This enables secure, scalable, and resilient communication between internal services-supporting high availability and enforcing strong security boundaries. In addition, we architect, build, and maintain the systems behind Ingress loadbalancing and intelligent traffic management, including a custom fleet of software load balancers, cloud-based loadbalancing infrastructure, DNS, and CDN services.Slack's infrastructure is More ❯
complex network infrastructure, primarily focused on A10 Networks Application Delivery Controllers (ADCs) and security solutions. This role demands a hands-on engineer with a solid understanding of high availability, loadbalancing, and Layer 4-7 traffic management, ideally within secure, mission-critical environments. Key Responsibilities: Configure, deploy, and manage A10 Thunder Series devices (ADC, CGNAT, SSLi, etc.) Perform … working with A10 Networks (Thunder ADC, CGNAT, SSL Insight) In-depth understanding of networking protocols TCP/IP, HTTP/S, DNS, SSL/TLS, BGP, OSPF Experience with loadbalancing, application delivery, and traffic optimisation Active SC (Security Check) or DV (Developed Vetting) clearance is essential More ❯
Stack Developer: Proven experience in full stack development using C#, .NET, and modern JavaScript frameworks. Strong understanding of web application architecture and high-availability environments. Hands-on experience with loadbalancing and request routing technologies, ideally NetScaler or similar. Proficiency in managing and deploying web applications across multiple servers. Good knowledge of SQL Server and database performance optimisation. … and maintain scalable web-based applications using C#, .NET, and JavaScript frameworks. Support and enhance the organisation’s high-availability environment, ensuring performance and reliability. Work with NetScaler for loadbalancing, SSL offloading, and application-level routing logic. Manage and maintain the organisation’s source control systems and version management. Collaborate with internal teams to design, test, and More ❯
Coventry, West Midlands, United Kingdom Hybrid/Remote Options
Stackstudio Digital Ltd
MPLS, STP, VXLAN, DNS/DHCP). Familiarity with SDN and SD-WAN architectures (Cisco Viptela, Meraki, VMware NSX, Fortinet). Design and implementation experience with VPNs, remote access, loadbalancing, firewalls, proxies (F5, Palo Alto, Forcepoint, Cisco ASA). Strong knowledge of wireless networking design and optimisation. Security integration: Zero Trust, segmentation, NAC; familiarity with ISO More ❯
West Midlands (County), Birmingham, United Kingdom
Sherborne Talent Solutions
deployment and optimisation of SD-WAN and SASE/SSE technologies (e.g., Netskope, Zscaler, Cisco Umbrella). Manage and maintain secure network architectures including firewalls, VPNs, switching, routing, and loadbalancing (HAProxy). Monitor, analyse, and optimise network performance and security posture. Implement security policies aligned with ISO 27001, NIST, and CIS frameworks. Produce detailed documentation for configurations More ❯
Stevenage, Hertfordshire, England, United Kingdom Hybrid/Remote Options
MBDA
and advanced QoS exposure. Cisco ISE (NAC/SGT), Cisco DNA Centre/SDA, or Cisco ACI familiarity. Automation/scripting (Ansible, Python) for repeatable changes and evidence collection. Loadbalancing (e.g. F5), secure email/web gateways, or SD-WAN exposure. Certifications: CCNA/CCNP (Enterprise or Security), PCNSA/PCNSE, Check Point CCSA/CCSE, VMware More ❯
Stevenage, Hertfordshire, South East, United Kingdom Hybrid/Remote Options
MBDA
and advanced QoS exposure. Cisco ISE (NAC/SGT), Cisco DNA Centre/SDA, or Cisco ACI familiarity. Automation/scripting (Ansible, Python) for repeatable changes and evidence collection. Loadbalancing (e.g. F5), secure email/web gateways, or SD-WAN exposure. Certifications: CCNA/CCNP (Enterprise or Security), PCNSA/PCNSE, Check Point CCSA/CCSE, VMware More ❯
Bristol, Avon, South West, United Kingdom Hybrid/Remote Options
