Senior Infrastructure Specialist - Network Security & Assurance

End Date

Thursday 29 May 2025

Salary Range

£70,929 - £78,810

We support flexible working – click here for more information on flexible working options

Flexible Working Options

Hybrid Working, Job Share

Job Description Summary

The Senior Infra Specialist will hold accountability for design, implementation, maintenance, security and support of infrastructure resources. They will work without the need for supervision and own and direct the tasks of more junior Infra Specialists and Infra Engineers. They will focus on Platform or Lab level objectives and may manage a sub-set of their team’s technical products

Job Description

Join us at Lloyds Banking Group as a Network Security Senior Infrastructure Specialist and play a pivotal role in protecting the UK’s largest digital bank. This opportunity sits within our Network Security Prevention, Detection, Compliance and Assurance team – part of the wider Network Security & Traffic Management Lab – which manages critical controls like Intrusion Prevention/Detection Systems (IPS/IDS) and Network Detection & Response (NDR) across our on-prem and multi-cloud environment. In this role, you’ll lead the technologies that enforce our network security policies and keep our systems compliant in a dynamic, evolving threat landscape. It’s a chance to drive automation in network security, influence future security architecture, and ensure we meet internal controls and external regulatory requirements – all while working in an inclusive, collaborative team that values your growth and ideas.

As a Network Security Senior Infrastructure Specialist, you will:

• Lead network policy compliance and automation: Design, build, and maintain tools that enforce network security policies and automate firewall rule changes, ensuring our firewall rulesets remain clean, efficient, and compliant with best practices.
• Monitor and assure security compliance: Implement mechanisms to continuously track network security compliance across our cloud and on-prem environments, providing evidence and reports to satisfy internal audit and external regulators.
• Drive security improvements: Proactively identify gaps or risks in network security posture and work with architects to shape new policies or architectural enhancements. Your insights will help influence future network security strategy and frameworks.
• Collaborate and innovate: Work closely with multi-functional teams in Cyber Security and IT to integrate compliance tooling and processes, improving our overall security monitoring and response capabilities. You’ll also evaluate emerging solutions (such as compliance-as-code) to keep us at the forefront of automation.
• Mentor and guide others: Act as a technical leader within the team, sharing your expertise. You’ll mentor junior engineers and influence a culture of continuous improvement, ensuring the whole team grows its network security skills.

Why Lloyds Banking Group

Lloyds Banking Group is on a mission to help Britain prosper, and cyber security sits at the heart of our transformation. We’re investing in our people, data, and technology like never before – investing billions to evolve how 26 million customers bank with us. When you join us, you’ll become part of a driven team that's building the bank of the future. We’re growing with purpose and embracing innovation to meet the ever-changing needs of our customers. Join us on our journey, and you’ll have a tangible impact on securing the financial services of tomorrow while continuing to develop your own skills and career.

What you'll bring

Candidates for this role should have:

• Extensive network/security experience: 5+ years (or equivalent) in network security or infrastructure roles, with deep technical knowledge of security boundary devices such as firewalls and intrusion detection/prevention systems.
• Firewall policy expertise: Good understanding of firewall rule sets and network security policy standard practices – you know how to design and review rules that are effective, compliant, and minimize risk.
• Automation & tooling skills: Hands-on experience with automation workflows and policy administration tools (for example, AlgoSec, Skybox, Tufin, FireMon or similar), or exposure to “compliance-as-code” frameworks. You’re comfortable using technology to simplify complex processes.
• Compliance and controls knowledge: Familiarity with regulatory standards and certification frameworks (e.g. ISO 27001, PCI-DSS) and experience participating in audits or maintaining key security controls. You understand how to translate regulatory requirements into practical network security measures.
• Leadership and collaboration: Demonstrable ability to lead initiatives and mentor junior technical staff. You enjoy sharing knowledge, guiding colleagues, and building an inclusive team environment. You communicate effectively and can influence partners when refining security policies or processes.

(Don’t worry if you don’t tick every box – if you have most of these skills and a passion for learning, we’d love to hear from you.)

About working for us

At Lloyds Banking Group, we’re creating a truly inclusive workplace where everyone can thrive. We celebrate diversity in all its forms and believe that a wide range of backgrounds and perspectives makes us stronger. Whoever you are, wherever you come from, you’ll find an open and supportive environment that empowers you to be your best. We’ve set bold targets for diversity in our senior roles, we’ve pioneered inclusive initiatives (from our menopause support policy to our “Working with Cancer” program), and we’re committed to being flexible to the needs of our colleagues. If you require any reasonable adjustments to participate in the application or interview process, let us know and we’ll be happy to accommodate.

We also offer a wide-ranging benefits package to reward and encourage you, which includes:

• A generous pension contribution of up to 15%
• An annual bonus award, subject to Group performance
• Share schemes including free shares
• Benefits you can adapt to your lifestyle, such as discounted shopping
• 30 days’ holiday, with bank holidays on top
• A range of wellbeing initiatives and generous parental leave policies

Ready to make a difference? Apply today and join us in building the secure, innovative bank of the future. Let’s grow together and help Britain prosper, safely and securely.

At Lloyds Banking Group, we're driven by a clear purpose; to help Britain prosper. Across the Group, our colleagues are focused on making a difference to customers, businesses and communities. With us you'll have a key role to play in shaping the financial services of the future, whilst the scale and reach of our Group means you'll have many opportunities to learn, grow and develop.

We keep your data safe. So, we'll only ever ask you to provide confidential or sensitive information once you have formally been invited along to an interview or accepted a verbal offer to join us which is when we run our background checks.  We'll always explain what we need and why, with any request coming from a trusted Lloyds Banking Group person. 

We're focused on creating a values-led culture and are committed to building a workforce which reflects the diversity of the customers and communities we serve. Together we’re building a truly inclusive workplace where all of our colleagues have the opportunity to make a real difference.