ML Model Optimization & Quality Assurance Specialist

TikTok Pte. Ltd.; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

TikTok Pte. Ltd. seeks a Model Optimization Specialist to design and optimize workflows that boost machine model performance for content moderation.

You will train models to improve policy application, reduce leakage, and balance false decisions while collaborating with policy, data, and product teams. You will build data pipelines, QA processes, and performance tracking to drive measurable quality gains and surface actionable insights for leadership.

Qualifications

• Minimum 1 year of experience in Quality Audit, Quality Governance, or Content Moderation Policy & SOP management.
• Experience with AI/ML model quality assessment, data annotation, or model evaluation (LLM/VLM preferred).
• Strong data sensitivity and analytical skills, able to present findings with data evidence.
• Ability to design structured workflows and translate policy requirements into machine-actionable signals.
• Proficiency with data dashboards, reports, and performance tracking systems.
• Excellent written and verbal communication in English.

Responsibilities

• Design, manage, and optimize end-to-end workflows to improve machine model performance in content policy enforcement.
• Develop training data pipelines, QA processes, and performance tracking systems aligned to model goals.
• Conduct structured adversarial testing on AI models, features, and content policies.
• Identify failure modes across contexts and user journeys for robust evaluations.
• Conduct structured RCA on model errors and translate findings into improvements.
• Collaborate with Algo and product teams to close root causes through policy iterations.
• Analyze model training and operational data to surface actionable insights and decisions.
• Partner with policy, product, business, and operations teams to align on quality metrics and mitigation strategies.
• Develop and maintain technical guidelines, SOPs, and casebooks for QA and annotation workflows.

Skills

Workflow design

Data analysis

Adversarial testing

Communication (English)

Cross-functional collaboration

Education

Bachelor/Higher degree (not specified)

Tools

Excel

Lark Base/Bitable

Job description

TikTok Pte. Ltd. seeks a Model Optimization Specialist to design and optimize workflows that boost machine model performance for content moderation.

You will train models to improve policy application, reduce leakage, and balance false decisions while collaborating with policy, data, and product teams. You will build data pipelines, QA processes, and performance tracking to drive measurable quality gains and surface actionable insights for leadership.