Senior Full-Stack Engineer - Multi-Tenant SaaS (React/TS)

USA Managed Care Organization; Phoenix (AZ); Hybrid; USD 150,000 - 210,000; Full time

Benefits offered by this job

Competitive salary

Health insurance

PTO/401(k)

Hybrid Phoenix office

Job summary

USA Managed Care Organization, Phoenix-based startup, seeks a Senior Full-Stack Engineer to own end-to-end features across React UI, Fastify APIs, and PostgreSQL Prisma data models in a multi-tenant cloud platform.

You’ll work on Google Cloud Run, implement tenant isolation, tests with Vitest/Playwright, and CI/CD gates, mentoring a small team and shaping technical direction in a hybrid Phoenix office.

Qualifications

• 6+ years building production web applications full-stack as a senior or staff engineer.
• Strong TypeScript across front end and back end, React focus.
• Server-side Node.js with Fastify/Express/NestJS, API design.
• Solid PostgreSQL data-modeling instincts; Prisma ideal.
• Experience with multi-tenant data isolation and RBAC.
• Comfort with Docker and modern tooling; strong communication.

Responsibilities

• Build features end to end: Postgres schema, Prisma models, Fastify APIs, and React UI.
• Design and evolve tenant-aware data model with isolation.
• Use Zod and strong typing to enforce API contracts.
• Own features through production on Google Cloud Run; ensure observability.
• Increase test coverage with Vitest and Playwright; integrate CI/CD gates.
• Review PRs, mentor teammates, and help set technical direction.

Skills

TypeScript

React

Node.js

PostgreSQL

Prisma

Multi-tenant isolation

Docker

Clear communication

Vite

React Router

Tools

Vite

TanStack Query

Tailwind CSS

GitLab CI/CD

Job description

USA Managed Care Organization, Phoenix-based startup, seeks a Senior Full-Stack Engineer to own end-to-end features across React UI, Fastify APIs, and PostgreSQL Prisma data models in a multi-tenant cloud platform.

You’ll work on Google Cloud Run, implement tenant isolation, tests with Vitest/Playwright, and CI/CD gates, mentoring a small team and shaping technical direction in a hybrid Phoenix office.