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AI Review Authenticity Verification Developer

Eli Sato

Full-time · Job · New_York

About the role

Fake reviews undermine marketplace trust. A seller with 2,000 reviews, 40% of which are manufactured by a review farm, has an unfair advantage over sellers with genuine feedback — and the buyer who purchases based on those reviews is deceived. FTC enforcement has increased; marketplace liability for hosting fake reviews has grown; and more importantly, buyers who encounter fake reviews lose trust in the entire platform. Our marketplace platform hosts 2.8 million listings and 45 million reviews. Review authenticity is a persistent challenge: review farm operators adapt their generation techniques faster than static rule systems can update. The ML approach needs to detect authentic-seeming manufactured reviews, not just obvious spam. You'll build the review authenticity detection system: training NLP models on stylistic and semantic signals of manufactured content, implementing reviewer behavior analysis that detects coordinated review patterns across accounts, and building the confidence scoring that routes borderline reviews for human moderation rather than automating all decisions. The evaluation framework is critical — precision and recall trade-offs differ between removing a real seller's genuine reviews and letting manufactured reviews stay.

Responsibilities

  • Train review authenticity models on stylistic, semantic, and behavioral signals of manufactured content
  • Implement reviewer behavior analysis detecting coordination patterns across account review histories
  • Build confidence scoring routing borderline authenticity cases for human moderation review
  • Develop adversarial robustness as review farm techniques evolve toward more authentic-seeming content
  • Create precision-recall trade-off analysis supporting policy decisions on moderation thresholds
  • Monitor false positive rates ensuring authentic reviews aren't removed at unacceptable rates

Requirements

  • 3+ years in NLP engineering with content moderation, fraud detection, or trust and safety experience
  • Strong Python and PyTorch skills with text classification model development
  • Understanding of adversarial content generation and review manipulation techniques
  • Experience building human-in-the-loop moderation workflows for consequential decisions
  • Ability to navigate precision-recall trade-offs in policy-sensitive detection contexts

Benefits

  • Fully remote with flexible schedule
  • Health and dental insurance
  • $3,000 annual professional development budget
  • 401(k) with match
  • Equity options

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Categories

AI Product & Strategy NLP & Prompt Engineering

Skills

python pytorch hugging face sql fastapi

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Job Type

Full-time

Level

Mid-Level

Language

English

Salary Range

$100k – $130k / year

AI Expertise

AI Product & Strategy NLP & Prompt Engineering

Skills

python pytorch hugging face sql fastapi statistics

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