Senior Full-Stack Software Engineer

ZipStaff Inc.; Wayzata (MN); On-site; USD 152,000 - 207,000; Full time

Benefits offered by this job

Healthcare insurance

Dental insurance

Vision insurance

401(k)

Paid time off

Job summary

ZipStaff Inc. is seeking a Senior Full-Stack Software Engineer to deliver a GenAI-enabled platform upgrade. This on-site Las Vegas role focuses on C# back-end and React+TypeScript front end, integrating secure data pipelines and enterprise-grade LLM outputs.

The position requires 7+ years in software engineering, deep C# and React expertise, and hands-on GenAI experience within a secure enterprise environment. Contract (W2) through ZipStaff only.

Qualifications

• 7+ years professional software engineering; senior full-stack delivery.
• Strong C# back-end development.
• Strong React with TypeScript.
• Hands-on experience with generative AI / LLMs.
• Experience in secure enterprise data environments.
• On-site work requirement in Las Vegas, NV.
• Must be legally authorized to work in the United States without sponsorship.

Responsibilities

• Build scalable layers in C# and React/TypeScript.
• Ingest, validate, process, and return LLM outputs securely.
• Bridge enterprise data pipelines to GenAI prototypes.
• Operate across multiple staging environments in a secure data setting.
• Deliver rapidly within a prototyping team inside a mature enterprise.
• Collaborate as platform requirements evolve.

Skills

C# back-end development

React with TypeScript

GenAI / LLM experience

Senior full-stack delivery

On-site in Las Vegas, NV

US work authorization

7+ years software engineering

Job description

Job Title: Senior Full-Stack Software Engineer (C# / React / GenAI).
Location: Las Vegas, NV (On-site).
Employment Type: Contract (W2 through ZipStaff — No C2C or 1099).

About the Opportunity:

ZipStaff is seeking a Senior Full-Stack Software Engineer for the GenAI Discovery and Prototyping team at a global agriculture and food company.

You will deliver a platform upgrade that connects enterprise data pipelines, LLMs, and rapid application prototypes. This is a true full-stack delivery seat: C# on the back end, React + TypeScript on the front end, with secure ingest, validation, and return of LLM outputs in an enterprise environment.

What You’ll Do:

• Build scalable application layers in C# and React / TypeScript.
• Design software that securely ingests, validates, processes, and returns LLM outputs.
• Connect enterprise data pipelines to prototype and production-bound GenAI apps.
• Work across multiple staging environments in a secure data environment.
• Deliver rapidly in a prototyping team inside a mature enterprise.
• Collaborate as platform requirements change.

Required Qualifications:

• 7+ years professional software engineering; senior full-stack delivery.
• Strong C# back-end development.
• Strong React with TypeScript.
• Hands-on experience building applications powered by generative AI / LLMs.
• Treats LLMs as statistical tools—prompting plus engineering (validation, grounding, error handling), not demo-only chat UIs.
• Comfortable in secure enterprise data environments and multi-stage promotion.
• Ability to work on-site in Las Vegas, NV.
• Must be legally authorized to work in the United States without sponsorship now or in the future.

Preferred Qualifications:

• Enterprise data-pipeline integration.
• Experience taking GenAI prototypes toward reliable internal platforms.
• Fast iteration without dropping security or code quality.

Benefits:

• Healthcare insurance (employee-only).
• Dental insurance.
• Vision insurance.
• 401(k).
• Paid time off.

About ZipStaff:

ZipStaff partners with leading organizations to connect skilled technology professionals with high-impact contract opportunities. We focus on quality matches, clear communication, and long-term success for candidates and clients.