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Salary: USD 424,300 - 489,400 / annual
Glean is seeking a Chief Information Security Officer (CISO) to lead comprehensive security strategy and operations across product, platform, corporate systems, and compliance. Reporting to the CTO, you will set strategy and operating models for product and platform security, corporate security, detection and response, risk management, and compliance—translating strategy into measurable risk reduction.
This is an executive leadership role combining technical judgment with strong organizational leadership. You will partner closely with Engineering, Product, Legal, IT, and company leadership to make sound security decisions at the pace of a high-growth AI company. You should be able to engage deeply on architecture and incidents, build durable security programs, and communicate clearly about risk and trade-offs.
Key responsibilities include:
- Setting risk-based security strategy, priorities, policies, and metrics that scale with business growth, providing executives clear visibility into material risks and remediation progress
- Partnering with Engineering and Product to embed security into architecture, design, development, release, and operations across application and platform layers, identity and authorization, customer-data flows, cloud environments, integrations, and AI-enabled capabilities
- Leading a measurable vulnerability-management and secure-development program spanning threat modeling, code and dependency risk, software supply-chain security, penetration testing, bug bounty, and remediation
- Overseeing security for corporate systems, identity, endpoints, SaaS applications, cloud infrastructure, and privileged access
- Ensuring the organization can detect, assess, contain, recover from, and learn from security incidents with clear escalation paths and corrective action validation
- Owning security risk management, compliance strategy, audit readiness, and control effectiveness across frameworks such as SOC 2, ISO 27001, HIPAA, PCI, and FedRAMP
- Building and growing a high-performing multidisciplinary team across security engineering, enterprise security, detection and response, and governance
- Building strong cross-functional relationships to help teams understand practical safeguards and make informed risk decisions; partnering with customer-facing security leaders on escalations and assurance needs
Glean is the Work AI platform that helps organizations work smarter with AI. The company has evolved from advanced enterprise search into a full-scale Work AI ecosystem, powering intelligent search, AI assistants, and scalable AI agents on a secure, open platform. With over 100 enterprise SaaS connectors, flexible LLM choice, and robust APIs, Glean enables organizations to govern, scale, and customize AI across their business without vendor lock-in. The company has been recognized by Fast Company (Top 10 Most Innovative Companies, 2025), CNBC's Disruptor 50, Bloomberg's AI Startups to Watch, Forbes AI 50, and Gartner's Tech Innovators in Agentic AI. With 1,000+ employees across 25+ countries and customers in 50+ industries, Glean is helping large organizations make every employee AI-fluent.
REQUIREMENTS:
- Senior security leadership experience with accountability for a broad, enterprise-scale security program at a high-growth technology or product company. CISO, deputy CISO, or senior security executive experience strongly preferred.
- Strong technical depth across product and application security, cloud and infrastructure security, identity and access management, secure development, and vulnerability management. Must be able to engage credibly with senior engineers on architecture and remediation choices.
- Experience building and operating effective security, detection, and incident-response programs, including leading through high-severity incidents and ensuring lessons result in durable improvements.
- Practical expertise in security risk management, governance, compliance, and audit readiness, with judgment to distinguish control completion from actual risk reduction.
- Track record of partnering with Product and Engineering to ship secure products and embed security in fast-moving development organizations.
- Experience building, leading, and retaining strong multidisciplinary teams; setting priorities; allocating resources; and creating clear accountability.
- Excellent executive communication and judgment. Ability to explain technical issues plainly, recommend paths forward, and escalate material risk appropriately. Collaborative, pragmatic leadership style that earns trust while maintaining high security standards.
- Especially valuable: Experience securing enterprise AI, machine-learning, LLM, or agentic systems (data handling, model and application boundaries, tool access, adversarial testing); using automation or AI-enabled techniques to improve security analysis, detection, investigation, or remediation; supporting regulated customers or FedRAMP programs; or preparing companies for public-company or IPO-level governance and disclosure expectations.
