1 to 25 of 69 TCP/IP Jobs in Central London

2nd Line IT Support Engineer London Bridge, SE1 – Hybrid (1 week office / 1-week WFH) £38,000 – £42,000 + training + bonus + perks Our client is a growing London-based MSP with a loyal client base and a reputation for going the extra mile. They’re all about great service, teamwork and continuous improvement — and … Recommending improvements and contributing to IT projects and rollouts What You’ll Bring You’re confident, curious and customer-focused, with: Strong hands-on experience with Windows 10 / 11 and macOS Solid understanding of LAN / WAN / Wi-Fi networking Proficiency in Windows Server 2012 / 2016 / 2019 and technologies like: Active Directory, Hyper-V, DNS, DHCP, DFS, ADFS, FAP Knowledge of PC setup , TCP / IP networking and system configuration Experience with cloud platforms such as Office 365, Google Workspace, AWS or Azure Why Join? Hybrid flexibility – split your time between home and their London Bridge office Supportive More ❯

from Help Desk and provide technical assistance to end users Assist in telecom phone setup using Cisco Unified Communications Manager and Cisco Unity Connection Administration to create extensions / voice mail and modify users’ phones when requested Setup, dismantling and relocating users’ desks Manage and maintain technology equipment inventory in asset management system Ensuring all Video Conference requests … in accordance with the requestor’s wishes Maintain strong knowledge of third-party video conference systems. Including but not limited to: WebEx, Zoom, MS Teams Travel to Europe / Paris office to provide on-site support to firm’s Paris-based community Technology Support Specialist Skills & Requirements: Bachelor’s degree or Professional certification preferred; similar to A+, N+ … with current Windows Operating Systems, Microsoft Office, Citrix, VPN, Interwoven FileSite, Innova template and other legal industry application Strong knowledge of desktop hardware and peripherals, phones, and A / V equipment (PCs, notebooks, printers, scanners, mobile phones (iOS and Android) Knowledge of network and Internet technologies, protocols and concepts (TCP / IP More ❯

based in London. This is a hands-on engineering role at the frontier of high-performance trading systems What You’ll Do Design and implement modern C++ (C++20 / 23) applications for ultra-low latency trading. Optimize performance at the CPU, kernel, and network stack level to minimize latency and maximize throughput. Engineer and maintain Linux-based systems … tuned for high-frequency trading workloads. Develop and refine TCP / IP networking solutions for market connectivity. Collaborate with traders, researchers, and engineers to deliver robust, production-ready systems. Explore opportunities to integrate AI / ML techniques into trading workflows, from signal generation to system optimization. What We’re Looking For Proficiency … performance-critical applications. Deep understanding of CPU architecture, cache optimization, memory management, and instruction pipelines . Exposure to Linux kernel-level programming and tuning . Solid knowledge of TCP / IP networking and experience building high-throughput, low-latency network applications. Proven track record of developing real-time, high-performance systems (finance, gaming, or More ❯

based in London. This is a hands-on engineering role at the frontier of high-performance trading systems What You’ll Do Design and implement modern C++ (C++20 / 23) applications for ultra-low latency trading. Optimize performance at the CPU, kernel, and network stack level to minimize latency and maximize throughput. Engineer and maintain Linux-based systems … tuned for high-frequency trading workloads. Develop and refine TCP / IP networking solutions for market connectivity. Collaborate with traders, researchers, and engineers to deliver robust, production-ready systems. Explore opportunities to integrate AI / ML techniques into trading workflows, from signal generation to system optimization. What We’re Looking For Proficiency … performance-critical applications. Deep understanding of CPU architecture, cache optimization, memory management, and instruction pipelines . Exposure to Linux kernel-level programming and tuning . Solid knowledge of TCP / IP networking and experience building high-throughput, low-latency network applications. Proven track record of developing real-time, high-performance systems (finance, gaming, or More ❯

