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About the Role
We are seeking an Infrastructure & Security Engineer to manage the security and infrastructure foundations supporting Oritain's expansion. This senior, hands-on role involves securing cloud, identity, and network environments, maturing our compliance program (ISO 27001, Cyber Essentials, NIST, CMMC), and leading the secure adoption of AI. You will shape plans, bring teams together, and deliver solutions, making a significant impact early on.
Responsibilities
- Identify, track, and remediate vulnerabilities.
- Administer and improve Microsoft Defender and Microsoft Sentinel.
- Integrate infrastructure and security tooling for monitoring and detection.
- Coordinate and technically lead security incident responses.
- Drive compliance and accreditation work for ISO 27001, Cyber Essentials, NIST, and CMMC.
- Manage control coverage and evidence collection using Vanta.
- Contribute to the development of the Information Security Management System (ISMS).
- Conduct third-party risk assessments.
- Design, build, secure, and improve cloud and on-premises services.
- Deliver identity and access solutions with Microsoft Entra ID, Conditional Access, and role-based access control.
- Administer Azure infrastructure including VNets, routing, VPNs, and site-to-site gateways.
- Design network segmentation using VLANs, firewall rules, and access controls.
- Build and troubleshoot SD-WAN technologies.
- Support wired and wireless networking, including RADIUS and certificate-based authentication.
- Lead the secure adoption of AI tools like Microsoft Copilot and Claude.
- Implement data loss prevention (DLP) and Purview controls.
- Define AI guardrails, governance standards, and usage policies.
- Assess risks such as data leakage and regulatory exposure.
- Apply AI and automation to enhance infrastructure and security workflows.
Requirements
- Senior, hands-on experience delivering and supporting IT infrastructure and security.
- Experience in an organization of similar size with global reach, or larger.
- Track record of taking a broad security objective, defining the approach, and delivering it end-to-end with minimal direction.
- Strong working knowledge of Microsoft Entra ID, identity and access management, and secure authentication.
- Practical experience with Azure and Microsoft 365 infrastructure, including Microsoft Defender and Sentinel.
- Solid networking fundamentals, including VLANs, switches, firewalls, routing, and VPNs.
- Experience supporting security incident response and vulnerability management.
- Working knowledge of security frameworks such as ISO 27001, NIST, and Cyber Essentials.
- Experience supporting audits, ISMS activities, or compliance tooling such as Vanta.
- Clear communication skills.
- Confidence working with, influencing, and supporting both technical and non-technical colleagues.
- Energy, curiosity, and a sense of ownership.
- Openness to share ideas, take feedback, and keep learning.
Skills
- Microsoft Entra ID
- Identity and Access Management
- Secure Authentication
- Azure
- Microsoft 365
- Microsoft Defender
- Microsoft Sentinel
- Networking Fundamentals
- VLANs
- Switches
- Firewalls
- Routing
- VPNs
- Security Incident Response
- Vulnerability Management
- ISO 27001
- NIST
- Cyber Essentials
- Vanta
- AI Tooling
- Microsoft Copilot
- Claude
- Data Loss Prevention (DLP)
- Purview
- Zero Trust Architectures
- Advanced Security Monitoring
- Detection Engineering
- SIEM Tuning
- Automation
- Scripting
- SASE
- Cloud-based SD-WAN Platforms
Location
- London
Work Type
- Permanent - Full Time
- Hybrid working (minimum 3 days per week in our Farringdon office)
Experience Level
- Senior
Benefits
- 35 days paid leave, inclusive of public holidays
- Birthday off
- Enhanced Maternity and Paternity Leave
- Life insurance
- Healthcare Cash Plan
- Employee Assistance Programme (EAP)
- Pension
- Monthly Wellbeing Allowance
- Breakfast, snacks, Friday lunch and barista coffee in the office
- Learning portal with over 100,000 assets for professional development
About the Company
- Oritain is a global leader in forensic origin verification of products and raw materials.
- We have offices in London, Auckland, Dunedin, Paris, Singapore and Washington D.C.
- Our vision is to be the source of truth in global supply chains.
- Our mission is to harness cutting edge science, data, and specialised services to create a community of origin verified buyers and suppliers, protecting our people and planet.
- We empower the world’s leading brands to make positive changes across their supply chain; ensuring product integrity, meeting regulatory demands, and reducing the risk of fraud and unethical sourcing, creating real change in our world.
Equal Opportunity
- We believe great teams are built from different perspectives, experiences, and ways of thinking. We welcome applications from everyone and encourage you to bring your whole self to the process. If there’s anything we can do to support you, including any reasonable adjustments at any stage of hiring, please let the team know.