76 to 100 of 188 TCP/IP Jobs in London

Catalyst 9800 wireless solutions. Lead wireless infrastructure upgrades and migration from legacy platforms. Implement and support 802.1X, MAB, RADIUS, EAP-TLS / PEAP authentication and policy enforcement. Troubleshoot complex authentication, connectivity and wireless performance issues. Support high-availability deployments, upgrades, patching and lifecycle management. Produce technical documentation … work closely with internal stakeholders and Cisco TAC. Required Experience Strong enterprise networking background covering TCP / IP, VLANs, OSPF / BGP, DHCP, DNS and network security . Hands-on experience with Cisco ISE including policy sets, profiling, guest / ...

apps of the world such as TikTok.Responsibilities:- Design, build, operate and optimize the global network, including backbone, data center, public cloud and Edge / CDN.- Work with cross-functional teams including but not limited to compute, storage, database, recommendation system, drive the innovation and evolution of the network. … selection, perform testing and verification.- Travel may be required up to 15% - 30% of the time.Minimum Qualifications:- Good understanding of network protocols including TCP / IP, DHCP, BGP, OSPF / IS-IS and MPLS related technologies.- Good understanding of network monitoring protocols ...

assessments and penetration testing exercises, prioritising and remediating findings in a timely mannerManage and continuously improve security tooling, including SIEM, EDR, firewalls, IDS / IPS, and endpoint protection platformsAct as the escalation point for security-related incidents across 2nd and 3rd line, providing expert guidance and driving resolutionSupport … switches, VPNs, and wireless systems (primarily Cisco-based), with a security lens on all configuration and changeOperate across Windows and Linux (Red Hat / CentOS) environments, ensuring both are maintained to a consistent security baselineCollaborate with infrastructure and technology teams to embed security into project delivery ...

Audio-Visual & IT Support Specialist Location: West London (On-site, 5 days / week) Contract: 12-Month FTC Day rate: £188 - £225 / day About the Role We are working with one of our clients to look for an AV & IT Support Specialist to manage … controls during live hybrid broadcasts and staff town halls. Desktop & Workplace Support: Act as an escalation point for Windows 11 and macOS hardware / software tickets, peripheral setups, and mobile device configurations. Asset & Vendor Oversight: Maintain precise hardware inventory, manage equipment dispatch / recycling processes ...

user permissions, as well as routine hardware maintenance. Detailed knowledge of basic computer concepts, PC hardware and software troubleshooting, and workstation (desktop / laptop) hardware. Experience supporting Windows XP / 7 and Server operating systems in a managed desktop environment. Experience supporting Macintosh OS X (10.4 … upwards) desirable. Basic working knowledge of Linux / UNIX systems (Red Hat preferable) at a user level. Solid knowledge of networks including Ethernet, TCP / IP, and Windows Server networking. Self motivated with the ability to work independently with minimal supervision. Ability ...

excellent opportunity has become available for a Junior IT Support Engineer / IT Support Technician to join a global ship owner operating within an international environment. Working as part of the IT team, you will support users across both office and vessel locations, helping to resolve technical issues … similar role. Experience supporting desktop and laptop hardware. Knowledge of Windows 10 and Windows 11. Understanding of Active Directory user administration. Knowledge of TCP / IP, DNS, DHCP, VPN connectivity, and wired / wireless network troubleshooting. Experience supporting printers and peripheral devices. ...

limited to, design, deployment, and escalated problem resolution, for a large service provider network infrastructure. You’ll work with internal / external clients, operations / systems, financial exchanges, and other Network Engineers to design, automate, research and develop, investigate and solve system issues, and participate … should have:CCIE or JNCIE certified or equivalent level of knowledgeStrong understanding of general network routing and switching protocols and theory.Solid understanding of IP Multicast with experience supporting market data feeds in a trading environment.In depth knowledge of BGP theory, operation, and traffic-engineering within complex routing domains.Detailed ...

resolve IT service desk tickets, prioritising issues appropriately and providing a high standard of customer service. Install, configure and maintain IT infrastructure, including: TCP / IP, WAN, WLAN and SD-WAN networking Windows 10 / 11 Apple iOS and Android devices Microsoft … Microsoft Intune Exchange SharePoint Azure AD / Microsoft Entra ID Support the integration and operation of OEM systems, telephony and dealership Wi-Fi solutions. Work directly with dealership teams to understand operational requirements and implement practical IT solutions. Assist with IT projects, system upgrades, site openings, technology rollouts ...

