AI Trainer (Part-time)

🌐 Remote💼 Part-time🗓 2026-03-10 → 2026-09-25

Core

Part-time AI Trainer improving an AI voice agent system for consumer lending by annotating mortgage conversation data and providing feedback on AI responses.

Role type

Part-time AI Trainer (Data Annotation & Quality Assurance)

Builds

AI voice agents for mortgage lenders

Domain

Consumer lending / Mortgage servicing / AI

Deliverable

production ML models

Required skills

Mortgage industry knowledge, customer service experience, data annotation, quality testing, attention to detail

Preferred skills

Mortgage Customer Service Supervisor experience, feedback training experience

Technologies

AI voice agents

Responsibilities

Annotate and label data from mortgage-related conversations, Give feedback on AI responses to improve accuracy, Test AI for issues including response quality and realism, Train AI system to handle mortgage servicing phone calls

Seniority

Part-time, hands-on contributor

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About Kastle

Kastle is building the AI employee for consumer lending. We work with some of America's largest banks and mortgage lenders, helping them scale their contact center and compliance operations using autonomous AI Agents that process payments, originate loans, and help customers get a world class experience during the biggest financial decisions of their lives. **We've processed over $1 billion in transactions** and are backed by Y Combinator and Commerce Ventures. If you are interested in building AI that is applied in the real world where precision, reliability, and performance matter and redefi