IT Infrastructure Operations and Security Lead in London

IT Infrastructure Operations and Security Lead in London

London Full-Time 85000 - 95000 £ / year (est.) No working from home possible
Onyx-Conseil

At a Glance

  • Tasks: Lead a small IT team and manage global technology operations and security.
  • Company: Dynamic insurance firm based in the heart of London.
  • Benefits: Competitive salary, hybrid work model, and comprehensive benefits package.
  • Other info: Opportunity for career growth in a fast-paced, evolving tech environment.
  • Why this job: Make a real impact on IT security and infrastructure in a global setting.
  • Qualifications: 5+ years in enterprise-level infrastructure management and strong technical skills.

The predicted salary is between 85000 - 95000 £ per year.

This role requires excellent management of a small team in IT along with managing stakeholders and vendors. You must be hands-on technically in IT Infrastructure. The IT Operational Platform and Security Lead is responsible for overseeing the organisation’s IT operations, ensuring the stability, continuity, security, and efficiency of its technology platforms within a global commercial insurance environment.

While Microsoft technologies (Microsoft 365, Azure, Exchange Online) form a core part of the infrastructure, the role also encompasses broader enterprise IT systems, multi-layered networking, security, data management, and third-party platforms that support global business operations and the associated applications estate.

Security, Compliance & Risk Management

  • Define and enforce cloud security policies, identity management, and access controls to protect systems, networks, and data.
  • Oversee the adoption of zero-trust security principles to enhance protection across cloud platforms.
  • Manage identity and access management (IAM) in a cloud-first environment, including Azure AD, MFA, Conditional Access, SSO, and Privileged Access Management (PAM).
  • Lead threat monitoring, detection, and response using cloud-native security solutions such as Microsoft Defender, Sentinel, and SIEM platforms.
  • Ensure compliance with cloud security frameworks and regulatory requirements (ISO 27001, NIST, GDPR, SOC 2, FCA).
  • Conduct regular security risk assessments, penetration tests, and vulnerability management across cloud services.
  • Oversee endpoint security, cloud network and API security for robust protection across all assets.
  • Define, manage and maintain accurate DR and BCP plans for the infrastructure area with biannual tests.

Technical Experience

  • Microsoft Azure Infrastructure design and administration, including topology, Azure networking, services, and component knowledge.
  • Microsoft AD (Entra), Server and SQL experience.
  • O365 administration and design.
  • Global Software Patching and estate management via Intune.
  • Firewall (Azure, CheckPoint and Cloudflare), DNS, VPN, WIFI and Local Area Network design & administration experience.
  • Software Defined Networking (Cisco, Meraki, Versa).

Key Skills

  • Strong experience managing Microsoft 365 (Exchange, SharePoint, Teams), Azure cloud infrastructure, and security tools such as Microsoft Defender and Sentinel.
  • Deep knowledge of security frameworks (ISO 27001, NIST, CIS), compliance requirements (GDPR, SOC 2), and risk management best practices.
  • Expertise in Azure AD, MFA, Conditional Access, SSO, and Privileged Access Management (PAM).
  • Ability to detect, respond to, and mitigate cyber threats using SIEM, endpoint security, and vulnerability management tools.
  • Understanding of firewalls, VPNs, SD-WAN, DNS security, endpoint protection, and cloud security controls.
  • Experience implementing ITIL-based service management, automating operational tasks, and optimising service delivery.
  • Ability to ensure IT systems are highly available, resilient, and fit for purpose, with a strong focus on business continuity and disaster recovery.
  • Experience managing third-party IT vendors, MSPs, and SaaS providers, ensuring service levels, performance, and cost-effectiveness.
  • Ability to lead technology projects, system upgrades, and platform migrations, ensuring smooth execution and minimal business disruption.
  • Strong analytical mindset to identify inefficiencies, automate workflows, and enhance security controls.
  • Capable of making informed decisions and resolving complex IT issues in a fast-paced environment.
  • Ability to communicate effectively with technical and non-technical stakeholders, including senior leadership and business users.
  • Comfortable working in an evolving technology landscape, with a proactive and security-first approach.

