Full Stack AI Engineer

About the job

Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey .

Position: Senior Software Engineer, Full Stack (Python, Java, Rust, C#, C++)

Type: Contract

Compensation: $90–$110/hour

Location: Remote

Commitment: 40 hours/week

Role Responsibilities

• Build and ship full-stack applications, services, and internal tools in Python , Java , Rust , C# , C++ , or TypeScript that exercise frontier model capabilities end to end.
• Integrate pre-release model APIs into working software, including tool interfaces, evaluation harnesses, and telemetry.
• Diagnose and document model and integration failure modes, translating engineering observations into clear written feedback for the research team.
• Prototype quickly against shifting requirements, delivering working increments with limited up-front specification.
• Collaborate with the engineering manager and other engineers to maintain consistency in code quality, architecture, and technical documentation.
• Work independently and asynchronously to meet deadlines while improving AI model performance.

Qualifications

Must-Have

• 6+ years of dedicated professional experience building and shipping production software at a recognized, top-tier organization.
• Deep production experience in at least one of Python , Java , Rust , C# , or C++ , plus demonstrated delivery in a second language across a different ecosystem.
• Hands-on ownership across the stack: backend service and API design, a modern front-end framework ( React or equivalent), data modelling, and cloud deployment and operations.
• Demonstrated ability to onboard onto an unfamiliar codebase and deliver working code quickly with minimal ramp-up.
• Strong written communication skills and the ability to explain complex technical decisions clearly.
• Ability to engage reliably for at least 40 hours/week during weekdays.

Compensation & Legal

• W-2 employment with Cincinnatus LLC.
• Paid weekly via payroll.

Application Process (Takes 20–30 mins to complete)

• Upload resume
• AI interview based on your resume
• Submit form

Resources & Support

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