51 to 75 of 239 TCP/IP Jobs in London

Senior Infrastructure Operations Engineer - Wimbledon, London

Hiring Organisation
Appcast
Location
London, UK
of your own career progression then this role is for you.The Lead Automation Engineer should have:3 years experience with Windows Systems / systems support / operations support and Windows AutomationPowershell scriptingKnowledge of Windows DSCStrong technical leadership experienceUnderstanding of how tasks should be automated.Creating … managing documentation.Virtualisation including Hyper-V and SCVMM.Microsoft platforms including Windows Server 2008R2 / 2012R2, IIS 7 / 8.Good understanding of TCP / IP and the OSI stack.Usage of Active Directory.Enterprise server estates including Blade systems and high-density servers.Enterprise networking ...

Trade Flow Support - Trading Infrastructure Support

Hiring Organisation
SQUAREPOINT CAPITAL
Location
London, UK
mission critical services such Infrastructure as a Service (IaaS), Build & Deploy, Research and Trading. The candidate will be responsible for providing L1 / L2 support across all services globally distributed across APAC, EMEA and AMER regions.Provide monitoring and L1 / L2 support across all services … quickly react to any outages to maintain a highly available environmentQuickly identify, analyze and correct alerts & issues and / or escalate to minimize trade flow impact and preempt outagesIntensive interaction with trading community, external vendors, development and infrastructure teamsOversee automated processes, scheduled jobs and regular reportsManage users’ requests ...

Penetration Tester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
London, United Kingdom | Posted on 05 / 11 / 2025 Salary £70,000 – £95,000 / year (Depending on Experience) City London Province City of London Country United Kingdom Postal Code EC3M Job Description Job Description We are looking for a certified Penetration Tester … Metasploit, Nmap, Wireshark) Experiencewith OWASP Top 10 , vulnerability scanning, and exploit development Familiaritywith MITRE ATT&CK framework and red team methodology Solidknowledge of TCP / IP, firewalls, DNS, HTTP / HTTPS, and encryptionprotocols Strongreporting and communication skills Atleast one industry certification (OSCP ...

Linux Engineer - Quant Fund

Hiring Organisation
Quant Capital
Location
London, UK
automating is also enjoyable and that should be how you also see it.You will need:5 years of hands-on experience in Linux / Unix administration (RHEL / CentOS / OEL preferred).Strong verbal and written communication skills.3+ years of experience of leading … technology team (preferably Infrastructure support / Sys Admin team)Relentless dedication to customer service.Strong analytical, prioritizing, interpersonal, problem-solving skills.Knowledge of the CI / CD pipeline tools and understanding of the conceptWorking knowledge with TCP / IP, multicast, tcpdump, clocking ...

Trade Flow Support - Trading Infrastructure Support Lead

Hiring Organisation
SQUAREPOINT CAPITAL
Location
London, UK
team.Stay hands-on with troubleshooting and lead major outage recovery efforts to minimize impact.Required Qualifications:5+ years of hands-on experience in Linux / Unix administration (RHEL / CentOS / OEL preferred).Strong understanding of CI / CD practices, including observability, orchestration … solving abilities.Working knowledge of storage protocols (NFS, GPFS a plus).Experience with infrastructure automation tools (Chef, Puppet, Ansible).Solid understanding of networking fundamentals (TCP / IP, multicast, tcpdump, PTP, NTP).Ability to thrive in a fast-paced, deadline-driven environment.Bachelor’s degree in Computer ...

Deskside Support Analyst

Hiring Organisation
Markel
Location
London, UK
strategic underwriting decisions our business makes The Deskside Operations Analyst is responsible for specialised information technology areas performing operational, analytical, and / or technical support functions to maintain and improve the end users experience.This role would suit a candidate looking to build upon their IT support experience … Service Requests.Diagnose and resolve end user network, VPN, Wi-Fi, and LAN access problems and be responsible for the escalation.Coordinating SOHO Kit configuration / shipment for existing employees and new starters.Understand principles and practices of ITIL standards.Providing conference room equipment support and upkeep.Provide support for all office hardware ...

