1 to 25 of 44 TCP/IP Jobs in London

Infrastructure Engineer - DV Cleared

Hiring Organisation
JLA Resourcing Ltd
Location
Twickenham, London, United Kingdom
Employment Type
Contract
Contract Rate
£600-650 a day Inside IR35
Leading and implementing infrastructure and network change activities. Administering Windows Server environments including AD, DNS, DHCP and Group Policy. Supporting Linux environments (Ubuntu / CentOS). Working with networking technologies including TCP / IP, load balancing and firewalls. Supporting Microsoft stack technologies … experience (2008–2025). Deep knowledge of Active Directory, DNS, DHCP and Group Policy. Experience installing and configuring Windows Server and Windows 10 / 11 environments. Good Linux administration skills (Ubuntu / CentOS). Knowledge of networking technologies including TCP / IP ...

Technical Account Manager, Equities & FX

Hiring Organisation
OneChronos
Location
London Area, United Kingdom
Guide clients through onboarding and testing, ensuring adherence to MTF requirements and trading rules. Troubleshoot client connectivity or trading issues (including FIX sessions, TCP / IP connectivity, firewall or routing matters), escalating to technology & engineering teams where necessary. Trading & Market Technical Operations Monitor live … client connectivity or technical infrastructure. Strong knowledge of European financial markets, particularly equities and FX trading landscape. Familiarity with Networking, networking fundamentals (TCP / IP, multicast, firewalls, VPNs), FIX protocol, market data feeds, and order / trade lifecycle processes. ...

TOC Network Engineer, Cingularity

Hiring Organisation
IMG
Location
City of London, London, United Kingdom
distribution services to premium broadcast networks and sports rights holders globally. Please follow this link to understand more about Cingularity’s work: https: / / cingularity.tv / what-we-do / IMG acquired Cingularity in September 2022 to provide the expertise … sales, multi-channel content production and distribution, brand partnerships, strategic consulting, digital services, and events management. It powers growth of revenues, fanbases and IP for more than 200 federations, associations, events, and teams, including the National Football League, English Premier League, International Olympic Committee, National Hockey League, Major ...

Senior Network Engineer, Cingularity

Hiring Organisation
IMG
Location
London Area, United Kingdom
sales, multi-channel content production and distribution, brand partnerships, strategic consulting, digital services, and events management. It powers growth of revenues, fanbases and IP for more than 200 federations, associations, events, and teams, including the National Football League, English Premier League, International Olympic Committee, National Hockey League, Major … distribution services to premium broadcast networks and sports rights holders globally. Please follow this link to understand more about Cingularity’s work: https: / / cingularity.tv / what-we-do / IMG acquired Cingularity in September 2022 to provide the expertise ...

Service Desk Technician

Hiring Organisation
Prism Digital
Location
City of London, London, United Kingdom
confident explaining technical issues in simple terms. What You’ll Work With Windows 11 MacOS Microsoft 365 Active Directory Okta Google Workspace LAN / WAN / TCP / IP networking VoIP systems Service desk ticketing platforms Identity and access management … tools Nice to Haves ITIL Foundation (or strong understanding of lifecycle principles) Okta administration PIM / Parallels Experience supporting media, broadcast or production environments Multi-tenant Microsoft 365 environments Why Join / Projects You’ll be joining a large but close-knit technical operations team within ...

Senior Network Engineer

Hiring Organisation
IMT Resourcing Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
environment Strong team leadership combined with hands-on network engineering Solid knowledge of routing, switching, and wireless technologies Experience with MPLS / VPLS, BGP, and TCP / IP / OSI models Expertise in Juniper environments (including RSVP MPLS, VPLS, dual ...

Sales Engineer (UK home based, current SC cleared) - UNITED KINGDOM (Remote)

Hiring Organisation
Park Lane Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £120,000 per annum
public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a strong Government / Public Sector background and current SC clearance. Key Requirements: We are looking for a client-facing technical expert with deep presales experience, capable of operating … success supporting UK Government or public sector clients Ability to translate technical challenges into clear commercial value Cisco routing, switching, gateways, and applications TCP / IP, SNMP, Netflow, VoIP LAN / WAN topologies (MPLS, Frame Relay, ATM) Security concepts and network infrastructure ...

