22 of 22 Security Hardening Jobs in the South East

Security Engineer

Hiring Organisation
Pontoon
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Security Engineer 6-Month Contract | £700-£800 per day (Umbrella) Hybrid Working | Midlands-based office visit approximately once per month The Opportunity We're supporting a leading organisation operating within a highly regulated and nationally significant environment as they continue to build and mature a new Microsoft cloud security estate. This is a hands-on Security Engineer position suited to someone who enjoys improving security posture, implementing controls and solving security challenges in an evolving environment. You'll play a key role in strengthening the organisation's cyber security capabilities while helping prepare ...

Senior Infrastructure Engineer

Hiring Organisation
First Military Recruitment
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Senior Infrastructure Engineer on behalf of one of our clients. We are seeking an Engineer with strong Azure, Windows Server, Linux, networking and endpoint security experience to support enterprise infrastructure platforms across on-premises and cloud environments. The role will focus on deploying and supporting XDR agents, Azure … Windows and Linux servers. Configure Azure Monitor, Log Analytics Workspaces, Data Collection Rules (DCRs), dashboards and alerting solutions. Monitor infrastructure performance, availability, capacity and security events. Support operational monitoring and reporting across enterprise environments. Deploy, configure, upgrade and maintain XDR/EDR agents across Windows and Linux server environments. ...

Senior Infrastructure Engineer

Hiring Organisation
First Military Recruitment Ltd
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Contract
Senior Infrastructure Engineer on behalf of one of our clients. We are seeking an Engineer with strong Azure, Windows Server, Linux, networking and endpoint security experience to support enterprise infrastructure platforms across on-premises and cloud environments. The role will focus on deploying and supporting XDR agents, Azure … Windows and Linux servers. Configure Azure Monitor, Log Analytics Workspaces, Data Collection Rules (DCRs), dashboards and alerting solutions. Monitor infrastructure performance, availability, capacity and security events. Support operational monitoring and reporting across enterprise environments. Deploy, configure, upgrade and maintain XDR/EDR agents across Windows and Linux server environments. ...

Senior Security Engineer

Hiring Organisation
ASSA ABLOY
Location
Olney, Buckinghamshire, United Kingdom
Salary
£ 70 K
Senior Security Engineer Do you have the ability to become the subject matter expert in implementation of security throughout the software delivery life cycle and a drive to grow your skills in a collaborative environment? Became a part of the ASSA ABLOY Global Solutions Key and Asset Management … business unit and enjoy a culture that empowers you to build a career you can be proud of.What you would do as our Senior Security EngineerAs a Senior Security Engineer you will be responsible for evolving the software development lifecycle to support a secure-by-default design that ...

Security & Network Engineer - 12 months Fixed term

Location
Maidenhead, England, United Kingdom
developing superior products and meeting high customer expectations. We view our winning culture as a competitive advantage that powers our growth. We're seeking Security & Network Engineer who can architect and operationalise a secure, compliant, and agile network and infrastructure backbone. You'll own the design and governance … network, security policies and infrastructure architecture across hybrid cloud and on-premises environments. More than a technician, you're a strategist: someone who shapes policy, educates stakeholders, and mentors teams to embed security thinking into every decision—without strangling velocity. Reporting to the Head of Infrastructure, this role ...

Security & Network Engineer - 12 months Fixed term

Hiring Organisation
Techtronic Industries - Europe HQ
Location
Maidenhead, Berkshire, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
powerful brand portfolio includes MILWAUKEE, RYOBI, AEG - recognized worldwide for their deep heritage and innovative product platforms of superior quality. We're seeking Security & Network Engineer who can architect and operationalise a secure, compliant, and agile network and infrastructure backbone. You'll own the design and governance … network, security policies and infrastructure architecture across hybrid cloud and on-premises environments. More than a technician, you're a strategist: someone who shapes policy, educates stakeholders, and mentors teams to embed security thinking into every decision—without strangling velocity. Key Responsibilities Network Architecture & Design: Lead design ...

Infrastructure Engineer

Hiring Organisation
VIQU IT Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 - £600.00 per day
operational tasks. VMware vSphere – Administration of enterprise virtual environments. Hyper-V advantageous. Active Directory – Administration of AD, DNS, DHCP and Group Policy. Server Security – Patching, OS upgrades, security hardening and vulnerability remediation. Infrastructure Support – Troubleshooting business-critical enterprise infrastructure. Desirable: Microsoft Azure, MECM/SCCM, Microsoft Intune … Manage Windows Server, Active Directory, DNS, DHCP, Group Policy and VMware vSphere. Automation & Improvement: Develop PowerShell scripts to automate tasks and improve efficiency. Troubleshooting & Security: Resolve infrastructure issues and deliver patching, upgrades, hardening and vulnerability remediation. Projects & Support: Support migrations, upgrades and refreshes; maintain documentation, follow ITIL processes ...

