Founding Applied AI Engineer at Kastle

About the role

As a Founding Applied AI Engineer, you will play a crucial role in integrating advanced AI technologies into Kastle’s platform. You’ll work on fine-tuning large language models (LLMs), designing AI workflows for highly regulated enterprises, and ensuring our AI agents deliver precise, compliant, and effective interactions.

Responsibilities

• AI Model Integration: Fine-tune and deploy LLMs for real-time borrower interactions.
• Prompt Engineering: Design, test, and iterate on prompts to optimize AI performance and compliance.
• Custom AI Solutions: Train and implement domain-specific AI models for mortgage servicing.
• Scalability & Compliance: Ensure AI solutions meet regulatory standards (FDCPA, RESPA, TILA) and scale efficiently.
• Data Pipelines & APIs: Build robust AI-driven workflows that integrate seamlessly with loan servicing platforms.
• Continuous Optimization: Monitor AI performance, reduce error rates, and enhance borrower experience.

Requirements

• 1+ years in applied AI, ML engineering, or a related role.
• Proficiency in Python, TensorFlow/PyTorch, and deep learning frameworks.
• Experience fine-tuning LLMs (Llama, GPT) and designing AI prompt workflows.
• Strong product mindset—ability to bridge AI capabilities with real-world mortgage servicing needs.
• Experience with deploying AI models into production and optimizing for speed and accuracy.

Qualifications

• Strong communication skills to collaborate with product, engineering, and compliance teams.
• Build and scale AI applications that interface directly with consumers.
• Get to interact directly with customers on a daily basis and see them use your work in production and collect feedback.
• Work closely with a world-class founding team backed by top investors.
• High ownership and autonomy, shaping the company’s technical direction.

Benefits

• Competitive salary
• Early-stage equity
• Frequent company paid site visits to customers

Pay

$180K - $220K

Schedule

Full-time