role will also allow you to work and learn from our Infrastructure, Communications, iSeries and Development Teams – semi-involved with various exciting streams of IT projects for 2025 / 26 year (examples - Office 2024 roll out / Improvements on ITSM, Windows 11 roll out to all User hardware and much more). Principal Accountabilities and Duties … . As we work closely with our parent company Arab Bank (Jordan) and our European Branches, we require supporting ad-hoc out of hours support on Bank Holidays / Weekends which is rota-based between the engineers in the team. Be an integral part of the Support team in supporting and delivering all aspect of services and full … and Hardware, AD Management, Asset Management, Ticket Queuing Management and general overall efficiency to deliver the best service we can to our Users. 1st and 2nd Line Troubleshooting / Root-Cause Analysis, Documentation write ups for Knowledge Base Articles Be the face and central point of all incoming IT queries and issues, with following ITIL best practice to More ❯

role will also allow you to work and learn from our Infrastructure, Communications, iSeries and Development Teams – semi-involved with various exciting streams of IT projects for 2025 / 26 year (examples - Office 2024 roll out / Improvements on ITSM, Windows 11 roll out to all User hardware and much more). Principal Accountabilities and Duties … . As we work closely with our parent company Arab Bank (Jordan) and our European Branches, we require supporting ad-hoc out of hours support on Bank Holidays / Weekends which is rota-based between the engineers in the team. Be an integral part of the Support team in supporting and delivering all aspect of services and full … and Hardware, AD Management, Asset Management, Ticket Queuing Management and general overall efficiency to deliver the best service we can to our Users. 1st and 2nd Line Troubleshooting / Root-Cause Analysis, Documentation write ups for Knowledge Base Articles Be the face and central point of all incoming IT queries and issues, with following ITIL best practice to More ❯

recommended countermeasures Support creation of incident response plans, SOPs, and security awareness documents Maintain security documentation, audit trails, and compliance reports Requirements Currently pursuing (or recently completed) B.Tech / BE / M.Tech / MSc in Cyber Security, Computer Science, IT, or related fields Strong understanding of networking basics, OSI model, TCP / IP, firewalls, VPNs, IDS / IPS Familiarity with Linux & Windows system administration commands Knowledge of penetration testing tools (Nmap, Wireshark, Burp Suite, Metasploit, etc.) Fundamentals of cryptography, authentication protocols & OWASP Top 10 Critical thinking, attention to detail, and a proactive learning mindset Nice to Have (Bonus) Certifications such as CEH, CompTIA Security+, ISO … even if in-progress) Familiarity with cloud security (AWS / GCP / Azure) Experience with SIEM tools (Splunk, ELK stack, QRadar, etc.) Participation in CTFs, bug bounty, or cybersecurity clubs / communities What You'll Get Real-time exposure to cybersecurity operations within a tech-driven product environment Hands-on training in vulnerability assessment More ❯

recommended countermeasures Support creation of incident response plans, SOPs, and security awareness documents Maintain security documentation, audit trails, and compliance reports Requirements Currently pursuing (or recently completed) B.Tech / BE / M.Tech / MSc in Cyber Security, Computer Science, IT, or related fields Strong understanding of networking basics, OSI model, TCP / IP, firewalls, VPNs, IDS / IPS Familiarity with Linux & Windows system administration commands Knowledge of penetration testing tools (Nmap, Wireshark, Burp Suite, Metasploit, etc.) Fundamentals of cryptography, authentication protocols & OWASP Top 10 Critical thinking, attention to detail, and a proactive learning mindset Nice to Have (Bonus) Certifications such as CEH, CompTIA Security+, ISO … even if in-progress) Familiarity with cloud security (AWS / GCP / Azure) Experience with SIEM tools (Splunk, ELK stack, QRadar, etc.) Participation in CTFs, bug bounty, or cybersecurity clubs / communities What You'll Get Real-time exposure to cybersecurity operations within a tech-driven product environment Hands-on training in vulnerability assessment More ❯

