Silmaril

Security for agents that self-improves.

We are backed by Y Combinator and based in San Francisco.

The Opportunity

A new security category is forming around AI agents. The companies that win now will define how the world secures increasingly capable systems.

You will be Silmaril’s first commercial leader. Your mandate is to win strategic customers, establish the category, and turn founder-led momentum into a repeatable commercial system.

We are looking for the best enterprise seller from a breakout cybersecurity company.

You consistently exceeded ambitious targets, created your own opportunities, and won complex deals with sophisticated buyers. When an account mattered, company leadership wanted you in the room.

You bring an exceptional cybersecurity network. CISOs take your calls. Security leaders trust your judgment. Founders, investors, partners, and former customers make introductions because your reputation creates movement.

You Will Own

Strategic Customers

Lead enterprise opportunities from initial access through technical evaluation, executive alignment, procurement, close, deployment, and expansion.

Pipeline

Create high-value opportunities through executive relationships, targeted outbound, referrals, partners, communities, and original market insight.

Category

Define how the market understands the problem, why it matters now, and why Silmaril is built to solve it.

Complex deals

Identify the real buyer, operational stakes, budget, decision process, competition, and path to commitment.

Executive alignment

Build trust across security leadership, AI teams, engineering, legal, procurement, finance, and company leadership.

Network

Turn trusted relationships across cybersecurity into access, intelligence, partnerships, and customer opportunities.

Commercial System

Establish the qualification, evaluation, messaging, account planning, forecasting, and expansion systems that make success repeatable.

GTM Organization

Recruit and develop the commercial team that will scale Silmaril.

You

Were the top enterprise seller at a high-growth cybersecurity company and have the results to demonstrate it.
Have personally created pipeline and closed important enterprise accounts.
Understand cybersecurity buyers, technical evaluations, budgets, competitive dynamics, and organizational politics.
Network to produces meetings, introductions, market intelligence, and deals.
Move fluently between a CISO conversation, technical evaluation, account strategy, commercial negotiation, and forecast.
Operate with intensity, precision, resilience, and complete ownership of the outcome.
Want to define a market, build an enduring company, and secure the systems that will shape the future.
Want to build in person with a small, exceptional team in San Francisco.

Bonus

Experience selling AI, infrastructure, developer tooling, or another deeply technical product.
Experience creating an enterprise sales motion at an early-stage company.
A strong public presence or record of shaping how security leaders understand an emerging category.

Silmaril (YC P26)

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