ASPIRE GSC-Onsite IT Support Engineer

Hiring Organisation
Version 1
Location
London, UK
employees are at the very heart of what we do: UK & Ireland's premier AWS, Microsoft & Oracle partner 3300+ strong, 350 / 300m revenue business 10+ years as a Great Place to Work in Ireland & UK Best Workplace for Women in the UK & Ireland by GPTW Best Workplace … knowledge base.Deliver excellent customer service and build strong relationships with end-users.Handling escalations calmly & professionallyOnsite presence & demonstrating end user empathyProvision of VIP / Executive supportMonitor system performance and identify potential issues proactively.Conduct routine health checks of systems, applications, and networks to ensure optimal performance.Monitor and manage system alerts ...

Distributed Network Engineer/Architect

Hiring Organisation
Intellectual Capital Resources
Location
London, UK
supporting a fast-scaling semiconductor company developing next-generation networking and security technology. They are looking to hire an experienced Distributed Network Engineer / Architect to join their fast growing team in London This is a hands-on staff engineer position with ownership of distributed networking architecture … decisions that span multiple teams, acting as the fulcrum across their networking, security and distributed system teams. You will be taking technical (Design / Architecture / Implementation) ownership over large-scale network and control plane systems that operate at global scale across cloud and networking ...

Network Engineer Central London, Hybrid - £60,000

Hiring Organisation
Ashdown Group
Location
Central London, London, United Kingdom
Employment Type
Permanent
Salary
£65,000
will include: Configure, manage and troubleshoot FortiGate firewalls and Fortinet security solutions. Manage firewall policies, NAT, VPNs, routing and security rules. Support LAN / WAN, switching, routing and network security infrastructure. Monitor network performance, availability and security. Investigate and resolve complex network incidents and outages. Perform network changes … Ensure network environments meet security and operational standards. Essential Skills & Experience Strong commercial experience as a Network Engineer. Hands-on experience with Fortinet / FortiGate environments. Solid understanding of TCP / IP, DNS, DHCP, VLANs, routing and switching. Experience with firewalls, VPNs ...

Network Engineer – Central London, Hybrid - £60,000

Hiring Organisation
Ashdown Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£63,000 - £65,000 per annum
will include: Configure, manage and troubleshoot FortiGate firewalls and Fortinet security solutions. Manage firewall policies, NAT, VPNs, routing and security rules. Support LAN / WAN, switching, routing and network security infrastructure. Monitor network performance, availability and security. Investigate and resolve complex network incidents and outages. Perform network changes … Ensure network environments meet security and operational standards. Essential Skills & Experience Strong commercial experience as a Network Engineer. Hands-on experience with Fortinet / FortiGate environments. Solid understanding of TCP / IP, DNS, DHCP, VLANs, routing and switching. Experience with firewalls, VPNs ...

Voice/Video Infrastructure Engineer (NICE/Zoom)

Hiring Organisation
Quant Capital
Location
London, UK
Infrastructure Engineer (NICE / Zoom) 60000-80000Quant is urgently looking for an Infrastructure Engineer with Nice and Zoom experience to join our high profile client.Our client is a well known broker in the equities space. They are currently building a greenfield trading platform based in equities.You will … troubleshooting, and deployment of video conference systemsAbility to gather and troubleshoot issues using log files and network tracesStrong knowledge of SIP, including CUBE / SBCWork with other IT teams, including Security, Network, and Systems engineers, in planning and designing voice and video infrastructure and deploymentsParticipate in client discussions ...

Data Centre Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Orpington, London, United Kingdom
Employment Type
Permanent
Salary
£45,000
working alongside project teams and clients to deliver successful installations Technologies you'll be working with: Windows Server & Active Directory Microsoft Azure VMware / Hyper-V Cisco, HPE, Aruba & Dell hardware Firewalls, wireless infrastructure & networking TCP / IP, DNS, DHCP & VLANs Structured … cabling (Cat5e / Cat6 / Fibre) Server racks, patch panels & cable management Backup technologies & ConnectWise (or similar) What's on offer: Salary up to £45,000 Company van & fuel card Exposure to a variety of infrastructure and data centre projects Ongoing training and career development Opportunity ...

