VN Technology Senior Fullstack Engineer

Role Overview

We are looking for a Sr Fullstack Engineer to drive the development of the CADDi SaaS Platform. In this role, you will build and scale a high-performance web application that handles complex business logic and user interactions. You will work across the full stack, from designing DB, APIs with domain-driven design principles to optimizing frontend performance, using modern web technologies and architectural patterns.

What You Will Do (Key Responsibilities)

• End-to-end design, develop & maintenance CADDi SaaS product, ensuring high availability and low latency.
• Work with modern TypeScript stack (NestJS, Next.js…) in a complex web application.
• Build and maintain GraphQL APIs following domain-driven design principles and schema-first approach.
• Collaborate with cross-functional international teams to validate, implement & delivery features.
• Participate in code reviews and maintain high code quality standards.
• Hand-ons in product operation such as on-call, incident response & troubleshooting.
• Write high-quality technical documentation (eg. ADR, Design Docs, Runbook) and actively participate in architectural decisions.

Requirements

MUST HAVE

• 7+ years of experience in web application development.
• Proficiency in statically typed programming la