1 to 25 of 77 TCP/IP Jobs in the City of 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 ❯

more secure. Take a look at our website here to learn more about why we’re one of the leading global Cyber Security and Risk Mitigation business... https: / / www.nccgroup.com / uk / The Opportunity: As a Malware Analyst you will lead efforts in detecting, analyzing, and mitigating malware threats to … with programming languages such as Python, C++, or assembly for developing analysis tools and scripts. Expertise in creating and maintaining YARA rules. Strong understanding of networking protocols, including TCP / IP, DNS, and how malware utilises these protocols. Ways of working Focusing on Clients and Customers. Working as One NCC. Always Learning. Being Inclusive More ❯

more secure. Take a look at our website here to learn more about why we’re one of the leading global Cyber Security and Risk Mitigation business... https: / / www.nccgroup.com / uk / The Opportunity: As a Malware Analyst you will lead efforts in detecting, analyzing, and mitigating malware threats to … with programming languages such as Python, C++, or assembly for developing analysis tools and scripts. Expertise in creating and maintaining YARA rules. Strong understanding of networking protocols, including TCP / IP, DNS, and how malware utilises these protocols. Ways of working Focusing on Clients and Customers. Working as One NCC. Always Learning. Being Inclusive More ❯

Diploma in Computer Science, Electrical Engineering, or a related field. Technical Skills: Strong understanding of server operations and hardware components. Proficiency with Linux systems for troubleshooting server software / hardware issues. Basic knowledge of network concepts including MAC, Subnet, and TCP / IP. Familiarity with out-of-band / lights-out server … management (e.g., IPMI). Ability to read, understand, and run simple Shell / Bash scripts. Soft Skills: Strong problem-solving and analytical abilities. Good communication skills in English and ability to work effectively in a team. High sense of responsibility, enthusiasm for technical challenges, and ability to work under pressure. Capable of working independently with minimal supervision. Skillset … Summary: Server Operations & Maintenance Linux OS Troubleshooting Hardware Installation & Lifecycle Management Network Fundamentals (TCP / IP, MAC, Subnet) Scripting (Shell / Bash) Asset Management & Ticketing Systems IPMI and Remote Server Management More ❯

Diploma in Computer Science, Electrical Engineering, or a related field. Technical Skills: Strong understanding of server operations and hardware components. Proficiency with Linux systems for troubleshooting server software / hardware issues. Basic knowledge of network concepts including MAC, Subnet, and TCP / IP. Familiarity with out-of-band / lights-out server … management (e.g., IPMI). Ability to read, understand, and run simple Shell / Bash scripts. Soft Skills: Strong problem-solving and analytical abilities. Good communication skills in English and ability to work effectively in a team. High sense of responsibility, enthusiasm for technical challenges, and ability to work under pressure. Capable of working independently with minimal supervision. Skillset … Summary: Server Operations & Maintenance Linux OS Troubleshooting Hardware Installation & Lifecycle Management Network Fundamentals (TCP / IP, MAC, Subnet) Scripting (Shell / Bash) Asset Management & Ticketing Systems IPMI and Remote Server Management More ❯

conduct in all interactions Resilience and adaptability in the face of change A collaborative mindset, supporting others to deliver shared outcomes Essential Skills Proficiency in: Windows OS (installation / troubleshooting) Active Directory, Azure / Office365 / SharePoint Networking protocols: OSI model, TCP / IP, HTTP / More ❯

conduct in all interactions Resilience and adaptability in the face of change A collaborative mindset, supporting others to deliver shared outcomes Essential Skills Proficiency in: Windows OS (installation / troubleshooting) Active Directory, Azure / Office365 / SharePoint Networking protocols: OSI model, TCP / IP, HTTP / 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 ❯

