# Staff AI Engineer at Kastle

- Company: Kastle
- What the company does: One platform that keeps originations, fulfillment, and servicing moving 24/7, built for regulated work and connected to the systems you already use. Backed by Y Combinator.
- Company website: https://kastle.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco
- Work setup: On-site
- Pay: $250K to $350K base salary per year (USD)
- Posted: 2025-11-22
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/kastle/e80efb99-7c18-4af1-a591-c082528bf6b9
- Page: https://www.1752.vc/careers/jobs/kastle-staff-ai-engineer/

## About the role

As a Founding Applied AI Engineer, you'll be instrumental in building the technical foundation of Kastle's AI platform. You'll fine-tune large language models, design AI workflows for highly regulated enterprises, and ensure our voice agents deliver precise, compliant, and effective borrower interactions. This role is ideal for an engineer who is passionate about applied AI, eager to solve real-world challenges, and excited to build the technical foundation of an early-stage AI startup.

## What they're looking for

- 3+ years building and deploying ML/AI systems in production environments
- Strong proficiency in Python and deep learning frameworks (TensorFlow, PyTorch)
- Experience with LLM orchestration frameworks (LangChain, LlamaIndex, or similar)
- Track record of shipping end to end AI systems that is at the core of company operations
- Strong product mindset and ability to translate business requirements into AI solutions
- Excellent communication skills to collaborate across product, engineering, and compliance teams

Tags: Engineering