Remote Bilingual Spanish STEM Expert; Physics, Biology, or Chemistry - AI Trainer -per

Mercor is seeking a Bilingual Spanish STEM Expert who is native to the United States (Spanish‑speaking), Spain, Chile, or Mexico, with experience in biology / physics / chemistry theory and problem‑solving, to develop and refine high-quality reasoning questions that evaluate AI models.

Your expertise in biology / physics / chemistry will ensure the scientific accuracy, rigor, and instructional quality of these assessment items. You will create and evaluate Spanish / English prompts and responses, ensuring scientific precision while maintaining clear, natural Spanish phrasing consistent with academic conventions in the United States (Spanish‑speaking), Spain, Chile, or Mexico, and alignment with English where needed.

Create detailed prompts in Spanish and / or English with multiple constraints and scientifically accurate instructions.

Establish high‑level expectations for correct responses in STEM contexts, and develop comprehensive rubrics that account for scientific rigor and—when written in Spanish—linguistic clarity, regionally appropriate terminology (United States [Spanish‑speaking], Spain, Chile, or Mexico usage), and academic tone.

Run prompts through AI models and assess preliminary outputs against expectations for scientific accuracy, reasoning quality, and clarity. Compare Spanish and English responses where needed.

Collaborate in QA review processes to ensure prompt tasks and rubrics meet scientific standards. Maintain consistency and reliability across Spanish‑language benchmarks prior to integration into official evaluation sets.

• Native‑level fluency in Spanish (written), specifically native to the United States (Spanish‑speaking), Spain, Chile, or Mexico
• Strong reading and writing proficiency in English
• BS or BA in Biology / Physics / Chemistry
• Familiarity with undergraduate‑level biology / physics / chemistry topics
• Strong writing and critical thinking skills
• Ability to work independently and meet deadlines

• 2+ years of experience in teaching, research, or an applied STEM discipline field
• Experience working with Spanish‑language STEM curricula or academic standards in the United States, Spain, Chile, or Mexico

• Complete a short AI‑led interview (approximately 15 minutes)
• If approved, complete a paid assessment focused on writing and rubric creation
• Then, if selected, you will be invited to work on the project.

• Expected commitment :
  Minimum 20 hours per week
• Expected duration :
  Approximately 3–6 months
• Work environment :
  Structured project setting with clear goals and tools