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

Arc Full-time

United States

2 days ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

5 years minimum

Compensation

$80,000.0 - $120,000.0

Working hours

Regular working hours

Languages

English

Job source

arc.dev

Tech stack

.NET Framework Artificial Intelligence Microsoft Azure C Sharp (Programming Language) Software as a Service Cloud Storage PostgreSQL OAuth Next.js TypeScript ReactJS Backend

+5 more

Stripe Integration Frameworks Front End Software Development Restful APIs Webhooks

Job 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

Requirements

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.