MBDA
and advanced QoS exposure. Cisco ISE (NAC/SGT), Cisco DNA Centre/SDA, or Cisco ACI familiarity. Automation/scripting (Ansible, Python) for repeatable changes and evidence collection. Loadbalancing (e.g. F5), secure email/web gateways, or SD-WAN exposure. Certifications: CCNA/CCNP (Enterprise or Security), PCNSA/PCNSE, Check Point CCSA/CCSE, VMware More ❯
that support mission-critical business operations. Responsibilities:Design and implement enterprise-grade network architectures leveraging SDN, SDA, and SD-WAN technologies.Configure, deploy, and troubleshoot Cisco routers, switches, firewalls, and load balancers across large (link removed)tegrate and manage Cisco ISE for network access control, identity management, and policy enforcement.Optimize routing protocols such as OSPF, EIGRP, BGP, and ensure high … availability through MPLS and VPN solutions.Manage and maintain advanced firewall configurations, VPN tunnels, and loadbalancing for secure connectivity.Collaborate with network security and operations teams to ensure compliance, performance, and scalability.Participate in architecture reviews, capacity planning, and performance optimization initiatives.Develop and maintain technical documentation, network diagrams, and operational procedures. Required Skills & Qualifications:Bachelor s degree in Computer Science … SDA)Software Defined Wide Area Network (SD-WAN)Cisco Identity Services Engine (ISE)Strong proficiency in network protocols and technologies, including:TCP/IP, OSPF, EIGRP, BGP, MPLS, VPNFirewalls, Load Balancers, Routers, and Switches Valid industry certifications (one or more of the following):CCNA, CCNP, CCIE, CCDE, PCNSE, NSE9, JNCDA, JNCDS-DCExperience in network automation using Python, Ansible, or More ❯
and hands-on experience of configuring, troubleshooting and supporting Cisco and F5 networking equipment in a datacentre environment, specifically Cisco Nexus switches, Cisco ASA firewalls, F5 LTM and DNS load balancers. Strong network design and management skills and experience, including setting up firewall rules, dynamic routing, loadbalancing, intrusion detection and prevention, setting up remote access and More ❯
/EIGRP) Meraki - Edge Network & Wi-Fi (including site to site VPN via MX200/250/400, switch stack management, L2 and L3 switching) Aruba - Authentication (ClearPass) F5 - Loadbalancing Checkpoint - HQ and Cloud Firewall (including site to site VPN) Experience working in a support environment Experience troubleshooting/configuring and installing various network devices Understanding of More ❯
skills in Linux/Unix administration and shell scripting. Proficiency with cloud platforms (AWS, Azure, GCP) and container orchestration (Kubernetes, Docker Knowledge of networking fundamentals (TCP/IP, DNS, loadbalancing Proficiency in Linux/Unix administration, scripting (Python, Bash, or similar Experience with monitoring tools (Prometheus, Grafana, DataDog Familiarity with containerization (Docker, Kubernetes) and cloud services. Experience More ❯
advanced content filtering Expertise in malware prevention and data loss prevention systems, including Day Zero threat prevention MUST have extensive knowledge on fundamental networking concepts of DNS, DHCP, Firewalls. Loadbalancing, IPS, basic routing/switching; excellent understanding of TCP/IP and packet analysis Expertise in creating Application and network diagrams including all pertinent flows and decisions. More ❯
Birmingham, West Midlands, England, United Kingdom
Walter Everett
with the following is highly desirable: Security: Cisco (LAN/WAN/WLAN/Telephony), Fortinet (WAN/SD-WAN), Check Point, Palo Alto, Infoblox (DHCP & DNS), Bluecoat, Zscaler LoadBalancing & Proxies: Citrix NetScaler or similar Tools & Platforms: Experience with Catalyst Center, FortiManager, Panorama Scripting/Automation: PowerShell, Terraform, Ansible (or similar) ITSM Systems: Familiarity with support ticketing More ❯
