Chemical Engineer AI Evaluation Specialist

About OpenTrain

OpenTrain is the #1 platform for building careers in AI training and data labeling. We help technical freelancers find AI evaluation and annotation work, grow a unified portfolio of on‑topic projects, and manage proof of work in one place. Creating an OpenTrain account is free.

• OpenTrain connects specialists to contract AI training work and supports long-term freelance careers in the space.
• We focus on real technical evaluation and annotation tasks that shape how AI systems behave.

About This Role

We are hiring a Chemical Engineer AI Evaluation Specialist to review advanced AI-generated chemical engineering text. You'll evaluate technical accuracy, logical soundness, unit consistency, safety implications, and professional judgment across typical chemical engineering topics.

This role centers on improving model outputs and prompts so responses better reflect defensible chemical engineering reasoning and safe professional practice.

• Work type: remote contract, part-time or flexible project-based workload.
• Labeling focus includes evaluation ratings, RLHF-style feedback, and prompt/response writing and refinement.

What You'll Do

You will assess AI responses against engineering standards, flag errors and unsafe guidance, and rewrite or refine prompts and model outputs so they reflect correct assumptions and calculations.

• Evaluate AI-generated responses for technical accuracy and completeness across material/energy balances, thermodynamics, unit operations, separations, process control, and scale-up.
• Challenge models with realistic calculations, scenarios, and process-informed reasoning tasks.
• Identify factual errors, flawed assumptions, missing constraints, unit inconsistencies, and unsafe recommendations.
• Refine prompts, model responses, explanations, and step-by-step engineering solutions.
• Assess model performance on process safety, operability, troubleshooting, phase behavior, and property usage.
• Advise when content should be escalated to a licensed engineer or site expert.

Requirements

You must bring hands-on chemical engineering experience and the ability to critique technical reasoning precisely in writing.

• 4+ years of professional chemical engineering experience.
• Bachelor's degree in Chemical Engineering or closely related field; advanced degrees, PE, or Chartered status strongly preferred.
• Experience in process design, plant/operations engineering, process safety, scale-up, manufacturing, utilities, EHS, quality, R&D, or controls/automation.
• Strong knowledge of material & energy balances, thermodynamics, fluid mechanics, heat & mass transfer, reaction engineering, separations, unit operations, and process control.
• Comfort with engineering calculations, assumptions, constraints, uncertainty, safety factors, and defensible reasoning.
• Familiarity with PFDs/P&IDs, Aspen Plus, HYSYS, CHEMCAD, process datasheets, PSM, HAZOP, LOPA, or SOPs is helpful.
• Prior AI data training, annotation, red-teaming, or model-evaluation experience is a strong plus.

Compensation & Schedule

This is a remote contract role paid hourly. Pay range: USD $40–$100 per hour (projects vary by scope and specialist qualifications).

Expect a flexible, project-based workload with steady availability during active review periods; the role typically requires 20+ hours per week when projects are active.

• Employment types: contractor, part-time.
• Work language: English. Eligible countries: specified list includes US, DE, BR, IN, PK, PH, SG and others; role is not worldwide.

Who Should Apply

This role is for experienced chemical engineers who are comfortable critiquing technical content, spotting subtle errors, and communicating precise written feedback. If you enjoy translating engineering judgment into clear critiques and improving how models explain calculations and assumptions, apply.

• Ideal for practitioners with plant or design experience plus strong written communication.
• Good fit for candidates who want flexible, remote technical contract work that influences real AI behavior.

How It Works

OpenTrain AI is hiring for this contract position and you will apply and manage engagements through your OpenTrain profile. Build your profile to show relevant chemical engineering experience and past annotation or AI evaluation work.

Selected specialists provide evaluation ratings, written feedback, and prompt/response refinements during contracted project periods. Tasks focus on text-based evaluation and RLHF-style guidance; no on-site work is required.

• Create a free OpenTrain account to apply and manage assignments.
• Work is remote and delivered through the OpenTrain workflow; you will be contracted for specific review projects.