Desktop Support Analyst - Linux, Windows

Hiring Organisation
N P Associates
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £55,000 per annum
floor, resolving issues directly while continuously identifying and eliminating repetitive manual tasks through automation and scripting. Candidates MUST have at least some Unix / Linux Systems Administration experience along with strong Scripting in any of: PowerShell, Bash, Python. About the role: Acting as the first point of contact … person, phone, chat, ticketing), triaging quickly and prioritising anything affecting live trading or market-critical systems. Providing desktop support for Windows and Unix / Linux workstations, including setup, imaging, configuration, troubleshooting, and hardware. Supporting multi-monitor trading desk setups, peripherals, and dealer boards, as well as setting ...

IT Infrastructure Engineer 2nd and 3rd Line with Japanese

Hiring Organisation
Appcast
Location
London, UK
Japanese)Communicate and coordinate with the user in each office (in English)Provide support for to end users during system deployment / migration(User manual, user training) Global User Support Act as 2nd / 3rd line support for IT infrastructure related enquiries and incidents.Escalate the incidents … appropriate vendors.Incident management with the ticketing system (etc. ServiceNow).Skills / Knowledge:Technical Proven working experience in IT Service management operationsBasic network knowledge (e.g. TCP / IP, proxy, firewall, switching, routing and WiFi)Basic operation system knowledge (e.g. Windows10, Windows server, Azure ...

IT Infrastructure Engineer

Hiring Organisation
Morson Group
Location
London, UK
Splunk, Tenable and ManageEngine Patch Manager Plus will be advantageous.You will provide advanced support across end-user computing, branch IT, meeting rooms, AV / conferencing and Microsoft 365, including Active Directory, Group Policy, NTFS permissions, OS deployment, software packaging, Outlook, Teams, OneDrive and SharePoint.The role will also support … markets, treasury, payments or banking technology environments is highly desirable.Strong networking experience is required, including Cisco switches and routers, FortiGate firewalls, DNS, DHCP, TCP / IP, LAN / WAN, routing and connectivity troubleshooting. Experience with OpenSSL and SSL / ...

Site Reliability Engineer - Sports Betting

Hiring Organisation
Quant Capital
Location
London, UK
Site Reliability Engineer – Fintech / Linux100,000Quant Capital is urgently looking for a Site Reliability Engineer to join our high profile client.Our client is a data company specialised in the aggregation and global distribution of real time sports betting odds. They use unique online data from many sources … grown massively and recently were voted in the top 50 fintech firms globally.Day to Day the Site Reliability Engineer will:Ensuring the 24 / 7 availability of systems, infrastructure and our real-time, low latency data services.Designing, building and allocating compute resources as required by application, customer ...

Threat Detection Engineer - Permanent - SOC, KQL, Active Directory, Powershell, Python - Hedge Fund

Hiring Organisation
Scope AT Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
business strategies. Operational Excellence - Ensure Millennium Information Security capabilities remain fit for purpose and evolve to meet the changing threat landscape. Qualifications / Skills Required Bachelor or master's degree in computer science or cyber security with strong IT background or equivalent demonstrable experience. 3 years' experience working … tooling across security domains; network, endpoint, data, identity and cloud. Experience in standard enterprise technology stack, Active Directory, Entra, Group Policy, Intune, DNS, TCP / IP, PKI, Microsoft 365, Windows, Linux, MacOS, etc. Ability to handle sensitive and / or confidential materials ...

Staff Engineer, Solana

Hiring Organisation
R3
Location
London, UK
Corda Protocol RWA yield marketplace to scale it to multichain & multi-curator future• Design and build Solana programs (Rust / Anchor) for vaults, order books, AMMs, lending markets, or related liquidity infrastructure.• Build the full stack around these programs: indexers, keepers / crankers … APIs, and the React / TypeScript front ends that expose them to users and integrators.• Work directly on market-making and liquidity systems and the plumbing that keeps venues liquid and solvent.• Participate in code review, threat modelling, and internal / external audits ...

Solutions Consultant

Hiring Organisation
Nuix
Location
London, UK
valid passportBachelor’s Degree or equivalent combination of education and experienceProven understanding of multi-tier application architectures (application layer, database layer, search / indexing layer & storage / networking dependencies)Experience implementing and troubleshooting PKI, SSL / TLS certificates, and secure communicationsWorking knowledge of identity … access management (Active Directory, LDAP, SAML / SSO)Solid knowledge of Windows Server and / or Linux system administrationStrong organizational, prioritization and time management ability with a deadline focusAbility to collaborate and communicate effectively across multiple time-zonesMust be able to travel as needed (35%+ ...

