Infrastructure Security Architect in London
Infrastructure Security Architect

Infrastructure Security Architect in London

London Full-Time 84000 - 196000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Define and evolve security architecture for hybrid infrastructure in a fast-paced trading environment.
  • Company: Leading global proprietary trading firm with a focus on innovation and security.
  • Benefits: Competitive salary up to £140,000 plus 20% bonus and comprehensive benefits.
  • Why this job: Join a high-performing team and make a real impact on critical trading systems.
  • Qualifications: Experience as a Security Architect in financial services and strong cloud security knowledge.
  • Other info: Dynamic role with opportunities for growth in a mission-critical environment.

The predicted salary is between 84000 - 196000 £ per year.

A leading global proprietary trading firm is seeking an Infrastructure Security Architect to define and evolve defence-in-depth security architecture across a complex hybrid estate spanning on-premise data centres and Microsoft Azure.

This role is ideally suited to a hands-on Security Architect with deep infrastructure roots across VMware, Active Directory, Windows Server, and enterprise cloud security, who is comfortable operating across both architectural governance and engineering implementation within a high-availability trading environment.

The Role

As Infrastructure Security Architect, you will sit within a small, high-performing Security Architecture & Engineering function responsible for securing critical trading systems and enterprise platforms. You will collaborate closely with Infrastructure, DevOps, Platform, and Engineering teams to ensure all new and existing solutions align with defined security standards, regulatory frameworks, and architectural guardrails. This is a design-led role with hands-on depth — ideal for someone who has grown from infrastructure engineering into enterprise security architecture.

Key Responsibilities

  • Define and maintain security blueprints, reference architectures, and guardrails across:
  • Hybrid infrastructure (multi-datacentre VMware estate + Azure IaaS/PaaS/SaaS)
  • Identity platforms (Entra ID / Azure AD hybrid)
  • Privileged Access and role-based access control models
  • Secure connectivity between internal trading platforms and external counterparties
  • Review and sign off HLDs and LLDs across infrastructure and application projects
  • Conduct structured security risk assessments using frameworks such as NIST, CIS Controls, STRIDE, OWASP and MITRE ATT&CK
  • Provide go-live security assurance, identifying risks, remediation controls, and risk acceptance where appropriate
  • Establish and maintain governance processes to ensure security architecture aligns with enterprise standards and regulatory requirements (ISO27001, GDPR)
  • Skills & Experience

    • Proven experience operating as an Infrastructure Security Architect, Security Architect, or senior-level Security Engineer within financial services, trading, or other high-availability, low-latency environments.
    • Strong architectural expertise across hybrid infrastructure, including:
    • Enterprise network security (segmentation, firewalls, secure connectivity, zero-trust principles)
    • Multi-datacentre environments (VMware, Windows Server, Active Directory, DR design)
    • Cloud security architecture, particularly Microsoft Azure (IaaS, PaaS, SaaS)
    • Identity & Access Management (Entra ID / Azure AD, MFA, Conditional Access, PAM)
  • Experience defining and reviewing High-Level and Low-Level Designs (HLD/LLD), setting security standards, and providing architectural governance across infrastructure and cloud initiatives.
  • Strong understanding of security frameworks and best practice controls (e.g., NIST, CIS, ISO) and ability to align architecture to regulatory requirements.
  • Experience shaping security tooling strategy across infrastructure layers (SIEM, vulnerability management, endpoint security, PAM, DLP), including vendor evaluation and roadmap input.
  • Ability to operate at both deep technical and strategic levels — influencing infrastructure, engineering, and senior stakeholders on long-term security direction.
  • Comfortable working in fast-paced, mission-critical environments where resilience, performance, and risk management are critical.
  • Package

    • Up to £140,000 base salary
    • Up to 20% performance-related bonus
    • Comprehensive benefits package

    Infrastructure Security Architect in London employer: Intec Select

    As a leading global proprietary trading firm based in London, we pride ourselves on fostering a dynamic and collaborative work environment where innovation thrives. Our employees benefit from competitive salaries, performance-related bonuses, and a comprehensive benefits package, all while working alongside a talented team dedicated to securing critical trading systems. With ample opportunities for professional growth and development, this is an ideal place for those looking to make a meaningful impact in the fast-paced world of finance and technology.
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    Contact Detail:

    Intec Select Recruiting Team

    StudySmarter Expert Advice 🤫

    We think this is how you could land Infrastructure Security Architect in London

    ✨Network Like a Pro

    Get out there and connect with people in the industry! Attend meetups, conferences, or even online webinars. Building relationships can lead to job opportunities that aren’t even advertised.

    ✨Show Off Your Skills

    Don’t just talk about your experience; demonstrate it! Create a portfolio or GitHub repository showcasing your projects and achievements in infrastructure security. This gives potential employers a tangible sense of what you can do.

    ✨Ace the Interview

    Prepare for technical interviews by brushing up on key concepts related to hybrid infrastructure and security frameworks. Practice common interview questions and scenarios, so you can confidently showcase your expertise when it counts.

    ✨Apply Through Our Website

    When you find a role that excites you, apply directly through our website! It shows your enthusiasm and ensures your application gets the attention it deserves. Plus, we love seeing candidates who are proactive!

    We think you need these skills to ace Infrastructure Security Architect in London

    Infrastructure Security Architecture
    Hybrid Infrastructure Security
    VMware
    Microsoft Azure (IaaS, PaaS, SaaS)
    Active Directory
    Identity & Access Management (Entra ID / Azure AD)
    Security Risk Assessments
    NIST Framework
    CIS Controls
    ISO27001
    GDPR Compliance
    High-Level and Low-Level Design (HLD/LLD)
    Security Tooling Strategy
    Zero-Trust Principles
    Communication with Senior Stakeholders

    Some tips for your application 🫡

    Tailor Your CV: Make sure your CV is tailored to the Infrastructure Security Architect role. Highlight your experience with hybrid infrastructures, cloud security, and any relevant frameworks like NIST or CIS. We want to see how your skills align with what we're looking for!

    Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about security architecture and how your background makes you a perfect fit for our team. Keep it concise but impactful – we love a good story!

    Showcase Relevant Projects: If you've worked on projects that involved security blueprints or risk assessments, make sure to mention them. We’re keen to see real-world examples of your work, especially in high-availability environments like trading systems.

    Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining our team at StudySmarter!

    How to prepare for a job interview at Intec Select

    ✨Know Your Security Frameworks

    Make sure you brush up on key security frameworks like NIST, CIS, and OWASP. Be ready to discuss how you've applied these in past roles, especially in high-availability environments. This shows you not only understand the theory but can also implement it effectively.

    ✨Demonstrate Hands-On Experience

    Since this role requires a hands-on approach, be prepared to share specific examples of your work with VMware, Azure, and identity management systems. Highlight any projects where you defined security blueprints or conducted risk assessments, as this will showcase your practical skills.

    ✨Align with Business Goals

    Understand the company's trading environment and how security architecture supports their business objectives. Be ready to discuss how you can align security measures with operational needs, ensuring that security doesn't hinder performance but enhances it.

    ✨Prepare for Technical Questions

    Expect deep technical questions about infrastructure security, cloud architecture, and governance processes. Brush up on your knowledge of secure connectivity and access control models, and be ready to explain your thought process in designing secure systems.

    Infrastructure Security Architect in London
    Intec Select
    Location: London

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