CISO

Glean; Mountain View (CA); Hybrid; USD 424,000 - 489,000; Full time

Benefits offered by this job

Medical coverage

Vision coverage

Dental coverage

401k plan

Education stipend

Wellness stipend

Lunches provided

Job summary

Glean is seeking a Chief Information Security Officer to lead company-wide and product security. Reporting to the CTO, you will define strategy across security domains, risk and compliance, and incident response, coordinating with engineering, legal, and product leadership to reduce risk.

This executive role requires deep architectural judgment, podcasting a durable security program, and communicating risk and trade-offs clearly across the organization.

Qualifications

• Senior security leadership experience at a high-growth tech company.
• Strong depth in product/app security, cloud security, identity management, and vulnerability management.
• Proven ability to lead security programs through high-severity incidents and drive durable improvements.
• Experience with governance, compliance, audit readiness, and risk-based decisions.

Responsibilities

• Set risk-based security strategy, priorities, policies, and metrics for scale.
• Partner with Engineering and Product to bake security into architecture and development.
• Oversee vulnerability management, secure development, and supply-chain security programs.
• Lead corporate security, IT security, cloud infra, and privileged access controls.
• Ensure incident detection, containment, recovery, and lessons learned; coordinate with leaders.

Skills

Executive security leadership

Security architecture depth

Vulnerability & incident response

Risk management & governance

Security product collaboration

Team leadership & hiring

Executive communication

Security for AI/ML

Job description

Glean is the Work AI platform that helps everyone work smarter with AI. What began as the industry’s most advanced enterprise search has evolved into a full-scale Work AI ecosystem, powering intelligent Search, an AI Assistant, and scalable AI agents on one secure, open platform. With over 100 enterprise SaaS connectors, flexible LLM choice, and robust APIs, Glean gives organizations the infrastructure to govern, scale, and customize AI across their entire business - without vendor lock-in or costly implementation cycles.

At its core, Glean is redefining how enterprises find, use, and act on knowledge. Its Enterprise Graph and Personal Knowledge Graph map the relationships between people, content, and activity, delivering deeply personalized, context-aware responses for every employee. This foundation powers Glean’s agentic capabilities - AI agents that automate real work across teams by accessing the industry’s broadest range of data: enterprise and world, structured and unstructured, historical and real-time. The result: measurable business impact through faster onboarding, hours of productivity gained each week, and smarter, safer decisions at every level.

Recognized by Fast Company as one of the World’s Most Innovative Companies (Top 10, 2025), by CNBC’s Disruptor 50, Bloomberg’s AI Startups to Watch (2026), Forbes AI 50, and Gartner’s Tech Innovators in Agentic AI, Glean continues to accelerate its global impact. With customers across 50+ industries and 1,000+ employees in more than 25 countries, we’re helping the world’s largest organizations make every employee AI-fluent, and turning the superintelligent enterprise from concept into reality.

If you’re excited to shape how the world works, you’ll help build systems used daily across Microsoft Teams, Zoom, ServiceNow, Zendesk, GitHub, and many more. You'll be deeply embedded where people get things done. You'll ship agentic capabilities on an open, extensible stack, with the craft and care required for enterprise trust, as we bring Work AI to every employee, in every company.

About the Role

Glean is seeking a Chief Information Security Officer (CISO) to lead security for Glean as a company and for our core product. Reporting to the CTO, you will set the strategy and operating model across product and platform security, corporate security, detection and response, risk, and compliance, turning that strategy into measurable risk reduction.

This is an executive role for a leader who combines 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 an AI company. You should be able to go deep on architecture and incidents, build a durable program, and communicate clearly about risk and trade-offs.