Stevenage, Hertfordshire, South East, United Kingdom Hybrid/Remote Options
MBDA
this is the place to make an impact. What we're looking for from you: ESSENTIALS Solid understanding of networking principles (TCP/IP, DNS, routing, switching, VLANS and loadbalancing) Strong expertise in configuring, maintaining and troubleshooting firewalls e.g. Cisco, Checkpoint, Palo Alto Demonstrable hands-on experience in next-gen firewalls and advancing security features like IPS More ❯
manchester, north west england, united kingdom Hybrid/Remote Options
Starling
have: Experience of architecting and engineering cloud infrastructure to support existing services and develop new ones Experience with AWS services including EKS, VPC, IAM, RDS, EC2, ECS, S3, R53, LoadBalancing and Direct Connect Experience of service oriented architecture with containers, distributed systems and immutable infrastructure Experience with Infrastructure as Code and infrastructure provisioning tools, particularly terraform Experience More ❯
as Code (IaC) Terraform, Ansible, or CloudFormation. Experience with containerization and orchestration (Docker, Kubernetes, Helm). Strong background in Linux system administration and shell scripting. Knowledge of networking, security, loadbalancing, and performance optimization. Experience with monitoring, alerting, and logging tools (Grafana, ELK, Splunk, Prometheus). Familiarity with version control systems (Git) and Agile/Scrum methodologies. Preferred More ❯
Prometheus, Grafana, or similar) Problem-solving skills - ability to troubleshoot complex distributed systems Desirable Skills and Experience Experience with GitHub Actions for CI/CD Understanding of networking and loadbalancing in cloud environments Security tooling experience - vulnerability scanning, SAST/DAST, compliance automation Experience with cost optimization and FinOps practices in cloud environments Knowledge of database administration More ❯
Belfast, County Antrim, Northern Ireland, United Kingdom Hybrid/Remote Options
Fieldfisher
as required. Several years' experience in a similar role. Desirable but not essential: Knowledge of Azure Tools, including AKS, Azure Functions, and IAC tools such as Terraform Network Application loadbalancing products such as F5 or equivalent. Knowledge of MDM products such as Intune or equivalent products. Knowledge and hands-on experience of Microsoft Dynamics AX. Experience Configuring More ❯
CD and Infrastructure as Code (IaC) using tools such as Azure DevOps. Familiarity with containerisation and orchestration (Docker, Kubernetes). Knowledge of networking and security fundamentals in Azure (ExpressRoute, loadbalancing, DNS, availability sets). Awareness of other cloud platforms (AWS, GCP) is a plus. More ❯
Azure SQL, PostgresDB ) - Proficient in IaaC tools such as - Terraform and GitHub Actions. - Proficiency in one or more programming languages - (link removed)/Java - Strong understanding of networking concepts, loadbalancing, and security practices. More ❯
City, London, United Kingdom Hybrid/Remote Options
Saab UK
across the Support and Operations teams. Experience/Qualifications Essential requirements Demonstrable knowledge and experience in 3 or more of the following: Microsoft Windows Server Microsoft SQL Server Networking (Loadbalancing, Firewalls, TCP/IP) Linux (Debian or RHEL) Telephony/UC (SIP, ACD, VOIP) Active Directory (ADFS, domain management, users/groups, policies, certificates etc.) Infrastructure management More ❯
London, South East, England, United Kingdom Hybrid/Remote Options
Saab UK
across the Support and Operations teams. Experience/Qualifications Essential requirements Demonstrable knowledge and experience in 3 or more of the following: Microsoft Windows Server Microsoft SQL Server Networking (Loadbalancing, Firewalls, TCP/IP) Linux (Debian or RHEL) Telephony/UC (SIP, ACD, VOIP) Active Directory (ADFS, domain management, users/groups, policies, certificates etc.) Infrastructure management More ❯