Chemical Engineer Expert

Chemical engineers to build the process design and safety scenarios frontier AI labs use to test model judgment. Remote, async, paid weekly. AfterQuery builds the expert evaluation data that frontier AI labs use to measure and improve their models. We're hiring chemical engineers as contractors to author and grade the process design and safety scenarios those evaluations run on. What you'll actually do Author realistic process scenarios, from mass balances through safety reviewWrite reference answers with the process and safety reasoning behind each decisionGrade model output for technical accuracy and process safetyFlag designs that read plausible but would be unsafe or infeasible at scale Who this is for Engineers with a degree in chemical engineering or a closely related fieldPractitioners with at least 2 years of process, plant, or product engineering experienceEngineers with depth in process design, process safety, or scale upClear writers who can document the reasoning behind a process decision Contract and pay $100 to $130/hr, paid weekly via Stripe. Your rate is set from your experience, not negotiated down after you start.Fully remote, fully async. No fixed hours.Minimum 10 hours per week, no maximum. Scale up or down week to week.No screen recording, no keystroke monitoring, no idle timers.Independent contractor. Ongoing project work rather than single task batches. How our hiring process works Apply at /apply/chemical-engineer-expert. About five minutes. Resume plus a few structured questions.Resume review. Every application gets read against a published rubric and gets a decision.Written assessment. You may be asked to take a written assessment for further placement.Onboarding. Sign the contractor agreement, connect Stripe, and get platform access.Project match. You're matched to live work in your specialty, usually within a week of onboarding. About AfterQuery AfterQuery is an expert data lab. We build the evaluation and training data that frontier AI labs use to measure what their models can and can't do in real professional work. Our contributors are practicing professionals, not annotators, and the work is credited, reviewed, and paid at professional rates.

Responsibilities

• Author realistic process scenarios from mass balances through safety review
• Write reference answers with the process and safety reasoning behind each decision
• Grade model output for technical accuracy and process safety
• Flag designs that read plausible but would be unsafe or infeasible at scale

Required qualifications

• Degree in chemical engineering or a closely related field
• 2+ years of process, plant, or product engineering experience
• Depth in process design, process safety, or scale up
• Clear written English for documenting process reasoning
• Able to commit at least 10 hours per week

Preferred qualifications

• PE license or process safety certifications
• Process simulation depth such as Aspen Plus or HYSYS
• Regulated industry experience such as pharma or petrochemical

Why apply

• $100 to $130/hr, paid weekly via Stripe
• 100% remote and fully async
• Shape how frontier models reason about chemical engineering
• Ongoing project work with hours you set each week

Where you can work

This role is 100% remote: you can work from any country except Afghanistan, Argentina, Bangladesh, Burundi, Bolivia, Brazil, Belarus, DR Congo, Central African Republic, Congo (Republic), Chile, China, Colombia, Cuba, Dominican Republic, Egypt, Eritrea, Ghana, Gibraltar, Haiti, Iraq, Iran, Japan, Cambodia, Comoros, North Korea, South Korea, Libya, Monaco, Myanmar, Macau, Nigeria, Nicaragua, Palestine, Paraguay, Russia, Saudi Arabia, Sudan, Somalia, South Sudan, Syria, Chad, Turkmenistan, Uruguay, Venezuela, Yemen and Zimbabwe.