Sector experience preferred. MDM - JAMF or similar InTune etc. MacOS & iOS devices - support experience. Google Workspace - Office & Email Support. Support of End User Devices – iPhone & iPad. Windows 10 / 11 - support experience. Audio / Visual devices - Smart Boards, Projectors & Interactive Displays etc. Hardware & Software support - installation & deployment. IP Telephone support. Antivirus & Anti-Spam support. … Network Printer support. Basic Networking - Network Connectivity, Domian Controllers, Internet Access, Email, etc. Basic Networking - TCP / IP, DNS, VLAN, VPN, SSL & IPSec, Switches, Routers, Wi-Fi Aps. Basic Understanding - issues involved in administering & maintaining, LAN & Wireless Network, Firewalls etc. Good organizational skills, combined with a proactive approach. Excellent communication skills. Working Hours … Onsite Role - 8:30am - 4:30pm - with some flexibility to work from home during school holidays. Benefits Package: 27 Days Holiday + Bank Holidays / Pension Scheme / Free School Lunches / Training. Keywords: 2nd Line IT Support Engineer, IT Support Engineer, Education Sector, MacOS, iOS, JAMF, Google Workspace, 2nd Line IT Support, Apple More ❯

Sector experience preferred. MDM - JAMF or similar InTune etc. MacOS & iOS devices - support experience. Google Workspace - Office & Email Support. Support of End User Devices – iPhone & iPad. Windows 10 / 11 - support experience. Audio / Visual devices - Smart Boards, Projectors & Interactive Displays etc. Hardware & Software support - installation & deployment. IP Telephone support. Antivirus & Anti-Spam support. … Network Printer support. Basic Networking - Network Connectivity, Domian Controllers, Internet Access, Email, etc. Basic Networking - TCP / IP, DNS, VLAN, VPN, SSL & IPSec, Switches, Routers, Wi-Fi Aps. Basic Understanding - issues involved in administering & maintaining, LAN & Wireless Network, Firewalls etc. Good organizational skills, combined with a proactive approach. Excellent communication skills. Working Hours … Onsite Role - 8:30am - 4:30pm - with some flexibility to work from home during school holidays. Benefits Package: 27 Days Holiday + Bank Holidays / Pension Scheme / Free School Lunches / Training. Keywords: 2nd Line IT Support Engineer, IT Support Engineer, Education Sector, MacOS, iOS, JAMF, Google Workspace, 2nd Line IT Support, Apple More ❯

2nd Line IT Support Engineer London Bridge, SE1 Hybrid (1 week office / 1-week WFH) £38,000 £42,000 + training + bonus + perks Our client is a growing London-based MSP with a loyal client base and a reputation for going the extra mile. They re all about great service, teamwork and continuous improvement and … Recommending improvements and contributing to IT projects and rollouts What You ll Bring You re confident, curious and customer-focused, with: Strong hands-on experience with Windows 10 / 11 and macOS Solid understanding of LAN / WAN / Wi-Fi networking Proficiency in Windows Server 2012 / 2016 / 2019 and technologies like: Active Directory, Hyper-V, DNS, DHCP, DFS, ADFS, FAP Knowledge of PC setup , TCP / IP networking and system configuration Experience with cloud platforms such as Office 365, Google Workspace, AWS or Azure Why Join? Hybrid flexibility split your time between home and their London Bridge office Supportive More ❯

days per week in the office) Salary range: £75,000–£84,000 + benefits Tech: AWS (EC2, Lambda, RDS, Route53, ELBs, EKS), Terraform, Kubernetes, Docker, CI / CD (Jenkins, GitHub Actions, CodePipeline), Python / Bash, Ansible, Security frameworks (CIS, OWASP), ** Sponsorship and offshore remote are not available for this position** Immersum continue to support one of … teams to protect customer data and drive platform innovation. Key responsibilities include: Designing and maintaining secure, scalable AWS infrastructure with Terraform, Kubernetes and Docker. Embedding security into CI / CD pipelines (Jenkins, GitHub Actions, CodePipeline) through SAST / DAST and dependency scanning. Collaborating with developers and product teams to promote DevSecOps practices, threat modelling and secure … WAFs for secure web delivery. Responding to incidents and driving continuous improvement of platform security. Tech Stack: Cloud: AWS (EC2, Lambda, RDS, Route53, ELBs, EKS), plus some GCP / Azure exposure Infrastructure as Code: Terraform, Ansible Containers & Orchestration: Kubernetes, Docker CI / CD: Jenkins, GitHub Actions, AWS CodePipeline Monitoring: Prometheus, Grafana, ELK, CloudWatch Security: CIS, OWASP More ❯

