Senior Product Manager

Kastle (YC S24); San Francisco (CA); On-site; USD 200,000 - 250,000; Full time

Benefits offered by this job

Competitive compensation

Meaningful equity

401(K) plan

Paid company meals

Company offsites

Job summary

Kastle is building the AI employee for consumer lending. We are founding the product team and hiring leaders to own product for the originations vertical, partnering with customers to build features, guide deployments, and drive adoption.

You will eventually own strategy, execution, integrations, and partnerships for a full end-to-end AI originations platform. You will work with AI engineers on failure modes, evaluation criteria, and autonomy decisions, shaping product direction in a

Qualifications

• 4+ years in product management or equivalent ownership
• Hands-on experience with LLMs: prompts, evals, collaboration with engineers
• Metrics-driven decisions with instrumentation and traceability
• Experience deploying to enterprise customers and driving adoption

Responsibilities

• Own the originations product line end to end: roadmap, prioritization, delivery for AI origination agents
• Collaborate with AI engineers on failure modes, eval criteria, and autonomy judgments
• Project-manage post-sale implementations, drive customer adoption, ensure rollout success
• Close the loop from field reality back into the roadmap
• Own originations product marketing: positioning, demos, case studies from live deployments

Skills

Product management

LLMs prompts

Metrics-driven

Customer outcomes

Persuasive writing

Ambiguity handling

Tools

Prompt engineering

Job description

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.

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.

About The Role

You’re joining at an inflection point. Our usage has grown 40x in the last 6 months and our customers view us as their enterprise AI partner and want us to transform their operations across different lines of business. To help support that we are founding our product team and hiring for leaders to own product for one business vertical each. You will start by partnering closely with customers to build new features for our existing originations agents, guide deployments, support adoption and ensure they have the tools and insight they need to achieve meaningful outcomes. Overtime you will own the product strategy, product execution, integrations, and partnerships for the originations vertical to deliver an end-to-end AI originations platform.

What You’ll Do

• Own the originations product line end to end — roadmap, prioritization, and delivery for both of our AI origination agents
• Work directly with AI engineers on failure modes, eval criteria, and the judgment calls of autonomy — when the agent acts, when it asks, when it escalates
• Own deployments of your product: project‑manage post‑sale implementations, drive customer adoption, and be the reason the exec sponsor's rollout worked
• Close the loop from field reality back into the roadmap
• Own originations product marketing. Positioning, demo narrative, case studies from live deployments.

What We’re Looking For

• 4+ years in product management, or equivalent ownership as a founder, engagement manager, or operator who shipped real product
• You’ve built with LLMs hands‑on — you can write and critique prompts, reason about evals, and engage engineers on how, not just what
• A metrics habit: every claim you make about your product traces to instrumentation you made sure existed
• You’ve owned customer‑facing outcomes, not just internal roadmaps — deployments, implementations, or embedded work with enterprise customers
• You write persuasively enough that an EVP forwards it internally
• Comfort in fast‑moving, ambiguous environments where you shape the solution as much as you build it

Experience in mortgage, lending, or another regulated industry is a plus, not a requirement. We’ll teach you originations faster than we can teach product instinct.

How we’ll measure success

Whether our origination agents beat the best human baseline on the same work — conversion, cycle time, touches per file, error rates. Whether customers are live, adopted, and expanding on both agents.

How we work

Small team, high bar. You’ll have full ownership of a product line with top 10 lenders live on it from day one.

Why join Kastle

• Opportunity to work with a world class team building a generational AI company that will redefine how every loan in America is made and managed
• Ability to move fast while your work impacting millions of customers. Add a new feature in a few days and ship it to top 10 lenders the next week.
• Competitive Compensation + Meaningful Equity at a high growth company
• High ownership and direct input on product direction, company culture, and how the FDE function scales

Other Perks And Benefits

• Covered Health and Wellness Memberships
• Robust medical, vision, & dental coverage
• 401(K) plan offering
• Paid Company Meals
• Company offsites to get to know the team

Compensation Range: $200K - $250K