Business Operations Expert - Evaluator

Mercor; Greater London; On-site; GBP 480 - 960; Full time

Job summary

Mercor is conducting a focused, one-time evaluation pilot to assess how frontier AI models perform on realistic professional work. We are hiring 50 experts across HR and Accounting domains.

Each participant completes one task and evaluates five model attempts, then provides structured feedback on both the task and study design. Participants will sign an NDA before receiving materials and must have 5+ years hands-on experience in HR or Accounting, with the ability to judge work like a working

Qualifications

• 5+ years of hands-on professional experience in HR or Accounting.
• Ability to judge work with evidence-based rationales.
• Reliability within a short turnaround window.
• Follows NDA and study protocols.

Responsibilities

• Solve one domain-specific task using provided source files.
• Rank five model outputs 1–5 with no ties and score 0–100.
• Provide evidence-based rationales citing specific outputs.
• Give structured feedback on the task and the study design.

Skills

HR experience

Accounting experience

Job description

Role Overview

Mercor is running a short, structured evaluation pilot to measure how frontier AI models perform on realistic professional work — and how experienced practitioners judge that work. We are hiring 50 experts across two business domains. Each expert completes one task, then evaluates five model attempts at that same task. This is a one-time study, not ongoing production work.

What You’ll Do

• Sign an NDA before receiving any materials.

• Solve one realistic, domain-specific task using the source files provided.

• Review five model-generated outputs for that task. Rank them 1–5 with no ties, score each 0–100, and write evidence-based rationales that cite specific parts of the output.

• Provide structured feedback on the task itself and on the study design.

Time Commitment

Estimated 8-12 hours.

Study Conditions

• No rubric and no golden answer are provided. Your professional judgment is the measurement.

• Use of LLMs or other AI assistants is prohibited at every stage — solving, ranking, scoring, and writing rationales.

Domains we are focused on

• Human Resources

• Accounting

Who We're Looking For

• 5+ years of hands‑on professional experience in one of the two domains above.

• Currently or recently practicing, so you can judge the work the way a working professional would.

• Able to write a clear, specific, evidence‑grounded rationale for a judgment.

• Reliable within a short turnaround window.

Eligibility Restriction

You are not eligible for this pilot if you have worked on Project Alchemy in any capacity — task author, reviewer, world expert, or anyone who has had access to its source world data. Prior exposure to that material would invalidate the study.