Role: Account Executive
Location: On-site 4 days/week in Brooklyn, NY
Compensation: Competitive base + uncapped commission + equity

Castle is a profitable, product-led Series A startup powering platforms like Canva, Atlassian, and Rockstar Games. We’re backed by Y Combinator, Index Ventures, and prominent angels from Datadog, Stripe, and New Relic. We are a team of 20, growing rapidly, and on a mission to become the standard for securing your app and your users.

We need you because we're facing overwhelming demand. We're looking for a hungry, ambitious account executive to join our small team and help us build the "Stripe for fraud prevention"—developer-first infrastructure designed for the new generation of SaaS companies and AI platforms struggling with sophisticated AI-powered threats.

This is a rare opportunity to join as our first dedicated AE and create a direct path to mastering multi-million dollar enterprise deals. You'll close deals with uncapped upside from day one, handling more qualified inbound pipeline than our current team can manage.

You'll be selling a category-leading product with an exemplary POC win rate and near-zero enterprise churn, representing the most advanced and trusted product in the space.

You’ll own…

• Full-cycle deal ownership: You'll manage renewals, expansions, and inbound prospects for our startup and mid-market segment (initially up to $100K ARR).

• Retention and growth: You will be responsible for ensuring smooth renewals, identifying upsell opportunities, and minimizing churn.

• Process building: You'll document playbooks for startup and mid-market sales and help adapt them to our enterprise motion.

This role is for you if...

• You have 2-4 years of experience in SaaS sales, account management, or customer success, and love a fast-paced, ownership-driven startup environment.

• You’ve owned renewals and new deals in the startup and mid-market space, and you know how to drive urgency.

• You are ambitious and want to scale. Your goal is to grow from handling $50K renewals to closing $1M+ contracts.

• You have a relationship-driven mindset. You see sales as a partnership and prioritize long-term value over short-term wins.

• You have technical curiosity. You are comfortable with APIs and integrations, or are genuinely excited to learn.

• You are NYC-based or willing to work from our Brooklyn office 3–4 days/week.

How to apply

Send your resume and a short note on a time you both renewed and grew an account under pressure to lisa@castle.io.