Site Reliability Engineer – Fintech / Linux Site Reliability Engineer – Fintech / Linux85,000 Plus BonusQuant Capital is urgently looking for a Site Reliability Engineer to join our high profile client.Our client is a major global financial exchange, driven by technology. They are at the bleeding edge … platform Monitoring development activities, change management tickets Monitoring U.S. production, disaster recovery, and certification systems for issues Assisting build team to resolve build / deployment issues Working Jira tickets assigned to DevOps Capacity planning Managing operational batch processing Software DevelopmentSite Reliability Engineer Must Have:Experience in a technical ...

work from home on Wednesday. London office address: The Bower, The Tower, 207 Old St, London EC1V 9NROur Tech Stack:DockerAWS EKSKafka / AutoMQ for asynchronous messagingElixir & Ruby for core servicesgRPC for inter-service communicationGraphQL for API ingressNext.js / TypeScript for frontendPostgreSQL (RDS) for persistent storageGitHub … Actions (primary CI), with Jenkins & Argo Workflows for legacy pipelinesRedis for key / value storageTerraform for infrastructure as codePython and GoLang for our Platform toolsDatadog, Sentry for observability and incident responseWhat you will be doing:Platform Architecture & ScaleDefine and evolve infrastructure architecture to support multi-region deploymentsDesign systems ...

governance of approved AI-assisted engineering practices across teams to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review / refactoring, test acceleration, release readiness, incident / root-cause analysis), while establishing measurable validation standards (secure coding, peer review, automated testing … promoting reuse of proven patterns and automation within the SDLC / TLM toolchain.Applies knowledge of tools within the Software Development Life Cycle toolchain, including approved AI-assisted development and automation capabilities, to improve the value realized by automation at scale.Required qualifications, capabilities and skills Detailed understanding of public ...

Windows 11. Basic Active Directory administration. Experience supporting desktop and laptop hardware. Knowledge of printers and peripheral devices. Understanding of networking fundamentals including TCP / IP, DNS, DHCP, VPNs and wired / wireless connectivity. Strong troubleshooting and problem-solving skills. Excellent communication ...

performance of our IT environment. You’ll administer and support Microsoft 365 and core Windows services (including Active Directory, Group Policy, DNS / DHCP), while providing responsive end-user support and partnering with internal teams and external suppliers. The focus is on keeping systems stable and secure, improving … disaster recovery solutions. Experience troubleshooting hardware, software, and network issues in a business environment. Familiarity with cloud platforms such as Microsoft Azure and / or AWS is desirable. Experience working with IT service management (ITSM) tools and following change management processes. Demonstrated ability to prioritise workload, manage multiple ...

security technologies while receiving regular guidance from senior team members.KEY RESPONSIBILITIESInfrastructure Security Implementation Support Assist in implementing network security controls including firewalls, IPS / IDS, and proxies under supervisionConfigure basic network security policies and access control lists following approved designsSupport network segmentation implementations and VLAN configurationsAssist with … network security principles and architecturesFamiliarity with firewall concepts and basic configuration (Palo Alto, Cisco ASA, Fortinet)Knowledge of common security technologies (antivirus, IPS / IDS, proxies)Understanding of Windows and Linux operating system securityBasic scripting skills (PowerShell, Bash, Python) for automation tasksNetwork and Infrastructure FundamentalsNetwork protocols: TCP ...

processors, vendors, and gateways,card‐present and card‐not‐present transaction flows,authorization and settlement models, transaction lifecycle,industry‐specific use cases (attended / unattended, e-commerce, retail, hospitality, AFD, EVC, transit, CIT / MIT, etc.),familiarity with payment methods, digital wallets, APM / … requirements and payment security principles,practical knowledge of cryptography as applied in payment systems,understanding of networking fundamentals and communication protocols, including TCP / IP, DNS, routing, NAT, VLANs, firewalls, VPNs, IPSec, TLS.Consulting and Delivery Skillsability to advise customers on selecting appropriate payment solutions ...

