1 to 25 of 120 Firewall Jobs in London

on information security, cybersecurity and data security, including a wide scope, such as physical security of computer rooms, operating system level security of Windows and Linux, network security of firewall and other security devices, application security both development and testing phrase, terminal security, backup security, third party and supply chain security of IT service provider.Liaison with the Head Office, Security More ❯

on information security, cybersecurity and data security, including a wide scope, such as physical security of computer rooms, operating system level security of Windows and Linux, network security of firewall and other security devices, application security both development and testing phrase, terminal security, backup security, third party and supply chain security of IT service provider.Liaison with the Head Office, Security More ❯

needed basis. An ability to work with security in mind in approach to all fixes. Desirable Hands on experience with administration of Secure Web Gateway technologies (Web Filter, Web Firewall, IPS/IDS) keeping our systems up to date with installation of software/firmware updates in line with vendor releases whilst maintaining service availability for our staff and clients. More ❯

Microsoft cloud technologies to protect enterprise environments against evolving cyber threats. Key Responsibilities: Network Architecture & Security: Design and implement secure network infrastructures using Azure networking components (VNETs, NSGs, Azure Firewall, VPN Gateway, etc.). Integrate M365 security features (Defender for Office 365, Conditional Access, Secure Score) into enterprise environments. Conduct network segmentation and zero-trust architecture planning. Cloud & Hybrid Environments More ❯

Microsoft cloud technologies to protect enterprise environments against evolving cyber threats. Key Responsibilities: Network Architecture & Security: Design and implement secure network infrastructures using Azure networking components (VNETs, NSGs, Azure Firewall, VPN Gateway, etc.). Integrate M365 security features (Defender for Office 365, Conditional Access, Secure Score) into enterprise environments. Conduct network segmentation and zero-trust architecture planning. Cloud & Hybrid Environments More ❯

the physical and technical implementation of the networking and security elements that will be deployed at Cabinet Office. . Maintain and enhance the network infrastructure services including switching, routing, Firewall by providing expertise and creating opportunities for others to share and practise your knowledge. . Carry out the patching and configuration of; Switches, Firewalls, WLAN infrastructure. . Work with cloud More ❯

security practices (IPSec, SSL-VPN, NAT, GRE). Hands-on experience with cloud infrastructure operations and troubleshooting customer tech stacks. Familiarity with SIEM tools, vulnerability management, malware analysis, and firewall configurations. Ability to communicate complex technical solutions to a wide range of audiences, both technical and non-technical. Skilled in Python, JSON, YAML, Bash, or other relevant scripting languages. More ❯

Our client is looking to bring on an Infrastructure & Cloud Engineer. Key responsibilities include 1st and 2nd line support, with an occasional requirement for 3rd line support , encompassing the following key responsibilities: 1st Line Support : Addressing and resolving routine cloud More ❯

Windows desktop, including all levels of troubleshooting. Extensive experience working with cloud, server, desktop, network and telephony providers. Good knowledge of networking - Layer2/3, dynamic routing, MPLS and firewall management. Good knowledge of IT security practices and the implementation of tools that provide MFA, DLP, proxy services, encryption, event logging and alerting. Able to provide input to, and technical More ❯

troubleshooting Flexera agents across AWS and Azure environments. Apply infrastructure-as-code practices (Terraform, PowerShell) to automate deployment and standardise infrastructure operations. Overcome advanced networking challenges (DNS, static routes, firewall rules, security protocols) to enable agent-to-server connectivity. Work across legacy and bespoke environments , ensuring agent deployment succeeds in inconsistent architectures. Contribute to estate-wide architectural planning covering containerised More ❯

Proficiency in PC software like Microsoft WIN 10/11, Microsoft 365, Windows Server, AD administration, Virtualization, Cloud(AWS, Azure), Office/Mailer, Switch/Router/IPT, and Firewall products. Excellent written and verbal communication skill in English. Japanese is nice to have. Ability to investigate and source answers to various email and telephony enquiries about technical issues. We More ❯

Access switches, Cisco/Juniper firewalls, Dell servers. Deploy and maintain VMware ESXi and StorMagic SvSAN Lead setup of racks, cabling, power, and dual ISP circuits. Administer VLANs, subnets, firewall policies, and Purdue-model security zoning. Manage AD, DNS, DHCP, SIEM, Cisco ISE, SolarWinds, and Splunk Oversee remote access, VPN tunnels (SUREWAN 3rd parties), and endpoint security tools (Cisco DUO More ❯

Strong technical foundation equivalent to CCNP or JNCIP-ENT level Solid experience troubleshooting Layer 2/3 protocols, OSPF and BGP Hands-on experience with at least one enterprise firewall: Palo Alto , Fortigate , or Cisco ASA Proven ability to perform root cause analysis and resolve complex network issues Experience in a Managed Services Provider (MSP) environment Familiarity with cloud networking More ❯

Strong technical foundation equivalent to CCNP or JNCIP-ENT level Solid experience troubleshooting Layer 2/3 protocols, OSPF and BGP Hands-on experience with at least one enterprise firewall: Palo Alto , Fortigate , or Cisco ASA Proven ability to perform root cause analysis and resolve complex network issues Experience in a Managed Services Provider (MSP) environment Familiarity with cloud networking More ❯

