Full-Stack Software Engineer for AI Model Development
$50–$65/hr
Remote — US onlyContracttechnology
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Role Overview
Contribute to a GenAI engineering team that builds production software on top of frontier large language models. You will develop full-stack applications, integrate pre-release model APIs, and stress-test model-driven systems before they ship, working directly with the engineering manager to deliver working code quickly.
Key Responsibilities- Build and ship full-stack applications, services, and internal tools using Python, Java, Rust, C#, C++, or TypeScript that exercise model capabilities end to end.
- Integrate pre-release model APIs and build the surrounding scaffolding, including tool interfaces, evaluation harnesses, and telemetry.
- Diagnose, document, and communicate model and integration failure modes discovered while building, providing clear written feedback for the research team.
- Prototype rapidly against shifting requirements, delivering working increments with limited up-front specification.
- Collaborate with the engineering manager and other engineers to maintain code quality, consistent architecture, and technical documentation.
- At least 3 years of professional experience building and shipping production software at a recognized, top-tier organization.
- Production experience in at least one of Python, Java, Rust, C#, or C++, plus working proficiency in a second language from that list or TypeScript. This cohort is intentionally staffed across multiple language ecosystems.
- Hands-on experience across the stack: backend services and APIs, a modern front-end framework such as React or equivalent, relational or document databases, and cloud deployment.
- Proven ability to onboard onto an unfamiliar codebase and deliver working code quickly with minimal ramp-up.
- Demonstrable career progression, and strong written communication skills to explain complex technical decisions clearly.
- Ability to engage reliably for at least 40 hours per week during weekdays.
- Location: United States.
- Employment type: hourly, full-time commitment of 40 hours per week, weekdays.
- This is a W-2 employment position with Cincinnatus LLC, serving as the employer of record, with placement on a leading AI lab team as part of their extended workforce.
- Project and team assignments are coordinated to leverage language and technology strengths within the cohort.
- Pay rate: $50.00 to $65.00 per hour.
- Cincinnatus LLC will be the employer of record for this position, providing W-2 employment, payroll, benefits, and compliance while placing employees directly within client teams.
- The employer is an Equal Employment Opportunity employer, and does not discriminate on legally protected characteristics.
Once placed, you will onboard directly with the AI lab engineering manager on fast-moving projects. New engineers are expected to ramp quickly and contribute working code early in the engagement.