Senior Human Factors Expert - Usability & Safety (Remote)

Alpheva; United States; Remote; USD 234,000 - 303,000; Part time

Job summary

Alpheva is seeking a senior human factors expert for remote, contract work on AI evaluation projects focused on usability, safety, workload, and human–machine interaction. Review model responses for confounded evidence and invalid assumptions, and write reference answers with traceable corrections.

Pay is hourly: $170–$220, with first payment timing to be confirmed before scaling up. Ideal candidates have 7+ years in human factors, senior judgment in usability and safety, and the ability to

Qualifications

• 7+ years of substantive experience in human factors or ergonomics.
• Demonstrated senior-level judgment in usability, safety, workload, and human-machine interaction, with substantial responsibility for reviewing or delivering this work.
• Ability to write precise reference answers, assess competing approaches, and justify corrections with traceable evidence.

Responsibilities

• Review model responses and worked examples for confounded evidence, overgeneralized findings, and invalid measurement assumptions.
• Write reference answers and scoring criteria grounded in usability, safety, workload, and human-machine interaction.
• Explain consequential errors, evidence gaps, and the reasoning behind your corrections.

Skills

Senior-level judgment

Usability & human factors

Evidence-based critique

Job description

Alpheva is seeking a senior human factors expert for remote, contract work on AI evaluation projects focused on usability, safety, workload, and human–machine interaction. Review model responses for confounded evidence and invalid assumptions, and write reference answers with traceable corrections.

Pay is hourly: $170–$220, with first payment timing to be confirmed before scaling up. Ideal candidates have 7+ years in human factors, senior judgment in usability and safety, and the ability to