Summary of Skills Required

  • Global Enterprise level Infrastructure Management position for the last 5 years.
  • Buy-before-build mentality and demonstrable migration of legacy VM-based estates to SaaS and Azure Cloud services platforms.
  • Global Operational team management experience (human resources, strategic delivery, operational service, audit lead for infra, budget…).
  • Key 3rd party operational infrastructure vendor management – management of managed service partners as a team extension globally, as well as service/solution delivery partners.
  • Migration of legacy VM-based estates to SaaS and cloud services platforms.
  • Legacy infra tech to Azure knowledge/experience.
  • Prior to the last 5 years in enterprise management of a global estate/user-base, a demonstrable technical infrastructure engineering level background, working on Windows Server, AD, SQL environments, firewalls/SDWAN, and networks (WAN and/or LAN).

The Client is based in the City of London. This is a hybrid position with 3 days in the office. The salary for this role will be in the range £85K – £95K plus Benefits.

IT Infrastructure Operations and Security Lead in London employer: Onyx-Conseil

As an IT Infrastructure Operations and Security Lead, you will thrive in a dynamic and supportive work environment that prioritises employee growth and development. Our company offers competitive salaries, comprehensive benefits, and a hybrid working model that promotes work-life balance, all while being situated in the vibrant City of London. Join us to be part of a forward-thinking team that values innovation, collaboration, and a proactive approach to security in a global commercial insurance setting.

Onyx-Conseil

Contact Details:

Onyx-Conseil Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land IT Infrastructure Operations and Security Lead in London

Tip Number 1

Network like a pro! Attend industry meetups, webinars, or local tech events. It's all about making connections that could lead to your next big opportunity.

Tip Number 2

Show off your skills! Create a personal project or contribute to open-source initiatives that highlight your expertise in Microsoft Azure and security management. This can really set you apart from the crowd.

Tip Number 3

Prepare for interviews by practising common questions related to IT operations and security. Use the STAR method to structure your answers and showcase your problem-solving skills effectively.

Tip Number 4

Don't forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, we love seeing candidates who are proactive about their job search.

We think you need these skills to ace IT Infrastructure Operations and Security Lead in London

IT Infrastructure Management
Microsoft 365 Administration
Azure Cloud Infrastructure
Identity and Access Management (IAM)
Cloud Security Policies
Threat Monitoring and Incident Response
Security Frameworks (ISO 27001, NIST, GDPR)

Some tips for your application 🫡

Tailor Your CV:Make sure your CV is tailored to the IT Infrastructure Operations and Security Lead role. Highlight your experience with Microsoft technologies, security frameworks, and team management. We want to see how your skills align with what we're looking for!

Showcase Your Technical Skills:Don’t hold back on showcasing your technical expertise! Mention your hands-on experience with Azure, IAM, and threat management tools. We love seeing candidates who can demonstrate their technical prowess in a clear and concise way.

Be Clear and Concise:When writing your application, keep it clear and to the point. Use bullet points where possible to make it easy for us to read. We appreciate straightforward communication, especially when it comes to your qualifications and experiences.

Apply Through Our Website:Remember to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it helps us keep everything organised on our end!

How to prepare for a job interview at Onyx-Conseil

Know Your Tech Inside Out

Make sure you brush up on your knowledge of Microsoft Azure, Microsoft 365, and security tools like Microsoft Defender. Be ready to discuss specific projects where you've implemented these technologies, as well as any challenges you faced and how you overcame them.

Showcase Your Leadership Skills

Since this role involves managing a small team, be prepared to share examples of how you've successfully led teams in the past. Highlight your experience in stakeholder management and vendor relations, and demonstrate your ability to communicate effectively with both technical and non-technical audiences.

Understand Security Frameworks

Familiarise yourself with key security frameworks such as ISO 27001 and GDPR. Be ready to discuss how you've applied these frameworks in previous roles, particularly in relation to risk management and compliance. This will show that you take security seriously and understand its importance in IT operations.

Prepare for Scenario-Based Questions

Expect scenario-based questions that assess your problem-solving skills and decision-making abilities. Think about past incidents where you had to respond to cyber threats or manage IT service continuity. Use the STAR method (Situation, Task, Action, Result) to structure your answers clearly.