1,106 Infrastructure Security jobs in the United Kingdom

Network Infrastructure & Security ManagernWe’re looking for an experienced Infrastructure & Security Manager to lead our IT operations and drive cybersecurity initiatives. This is a hands-on leadership role where you’ll combine deep technical expertise with strategic oversight to ensure the stability, security, and scalability of our IT systems.

Base pay range

Network Infrastructure & Security Manager | Hybrid

What You’ll Do

Implement and enforce cybersecurity best practices (ISO 27001, CE+, CIS benchmarks).

Oversee endpoint protection, vulnerability management, penetration testing, and incident response.

Ensure compliance with

GDPR

and other regulatory standards.

Manage and secure

Office 365, Exchange Online, and SharePoint .

Administer

firewalls, VPNs, and zero-trust security models .

Lead IT security for network upgrades and enterprise application deployments.

Drive

backup, disaster recovery (DR), and business continuity strategies .

Evaluate and implement tools/automation to strengthen IT operations.

Develop technical documentation and deliver user training.

10+ years

in IT infrastructure & security management within enterprise environments.

Proven experience in troubleshooting, patching, and vulnerability remediation.

Strong knowledge of

EDR, SIEM, MFA, PKI, DLP , and Nessus VAPT.

Networking

(Layer 2/3, VLANs, VPNs, routing)

Backup & disaster recovery solutions

Skilled in supporting end users with a proactive, solution-oriented mindset.

Preferred Certifications

Microsoft Certified Professional

AWS Solutions Architect (Associate/Professional)

VMware Certified Professional (VCP)

Seniority level

Not Applicable

Employment type

Full-time

Job function

Information Technology

Industries

IT Services and IT Consulting

London Area, United Kingdom — This role is based in hybrid mode.

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Infrastructure Security Architect

London, Docklands (Hybrid)

£100,000 - £110,000 per annum + annual discretionary bonus

On behalf of an industry Leading financial services organisation, I am seeking an experienced Infrastructure Architect additionally with a background in Security Architecture.

The Infrastructure Architect will possess broad knowledge in Cloud Infrastructure, Platforms and Cyber Security with a focus on capability enhancements and continuous improvement. This role involves collaborating with cross-functional teams to understand business requirements, providing technical leadership, and ensuring the design meets architectural principles and security standards.

The organisation offers hybrid working with a non-negotiable 2 days a week in their London office, therefore you must be within reasonable commuting distance to London.

Responsibilities:

• Author High Level Solution Design, Solutions Overview and Conceptual Architectures.
li>Design and architect solutions based on technical and business requirements.
• Develop and document architecture blueprints and best practices.
• Act as a lead Architecture on projects
• Contribute to the development & management of Infrastructure Strategy
• Contribute to the continuous improvement of Architecture within the business
• Contribute to product roadmaps & reference architectures.
• Provide technical guidance to team members and stakeholders.

Skills / Experience required:

• At least 8 years’ experience in an Infrastructure Architecture capacity additionally with experience in authoring Cyber Security Architecture.
< i>Experience in a regulated financial services environment (banking / insurance preferred)
• Experience in IaC (nice to have)
• Automation experience highly advantageous – e.g. Ansible / Jenkins (alternatives considered).
< i>Knowledge of networking design and principles in both public cloud and traditional data center
• Knowledge of hybrid cloud architectures.
• Ability to assess and recommend third-party tools and services to complement AWS offerings.
• Experience with cloud security solutions and services
• Ability to communicate solutions to other stakeholders
• Broad knowledge of Networks & Security
• Identify & recommend opportunities for efficiency.
• Stay updated on new features and capabilities & best practices.
• Ability to deal with ambiguity and manage diversity.
• Share knowledge with the team and contribute to the organization's learning culture.

Infrastructure Security Architect

London, Docklands (Hybrid)

£100,000 - £110,000 per annum + annual discretionary bonus

On behalf of an industry Leading financial services organisation, I am seeking an experienced Infrastructure Architect additionally with a background in Security Architecture.

The Infrastructure Architect will possess broad knowledge in Cloud Infrastructure, Platforms and Cyber Security with a focus on capability enhancements and continuous improvement. This role involves collaborating with cross-functional teams to understand business requirements, providing technical leadership, and ensuring the design meets architectural principles and security standards.

The organisation offers hybrid working with a non-negotiable 2 days a week in their London office, therefore you must be within reasonable commuting distance to London.

