Analytical & Physical Chemist

About the role

Use your hands-on experience in chemistry to write research-level problems for AI models. Remote, flexible contract work.

AfterQuery works with leading AI labs to build the expert data that tests and trains AI models. We're looking for analytical and physical chemists who work with raw lab measurements: the titrations, spectra, calorimetry, electrochemistry and kinetics runs you turn into results.

Requirements

• Technical: Working knowledge of Python for fitting and analyzing your own measurements.

Preferred

• Background: a Master's or PhD in chemistry with substantial bench time; method validation or QC lab experience is a strong signal.
• Hands-on work with real data, rather than synthesis-only organic chemistry or purely computational chemistry.

Contract and pay

Flexible, independent-contractor work: $300 per approved task, about 6 hours each (roughly $50 per hour), with no cap on how many tasks you take on.

All accepted experts undergo standard background and identity verification.

Why apply

• $300 per approved task (roughly $50 per hour)
• Fully remote and flexible, with no fixed weekly schedule

Responsibilities

• Write research-level problems in your area of expertise
• Work independently and manage your own time
• Keep your work accurate, clear and well documented

Required qualifications

• Hands-on experience working with your own raw lab measurements in Python or a similar language
• Able to write clearly about technical work in your field
• Able to work independently and manage your own time. This is flexible, task-based work with no fixed weekly schedule

Preferred qualifications

• Master's or PhD in chemistry with substantial bench time
• Method validation (ICH or ISO 17025); measurement-uncertainty budgets; fitting kinetic or thermodynamic models to your own data
• Public code, a thesis or papers that show your technical work
• Prior experience in data annotation, data labeling or AI/ML evaluation work