API for security automation Familiarity with M365 security, Zero Trust models, and Microsoft Information Protection Knowledge of compliance tools and frameworks (e.g. GDPR, ISO 27001, NIS2) Experience with Azure Firewall, NSGs, ASGs, and endpoint management Qualifications Microsoft Certified: Azure Security Engineer Associate (AZ-500) Microsoft Certified: Cybersecurity Architect Expert (SC-100)or working toward it One or more of:MS More ❯

and performance tuning. Candidate Profile Essential Skills & Experience: Proven experience in data centre networking. Hands-on with MPLS, VPLS, and cross-connects. Strong routing protocol knowledge (OSPF, BGP). Firewall configuration and troubleshooting. Expertise with Mellanox and Meraki switches. VLAN segmentation, link aggregation, QoS strategies. Desirable Skills: Familiarity with automation tools (Ansible, Terraform). Experience with software-defined storage (Cloudian More ❯

and performance tuning. Candidate Profile Essential Skills & Experience: Proven experience in data centre networking. Hands-on with MPLS, VPLS, and cross-connects. Strong routing protocol knowledge (OSPF, BGP). Firewall configuration and troubleshooting. Expertise with Mellanox and Meraki switches. VLAN segmentation, link aggregation, QoS strategies. Desirable Skills: Familiarity with automation tools (Ansible, Terraform). Experience with software-defined storage (Cloudian More ❯

the time. Executive presence and ability to manage high-stakes conversations and escalations. Advantages: Experience with and Gainsight. Technical depth in TCP/IP v4, VRF, AWS VPC, routing, firewall policies, LDAP, and Radius. French, Spanish or Italian fluency. AlgoSec is an Equal Opportunity Employer (EEO), committed to creating a friendly, diverse and inclusive company culture. More ❯

projects in a highly regulated environment. The Role - As part of the security engineering team, you'll be: Delivering on the security portfolio, with a focus on SASE and firewall estates. Working within a SAFe Agile framework, participating in sprints and stand-ups. Managing and tracking workloads via Jira. Triaging customer requirements into actionable deliverables. Acting as an escalation engineer More ❯

Job Title: Firewall Engineer Location: London or Gloucester (Hybrid) Contract Type: 6 months, Inside IR35 Day Rate: £360 The Role Were looking for a skilled Firewall Engineer with active UK SC Clearance to join on a 6-month contract. Youll be responsible for firewall rule optimisation, configuration, and transformation activities across complex IT and OT environments. This role requires strong … Fortinet, Cisco ASA, Check Point) and the ability to collaborate with technical and non-technical stakeholders to maintain compliance and security best practice. Key Responsibilities Configure, implement, and manage firewall solutions across multi-vendor environments Review, optimise, and enforce firewall rules and policies Support migrations and replacement projects for firewall infrastructure Monitor traffic and logs, respond to incidents, and troubleshoot … performance issues Apply patches, firmware updates, and maintain HA firewall clusters Ensure compliance with frameworks such as ISO 27001, NIST, PCI-DSS Automate rule management/reporting where possible (Ansible, Python, APIs) Required Experience Strong hands-on experience configuring Palo Alto, Fortinet, Cisco ASA, Check Point firewalls Skilled in firewall rule tuning and optimisation Background in firewall migration projects and More ❯

analysis through telemetry, analytics, and runbooks. Define and monitor SLAs, SLOs, and KPIs related to cloud connectivity experience. Security, Compliance & Governance: Ensure secure design and enforcement of network segmentation, firewall rules, and encryption policies. Collaborate with ISRM, cloud, and infrastructure teams to maintain compliance and risk posture. Operationalize zero-trust principles within the cloud network design. Collaboration & Stakeholder Engagement: Work More ❯

Job Title: IT Infrastructure Engineer Contract Type: 12-Month Contract (Outside IR35) Location: Hybrid working, London Start Date: ASAP We are seeking a highly skilled IT Infrastructure Engineer to join a large organisation on a 12-month contract basis. This More ❯

for security standards are followed. Support project and operational teams with complex infrastructure issues. Essential Skills and Experience: Expertise in Windows, Linux Operating Systems Proficiency in load balancing and firewall configurations. Strong knowledge of network security principles and technologies. Demonstrated experience in large-scale, complex IT environments. Desirable Skills: Awareness of Project Management Processes. Basic understanding of Specific Security Applications. More ❯

for security standards are followed. Support project and operational teams with complex infrastructure issues. Essential Skills and Experience: Expertise in Windows, Linux Operating Systems Proficiency in load balancing and firewall configurations. Strong knowledge of network security principles and technologies. Demonstrated experience in large-scale, complex IT environments. Desirable Skills: Awareness of Project Management Processes. Basic understanding of Specific Security Applications. More ❯

Inside IR35) Location: Fully Remote (UK-based) We’re seeking a skilled WAF & Application Security Specialist to join a key client engagement. This role focuses on enhancing Web Application Firewall (WAF) capabilities across multiple platforms, with a strong emphasis on efficacy testing, rule creation, and tuning. Key Responsibilities: Design and implement custom WAF rules to address security gaps Conduct detailed More ❯