Biology PhD Expert - AI Trainer

Obsidian; Riyad Al Khabra; On-site; SAR 180,000 - 240,000; Full time

Job summary

Obsidian is seeking PhD-level scientists fluent in Arabic and proficient in English to help improve AI model safety for specialized scientific content in Arabic. No prior AI/ML experience is required as training will be provided.

You will craft expert prompts in Arabic, evaluate model responses for accuracy and safety, and apply standardized guidelines to classify prompts and conversations within the project timeline starting immediately.

Qualifications

• PhD-level scientist with depth to write prompts across chemical, biological, radiological and nuclear topics.
• Native or near-native Arabic fluency with business-level English writing.
• Familiarity with modern lab and computational techniques in the subfield.
• Judgment on scientific safety and responsible handling of dual-use information.

Responsibilities

• Write expert-level prompts in Arabic for specialized scientific topics.
• Evaluate and annotate model responses for accuracy, usefulness, and safety.
• Apply structured guidelines to classify prompts and conversations.

Skills

Prompt writing in Arabic

Model evaluation

Guideline application

Education

PhD in chemistry/biology or related field

Job description

About the role

We're hiring PhD-level scientists who are proficient bilingual speakers (English & Arabic) to help make advanced AI models safer. You'll apply your scientific expertise to evaluate and strengthen how these models handle specialized technical topics in Arabic. No prior AI/ML experience is required — we'll train you on the workflow.

What you'll do

• Write expert-level prompts in Arabic across specialized scientific topics.
• Evaluate and annotate model responses for scientific accuracy, helpfulness, and appropriate handling of sensitive content.
• Apply structured guidelines to classify prompts and conversations.

What we're looking for

• A PhD in chemistry, biology, or a closely related field — ongoing or completed — with the depth to write prompts across chemical, biological, or radiological and nuclear subject areas.
• Native or near-native fluency in Arabic, plus business-level written English.
• Deep familiarity with modern laboratory and computational techniques in your subfield.
• Sound judgment around scientific safety and the responsible handling of dual-use information.

Nice to have

• Based in Saudi Arabia or the wider MENA region. This is a preference, not a requirement — applicants based elsewhere are welcome.
• Radiological and nuclear coverage from a chemistry background is welcome — radiochemistry, nuclear chemistry, energetic materials, or radiation physics all qualify.
• Demonstrated depth in a specific subfield rather than broad coverage — for example organic or inorganic synthesis, molecular biology, microbiology, virology, or genetics.
• Research or coursework touching on chemical safety and security, biosafety and biosecurity, or hazardous-materials handling.
• Experience reviewing, grading, or red-teaming technical content.

Project Timeline

• Start date: Immediate