Infrastructure Windows Engineer - SC Cleared

Hiring Organisation
Lorien
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
infrastructure is treated as a strategic capability. You'll work alongside highly skilled engineering teams, supporting business-critical platforms while contributing to modernisation, automation, security, and cloud transformation initiatives. The Opportunity As an Infrastructure Windows Engineer, you will be responsible for the design, support, optimisation, and continuous improvement … Microsoft infrastructure estate. Operating within a complex and highly regulated environment, you'll play a key role in ensuring the stability, security, and availability of core services that underpin critical banking operations. This role offers exposure to large-scale enterprise technologies, infrastructure transformation programmes, and industry-leading security ...

Platform Engineer

Hiring Organisation
Circle Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£526.00 - £629.00 per day
Windows and Linux servers. Configure Azure Monitor, Log Analytics Workspaces, Data Collection Rules (DCRs), dashboards, and alerting solutions. Monitor infrastructure performance, availability, capacity, and security events. Support operational monitoring and reporting across enterprise environments. Deploy, configure, upgrade, and maintain XDR/EDR agents across Windows and Linux server environments. … Perform large-scale security agent rollouts using automated deployment methods. Troubleshoot agent installation, connectivity, onboarding, and performance issues. Ensure endpoint security agents remain compliant and operational across the server estate. Support security operations teams with endpoint protection and monitoring requirements. Install, configure, administer, and maintain Windows Server ...

Information Security Analyst

Location
Farnborough, England, United Kingdom
role in maintaining the trust of our Owners and ensuring the seamless delivery of world-class aviation services. YOUR MISSION Investigate and respond to security alerts and incidents, acting as an escalation point for events requiring deeper technical analysis. Improve detection by tuning alerts, analysing false positives and recommending … monitoring use cases across endpoint, identity, email, network and cloud services. Strengthen resilience by supporting vulnerability management, security hardening, playbooks and automation across on-premises and cloud environments. Support European compliance by gathering evidence, maintaining records and contributing to risk assessments, audits and regulatory activities, including EASA Part ...

Senior Systems Administrator

Location
Slough, England, United Kingdom
with deep experience configuring, managing, and troubleshooting hardware and software. You're fluent in MacOS, Windows, Google Workspace, Microsoft O365, WiFi networks, and current security protocols. You'll provide direct support to team members while driving long-term operational IT projects. Position Responsibilities Infrastructure & Project Leadership Own and drive … long-term IT infrastructure projects from scoping through delivery including network upgrades, cloud migrations, security hardening, and tooling improvements Develop and maintain technical roadmaps aligned with business goals, collaborating with leadership to prioritize initiatives Design, implement, and continuously improve automated provisioning and systems management pipelines (CI/ ...

Server Engineer

Hiring Organisation
VIQU IT Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 - £600.00 per day
administering virtual server environments. Hyper-V experience would be advantageous. Microsoft Infrastructure: Strong practical knowledge of Active Directory, DNS, DHCP and Group Policy. Server Security & Lifecycle: Experience with Windows patch management, operating system upgrades, security hardening and vulnerability remediation. Infrastructure Support: Proven experience troubleshooting and supporting business ...

Commvault SME

Hiring Organisation
Experis
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Contract
focus on preparation and execution for a Windows 11 migration project. Group Policy Management: Implement, maintain, and audit Group Policy Objects (GPOs) to enforce security and configuration settings across the Windows environment, including CIS hardening. Citrix Published Application Management: Oversee the design, deployment, patching, hardening, and reporting … collaborate effectively with other IT teams. Troubleshooting and Support: Provide expert-level troubleshooting for complex issues related to the Citrix and Windows environment. Security and Compliance: Implement and manage security hardening guidelines across all supported platforms and systems. Required Skills and Experience: Proven experience working ...

Senior IT Systems Administrator (Linux & HPC)

Location
Leatherhead, England, United Kingdom
Senior IT Systems Administrator (Linux & HPC).**The Opportunity:**The Senior IT Systems Administrator (Linux & HPC) is responsible for the administration, maintenance, security and operational reliability of Linux-based enterprise and high-performance computing platforms. The role will provide hands-on technical ownership across Linux operating systems, HPC compute … repositories, filesystems, logging and scheduled services.* Automate repeatable administration using shell scripting and configuration-management or orchestration tooling.* Monitor Linux performance, availability, capacity and security, and resolve complex operating-system and application integration issues.* Maintain build standards, technical documentation, operational procedures and recovery runbooks.**HPC Platform & Workload Scheduling*** Operate ...

