Remote AI training and data labeling jobs

Croatian-speaking PhD chemists and biologists write specialised science prompts in Croatian and evaluate how AI models answer, including how they handle dual-use questions. Part-time remote at $48–52/hour, $10 above the Croatian generalist role. Eastern Europe preferred, not required; 9 hires this month.

Author or verify expert multiple-choice biology questions (one correct answer, nine subtle distractors, chain-of-thought solution, references) for an AI benchmark in pharma manufacturing, synthetic biology, drug discovery and agricultural, environmental and food biology. PhD or candidate preferred. $60–75/hour, 10+ hours a week.

Quantum and computational chemistry PhDs write original, runnable research problems for a scientific-computing AI benchmark, with grading criteria, calibrated until frontier models fail them more often than they pass. 6 weeks at 20+ hours a week, Git and Docker workflow. Flat $70/hour; 182 hired this month.

Hands-on preclinical scientists from companies that develop their own drugs annotate R&D data and model outputs, and advise an AI lab building foundation models for drug discovery. Any modality, 5+ years industry R&D, about 10 hours a week. $60–100/hour.

Preclinical scientists with direct antibody-drug conjugate or bispecific antibody experience annotate R&D data and advise an AI lab building drug discovery foundation models. In-house asset developers only, 5+ years industry R&D, about 10 hours a week. $60–100/hour.

Belgium-based PhD chemists and biologists who write Belgian Dutch: author specialised science prompts and grade how AI models handle accuracy and dual-use safety. Belgium residence required. Part-time remote at $61–65/hour, $13 above the Belgian Dutch generalist role; 9 hires this month.

Red-team frontier AI models from the chemical defence side: write benign, dual-use and adversarial prompts drawn from countermeasures, protection and detection work, judge how models respond against a policy standard, and write the reference answers. Remote contract at $65–75 per task.

Korean-speaking PhD chemists and biologists write specialised science prompts in Korean and grade AI answers for accuracy and dual-use safety. Part-time remote at $63–67/hour, $15 above the Korean generalist role and third-highest in the series. East Asia preferred, not required.

Hindi-speaking PhD chemists and biologists write specialised science prompts in Hindi and grade AI answers for accuracy and safe handling of dual-use topics. Part-time remote at $23–27/hour; India or South Asia preferred, not required. 12 hires this month, among the busiest in the series.

Portuguese-speaking PhD chemists and biologists write specialised science prompts in Portuguese and grade how AI models handle accuracy and dual-use safety. Part-time remote at $50–54/hour; Portugal or Western Europe preferred, not required. PhD candidates eligible; 9 hires this month.

Arabic-speaking PhD chemists and biologists write specialised science prompts in Arabic and grade AI answers for accuracy and dual-use safety. Part-time remote at $38–42/hour; Saudi Arabia or MENA preferred, not required. 13 hires this month, the most active listing in the series.

Umbrella listing for Mercor's energetic materials red-team panel: chemists and engineers or operators write benign, dual-use and adversarial prompts, judge frontier AI replies against a policy standard, and write reference answers. Remote contract at $65–75 per task; 16 hired this month.

Write or verify 10-option multiple-choice benchmark questions in applied maths (signal processing, actuarial science, optimization, climate modeling and more), with chain-of-thought solutions and references. For maths PhDs and doctoral candidates. Remote, 10+ hours a week, $61–77/hour.

Author executable scientific-computing problems in ecology, biochemistry and genetics for Sci Code, a new AI benchmark: source a paper, dataset or repo, write the prompt and grading criteria, and keep it only if frontier models mostly fail. PhD plus Python or R, Git and Docker. 6 weeks, 20+ hours a week, $70/hour.

Red-team frontier AI models on chemical misuse: write benign, dual-use and adversarial prompts from forensic casework, judge the model's answers against a policy standard, and write reference answers. Remote contract at $65–75 per task.

The UK posting of Mercor's molecular biology project: design primers, plasmids, gRNAs, mRNA constructs and repair templates as ground truth for a frontier model, and write the rubrics that judge them. PhD strongly preferred, first-author record expected, 20 hours a week. $70–105/hour.

Design the primers, plasmids, gRNAs, mRNA constructs and repair templates that become ground truth for a frontier model, and write the rubrics that judge sequence design quality. PhD strongly preferred, first-author record expected, 20 hours a week minimum. US only, $70–105/hour.