Singapore Domestic Tax Specialist — Tax Research Review

About OpenTrain

OpenTrain is the #1 platform for people building careers in AI training and data labeling. We help skilled contributors find meaningful, remote work reviewing and improving the examples that teach modern AI systems.

Creating an OpenTrain account is free — our platform supports contractors with project matching, secure payment, and a visible portfolio that documents your AI-training experience.

About AI training and why this work matters

AI training (also called data labeling or human feedback work) is the human foundation of modern AI: people prepare and review examples that teach models how to reason, answer, and behave. Contributors directly shape model outputs and quality.

This role places experienced tax professionals at the center of that process — your domain knowledge helps ensure models give legally accurate, defensible answers about Singapore tax law.

The role

OpenTrain is hiring a Singapore Domestic Tax Specialist to review AI-generated tax research focused on Singapore domestic taxation. You will validate technical accuracy, assess legal authorities and reasoning, improve model answers, and strengthen evaluation rubrics.

This is a contractor, part-time role for contributors based in Singapore. Time commitment is 20+ hours per week. Work is paid hourly at USD $95–$125 per hour and centers on text review and evaluation tasks (EVALUATION_RATING and TEXT_GENERATION).

What you'll do

• Review Singapore tax research questions and evaluate the reasoning and legal analysis behind AI-generated answers.
• Validate tax conclusions against Singapore domestic tax law, including IRAS guidance, the Income Tax Act, the GST Act, and related statutes.
• Create and improve gold-standard answers so model outputs align with correct legal analysis and authorities.
• Refine and strengthen grading rubrics to ensure consistent, reliable evaluation of model responses.
• Monitor and flag legislative or policy updates that affect the accuracy of research and model answers.

Requirements

• Minimum 5 years of experience in Singapore tax practice.
• Accredited Tax Practitioner (Singapore), CA Singapore, Chartered Accountant, or equivalent professional qualification required.
• Deep expertise in Singapore domestic taxation and hands-on experience with IRAS rulings and statutory references.
• Experience across income tax, GST, withholding tax, property tax, stamp duty, or related advisory and dispute work.
• Strong analytical and written communication skills; experience drafting tax memoranda or advisory opinions.
• Availability for 20+ hours/week and ability to work as a contracted, part-time contributor based in Singapore. English fluency required.

Helpful background

• Corporate income tax and individual income tax advisory experience.
• Practical knowledge of GST rules and GST advisory work.
• Experience with withholding tax, property tax, and stamp duty issues.
• Tax advisory, dispute resolution, or rulings engagement experience.