Fixed Income Research Expert (AI Training & Evaluation)

A leading AI lab is expanding its roster of expert contributors, and Braintrust is helping identify experienced fixed income research professionals to support the development and evaluation of its advanced AI systems. This is a remote, flexible, freelance engagement where you apply your professional expertise to help make AI more accurate and reliable on complex financial topics.

In this role you will create technical, domain-specific prompts and review AI-generated responses end to end — the final output, the underlying reasoning, and the steps taken to get there — researching and verifying their accuracy against reliable sources and providing clear, expert-level feedback. Your judgment helps define what a correct, complete, and well-reasoned answer looks like in fixed income research. It is an opportunity to contribute to frontier AI work while leveraging deep domain experience, on a schedule that fits alongside your existing commitments.

Responsibilities:

• Create and refine technical, domain-specific prompts that probe and stress-test the AI's capabilities in fixed income.
• Evaluate AI-generated responses end to end — the final output, the underlying reasoning, and the intermediate steps — for accuracy, completeness, and quality.
• Research and verify technical details, figures, and claims against authoritative sources.
• Identify errors, gaps, edge cases, and inconsistencies in AI outputs, and clearly explain what is wrong and why.
• Apply detailed project guidelines consistently, and flag ambiguity or areas where guidance could improve.
• Provide expert written feedback that improves how AI systems reason about fixed income.
• Maintain a high standard of accuracy and consistency across all assigned work.

Requirements:

• 8+ years of professional experience in fixed income research (credit research, rates, bond/portfolio analysis, or securitized products).
• Deep, demonstrable specialization in the above.
• Strong written English and the ability to explain complex reasoning clearly.
• Excellent attention to detail and sound analytical judgment.
• Comfortable working independently in a remote environment.
• Based in the United States.
• Availability for approximately 4 hours per day, ~5 days per week including weekends, for a short-term engagement.

Preferred:

• Prior experience reviewing, evaluating, or quality-checking content, data, or AI/model outputs.
• Familiarity with AI or machine learning projects.