Information Security Engineer
Castle Island Ventures is a venture capital firm focused exclusively on public blockchains, investing in early-stage companies at the intersection of traditional finance and public blockchains.
About Castle Island Ventures
Castle Island Ventures is a venture capital firm focused exclusively on public blockchains. Their mission is to support entrepreneurs building the infrastructure and application companies required to help transformative blockchain protocols reach their full potential. They describe their focus as 'accelerating frictionless finance,' investing in early-stage companies operating at the intersection of traditional finance and public blockchains. The firm also produces a podcast and newsletter covering topics in this space, and maintains a portfolio of companies whose open roles are listed on their jobs board.
Skills
About the Role
You will be the technical anchor of our internal security posture. You deploy, manage, and tune enterprise grade security stacks (EDR DLP IAM CASB MDM) with a focus on deep integration and automation. You lead AI Security by implementing and securing AI driven workflows and governing LLM usage to protect against data leakage and prompt injection. You build and maintain high fidelity detections and guardrails that align with real world attack techniques. You partner with Engineering IT and DevOps to ensure security controls are frictionless, automated, and effective.
Requirements
- 4-5+ years of hands-on experience in InfoSec Engineering or SecOps within high-growth cloud-native environments
- AI Security Mastery: practical experience securing AI adoption and leveraging AI driven platforms to scale defensive capabilities
- Deep technical stack: endpoint security (macOS/Linux), SaaS ecosystems, and identity (Okta/OIDC)
- Developer mindset: advanced scripting skills Python to automate and build security integrations
Responsibilities
- Deploy, manage, and tune enterprise grade security stacks (EDR, DLP, IAM, CASB, MDM) with a focus on deep integration and automation
- Lead AI Security by implementing and securing AI driven workflows and governing LLM usage to protect against data leakage and prompt injection
- Build and maintain high fidelity detections and guardrails that align with real world attack techniques
- Partner with Engineering, IT, and DevOps to ensure security controls are frictionless, automated, and effective