Forward Deployed Engineer

Kastle; San Francisco (CA); On-site; USD 100,000 - 130,000; Full time

Job summary

Kastle in San Francisco is seeking a Forward Deployed Engineer to be the technical owner for key accounts. In this role, you'll work closely with customers to develop AI solutions, build and configure AI agents, and manage project deployments. Candidates need 1 year of engineering and customer-facing experience, with skills in Python or Java. The position offers an opportunity to work at the intersection of engineering and customer relations while driving significant impact in the lending industry.

Qualifications

• At least 1 year of engineering experience, and 1 year of customer facing experience.
• Proficiency in Python, Java, or similar; comfortable building APIs and backend systems.
• Strong work ethic; high attention to detail; can own a project end-to-end.

Responsibilities

• Build, configure, and launch AI agents on Kastle’s platform.
• Write production-grade backend and full-stack code to integrate with systems.
• Own the full agent development life cycle from prototype to deployment.
• Act as the technical face of Kastle in key accounts.

Skills

Python

Java

Customer-facing experience

Building APIs

Attention to detail

Job description

About Kastle

Kastle is building AI operating system for consumer lending, starting with mortgage. We work with some of America's largest mortgage lenders, helping them scale their contact center and compliance operations using AI-driven voice agents. Backed by Y Combinator, Commerce Ventures, and executives from Snapdocs, Google, and WePay, we are redefining lending with AI.

About the Role

As a Forward Deployed Engineer, you’ll be the technical owner and project leader of our most important accounts. You’ll embed deeply with customers, translate business workflows into production grade AI agents, and manage the customer relationship and roadmap.

Responsibilities

• Build, configure, and launch AI agents on Kastle’s platform to handle real borrower workflows
• Write production-grade backend and full-stack code (Python, Java, TypeScript) to integrate with loan servicing systems, data sources, and telephony platforms.
• Own the full agent development life cycle: prototype quickly, set up CI/CD, monitor live usage, iterate to targets, and document best practices to speed up future projects.
• Scope ambiguous customer asks, prototype quickly, and iterate into stable deployments.
• Act as the technical face of Kastle in key accounts, building trust through speed, empathy, and impact.
• Feed customer learnings back into the core product, influencing roadmap and reusable tooling.

What We’re Looking For

• At least 1 year of engineering experience, and 1 year of customer facing experience.
• Proficiency in Python, Java, or similar; comfortable building APIs and backend systems.
• Bias toward outcomes: you care more about unblocking customers and delivering value than perfect abstractions.
• Strong work ethic; very high attention to detail; can own a project end-to-end with limited or no guidance.
• Customer-centric: confident working directly with business leaders as well as engineers.

Nice to Have

• Previous customer-facing engineering role (forward deployed, solutions engineer, etc.).