days per week in the office) Salary range: £75,000–£84,000 + benefits Tech: AWS (EC2, Lambda, RDS, Route53, ELBs, EKS), Terraform, Kubernetes, Docker, CI / CD (Jenkins, GitHub Actions, CodePipeline), Python / Bash, Ansible, Security frameworks (CIS, OWASP), ** Sponsorship and offshore remote are not available for this position** Immersum continue to support one of … teams to protect customer data and drive platform innovation. Key responsibilities include: Designing and maintaining secure, scalable AWS infrastructure with Terraform, Kubernetes and Docker. Embedding security into CI / CD pipelines (Jenkins, GitHub Actions, CodePipeline) through SAST / DAST and dependency scanning. Collaborating with developers and product teams to promote DevSecOps practices, threat modelling and secure … WAFs for secure web delivery. Responding to incidents and driving continuous improvement of platform security. Tech Stack: Cloud: AWS (EC2, Lambda, RDS, Route53, ELBs, EKS), plus some GCP / Azure exposure Infrastructure as Code: Terraform, Ansible Containers & Orchestration: Kubernetes, Docker CI / CD: Jenkins, GitHub Actions, AWS CodePipeline Monitoring: Prometheus, Grafana, ELK, CloudWatch Security: CIS, OWASP More ❯

Infrastructure Engineer – Azure / Microsoft / Security £65,000 + Bonus + Benefits Hybrid – South West London (3 days onsite) Quant Capital are partnering with a fast-growing FinTech scale-up hiring an Infrastructure Engineer to own their core platform across cloud, networking and security. This role suits someone who understands high availability, engineers with discipline … and cares about building secure, reliable systems at scale. You’ll take technical ownership from day one. You’ll design, operate and improve hybrid Microsoft / Azure infrastructure while acting as a senior escalation point for the business. The Role Engineer, maintain and evolve hybrid Microsoft infrastructure Deliver uptime-focused projects across networking, cloud and security Drive hardening … and operational best practice Troubleshoot complex incidents and enable engineering teams Required Experience 5+ years in infrastructure engineering or systems engineering Strong Microsoft environment expertise: Windows Server, AD / Entra ID, Group Policy, O365, Intune Solid networking foundations: TCP / IP, VLANs, DNS, VPNs, Wi-Fi Security engineering knowledge: System hardening, endpoint More ❯

Infrastructure Engineer – Azure / Microsoft / Security £65,000 + Bonus + Benefits Hybrid – South West London (3 days onsite) Quant Capital are partnering with a fast-growing FinTech scale-up hiring an Infrastructure Engineer to own their core platform across cloud, networking and security. This role suits someone who understands high availability, engineers with discipline … and cares about building secure, reliable systems at scale. You’ll take technical ownership from day one. You’ll design, operate and improve hybrid Microsoft / Azure infrastructure while acting as a senior escalation point for the business. The Role Engineer, maintain and evolve hybrid Microsoft infrastructure Deliver uptime-focused projects across networking, cloud and security Drive hardening … and operational best practice Troubleshoot complex incidents and enable engineering teams Required Experience 5+ years in infrastructure engineering or systems engineering Strong Microsoft environment expertise: Windows Server, AD / Entra ID, Group Policy, O365, Intune Solid networking foundations: TCP / IP, VLANs, DNS, VPNs, Wi-Fi Security engineering knowledge: System hardening, endpoint More ❯

deliver reliable trading platforms across the enterprise. This is an opportunity to work hands-on with the latest Microsoft technologies - as well as core network infrastructure spanning LAN / WAN, Wi-Fi, firewalls, and cloud connectivity. You’ll contribute to service design and drive automation. The ideal candidate should bring strong TCP / IP networking fundamentals, proven scripting / automation skills (PowerShell or Python), and experience delivering cloud infrastructure (IaaS) and M365 deployments / migrations. Proficiency with Conditional Access, CI / CD pipelines, and Infrastructure-as-Code (e.g., Terraform) is essential. Additional exposure to Exchange Online / Server, Teams, SharePoint, OneDrive, desktop build / deploy automation (Windows 365 / AVD), and config management tools such as Ansible or Puppet will be highly advantageous. To secure the most relevant hire, my client is committed to offering a highly competitive package alongside excellent benefits and a collaborative environment where engineers can thrive and make a visible impact. Apply now via the link More ❯

