# Postdoctoral Research Scientist – STEM (Remote |…

> Source: https://confidential.careers/job-detail/postdoctoral-research-scientist-stem-remote-65-100-hr-synthires-s-o-paulo

# Postdoctoral Research Scientist – STEM (Remote | $65–$100/hr)

Synthires 

** São Paulo, Brazil ** Full Time ** Human Resources Jobs ** New

[Apply Now](https://confidential.careers/go/15107659) ** Save 

## Job Description

**STEM PhD Expert**

**Location:** Remote

**Engagement Type:** Hourly Contract

**Compensation:** **$70–$75/hour**

**About the Opportunity**

This opportunity is for **STEM PhD experts** interested in contributing to advanced AI research and evaluation projects involving state-of-the-art large language models (LLMs).

The role involves applying deep subject matter expertise to develop challenging, domain-specific problems and create high-quality data that helps improve the reasoning, accuracy, and problem-solving capabilities of next-generation AI systems.

**Required Qualifications**

- PhD in a STEM discipline from a university in the United States, United Kingdom, Canada, or Europe.
- Expertise in a relevant field, including:
- Mathematics
- Biology
- Chemistry
- Physics
- Computer Science
- Statistics
- Economics
- Or a closely related STEM discipline
- Deep subject matter expertise with the ability to develop complex, research-level problems within your domain.
- Strong analytical and critical-thinking skills.
- Exceptional attention to detail and commitment to technical accuracy.
- Excellent written and verbal communication skills.
- Excellent proficiency in English.
- Ability to work independently in a remote environment.

**Responsibilities**

- Develop challenging, domain-specific problems based on your area of expertise.
- Create high-quality reference solutions and explanations.
- Review and evaluate AI-generated responses for accuracy, reasoning, and technical quality.
- Identify errors and opportunities to improve AI-generated outputs.
- Apply advanced subject matter expertise to help improve the reasoning capabilities of large language models.
- Contribute high-quality data to support the development and evaluation of next-generation AI systems.

**Compensation**

- Competitive compensation of $70 –$75/hour.
- Weekly payments.
- Independent contractor engagement.

**Application Process**

- Upload Resume
- Complete a 20–30 Minute AI Interview Based on Your Resume and Expertise
- Submit Application

Posted August 22, 2026