1D AGO

Mechanical Engineer

Mercor / Mechanical Engineer

RATE

$60-$90/HR

LOCATION

UNITED STATES

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DESCRIPTION

Join a leading AI lab's cutting-edge GenAI team to be at the core of the AI revolution, where your expertise fuels the development of the most advanced AI models. We are hiring experienced mechanical engineers to work directly with a leading AI lab's research and program management teams, improving how frontier AI models reason about real mechanical engineering work. Your engineering judgment is the substance of this role. You will review the quality of mechanical engineering tasks and model outputs, write the instruction specs and reference solutions that define what "correct" looks like, and help build the evaluations that show whether the model is genuinely improving. We are looking for practicing engineers who have owned real designs, analyses, or systems in industry, not generalists. This is a W-2 employment position with Cincinnatus LLC, with the opportunity to be placed at a leading AI lab as part of their extended workforce. The initial engagement is 2 to 3 months, with a strong possibility of extension based on performance and project needs. You will be provisioned with client-issued accounts and equipment, and will work inside the client's own tools alongside their research teams. Location: Remote, within the United States. Key Responsibilities Data QA and reviews: Vet the quality of mechanical engineering tasks and model outputs, spotting incorrect assumptions, missing constraints, unit and tolerance errors, unsafe design choices, and answers that read well but would not pass a design review. Instruction specs and reference solutions: Write clear instruction specs, produce worked reference solutions to mechanical engineering problems, and define new tasks that reflect how engineering work is actually done in practice. Benchmarks and domain depth: Design challenging tasks and evaluation sets across areas such as mechanical design, thermal and fluid systems, structural and stress analysis, manufacturing, and controls, and help build domain-specific tools together with the research team. Calibration: Work with client researchers and specialists in adjacent fields to keep standards consistent, translating tacit engineering judgment into explicit, teachable criteria. 3. Core

REQUIREMENTS

▸Education: Bachelor's degree or higher in Mechanical Engineering or a closely related engineering discipline.
▸Seniority: Clear progression toward senior or lead engineering responsibility. A Professional Engineer (PE) license is a plus but not required.
▸AI fluency: Hands-on working use of large language models in your professional work, and the judgment to tell a well-reasoned answer from a plausible-sounding wrong one.
▸Availability: Able to commit reliably to 40 hours per week for an initial engagement of 2 to 3 months, with a strong possibility of extension.
▸Excellent written communication, and the ability to give precise, well-structured written feedback.
▸About Cincinnatus LLC
▸Equal Employment Opportunity
▸Cincinnatus is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans throughout the job application process.