Brand Strategist & AI Performance Evaluator

Obsidian; Greater London; Remote; GBP 65,000 - 95,000; Full time

Job summary

Mercor is seeking experienced marketing professionals to design evaluation criteria for real-world marketing work and to score AI-generated and human samples with detailed justifications. You will rely on structured feedback and evidence-based judgment to ensure scores are reproducible and defensible, aligned with business objectives.

The role emphasizes rigorous written explanations, strong marketing background, and comfort analyzing briefs, campaigns, and brand messaging within AI-influenced

Qualifications

• 5+ years of professional experience in marketing or advertising.
• Background as a creative director, account lead, or brand strategist at top-tier global creative agencies, or in senior brand marketing roles at leading consumer companies.
• Deep fluency in writing and evaluating creative briefs, campaign development, brand positioning, and judging work against a brief and business objective.
• Exceptionally strong written communication, with the ability to explain exactly why a piece of work does or does not meet the bar.
• Detail-oriented, consistent, and comfortable having judgment reviewed and calibrated against peers.
• Prior experience with AI training, evaluation, or human-data projects is a strong plus.
• No specialized media-planning or measurement background is required for this role.

Responsibilities

• Design precise, task-specific grading criteria for real-world marketing deliverables (creative briefs, campaign concepts and decks, brand positioning and messaging frameworks, ad copy and scripts, integrated campaign plans, client-ready presentations)
• Score AI-generated and human work samples against those criteria, with detailed written justifications for every score
• Apply consistent, evidence-based judgment so that scores are reproducible and defensible
• Incorporate structured feedback from senior reviewers and iterate quickly on your work

Skills

Marketing leadership

Brand strategy

Creative evaluation

Written communication

Job description

Mercor is seeking experienced marketing professionals to design evaluation criteria for real-world marketing work and to score AI-generated and human samples with detailed justifications. You will rely on structured feedback and evidence-based judgment to ensure scores are reproducible and defensible, aligned with business objectives.

The role emphasizes rigorous written explanations, strong marketing background, and comfort analyzing briefs, campaigns, and brand messaging within AI-influenced