Thriveth

The AI job market, made clearer

Find work worth
your expertise.

Back to all jobs

Bilingual Croatian STEM Expert (PhD) — AI Safety

We're hiring PhD-level scientists who are proficient bilingual speakers (English & Croatian) to help make advanced AI models safer.

Remote
Hiring companyMercor
Application processN/ANo approved reviews yet
Work experienceN/ANo approved reviews yet

About the role

You'll apply your scientific expertise to evaluate and strengthen how these models handle specialized technical topics in Croatian. No prior AI/ML experience is required — we'll train you on the workflow.

Based in Croatia or the wider Eastern Europe region. This is a preference, not a requirement — applicants based elsewhere are welcome.

Project Timeline

Start date: Immediate.

Contract and Payment Terms

  • You will be engaged as an independent contractor.
  • This is a fully remote role that can be completed on your own schedule.
  • Projects can be extended, shortened, or concluded early depending on needs and performance.
  • Your work at Mercor will not involve access to confidential or proprietary information from any employer, client, or institution.

Responsibilities

  • Write expert-level prompts in Croatian 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.

Required skills

  • 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 Croatian, 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.

Preferred skills

  • 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.

Eligibility

Work arrangement: Fully remote

  • Please note: We are unable to support H1-B or STEM OPT candidates at this time.

Compensation details

  • Payments are weekly on Stripe or Wise based on services rendered.
More about the hiring companyMercor
Find AI-training work. Know what to expect.

Thriveth makes AI data-training work easier to find, understand, and navigate. We replace uncertainty with clear opportunities, realistic expectations, and insights from real application journeys.