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# Senior Fullstack Engineer (#f448) - New York, NY

- **Company:** NextDeavor, Inc.
- **Location:** New York, NY, United States
- **Experience:** Expert
- **Salary:** $180,000.0 - $220,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Code Review, Django Web Framework, Payment Systems, Python (Programming Language), Routing, Software Engineering, TypeScript, Network Routers, ReactJS, AI Coding Agents, Fastapi, Front End Software Development, Marketplace
- **Published:** October 12, 2026
- **Apply:** https://www.careerjet.com/job/us9fd83ed50e798760ad80baa1bd3ca640/eaa

## About the Role

* 7+ years of software engineering experience with a strong frontend focus
 * Deep expertise in React and TypeScript
 * Solid understanding of UI fundamentals: layout, performance, and state management
 * Hands-on experience with TanStack Router and TanStack Query (or strong opinions about routing/data fetching)
 * Ability to build and maintain Python/FastAPI endpoints and data models
 * Strong product instincts, attention to detail, and sound implementation judgment
 * Familiarity with coding agents and ability to articulate their strengths and limitations

Here's What Else Might Help You Out

 * Experience with payment flows, billing systems, or insurance-adjacent products
 * Familiarity with Zod and schema-driven API clients
 * Background in B2B SaaS or workflow-heavy products
 * Healthcare or dental industry experience

## Description

You will build and ship customer-facing experiences that drive the revenue cycle management (RCM) product while contributing to the Marketplace. You'll partner closely with product, business stakeholders, and other engineers to shape solutions and own features end-to-end. This is a Hybrid role (3 days onsite) based in New York.
Here's How You'll Make an Impact on the Team

 * Build fast, well-structured frontend experiences in React and TypeScript
 * Own features end-to-end, from component/state management through API integration and deployment
 * Contribute to backend APIs using Python and FastAPI
 * Collaborate with product and business stakeholders to translate requirements into usable interfaces
 * Participate in code reviews, architecture discussions, and engineering standards
 * Mentor other engineers and advocate for frontend quality across the team
 * Navigate two frontend contexts: a React/TypeScript SPA for the RCM product and a Django server-rendered Marketplace app with bundled JS