Full-Stack Engineer (Backend)

Role OverviewWe're building a greenfield web platform that delivers modern, cloud-based experiences aligned with Sensei Cloud. The application is modular in nature and will grow over time.As a Full-Stack Engineer with a backend focus, you will be a core contributor shaping the Rails API, data layer, and Azure platform integrations from the ground up — while remaining capable of working across the entire stack when needed. Your primary ownership area is the backend: data modeling, API design, data mapping across dental practice management systems (DPMS), external healthcare system integrations, and background processing. You will interact with Azure Cosmos DB for DPMS data and leverage Azure PostgreSQL Hyperscale (Citus) to host application data at scale. You will also contribute to frontend work as the team and product evolve.This is a full-product ownership role in a HIPAA-regulated healthcare environment, requiring strong technical judgment, attention to compliance, and close collaboration with your fellow engineers and product stakeholders.You will work within a Human -> AI -> Human engineering workflow, using AI tools to accelerate delivery while maintaining full accountability for correctness, security, and compliance.

Key Responsibilities

• FrontendDesign, build, and maintain React components for a dental practice scheduling application
• Integrate frontend features with a Rails-based API using Axios and TanStack Query for data fetching, caching, and mutations
• Implement Azure AD B2C authentication using MSAL, including protected routes, token acquisition, and Axios interceptors
• Maintain clean, readable TypeScript code that conforms to ESLint and Prettier standards
• BackendDesign, build, and maintain Rails API endpoints (API-only mode) serving dental scheduling, patient, and practice data to the React frontend
• Model and evolve PostgreSQL schemas using ActiveRecord migrations with an emphasis on clarity, performance, and data integrity
• Build and operate background jobs using Sidekiq and Redis for asynchronous and long-running tasks
• Write and maintain RSpec test suites using FactoryBot, WebMock, and VCR for external HTTP integration testing
• Run and remediate findings from Brakeman and bundler-audit as part of normal development workflows
• SharedCollaborate closely with fellow engineers and product stakeholders throughout feature development
• Participate in AI-augmented development workflows, reviewing and validating AI-generated code against acceptance criteria
• Follow Git best practices: feature branches, pull requests for all changes, and conventional commit messages
• Proactively update documentation when behavior or architecture changes