Senior Full-Stack Engineer (C#/.NET + React/Next.js) – NA/LATAM
We're a growing U.S.-based SaaS company looking for a strong full-stack engineer to join our team full-time. You'll work directly with the CTO/co-founder and own meaningful parts of the product from concept to production. This is a 40-hour-per-week, long-term (contract-to-hire) position requiring full US Central/Chicago business hours overlap (9am-5pm CT).
Responsibilities
- - Own features end-to-end: C#/.NET backend services and Next.js/React/TypeScript frontend
- - Build and maintain REST APIs, OAuth, webhooks, and third-party integrations (Stripe, AI/LLM features)
- - Manage PostgreSQL data layer and Azure cloud infrastructure
- - Work directly with the CTO/co-founder from concept through production
Benefits & Perks
Requirements
- - Strong C#/.NET experience, comfortable across the frontend too
- - Proficiency with Next.js, React, TypeScript, PostgreSQL, Azure
- - Excellent spoken and written English
- - Experience working directly with U.S.-based SaaS or startup teams strongly preferred
- - Autonomous, fast-moving, takes ownership, enjoys small startup environments
About US SaaS Company (via Arc)
A growing U.S.-based SaaS company looking for a strong full-stack engineer to join full-time. You'll work directly with the CTO/co-founder and own meaningful parts of the product from concept through production. Stack: C#/.NET backend, Next.js/React/TypeScript, PostgreSQL, Azure, Stripe, AI/LLM-powered features.
Industry
SaaS
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