Head of Security

Open Sea is the gateway to web3’s next chapter—where NFTs, fungible tokens, and emerging digital assets converge to create open, user-owned economies. As a foundational player in the crypto space, we’re building infrastructure that supports millions of users and sets new standards for how people discover and exchange digital value.

Our team is small but mighty: hands-on, fast-moving, and deeply committed to shipping meaningful work. We're remote-first by design, AI-empowered by default, and guided by values that prioritize ownership, trust, and progress. At Open Sea, you’ll be challenged to grow fast while being supported by a talent-dense team shaping the future of crypto.

We’re looking for a Head of Security to join Open Sea to champion security for our team, platform, and millions of users. Security is key to everything we do, but today is distributed among our engineers, as well as a few security specialists. This role will level up our investment & expertise in the domain.

You will own security end-to-end: application, operational, and corporate with a focus on hands-on execution mixed with high-level strategy setting, shaping the security posture for one of the most prominent platforms in web
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• Take hands-on ownership of all aspects of security at Open Sea including threat detection/response, infra, application & organizational security

• Establish robust risk management processes, conducting regular assessments to identify vulnerabilities and implement mitigation strategies

• Lead incident response and crisis management efforts, ensuring the organization can respond effectively to security threats

• Foster a security-first culture through awareness programs and by engaging with stakeholders across all functions

• Oversee security compliance initiatives and align with relevant industry standards while enabling our startup agility

• Collaborate with executive leadership to ensure security initiatives support Open Sea's business goals

• 10+ years in security, with experience at a crypto company that ships quickly

• Practical knowledge of blockchain security and crypto-specific attack vectors

• Deep expertise operating in a cloud-hosted environment (AWS preferred)

• Experience developing and implementing large-scale security strategies in a software company

• Expertise in risk management, incident response, and security governance within the crypto space

• Proven ability to communicate effectively with both technical and executive stakeholders

• Passion for improving crypto security combined with a methodical approach to solving complex security challenges

• High ownership mentality

• AI-forward mindset with hands-on experience adopting and integrating AI tools

The base salary for this full-time position in the United States, spanning multiple internal levels depending on qualifications, ranges between $270,000 to $350,000 plus benefits & equity. Compensation for internationally based candidates will vary to reflect local market conditions.

If you don't think you meet all of the criteria above but still are interested in the job, please apply. Nobody checks every box, and we're looking for someone who is excited to join the team.

#LI-Remote

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Health Benefits:

We cover 100% Dental/Vision/Medical for employees and 90% for dependents

🌴 Flexible Time Off Policy:
Our flexible time off policy is aimed at letting our employees take as much time off as they'd like to refresh so long as it doesn't interfere with their ability to meet their goals and contribute effectively to company velocity

👶 Parental Leave: 16 Weeks of Paid Parental Bonding & up to 8 additional weeks for the birthing parent

💛 Mental Health:
We offer access to Spring Health, covering 8 therapy & 8 coaching sessions per year

📅 11 Company Holidays

🏦 Fidelity 401K Plan

📱 Internet/Mobile Reimbursement Plan

🧘 Reimbursement or Monthly Snack Delivery

✈ Company & Team retreats to get together for fun and collaboration

☕ Team Member Co-Working and Gathering Expense

🖥 Mac Book Pro & WFH Stipend to make sure you are set up for success

🌯 Weekly $50 Uber Eats credit

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