Senior Network Engineer Fintech BGP Multicast

Hiring Organisation
Quant Capital
Location
London, UK
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 … customer facing issues Generate, Follow Up, and Complete tickets for customer and carrier events Construct valid configurations for implementation based upon design and / or technical concepts Support deployment and maintenance of network switches, routers, firewalls, and other network appliances Application of configuration changes via our change control ...

Site Reliability Engineer

Hiring Organisation
Inspire People
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
with development teams giving them the tools for their job, including application performance monitoring, exception, log and metrics aggregation, dashboards, and declarative CD / CI pipelines. £45,835 to £60,993 (including allowances) London £49,734 to £60,993, National £45,835 to £57,176. (including allowances) plus … initiative to develop the tools for their job, including application performance monitoring, exception, log and metrics aggregation, dashboards, and declarative CI / CD (continuous integration / continuous delivery) pipelines. You'll work alongside senior members of the team to pro-actively engage product teams about service ...

Specialized Cloud Network Engineer - Multi-Cloud

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
London Arena, United Kingdom | Posted on 29 / 07 / 2026 Specialized Cloud Network Engineer -Multi-Cloud Contract Location: London / Belfast (Hybrid) Contract Duration: 12 months initially (with potential extension) Contract Start Date: Immediate Contract Classification: Inside IR35 Job Summary As a Cloud … philosophy to ensure operationalexcellence. Key Responsibilities Multi-Cloud Network Architecture & Engineering: Design, implement, and manage advanced network architecturesacross AWS and GCP, including VPC / VNet design, subnetting, routing, IPaddressing schemes, and network segmentation. Hybrid Cloud Connectivity: Establish and maintain robust, high-performance, and secure connectivitybetween on-premise data ...

Service Delivery Analyst

Hiring Organisation
Toro Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 per annum
configure and maintain Windows and MacOS endpoints Basic macOS troubleshooting (safe mode, disk space, software updates, FileVault) Support the management of Sophos MDR / XDR Investigate endpoint security alerts. Assist with vulnerability remediation and patch management. Support endpoint compliance and security best practice. Assist with customer cyber security … Remote desktop environments Assist with: Backup monitoring and restore testing Firmware updates Infrastructure maintenance Performance investigations Networking Support customer networking environments including: Ubiquiti / UniFi Managed switches Firewalls Wireless access points VPN connectivity Internet connectivity troubleshooting User Administration Manage starters, movers and leavers. Provision and decommission user ...

Infrastructure Engineer (NICE / Zoom)

Hiring Organisation
Quant Capital
Location
London, UK
Infrastructure Engineer (NICE / Zoom) Quant is urgently looking for an Infrastructure Engineer with Nice and Zoom experience to join our high profile client. Our client is a well known broker in the equities space. They are currently building a greenfield trading platform based in equities. You will … video conference systems o Ability to gather and troubleshoot issues using log files and network traces o Strong knowledge of SIP, including CUBE / SBC o Work with other IT teams, including Security, Network, and Systems engineers, in planning and designing voice and video infrastructure and deployments ...

Onsite AV Engineer

Hiring Organisation
Jacobs Massey
Location
City of London, London, United Kingdom
Employment Type
Permanent
Video Conferencing: -Expertise in major platforms (e.g., Microsoft Teams Townhall & Zoom) -Advanced troubleshooting of video, audio, and content sharing issues. -Understanding of SIP / H.323 protocols and cloud-based conferencing services Microsoft Teams Ecosystem: -Expert-level knowledge of MTR deployment, configuration, management, and troubleshooting (Windows and Android). … beamforming arrays) and optimal deployment. -Strong understanding of loudspeaker systems, amplification, acoustic principles, audio routing, mixing, and gain structure optimisation. -Familiarity with Dante / AVB / AES67 audio networking protocols. Display Technologies: -Expertise in projectors, interactive displays, LED walls, and commercial-grade LCD / ...