Full Stack Engineer - Must be DV Cleared

Hiring Organisation
VIQU IT Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
platform engineers so models, pipelines and infrastructure land as one product rather than three. Improving the day to day: CI/CD, observability, security hardening, documentation. Sitting in front of customers and partners and turning what they need into something buildable. What You Will Need Python. Serious commercial … delivered against customer deadlines that do not slip, and you get methodical rather than frantic when something breaks. Secure environment fit. Happy following strict security and handling procedures, and getting to UK customer sites when the programme needs you there. Communication. Clear with engineers and with customers ...

Senior Infrastructure Engineer

Hiring Organisation
Adecco
Location
Newbury, Berkshire, United Kingdom
Employment Type
Full-Time
Salary
£650.00 per day
only apply if you hold DV Clearance** About Our Client: An esteemed organisation in the public services sector, dedicated to enhancing infrastructure resilience and security, is seeking a talented Senior Infrastructure Engineer. This is a fantastic opportunity for a professional eager to make a significant impact by deploying cutting … standards during upgrades and patches. - Engage in migration testing and service validation. Monitoring Platform Infrastructure: - Provision new virtual servers for network monitoring applications. - Apply security hardening and patching in line with best practises. - Validate platform readiness alongside local ICT resources. Public Key Infrastructure (PKI) Design and Deployment: - Design ...

Senior Infrastructure Engineer

Hiring Organisation
Adecco
Location
Newbury, Berkshire, United Kingdom
Employment Type
Temporary
Salary
£650/day
only apply if you hold DV Clearance** About Our Client: An esteemed organisation in the public services sector, dedicated to enhancing infrastructure resilience and security, is seeking a talented Senior Infrastructure Engineer. This is a fantastic opportunity for a professional eager to make a significant impact by deploying cutting … standards during upgrades and patches. - Engage in migration testing and service validation. Monitoring Platform Infrastructure: - Provision new virtual servers for network monitoring applications. - Apply security hardening and patching in line with best practises. - Validate platform readiness alongside local ICT resources. Public Key Infrastructure (PKI) Design and Deployment: - Design ...

Senior Linux & HPC Systems Engineer

Location
Leatherhead, England, United Kingdom
CycleCloud. You will work with engineering and scientific users to diagnose issues spanning compute, storage, and networking. The role emphasizes hands-on ownership, patching, security hardening, and on-call support to maintain high availability across complex systems. #J-18808-Ljbffr ...

Commvault & Citrix Infra SME: Risk Analysis & Reporting

Location
Milton Keynes, England, United Kingdom
week, with rate up to £598 p/d Umbrella inside IR35. The role covers risk analysis reporting, Citrix and Windows infrastructure, and security hardening. Candidates should have Citrix VAD, PVS, Hypervisor experience and CIS-compliant design capabilities, plus PowerShell scripting. #J-18808-Ljbffr ...

Kernel Developer

Location
Brighton, England, United Kingdom
implement kernel core subsystems including scheduling, memory management, and IPC. Ensure low-latency real-time performance and efficient resource usage. Collaborate closely with driver, security, and network teams to integrate secure, telemetry-free modules. Conduct code reviews and kernel-level debugging to maintain stability. Design kernel interfaces that … Deep understanding of Unix-like OS kernel architectures. Proficiency in low-level debugging and performance profiling. Strong C and assembly programming skills. Experience with security hardening and real-time operating systems. Experience with FreeBSD or OpenBSD internals. Understanding of hardware abstraction layer design. Tools & Technologies Languages: C, Assembly ...

Linux/DevOps SME - DV Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Basingstoke, Hampshire, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650/day
issues. Develop and maintain CI/CD pipelines and associated tooling. Support infrastructure-as-code and configuration management practices. Contribute to platform resilience, availability, security and performance. Work closely with engineering, development, security and operations teams. Provide technical documentation, standards and best-practice guidance. Mentor and support other … similar. Ansible. Terraform. Cloud platform experience. Red Hat Enterprise Linux or equivalent. Experience within UK Government/MOD/Defence environments. Experience working with security-hardened Linux environments. Relevant Linux, DevOps or cloud certifications. What We're Looking For We're looking for a genuine hands-on SME , rather ...

Linux SME - DV Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Reading, Berkshire, Basingstoke, Hampshire, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
issues. Develop and maintain CI/CD pipelines and associated tooling. Support infrastructure-as-code and configuration management practices. Contribute to platform resilience, availability, security and performance. Work closely with engineering, development, security and operations teams. Provide technical documentation, standards and best-practice guidance. Mentor and support other … similar. Ansible. Terraform. Cloud platform experience. Red Hat Enterprise Linux or equivalent. Experience within UK Government/MOD/Defence environments. Experience working with security-hardened Linux environments. Relevant Linux, DevOps or cloud certifications. What We're Looking For We're looking for a genuine hands-on SME , rather ...