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Head of IT & Security

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Dexory Using

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IT - Administration

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Job Description:

As Head of IT & Security at Dexory, you will own and drive the strategy, execution and governance of all internal IT services and security/compliance for the organisation. You’ll ensure that our employees, systems and infrastructure are supported, secure, resilient and aligned with the rapid growth and innovation required in a fast-moving technical scale-up. Working across teams – from engineering to operations, HR to commercial – you’ll deliver seamless IT onboarding, systems management, vendor sourcing, infrastructure build-out and regulatory compliance. You’ll be the go-to leader for all things IT and security, enabling the business to scale confidently and securely.

Job Responsibility:

  • Define and execute the IT strategy in alignment with business objectives: infrastructure (on-premises, cloud, hybrid), end-user computing, collaboration tools, service desk and lifecycle management
  • Define and own the IT security & compliance strategy: policies, controls, risk frameworks, audits, vendor assessment, incident response, identity & access management and data governance
  • Manage the IT / Security budget and vendor contracts, ensuring cost-effectiveness and service delivery for employees across multiple teams and countries
  • Lead the IT onboarding and off-boarding processes: ensure every new team member is provisioned with the right systems, access rights, collaboration tools, security training, and that existing team members are properly de-provisioned
  • Ensure the operational stability of the IT estate: network, servers, endpoints, cloud services, backups, disaster recovery, patching, monitoring – while maintaining high service levels across the business
  • Collaborate cross-functionally with Heads of Departments (Operations, Engineering, HR, Finance, Product) to ensure their systems and workflows are supported, secure and scalable
  • Build, lead and mentor the IT & security team and managed service partners – drive a culture of service, reliability, security awareness and proactive innovation
  • Monitor and report on key metrics/KPIs: uptime, service desk performance, security incident rate, audit/compliance status, cost per user, vendor performance
  • Lead incident response and business continuity planning: coordinate investigation of security incidents, implement corrective actions and ensure resilience of systems and processes
  • Stay up-to-date with current and emerging technologies, threats and regulatory requirements relevant to our sector and growth stage
  • recommend improvements, migrations and innovations.

Requirements:

  • Proven experience in a senior IT leadership role (Head of IT, IT Director or equivalent) in a high-growth mid-sized technology company (100–500 employees) or scaling organisation
  • Strong background managing IT infrastructure for a high-technology company (servers, workstations, network, cloud, endpoints), service delivery, onboarding/off-boarding, vendor management and IT budgeting
  • Solid experience in IT security and compliance: risk assessment, incident management, identity & access management, policy formulation, and experience with relevant standards (e.g. ISO 27001, SOC1/SOC2, GDPR)
  • Excellent stakeholder management and cross-functional collaboration skills – able to translate business needs into IT/security solutions and influence senior leadership
  • Strong team leadership and people development experience: building and managing teams (internal and via partners) across IT and security disciplines
  • Excellent verbal and written communication skills
  • ability to present to senior management, articulate trade-offs and make strategic decisions
  • A proactive, results-driven mindset, comfortable in a fast-paced, evolving environment.
What we offer:
  • Private healthcare via Bupa with 24/7 medical helpline
  • Life insurance
  • Income protection
  • Pension: 4+% employee with option to opt into salary exchange, 5% employer
  • Employee Assistance Programme - mental wellbeing, financial and legal advice/support
  • 25 holidays per year
  • Full meals onsite in Wallingford
  • Fun team events on and offsite, snacks of all kinds in the office

Additional Information:

Job Posted:
February 16, 2026

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