deliver reliable trading platforms across the enterprise. This is an opportunity to work hands-on with the latest Microsoft technologies - as well as core network infrastructure spanning LAN / WAN, Wi-Fi, firewalls, and cloud connectivity. You’ll contribute to service design and drive automation. The ideal candidate should bring strong TCP / IP networking fundamentals, proven scripting / automation skills (PowerShell or Python), and experience delivering cloud infrastructure (IaaS) and M365 deployments / migrations. Proficiency with Conditional Access, CI / CD pipelines, and Infrastructure-as-Code (e.g., Terraform) is essential. Additional exposure to Exchange Online / Server, Teams, SharePoint, OneDrive, desktop build / deploy automation (Windows 365 / AVD), and config management tools such as Ansible or Puppet will be highly advantageous. To secure the most relevant hire, my client is committed to offering a highly competitive package alongside excellent benefits and a collaborative environment where engineers can thrive and make a visible impact. Apply now via the link More ❯

licensing * Contribute strategically to IT budgeting, vendor management and continuous service improvement initiatives * Provide high-level technical oversight and guidance in areas including: Azure infrastructure management, network protocols (TCP / IP, DHCP, DNS), firewall operations (preferably FortiGate), WAN / LAN / VPN connectivity, Microsoft and Windows Server environments Requirements * Proven … experience in infrastructure / IT operations management within a multi-site environment * Demonstrable experience managing third-party MSPs and IT vendors * Strong leadership and communication skills, with the ability to translate technical priorities into business outcomes * Solid understanding of networking and cloud technologies (Azure preferred) * Relevant certifications (e.g. ITIL, Azure) is highly desirable Initially 4 days per week More ❯

A10 Network Engineer (DV / SC Cleared) We are seeking an experienced A10 Network Engineer for a 6 month contract, inside IR35, supporting high-security environments. Youll be working on 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 … and processes in line with security compliance standards Essential Skills & Experience: Proven experience 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 load balancing, application delivery, and traffic optimisation Active More ❯

Endpoint Manager, Teams, Conditional Access) to meet organizational needs and following best practices Manage and optimise the Windows server estate, focusing on on-prem infrastructure based on VMware / Nutanix AHV and also cloud infrastructure platforms (Azure / AWS) Perform system maintenance, such as applying patches and updates to ensure availability, optimal performance and security of … IT infrastructure Monitor system performance and proactively identify / resolve issues Maintain detailed documentation of system setup, configuration, procedures and change Implement and manage security platforms including endpoint protection and patch management to protect data and shared IT infrastructure Manage backup solutions to ensure data recovery and resiliency Work as part of the Infrastructure and Systems Engineering team … Windows Server 2012-2022 and Microsoft 365 solutions with Exchange, Teams, Sharepoint, Endpoint Manager & Conditional Access. Solid understanding of Active Directory Services. Solid understanding of networking concepts, including TCP / IP, LAN / WAN. Scripting skills are desirable for automating routine tasks and deployments. Experience working in a financial markets trading environment More ❯

Endpoint Manager, Teams, Conditional Access) to meet organizational needs and following best practices Manage and optimise the Windows server estate, focusing on on-prem infrastructure based on VMware / Nutanix AHV and also cloud infrastructure platforms (Azure / AWS) Perform system maintenance, such as applying patches and updates to ensure availability, optimal performance and security of … IT infrastructure Monitor system performance and proactively identify / resolve issues Maintain detailed documentation of system setup, configuration, procedures and change Implement and manage security platforms including endpoint protection and patch management to protect data and shared IT infrastructure Manage backup solutions to ensure data recovery and resiliency Work as part of the Infrastructure and Systems Engineering team … Windows Server 2012-2022 and Microsoft 365 solutions with Exchange, Teams, Sharepoint, Endpoint Manager & Conditional Access. Solid understanding of Active Directory Services. Solid understanding of networking concepts, including TCP / IP, LAN / WAN. Scripting skills are desirable for automating routine tasks and deployments. Experience working in a financial markets trading environment More ❯

