Senior Full-Stack Engineer

Job Details

Job Location:

USA Managed Care Organization Phoenix - PHOENIX, AZ 85020

Position Type:
Full Time Job Category:
Education Senior Full-Stack Engineer

Early-stage startup
· Hybrid — Phoenix
· Full-time ·

We're an early-stage startup building a multi-tenant SaaS platform for regulated and public-sector customers.

We're building a multi-tenant platform on Google Cloud, and we need a senior full-stack engineer who can own features end-to-end—from the React UI, through tenant-aware Fastify APIs, down to the Postgres data model—and who helps harden the foundations as we grow: tenant isolation, test coverage, and our CI/CD safety net. You'll join a small, high-ownership team where your architectural decisions stick.

Compliance is part of the landscape here (audit trails, access controls, regulated customers), so you'll build with that in mind—but this is a broad full-stack role, not a single-domain specialty.

• Build features end to end—Postgres schema and Prisma models, Fastify APIs, and the React UI that consumes them.
• Design and evolve ourmulti-tenantdata model and access controls (Postgres RLS, role-based permissions) with isolation we won t regret in two years.
• Use Zodand strong typing throughout to keep API contracts and runtime validation honest.
• Own features through to production on Google Cloud Run, including observability and debugging in a live environment.
• Raise the quality bar: grow automated test coverage (Vitest, Playwright) and wire quality gates into CI/CD.
• Review PRs, mentor, and help set technical direction as the team grows.
• Bring a modern approach to end-to-end testing.
• Be comfortable with AI-assisted development and help build out agents to increase team productivity.

• 6+ yearsbuilding production web applications full-stack, with meaningful time as a senior or staff engineer.
• Strong Type Scriptacross  both front end and back end—equally at home in a React component and a backend service.
• Solid React(hooks, modern patterns) with a fast build toolchain (Viteor equivalent).
• Server-side
  
  Node.jswith
  
  Fastify, Express, NestJS, or similar—API design and architecture.
• Strong
  
  PostgreSQL and data-modeling instincts, plus an ORM (Prismaideal) and migrations at scale.
• A feel for multi-tenant data isolation—row-level security, tenant-scoped access, the common footguns.
• Good judgment on trade-offs: schema-per-tenant vs. row-level isolation, build vs. buy, where to draw the line on abstractions.
• Comfort with Dockerfor local development.
• Clear communicator who writes things down.

• FedRAMPor equivalent regulated experience (FedRAMP Moderate/High, DoD IL4+, NIST 800-53)—and a working sense of what those controls mean for how you write code.
• PostgreSQLdepth—RLS and multi-tenant patterns.
• Multi-tenant identity depth—OIDC, SAML, SSO, MFA, session handling (helpful, not the focus of the role).
• Tailwind CSS, Tan Stack Query / React Query, Firebase / Google Identity Platformauth.
• Google Cloud(Cloud Run, Cloud Storage) and Git Lab CI/CD.
• Background in compliance, Gov Con, or other regulated/document-heavy domains.

Backend:
Type Script  
· Node.js 22
· Fastify
· Prisma
· PostgreSQL
· Zod
· Pino

Frontend:
React 18
· Type Script  
· Vite
· React Router
· React Query
· Tailwind CSS
· Axios

Infra:
Docker
· Git Lab CI
· Google Cloud Run
· Google Cloud Storage
· Nginx
· pnpm monorepo

Auth:
Firebase / Google Identity Platform
· session-based RBAC

Testing:
Vitest
· React Testing Library
· Playwright

• Competitive salary
• Health, dental, and vision insurance
• PTO and 401(k)
• A small team, real ownership, fast decisions
• Hybrid role based out of our Phoenix office

• 401(k)
• 401(k) matching
• Dental insurance
• Flexible spending account
• Health insurance
• Life insurance
• Paid time off
• Parental leave
• Retirement plan
• Vision insurance

Confidential (Required)

Hybrid remote in Phoenix, AZ 85020