based user tools.
- New feature development and maintenance of the above products.
- Front-end Development: Develop React and TypeScript-based web applications; Implement responsive UI and optimize UX; Real-time data streaming interfaces (AI Chat, Alerts, etc.).
- Back-end Development: Develop API servers based on Node.js and NestJS; Data modeling and caching using PostgreSQL and Redis; External API integration (Payment gateways, Auth, AI APIs, etc.).
- Quality & Collaboration: GitHub-based code reviews and PR collaboration; Issue management and Sprints via Linear; Deployment and operation in AWS environments; Asynchronous collaboration across Canada, Korea, and Vietnam time zones.

Your skills and experience

Qualifications

- 5+ years of experience in Full-stack web development.
- Professional experience in React and TypeScript front-end development.
- Professional experience in Node.js, NestJS, or similar back-end frameworks.
- Experience in data modeling and query optimization based on RDBMS like PostgreSQL.
- Experience in collaboration via Git and GitHub.
- Experience in deployment within AWS or similar cloud environments.
- Ability to read and write technical documentation in English.
- Currently residing in or willing to relocate to Ho Chi Minh City.

Yêu cầu
- Experience in developing Fintech, B2B SaaS, or AI products.
- Experience in integrating payment systems (Stripe, Airwallex, etc.).
- Experience in utilizing LLM APIs (OpenAI, Anthropic, etc.).
- Experience in real-time data processing (WebSocket, SSE).
- Understanding of Fintech security and regulations (KYC, AML).
- Proficient in English conversation.

Why you'll love working here

Quyền lợi
- Competitive compensation based on experience and skill set
- As required by Vietnamese labor law, full social insurance coverage applies for contracts of 1 month or longer
- Shared co-working space in District 7, HCMC