Network Engineer – Low Latency Trading Environment Up to £120,000 + Bonus Remote (UK / Europe) | London Office (Moorgate) We're working with an elite trading technology firm building high-performance, low-latency connectivity solutions powering global financial markets. They’re looking for a Network Infrastructure Engineer to join their SRE and Infrastructure team — helping to design, automate … alongside highly skilled engineers in a modern DevOps-driven culture — this one’s for you. The Role Research, design, deploy and support new and existing networks (hardware, routing / switching, telco circuits, low-latency technologies, data centre connectivity). Use “Network as Code” principles – automate with Ansible , Terraform , and coding in Python / Bash . Develop … as a Network Engineer or Systems Administrator — ideally both. Hands-on coding ability Automation experience – Ansible , Terraform , scripting in Python or Bash . Understanding of low-latency networking (TCP / IP, Multicast – IGMP / PIM, Layer2 / 3, WAN). Familiarity with BGP , EVPN , Arista or Cumulus Linux , and firewall More ❯

Network Engineer Low Latency Trading Environment Up to 120,000 + Bonus Remote (UK / Europe) | London Office (Moorgate) We're working with an elite trading technology firm building high-performance, low-latency connectivity solutions powering global financial markets. Theyre looking for a Network Infrastructure Engineer to join their SRE and Infrastructure team helping to design, automate, and … working alongside highly skilled engineers in a modern DevOps-driven culture this ones for you. The Role Research, design, deploy and support new and existing networks (hardware, routing / switching, telco circuits, low-latency technologies, data centre connectivity). Use Network as Code principles automate with Ansible , Terraform , and coding in Python / Bash . Develop … as a Network Engineer or Systems Administrator ideally both. Hands-on coding ability Automation experience Ansible , Terraform , scripting in Python or Bash . Understanding of low-latency networking (TCP / IP, Multicast IGMP / PIM, Layer2 / 3, WAN). Familiarity with BGP , EVPN , Arista or Cumulus Linux , and firewall More ❯

Network Engineer – Low Latency Trading Environment Up to £120,000 + Bonus Remote (UK / Europe) | London Office (Moorgate) We're working with an elite trading technology firm building high-performance, low-latency connectivity solutions powering global financial markets. They’re looking for a Network Infrastructure Engineer to join their SRE and Infrastructure team — helping to design, automate … alongside highly skilled engineers in a modern DevOps-driven culture — this one’s for you. The Role Research, design, deploy and support new and existing networks (hardware, routing / switching, telco circuits, low-latency technologies, data centre connectivity). Use “Network as Code” principles – automate with Ansible , Terraform , and coding in Python / Bash . Develop … as a Network Engineer or Systems Administrator — ideally both. Hands-on coding ability Automation experience – Ansible , Terraform , scripting in Python or Bash . Understanding of low-latency networking (TCP / IP, Multicast – IGMP / PIM, Layer2 / 3, WAN). Familiarity with BGP , EVPN , Arista or Cumulus Linux , and firewall More ❯

to customers as well as back into the product, engineering and integration organizations. Job Responsibilities: Learn to effectively communicate DomainTools technical architecture, product capabilities and assist in prospect / customer awareness and adoption of our products and services. Collaborate with customers and internal teams to design tailored solutions that meet specific customer requirements. Deliver technical product presentations and … demonstrations, to showcase how DomainTools solutions address customer needs and to get the Technical Win. Collaborate with Regional Sales Directors / Expansion Managers & Renewals Managers to deliver targeted demonstrations that tie in our products’ capabilities to desired customer use-cases. Become an expert in delivery of the DomainTools Engage training program with a view towards enabling our customers … Ensure excellent service and support for customers by creating long-term business relationships, create innovative solutions to push user adoption and maximize the value of our products and / or integrations. Utilize Confluence, Jira, Zendesk and Salesforce to track all pertinent information related to products, features, bugs, opportunities, and accounts. International Travel may be required (~40%) Requirements: Demonstrable More ❯