Responsibilities:

• Author High Level Solution Design, Solutions Overview and Conceptual Architectures.
li>Design and architect solutions based on technical and business requirements.
• Develop and document architecture blueprints and best practices.
• Act as a lead Architecture on projects
• Contribute to the development & management of Infrastructure Strategy
• Contribute to the continuous improvement of Architecture within the business
• Contribute to product roadmaps & reference architectures.
• Provide technical guidance to team members and stakeholders.

Skills / Experience required:

• At least 8 years’ experience in an Infrastructure Architecture capacity additionally with experience in authoring Cyber Security Architecture.
< i>Experience in a regulated financial services environment (banking / insurance preferred)
• Experience in IaC (nice to have)
• Automation experience highly advantageous – e.g. Ansible / Jenkins (alternatives considered).
< i>Knowledge of networking design and principles in both public cloud and traditional data center
• Knowledge of hybrid cloud architectures.
• Ability to assess and recommend third-party tools and services to complement AWS offerings.
• Experience with cloud security solutions and services
• Ability to communicate solutions to other stakeholders
• Broad knowledge of Networks & Security
• Identify & recommend opportunities for efficiency.
• Stay updated on new features and capabilities & best practices.
• Ability to deal with ambiguity and manage diversity.
• Share knowledge with the team and contribute to the organization's learning culture.

OverviewnInfrastructure Security Architect

London, Docklands (Hybrid)

£100,000 - £110,000 per annum + annual discretionary bonus

On behalf of an industry Leading financial services organisation, I am seeking an experienced Infrastructure Architect additionally with a background in Security Architecture.

The Infrastructure Architect will possess broad knowledge in Cloud Infrastructure, Platforms and Cyber Security with a focus on capability enhancements and continuous improvement. This role involves collaborating with cross-functional teams to understand business requirements, providing technical leadership, and ensuring the design meets architectural principles and security standards.

The organisation offers hybrid working with a non-negotiable 2 days a week in their London office, therefore you must be within reasonable commuting distance to London.

Responsibilities

Author High Level Solution Design, Solutions Overview and Conceptual Architectures.

Design and architect solutions based on technical and business requirements.

Develop and document architecture blueprints and best practices.

Act as a lead Architecture on projects

Contribute to the development & management of Infrastructure Strategy

Contribute to the continuous improvement of Architecture within the business

Contribute to product roadmaps & reference architectures.

Provide technical guidance to team members and stakeholders.

Skills / Experience

At least 8 years' experience in an Infrastructure Architecture capacity additionally with experience in authoring Cyber Security Architecture.

Experience in a regulated financial services environment (banking/insurance )

Experience in IaC (nice to have)

Automation experience highly advantageous - eg Ansible/Jenkins (alternatives considered).

Knowledge of networking design and principles in both public cloud and traditional data centre

Knowledge of hybrid cloud architectures.

Ability to assess and recommend third-party tools and services to complement AWS offerings.

Ability to communicate solutions to other stakeholders

Broad knowledge of Networks & Security

Identify & recommend opportunities for efficiency.

Stay updated on new features and capabilities & best practices.

Ability to deal with ambiguity and manage .

Share knowledge with the team and contribute to the organization's learning culture.

Experience with cloud security solutions and services

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Company Description

Legal & General (L&G)

is a leading UK financial services group and major global investor.nWe've been safeguarding people's financial futures since 1836, and strive to build a better society, while improving the lives of our customers and creating value for shareholders.nWe are one of the world's largest asset managers and provide powerful asset origination capabilities. Together, these underpin our retirement and protection solutions: we are an international player in pension risk transfer, in UK and US life insurance, and in UK workplace pensions and retirement income.nOur Group Functions provide the services that all areas of the business need. This requires a talented and diverse team behind the scenes, who enable everyone at L&G to do what they do best.nJoining us means helping to improve the lives of our customers and contributing to the success of the business every day.nJob Description