Sales Engineer – Networks, SD-WAN & Cyber Security London | Hybrid 3 days / week | Competitive + Benefits £45 / 60k (DOE) + bonus We’re partnering with a rapidly growing, award-winning UK MSP to hire a Sales Engineer to support presales and solution consulting across Networks, SD-WAN, SASE, and Cyber Security. This is a hands … What We’re Looking For: Experience in Managed IT, networking, or telecoms. Solid technical knowledge across at least two areas: Networking, SD-WAN, SASE, Cyber Security. Understanding of TCP / IP, L2 / L3 switching, OSPF / BGP, firewalls, VPNs, and wireless networking principles. Excellent communication and problem-solving skills. … Agile, organised, and capable of managing multiple projects simultaneously. Nice-to-Haves: Presentation skills and commercial awareness. Technical certifications relevant to networking or security. Familiarity with Private / Public Cloud environments. This is an exciting opportunity to grow your technical and presales expertise in a high-performing, client-focused environment. More ❯

Sales Engineer – Networks, SD-WAN & Cyber Security London | Hybrid 3 days / week | Competitive + Benefits £45 / 60k (DOE) + bonus We’re partnering with a rapidly growing, award-winning UK MSP to hire a Sales Engineer to support presales and solution consulting across Networks, SD-WAN, SASE, and Cyber Security. This is a hands … What We’re Looking For: Experience in Managed IT, networking, or telecoms. Solid technical knowledge across at least two areas: Networking, SD-WAN, SASE, Cyber Security. Understanding of TCP / IP, L2 / L3 switching, OSPF / BGP, firewalls, VPNs, and wireless networking principles. Excellent communication and problem-solving skills. … Agile, organised, and capable of managing multiple projects simultaneously. Nice-to-Haves: Presentation skills and commercial awareness. Technical certifications relevant to networking or security. Familiarity with Private / Public Cloud environments. This is an exciting opportunity to grow your technical and presales expertise in a high-performing, client-focused environment. 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 ❯

Engineering , Financial Mathematics , or a similar quantitative field. 2–5 years’ experience in a software development or quantitative role. Strong programming skills in Python, C, C++, SQL , and / or C# . Solid understanding of Linux systems. Nice-to-haves Familiarity with TypeScript, React, and SASS / SCSS is a plus. Understanding of financial derivatives , including … volatility modelling and stochastic calculus , is beneficial. Knowledge of networking protocols (TCP / IP, FIX, multicast / unicast, ZeroMQ / RabbitMQ) advantageous. Excellent communication skills, with a collaborative and results-driven mindset . This is a fantastic opportunity for a Front Office Developer seeking to work on impactful technology in More ❯

Engineering , Financial Mathematics , or a similar quantitative field. 2–5 years’ experience in a software development or quantitative role. Strong programming skills in Python, C, C++, SQL , and / or C# . Solid understanding of Linux systems. Nice-to-haves Familiarity with TypeScript, React, and SASS / SCSS is a plus. Understanding of financial derivatives , including … volatility modelling and stochastic calculus , is beneficial. Knowledge of networking protocols (TCP / IP, FIX, multicast / unicast, ZeroMQ / RabbitMQ) advantageous. Excellent communication skills, with a collaborative and results-driven mindset . This is a fantastic opportunity for a Front Office Developer seeking to work on impactful technology in More ❯

Our IT Solutions client is in the market for an experienced Sales Engineer to support Presales / Solution Consultants and Sales Teams across all Four Pillars of the solution designs, with a primary focus on Networks, SD-WAN, SASE and Cyber Security. Bridging the gap between our front-end and back-end Engineering-led business functions, our Sales … opportunity cycle from both a technical & commercial perspective. Able to quickly qualify new opportunities, both technically & commercially. Able to effectively respond to technical, functional & commercial elements of RFIs / RFPs / BAFOs. Able to architect and propose innovative validated designs which address the identified business & technical objectives for a prospect or customer. Design and deliver detailed … task or duty assigned to you by your manager, or other senior staff member of Exponential-e Ltd. Knowledge and experience required: Demonstratable interest in the Managed IT / Telecommunications industry. Demonstratable technical experience in at least two of our Cornerstones. Working knowledge in common networking principles & protocols such as: L2-L4 TCP / More ❯