This range is provided by Rex.zone. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.
Base pay range
$30.00/hr - $50.00/hr
AI Research Jobs in the United States (Remote, Full-Time)
You will run applied AI research projects for US-based customers via Rex.zone, translating open-ended research questions into measurable experiments across LLM evaluation, RLHF data design, prompt evaluation, and model performance improvement.
What You Will Do
Own end-to-end applied research cycles: problem framing, baselines, ablations, and reporting
Build and evaluate LLM systems using offline metrics and human-in-the-loop evaluation
Design RLHF workflows: preference data specs, rater instructions, prompt sets, and rubric-based grading
Create evaluation datasets and test suites: prompt evaluation, red-teaming prompts, and content safety labeling protocols
Collaborate with data labeling teams on taxonomy, edge-case coverage, and training data quality
Perform error analysis and model debugging to improve robustness, safety, and helpfulness
Document methodology and results for reproducibility and auditability
Required Qualifications
Mid-Senior experience delivering applied ML research or productionized ML evaluation
Strong Python skills; experience with PyTorch (or similar)
Hands-on LLM evaluation, prompt evaluation, or RLHF experience
Experiment design, metrics selection, and statistically sound interpretation
Familiarity with dataset development: data labeling, QA evaluation, and guideline compliance checks
Strong written communication for research artifacts and cross-functional alignment
Preferred Qualifications
RAG/NER/structured output evaluation experience
Exposure to computer vision or multimodal evaluation
Content safety labeling taxonomies and policy-aligned rubrics
MLOps for evaluation pipelines, dataset versioning, and reproducible runs
Remote Work and Collaboration
Remote, FULL_TIME role supporting United States-based projects with distributed teams across research, engineering, and data operations.
Compensation
Hourly base pay range: $30–$50/hr.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Engineering and Information Technology
Industries
Technology, Information and Internet
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