AI Trainer
Kastle
🇿🇦 Hirezar Summary for South African Applicants
This fully remote full time position at Kastle is open to applicants from South Africa. The estimated monthly salary is R46 – R46 ZAR. As a remote position, you can work from anywhere in South Africa — whether you're based in Johannesburg, Cape Town, Durban, or a smaller town.
Job Description
About Kastle
Kastle is building theAI operating system for consumer lending. We partner with some of America's largest mortgage lenders to transform their contact centers and compliance operations with AI voice agents.
Backed byY Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we're redefining how millions of borrowers interact with financial institutions.
This is a rare chance to join at the ground floor of a company already plugged into large-scale customers and real production use cases.
Role Overview
We are looking for a part-time AI Trainer with experience operating phones in the mortgage industry. You will help improve our AI system by providing feedback on conversations, annotating data, and testing for quality. If you have worked as a customer service or collections agent for a mortgage servicer, this role is a great fit to use your knowledge to train AI in real-world scenarios.
Responsibilities
* Annotate and label data from mortgage-related conversations.
Annotate and label data from mortgage-related conversations.
* Give feedback on AI responses to make them more accurate and helpful.
Give feedback on AI responses to make them more accurate and helpful.
* Train the AI system to handle mortgage servicing phone calls better.
Train the AI system to handle mortgage servicing phone calls better.
* Test the AI for issues, including response quality, customer experience, explanation quality, and realism.
Test the AI for issues, including response quality, customer experience, explanation quality, and realism.
* Work ~10 hours per week on flexible schedules.
Work ~10 hours per week on flexible schedules.
Requirements
* 5+ years a customer service agent for a mortgage servicing company.
5+ years a customer service agent for a mortgage servicing company.
* Knowledge of the mortgage industry, including escrow, payment questions, loss mitigation calls, QRPC requirements, servicing transfer questions, and customer conversations.
Knowledge of the mortgage industry, including escrow, payment questions, loss mitigation calls, QRPC requirements, servicing transfer questions, and customer conversations.
* Strong attention to detail and communication skills.
Strong attention to detail and communication skills.
* Reliable internet and computer for remote work.
Reliable internet and computer for remote work.
Preferred Qualifications
* 3+ years as a Mortgage Customer Service Supervisor.
3+ years as a Mortgage Customer Service Supervisor.
* Familiarity with giving feedback to customer service agents.
Familiarity with giving feedback to customer service agents.
Benefits
* Flexible part-time hours.
Flexible part-time hours.
* Opportunity to shape cutting-edge AI technology.
Opportunity to shape cutting-edge AI technology.
* Work from home.
Work from home.
Tips for South African Applicants
Timezone Advantage
South Africa (SAST, UTC+2) overlaps well with European business hours and has a few hours of overlap with US East Coast. Mention your timezone flexibility in your application.
Salary in Context
At R46/month, this role is on par with the average South African remote salary. The USD equivalent ($3/mo) benefits from the favourable exchange rate.
Application Tips
Tailor your CV to international standards — use a clean format, highlight remote work experience, and include your English proficiency. Many SA applicants succeed by emphasising their strong work ethic and cultural adaptability.
Load Shedding Preparedness
If you're applying for a remote role, having a backup power solution (UPS, inverter, or generator) and mobile data as a backup internet connection shows employers you're prepared for South Africa's infrastructure challenges.
About Kastle
Kastle is a company in the trainer industry that hires remote workers from South Africa.