We have an incredible opportunity for an Infrastructure Security Analyst to join in either London or Hove!nYou'll help safeguard the business through reviewing the security posture and configuration of our network security controls, identifying weaknesses and driving remediation activity. If you are looking for a varied role where you will get involved in vulnerability management, penetration testing, endpoint security, web filtering and firewalls then this could be the perfect next challenge for you!nWhat you'll be doing:nAnalysing data from and identifying security improvements to other Infrastructure Security components such as Web Application Firewalls, IDS/IPS, Web Filters, E-Mail Security, and DLP. Making recommendations to improve the configuration/design of the solutionnConducting firewall configuration security reviews; analysing configuration and logs from Firewalls and related networking devices to identify opportunities for security improvements in configuration and design. This will involve understanding the environment, collaborating with relevant technical and application teams and making recommendations for changes, facilitating their implementation with SMEsnSupporting the maintenance of the Firewall and Network assurance application; task monitoring of configuration, data collection and analysis jobsnAssisting the Vulnerability Manager in the identification, prioritisation and remediation of security vulnerabilities across the L&G groupnSupporting team mailboxes and queues; contributing to the management of the team's support queues, and mailboxes, providing 1st line support of tickets and queries.nKeeping up to date on threat actor approaches and methods, making recommendations to detect and defend against these activitiesnQualifications

Who we're looking for:nStrong understanding of Firewall and related network security technologiesnStrong understanding of networks and network protocols and the risk posed by related security vulnerabilitiesnKnowledge/experience in information protection, data leakage protection, and cloud securitynKnowledge of the threat landscape, particularly exploited vulnerabilitiesnPrior industry experience relevant to this role covering Firewall assurance, and network security, preferably using relevant security frameworks and toolingnExperience with vulnerability management, and vulnerability scanning tools would be a huge plus!nExperience in managing complex stakeholder relationshipsnIt would also be great if you have relevant certifications and/or accreditations relevant to this position (CISSP/CISM etc)nWhatever your role, we reward performance and behaviour with a package that looks after all the things that are important to you. Here are some of the benefits we offer:nThe opportunity to participate in our annual, performance -related bonus plan and valuable share schemesnGenerous pension contributionnLife assurancenHealthcare Plan (permanent employees only)nAt least 25 days holiday, plus public holidays, 26 days after 2 years' service. There's also the option to buy and sell holidaynCompetitive family leavenParticipate in our electric car scheme, which offers employees the option to hire a brand-new electric car through tax efficient salary sacrifice (permanent employees only)nThere are the many discounts we offer - both for our own products and at a range of high street stores and onlinenIn 2023, some of our workspaces were redesigned. Our offices are great spaces to connect and collaborate and have your wellbeing at the heartnAdditional Information

At L&G, we believe it's possible to generate positive returns today while helping to build a better future for all.nIf you join us, you'll be part of a welcoming, inclusive culture, with opportunities to collaborate with people of diverse backgrounds, views, and experiences. Guided by leaders with integrity who care about your future and wellbeing. Empowered through initiatives which support people to develop their careers and excel.nWe care passionately about outcomes rather than attendance and are therefore open to discussing all kinds of flexible working options including part-time, term-time and job shares. Although some roles have limited flexibility due to customer demand, we accommodate requests when we can.nIt doesn't matter if you don't meet every single criterion in this advert. Instead, think about what you excel at and what else you can bring in terms of strengths, potential and connection to our purpose.nVideos To Watch

OverviewnWe have an incredible opportunity for an Infrastructure Security Analyst to join in either London or Hove!

You'll help safeguard the business through reviewing the security posture and configuration of our network security controls, identifying weaknesses and driving remediation activity. If you are looking for a varied role where you will get involved in vulnerability management, penetration testing, endpoint security, web filtering and firewalls then this could be the perfect next challenge for you!

Responsibilities

Analysing data from and identifying security improvements to other Infrastructure Security components such as Web Application Firewalls, IDS/IPS, Web Filters, E-Mail Security, and DLP. Making recommendations to improve the configuration/design of the solution

Conducting firewall configuration security reviews; analysing configuration and logs from Firewalls and related networking devices to identify opportunities for security improvements in configuration and design. This will involve understanding the environment, collaborating with relevant technical and application teams and making recommendations for changes, facilitating their implementation with SMEs

Supporting the maintenance of the Firewall and Network assurance application; task monitoring of configuration, data collection and analysis jobs

Assisting the Vulnerability Manager in the identification, prioritisation and remediation of security vulnerabilities across the L&G group

Supporting team mailboxes and queues; contributing to the management of the team’s support queues, and mailboxes, providing 1st line support of tickets and queries

Keeping up to date on threat actor approaches and methods, making recommendations to detect and defend against these activities

Qualifications

Strong understanding of Firewall and related network security technologies

Strong understanding of networks and network protocols and the risk posed by related security vulnerabilities

Knowledge/experience in information protection, data leakage protection, and cloud security

Knowledge of the threat landscape, particularly exploited vulnerabilities

Prior industry experience relevant to this role covering Firewall assurance, and network security, preferably using relevant security frameworks and tooling