Senior Site Reliability Engineer (SRE) - GCP / KubernetesAbout the RoleWe are seeking an experienced and highly motivated Senior Site Reliability Engineer (SRE) to join our small, agile engineering team. This role offers the unique opportunity to drive the reliability, scalability, and performance of our core platform with … Code: Deep expertise in Terraform for managing cloud and Kubernetes resources.Deployment: Strong experience with Helm for packaging and deploying applications on Kubernetes.Scripting / Programming: Proficient in at least one major programming language, preferably Python, for automation and tool development.Tooling & ConceptsCI / CD: Experience setting ...

overcome customer barriers and concernsInfluence product direction with your unique understanding of customer needsCollaborate with support to accelerate product improvementWork with Project Managers / Operations team members in the execution of designed security solutionsPrepare required project documentation (floorplans, scope of work, assumptions, etc.)What You BringOutstanding Swedish … degree in Computer Engineering, Information Technology, Information and Computer Technology, Networking, IT Security from an accredited universityStrong background in IT fundamentals: Experience with TCP / IP, DNS, DHCP, and routing / switching devices; No experience with products related to physical security ...

multi-site environment. The Networks Infrastructure Engineer MUST have: Experience with Palo Alto firewalls Knowledge of cloud networking technologies, particularly within Azure / AWS Experience with Cisco Meraki (Nice to have) The Network Infrastructure Engineer will ideally have the following attributes: Strong experience working within enterprise networking environments … degree qualification (BSc, MSc etc.) in Computer Science, Network Engineering, IT Infrastructure or similar would be beneficial Strong knowledge of TCP / IP, subnetting, routing, and switching Experience managing firewalls, VPNs, WAN technologies, VLANs, and Layer 2 / 3 networking Experience troubleshooting ...

Qualifications:1–3 years of professional experience writing clean, preferably in modern C++, with a strong grasp of memory management and multi-threading.AI / ML Familiarity: Academic or professional experience working with machine learning libraries and frameworks.Interest in trading and financial markets.Ability to work in a fast-paced … models.Education:Bachelor’s or Master’s degree in Computer Science, Computer Engineering, Mathematics, or a highly quantitative field.Preferred Qualifications:Experience with networking protocols (TCP / IP, UDP) or hardware acceleration (CUDA / GPUs).Familiarity with CVS, git and Linux / ...

provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within the IP - Network Services, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products … authorized AI-assisted engineering practices within the work environment to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review / refactoring, test strategy acceleration, incident / root-cause analysis support), while establishing consistent validation standards (secure coding, peer review, automated testing ...

environment Strong Microsoft 365, Azure, Intune & Entra ID experience Windows Server, Active Directory & Group Policy administration Strong networking knowledge including DNS, DHCP, TCP / IP, VLANs, VPNs, Routing & Firewalling Experience configuring and supporting firewalls, switches and wireless networks Hyper-V virtualisation PowerShell scripting ...

knowledge to identify realistic attack paths and improve cyber resilience.We are looking to grow our UK Red Team capability with a Senior Consultant / L3 Red Team Operator. Our expertise in red team operations, purple team engagements, assumed-breach testing, adversary emulation, and threat intelligence-led penetration testing … client engagementsExperience developing, modifying, or extending offensive security tooling, scripts, or payloadsWorking knowledge of at least one of C, C#, Python, PowerShell, and / or JavaScript, to support offensive security objectivesPractical understanding of evasion techniques, endpoint security controls, operational security, and detection-aware tradecraftStrong understanding of networking ...

issues to the Senior IT Manager or external vendors when necessary. What Our Client is Looking For: Proven experience in a similar 1st / 2nd Line IT Support or Helpdesk role. Strong working knowledge of Microsoft Office 365, Windows 10 / 11, and Active Directory. Basic … understanding of networking concepts (TCP / IP, DNS, DHCP, VPNs). Experience with hardware troubleshooting (PCs, laptops, printers, and mobile devices). Excellent communication skills with the ability to explain technical issues to non-technical staff. A logical approach to problem-solving ...

Senior Linux / Unix Automation Engineer London 3 days on the office 9 Months Contract + Extension £350 a day Inside IR35 A well established firm is looking for an experienced Systems Engineer who brings solid Unix and Linux administration experience alongside hands-on infrastructure automation skill … level OS troubleshooting. Automation & Scripting: Writing Python scripts, Ansible playbooks, and Bash to automate manual plant tasks. Networking Protocols: Deep understanding of TCP / IP, BGP, HTTP, SSL / TLS, and DNS. Command Line Control: Daily experience inside the Linux ...

South West London. Our is hiring an Infrastructure Engineer to take ownership of core infrastructure and security engineering across a modern Microsoft / Azure environment. This role suits someone who understands scale, cares about uptime, and thinks security-first. Real responsibility from day one. You’ll deliver projects … experience with Microsoft technologies including Windows Server andDesktop, Active Directory, Entra, Hybrid domains, Group Policies, 365, Intune, Teams,SharePoint, NTFS etc. • Networking – TCP / IP, VLANS, VPNs, Wi-Fi, DNS internal and Global DNS Providermanagement, good level of network hardware experience e.g. Cisco / ...