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Chief Information Security Officer (CISO)

Fractile - London, United Kingdom - In-office - posted 2026-10-23

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Fractile is building next-generation AI computing technology through innovative hardware and software solutions. The company brings together exceptional talent in semiconductor engineering, software, and AI to solve ambitious challenges in computing. You will lead Fractile's information security, corporate IT, and IT infrastructure functions as Chief Information Security Officer. This is a strategic and hands-on leadership role combining cybersecurity expertise with ownership of IT operations, infrastructure, and service delivery. Key responsibilities include: - Developing and executing comprehensive information security, IT, and infrastructure strategy aligned with business objectives and global growth - Owning corporate IT operations, infrastructure, networks, cloud environments, endpoints, and enterprise systems - Leading IT service delivery including employee technology, hardware/software provisioning, IT support, onboarding/offboarding, and asset management - Protecting proprietary semiconductor designs, intellectual property, source code, research, and confidential business information - Partnering with engineering teams to ensure secure, reliable, scalable infrastructure for semiconductor development and research - Establishing cybersecurity governance, risk management frameworks, policies, and controls aligned with industry standards - Leading incident response, threat detection, vulnerability management, disaster recovery, and business continuity planning - Overseeing IT and security architecture including identity management, network security, endpoint protection, and cloud security - Managing technology vendors, infrastructure providers, third-party security risks, IT budgets, and procurement - Building, leading, and developing high-performing IT, infrastructure, and security teams Fractile has recently raised $220M from investors including Founders Fund and Accel. The company offers competitive salary, meaningful equity, private medical/dental/vision coverage, contributory pension, 25 days holiday plus bank holidays, and life/critical illness insurance. Note: Certain roles may require additional eligibility checks due to UK, US, and international export control regulations applicable to the technology. Requirements: - Significant leadership experience across information security, IT operations, and infrastructure, ideally as CISO, CIO, VP IT & Security, or equivalent in a technology organization - Proven experience developing and executing IT, infrastructure, and cybersecurity strategies in complex, high-growth environments - Strong technical expertise across enterprise IT, cloud infrastructure, networking, systems administration, identity management, endpoint management, and cybersecurity - Demonstrated experience building, scaling, and managing IT infrastructure and service delivery functions including enterprise applications and employee IT support - Experience protecting sensitive intellectual property, proprietary technologies, engineering systems, or R&D environments - Comprehensive understanding of cybersecurity risk management, governance, compliance, and frameworks such as ISO 27001, NIST CSF, and SOC 2 - Proven ability to establish resilient, scalable, secure infrastructure including disaster recovery, business continuity, monitoring, and incident management - Experience managing IT and security budgets, technology procurement, vendor relationships, and third-party service providers - Excellent leadership, communication, and stakeholder management skills with ability to collaborate with senior executives and technical engineering teams - Experience within AI infrastructure, high-performance, or deep-tech environments highly advantageous

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