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# Senior Full-Stack Engineer - C#/.NET + React/Next.js

- **Company:** Arc Full-time
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $80,000.0 - $120,000.0
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Artificial Intelligence, Microsoft Azure, C Sharp (Programming Language), Software as a Service, Cloud Storage, PostgreSQL, OAuth, Next.js, TypeScript, ReactJS, Backend, Stripe, Integration Frameworks, Front End Software Development, Restful APIs, Webhooks
- **Published:** August 9, 2026
- **Apply:** https://arc.dev/signup?userType=developer&publicRandomKey=paer1xz0g5&to=https%3A%2F%2Farc.dev%2Fdashboard%2Fd%2Fverified-jobs%2Fpaer1xz0g5%2Fapplication

## About the Role

We're looking for someone with strong C#/.NET experience who is also comfortable working across the frontend. You should be capable of taking a feature or problem, understanding the requirements, designing the solution, and shipping it with minimal hand-holding.

Excellent spoken and written English is required. Experience working directly with U.S.-based SaaS or startup teams is strongly preferred.

We value engineers who are autonomous, move quickly, communicate well, take ownership, and enjoy working in a small startup environment.

## Description

We're a growing U.S.-based SaaS company looking for a strong full-stack engineer to join our engineering team full-time. You'll work directly with the CTO/co-founder and own meaningful parts of the product from concept through production.
ⓘ View potential timezone restrictions

This is a 40-hour-per-week, long-term position, and you must be available to work full U.S. Central/Chicago business hours (approximately 9 AM-5 PM CT). Partial timezone overlap is not enough.

Our stack includes:

 * C# / .NET backend services
 * Next.js, React, and TypeScript
 * PostgreSQL
 * Azure and cloud storage
 * REST APIs, OAuth, webhooks, and third-party integrations
 * Stripe
 * AI/LLM-powered features


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