Experience with vulnerability management, and vulnerability scanning tools would be a huge plus

Experience in managing complex stakeholder relationships

Relevant certifications and/or accreditations (e.g., CISSP/CISM) would be beneficial

Benefits

The opportunity to participate in our annual, performance-related bonus plan and valuable share schemes

Generous pension contribution

Life assurance

Healthcare Plan (permanent employees only)

At least 25 days holiday, plus public holidays, 26 days after 2 years’ service. There’s also the option to buy and sell holiday

Competitive family leave

Electric car salary-sacrifice scheme (permanent employees only)

Discounts on our products and at high street stores and online

Wellbeing-focused office spaces with collaboration opportunities

Additional InformationnAt L&G, we believe it's possible to generate positive returns today while helping to build a better future for all.

If you join us, you’ll be part of a welcoming, inclusive culture, with opportunities to collaborate with people of diverse backgrounds, views, and experiences. Guided by leaders with integrity who care about your future and wellbeing. Empowered through initiatives which support people to develop their careers and excel.

We care about flexibility and support a range of working options, including part-time, term-time and job shares where possible.

It doesn’t matter if you don’t meet every single criterion in this advert. Think about what you excel at and what else you can bring in terms of strengths, potential and connection to our purpose.

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Head of Network, Infrastructure & SecuritynAt Third Space, we’re entering an exciting phase of growth. As we scale our operations and expand our footprint, we’re building out our internal capabilities that will support and sustain that journey. To help lead this evolution, we’re hiring a Head of Network, Infrastructure & Security.

This is a strategic and hands-on position, reporting directly to our IT Director. You’ll play a key role in shaping the future of our infrastructure and cybersecurity capabilities, ensuring our platforms are secure, resilient, and ready to support the next phase of growth.

What you'll do:

Lead the development of our infrastructure and cybersecurity strategy, aligned with business goals.

Oversee the design and performance of our enterprise network and core IT services.

Own our information security framework, including Cyber Essentials accreditation and audit readiness.

Introduce automation and AI-enhanced tooling to drive operational efficiency and proactive service management.

Develop and maintain disaster recovery and business continuity plans.

Collaborate across IT and business teams, providing technical mentorship and incident support.

Manage third-party vendors and ensure service quality, compliance, and risk mitigation.

What you'll bring:

Extensive experience in senior infrastructure and/or cybersecurity roles.

Strong knowledge of Microsoft Azure, enterprise networking, and cloud architecture.

Proven track record in achieving and maintaining security certifications.

Experience in business continuity planning, DR testing, and IT risk management.

A strategic mindset with the ability to be hands-on when needed.

Excellent communication and stakeholder management skills.

What we offer:

The opportunity to shape and lead a core function in a growing, purpose-driven organisation.

A collaborative, forward-thinking environment with a strong growth trajectory.

Hybrid working model with flexibility and autonomy.

A chance to work with a passionate team committed to excellence.

If you're ready to take ownership of infrastructure and security at a business that’s scaling fast and thinking big, we’d love to hear from you.

Apply now or reach out for a confidential conversation.

Seniority level:

Mid-Senior level

Employment type:

Full-time

Job function:

Information Technology

Industries:

Wellness and Fitness Services

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Closing Date:

Sunday 31st August 2025nLocation(s):

Birmingham, Bristol, London and Manchester

Flexible WorkingnThe BT group operates a 3 together, 2 wherever working model. This means you are required to be at your contractual location 3 days a week with 2 flexible days per week.

The Scope

Since forming as a unified security organisation in 2014, we have grown to a circa £600m business today. We have strong plans and ambition to grow to £1bn before 2030. Our goal is to make BT the standout company within the security space across SMB, Corporate and Public sector customers.

The key purpose of this pivotal role is to lead on BT Security's Network Access Control (NAC) Solutions that sit within the wider Managed Infrastructure Products and Services portfolio to support BT Security's revenue growth ambitions.

An important element of this role is to lead on operational excellence and consistency across the network security portfolio overall to support growth across all of BT Business channels in the UK.

