Fullstack Developer (B2B SaaS platform)

• Own architecture and development of core platform features end-to-end
• Build scalable full-stack applications using Next.js, Supabase, and TypeScript
• Design secure and maintainable database schemas, RLS policies, and permission systems
• Develop responsive, mobile-first UI using Tailwind CSS and shadcn/ui
• Implement billing, invoicing, and webhook flows with Stripe
• Build and maintain integrations with GCP services and supporting infrastructure
• Ensure audit trails, legal traceability, and data integrity across the platform
• Collaborate closely with product and design to turn evolving requirements into production-ready features
• Maintain high standards for code quality, performance, and security
• Work autonomously and take ownership from planning through deployment

Ways of Working

• Autonomous: Can pick up a PRD, ask the right questions, and move without being micromanaged
• Pragmatic: Knows when to build properly and when to ship something good enough for an MSP
• Communicates proactively: Flags blockers early and gives realistic estimates
• Takes ownership: Accountable for features end-to-end, not just task completion
• Comfortable with ambiguity: The PRD is actively evolving and you’ll be working in a discovery-to-build environment

• 7+ years of software engineering experience
• Strong TypeScript expertise across the full stack
• Experience with Next.js, App Router, Server Components, and Vercel
• Strong experience with Supabase/PostgreSQL
  • Schema design
  • RLS policies
  • Authentication
  • Realtime
  • Storage
• Experience building UI with Tailwind CSS and shadcn/ui
• Experience integrating Stripe subscriptions, invoicing, and webhooks
• Familiarity with Google Cloud Platform (GCP)
• Experience building responsive, mobile-first applications
• AI-native development workflow using tools like Claude, Codex, Cursor, or similar
• Strong communication skills and English fluency

Nice-to-Have

• Experience with multi-tenant SaaS architecture
• RBAC and tenant isolation implementation
• Document generation pipelines (contracts, PDFs, audit exports)
• Email and notification systems
• Experience building compliance-sensitive or workflow-heavy B2B platforms

Ideal Background

• Has built complex B2B SaaS products beyond simple CRUD applications
• Understands compliance-oriented systems where auditability and traceability matter
• Comfortable modelling systems with multiple user roles and permission layers
• Has shipped features independently from specification to production

Ways of Working

• Autonomous and proactive
• Pragmatic and product-minded
• Comfortable working in ambiguity
• Communicates clearly and flags blockers early
• Takes ownership of outcomes, not just implementation tasks

• Work Location: Flexible. This role is open to hybrid or fully remote arrangements for candidates from anywhere in Vietnam.
• An open mind and flat structure where every voice is welcome.
• A work environment built on transparency, seamless communication, trust, and a sensible approach, combined with mixed cultures and a speaking environment

Learn more about Xenia Tech