You will

• Set a risk-based security strategy, priorities, policies, metrics, and decision-making mechanisms that scale with Glean’s business. Give executives a clear view of material risks, remediation progress, and decisions that require business ownership, with a clear operating cadence to ensure risks are visible, owned, prioritized, and reduced.
• Partner with Engineering and Product to build security into architecture, design, development, release, and operations. Guide security across application and platform layers, identity and authorization, customer-data flows, cloud environments, integrations, and AI-enabled capabilities, including models, agents, and the tools and data they can access.
• Lead a measurable vulnerability-management and secure-development program spanning threat modeling, code and dependency risk, software supply-chain security, penetration testing, bug bounty, remediation ownership, and validation. Use automation and AI-assisted analysis thoughtfully to increase coverage and shorten time to fix.
• Oversee security for corporate systems, identity, endpoints, SaaS applications, cloud infrastructure, and privileged access. Partner with IT and technical owners to improve preventive controls, monitoring, and operational resilience.
• Ensure the organization can detect, assess, contain, recover from, and learn from security incidents. Clarify escalation and decision paths; coordinate with Engineering, Legal, Privacy, Communications, and business leaders; and ensure corrective actions are completed and validated.
• Own security risk management, compliance strategy, audit readiness, and control effectiveness. Support frameworks and customer or regulatory requirements relevant to Glean’s business, which may include SOC 2, ISO 27001, HIPAA, PCI, and FedRAMP. Track meaningful outcomes in risk reduction, vulnerability remediation, incident readiness, and control effectiveness.
• Build and grow a high-performing team across security engineering, enterprise security, detection and response, and governance. Set clear ownership, develop technical and people leaders, and create an environment where teams can execute with focus and accountability.
• Build strong working relationships across the company, helping teams understand practical safeguards and make informed risk decisions without unnecessary friction. Partner with customer-facing security leaders on escalations and assurance needs. Contribute security expertise to commercial security products in partnership with their Product and business owners; those teams retain ownership of their product roadmaps.

About you

• Senior security leadership experience with accountability for a broad, enterprise-scale security program at a high-growth technology or product company. Experience as a CISO, deputy CISO, or senior security executive is strongly preferred.
• Strong technical depth across product and application security, cloud and infrastructure security, identity and access management, secure development, and vulnerability management. You can 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 the judgment to distinguish control completion from actual risk reduction.
• A 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 across teams.
• Excellent executive communication and judgment. You can explain technical issues and uncertainty plainly, recommend a path forward, and escalat material risk at the right time. You bring a collaborative, pragmatic leadership style that earns trust while holding a high bar for security outcomes.
• Especially valuable: Experience securing enterprise AI, machine-learning, LLM, or agentic systems, including data handling, model and application boundaries, tool access, and adversarial testing; using automation or AI-enabled techniques to improve security analysis, detection, investigation, or remediation; supporting regulated customers or programs such as FedRAMP; or preparing a company for public-company or IPO-level governance and disclosure expectations.

Location

• This role is hybrid (4 days a week in our San Francisco Bay Area office).

The standard base salary range for this position is $424,300 - $489,400 annually.

Compensation offered will be determined by factors such as location, level, job-related knowledge, skills, and experience.

Certain roles may be eligible for variable compensation, equity, and benefits.

We offer a comprehensive benefits package including competitive compensation, Medical, Vision, and Dental coverage, generous time-off policy, and the opportunity to contribute to your 401k plan to support your long-term goals.

When you join, you'll receive a home office improvement stipend, as well as annual education and wellness stipends to support your growth and wellbeing.

We foster a vibrant company culture through regular events, and provide healthy lunches daily to keep you fueled and focused.

We’re committed to building and sustaining a diverse, inclusive workplace. We strive to attract and retain people with a wide range of backgrounds, experiences, and perspectives, and we do not discriminate on the basis of gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.

#LI-HYBRID

At Glean, AI fluency is core to how we work and we're committed to ensuring every new hire feels confident integrating AI into their everyday work. As part of the interview process, you'll complete a brief AI-focused exercise or discussion so we can understand how you think about, design, and use AI to drive impact in your role. Feel free to reference any tools, platforms, or workflows you use today — prior Glean experience isn't required. Feel free to reference any tools, platforms, or workflows you use today — prior Glean experience isn't required.

Global Data Privacy Notice for Job Candidates and Applicants:

Depending on your location, the General Data Protection Regulation (GDPR), California Consumer Privacy Act (CCPA), or other privacy laws may regulate the way we manage the data of job applicants. Our full notice outlining how data will be processed as part of the application procedure for applicable locations is available in our Privacy Policy . By submitting your application, you are agreeing to our use and processing of your data as required. US applicants and their applications are subject to arbitration of disputes as outlined in our Applicant Arbitration Agreement .