What you'll be doing

Taking the lead on identifying future opportunities for the infrastructure security portfolio.nConsistently looking to grow the market opportunity for Infrastructure security defining the channels that we will sell in (including Digital marketplaces & public sector).nOwn the customer experience for Infrastructure security vendors to ensure it is consistent across the vendors and the channels.nOwning the definition of future capabilities that the vendor specific product managers can then consistently implement.nExperience needed to be successful in the role:

Previous experience managing the end-to-end product lifecycle from concept to market launch. This involves idea generation and then development through to market launch using agile methodologies.nA strong understanding of the MSP and firewall Cyber Security Market & how this differs across business channels.nExtensive experience of engaging and influencing a wide variety of stakeholders both externally (Customers) and internally at the highest level (C suite/Director Level).nKnowledge of the processes that underpin customer service delivery to ensure product/service can be delivered both quickly and cost effectively.nProven ability to translate customer and market demand into product development decisions, requirements and user storiesnThe skills you'll need

Product LifecyclenProduct StrategynUser Experience DesignnStakeholder ManagementnPlatform/ Technology Architecture & Feasibility

Benefits

Annual on target bonus 10% (based on both personal and company performance)nBT Pension scheme; minimum 5% employee contribution, BT contribution 10%n25 days annual leave + 8 bank holidays with the option to buy up to one week's work of your contracted hours. This will also increase with service.n2 weeks carer's leavenFrom January 2025, all parents welcoming a new child will be eligible for our new Family Leave policy. You will receive 18 weeks at full pay, eight weeks at half pay and 26 weeks at the statutory rate. It is for all parents, no matter how your family is made.nEnhanced women's health support: including help with menopause symptoms, cancer screenings, period care and more.nLife Assurance (4 x life cover pay)nExclusive colleague discounts on our latest and greatest BT broadband packagesn50% off EE mobile pay monthly or SIM only plans and 50% discount for friends and family on EE SIM only plans.nMy Discounts gives colleagues access to unbeatable savings on everyday purchases at hundreds of retailers.nDiscounted EE TV including TNT Sport and the NOW Entertainment membership.nOption to join the Healthcare Cash Plan or other benefits such as dental insurance, gym memberships etc.nVolunteering days so you can give back to your local community.nBrand new electric vehicle salary sacrifice arrangement, known as 'My EV.'n24/7 private virtual GP appointments for UK colleaguesnWith over 175 years of heritage, BT is now the flagship business brand of BT Group. We've brought together our best people and capabilities into a B2B powerhouse serving 1.2 million business customers internationally.

We're a global leader for secure connectivity and collaboration platforms for businesses of all shapes and sizes, from big household names and government departments, right through to sole traders and new start-ups. But it's not just the technology that matters, it's what it can do to help them build stronger, smarter, more secure businesses.

We value diversity and inclusion and believe in making a positive impact. We connect for good by championing digital inclusion and equipping people, businesses, and communities with digital skills to thrive.

As a member of our team, you will be part of an organisation that celebrates difference, fosters innovation and provides you with opportunities to be your best. With millions of businesses relying on us daily, joining BT means you can be part of a diverse and multi-skilled team that makes a significant impact to society.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you're a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.

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Occasional travel to South East / Midlands (Travel expensed)nUp to £93k basicnCar allowance + BenefitsnWe’re looking for a hands-on, ambitious infrastructure/security leader to take steer of a growing team and help drive a major group-wide transformation.nYou’ll join a multi-industry business operating across transport, manufacturing, technology, and engineering, working at a group level to consolidate infrastructure and security across multiple companies into one cohesive environment.nA good move for an Infrastructure/Security Lead who’s ready to move into a Head of role, take ownership, and shape strategy while staying close to the tech.nWhat you’ll be doing

Owning implementation, consolidation, and vulnerability management across the groupnLeading a team (3 direct reports by year-end) — mentoring, developing, and embedding best practicenOverseeing infrastructure, EUC, platform, cloud, and building securitynPartnering with stakeholders across multiple business units to understand systems and improve visibilitynDriving improvements in security tooling, processes, and responsenVulnerability management tools (e.g. Rapid7, Microsoft Defender suite)nCore enterprise security toolsetsnNetworking, cloud infrastructure, and EUC environmentsnYou'll have

Experience as a team lead or manager (formal or informal) with direct reports or leadership responsibilitynStrong grounding in infrastructure and security — ideally having moved from networking/cloud into securitynHands-on experience with vulnerability management tools and security platformsnProgression: Step into a Head of role with mentoring from an experienced Group Infrastructure DirectornInfluence: Work at a group level across multiple industriesnSeniority level

Mid-Senior levelnEmployment type

Full-timenLocation

Surrey, England, United KingdomnAdditional context

We’re looking to consolidate infrastructure and security across multiple companies into one cohesive environment. This is a group-level leadership role focused on shaping strategy while remaining close to the technology.

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