OneTrust Integration Engineer

Hiring Organisation
RED Global
Location
City of London, London, United Kingdom
Contract We need a skilled IT Engineer to integrate OneTrust Data Discovery across systems handling personal data. You’ll gather technical data, open / validate network paths, and work with SMEs to deploy and configure worker nodes and connectors. Key Deliverables Onboard prioritized assets into OneTrust Document connectivity … / setup for each application Complete initial catalog scans with ICRM Develop SOPs for onboarding, credentials, and change control Technical Skills OS: Windows Server, Linux (RHEL, Ubuntu) Databases / Stores: SQL Server, Oracle, PostgreSQL, MySQL, MongoDB, SMB / NFS, SharePoint, OneDrive Networking: TCP ...

Technical Sales Engineer

Hiring Organisation
Hyerhub
Location
London Area, United Kingdom
public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a strong Government / Public Sector background and current SC clearance . Key Requirements We are looking for a client-facing technical expert with deep presales experience, capable … commercial value Confident at C-Suite Level and able to hold customer meetings onsite Strong expertise in: Cisco routing, switching, gateways, and applications TCP / IP, SNMP, Netflow, VoIP LAN / WAN topologies (MPLS, Frame Relay, ATM) Security concepts and network infrastructure ...

Technical Leader

Hiring Organisation
Colt Technology Services UK
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
hours support for priority incidents. What were looking for Required Technical Skills Windows & VDI Advanced administration and troubleshooting of Windows Server (2016 / 2019 / 2022). Strong knowledge of Active Directory, Group Policy, DNS, DHCP, and PKI. Strong knowledge of Citrix Virtual Apps and Desktops … architecture, governance, and cost optimization. Familiarity with automation tools (PowerShell, Terraform) and DevOps principles. Virtualization, Storage & Networking (Working Knowledge) Understanding of VMware vSphere / ESXi architecture and clustering concepts. Familiarity with enterprise storage technologies (e.g., Pure Storage, HPE) and SAN / NAS fundamentals. Solid grasp ...

Application Support Engineer – Endpoint Security

Hiring Organisation
TDA
Location
City of London, London, United Kingdom
diagnostics — not web development. What you’ll do: Lead web integration & compatibility (auth flows, cookies, headers, browser behaviour) Troubleshoot issues across browser, proxy / isolation, and application layers Work closely with security & network teams to resolve complex issues Document configurations, fixes, and known issues What we’re looking … Strong web fundamentals & browser troubleshooting experience Knowledge of proxies, DNS, TCP / IP, and networking basics Experience with Menlo Security (or similar) (Island.io, Prisma Browser, Chromium, SURF) Scripting (Python / Bash) and cloud exposure (AWS / Azure / ...

Senior Infrastructure Engineer

Hiring Organisation
Context Recruitment
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £80000/annum
Responsibilities: Lead the assessment, integration and consolidation of IT environments during mergers and acquisitions Manage core office and site networks, including LAN / WAN, VPNs, IP addressing and firewall operations (FortiGate) Conduct audits of IT infrastructure, cloud environments (Azure, AWS) and enterprise applications (ERP, CRM) Plan … escalation point for complex issues Essential Skills & Experience: Strong expertise in Azure, Microsoft 365, Windows Server and hybrid cloud environments Networking: TCP / IP, DHCP, DNS, routing, switching, VPNs, firewall configuration; CCNA / CCNP preferred Active Directory and identity management, including multi ...

Network Security Engineer

Hiring Organisation
BTC Capital Markets Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 45,000 - 50,000 Annual
Network Security Engineer BTCC Location: To Be Confirmed Contract Type: Full-Time, Permanent Working Model: On-site / Hybrid (as applicable) Industry: Cryptocurrency / Blockchain / Fintech About BTCC Founded in 2011, BTCC is one of the world s longest-running cryptocurrency exchanges, delivering … organisational and regulatory requirements. What You Bring 3 5 years of hands-on experience in network security engineering. Strong understanding of networking principles, TCP / IP, routing, switching, and firewall technologies. Proven experience managing FortiGate firewalls and FortiSASE solutions. Familiarity with ...

Network Security Engineer

Hiring Organisation
BTC Capital Markets Ltd
Location
SE1, Chaucer, Greater London, United Kingdom
Employment Type
Permanent, Contract
Salary
£45000 - £50000/annum
Network Security Engineer | BTCC Location: [To Be Confirmed] Contract Type: Full-Time, Permanent Working Model: On-site / Hybrid (as applicable) Industry: Cryptocurrency / Blockchain / Fintech About BTCC Founded in 2011, BTCC is one of the world’s longest-running cryptocurrency exchanges, delivering … organisational and regulatory requirements. What You Bring 3–5 years of hands-on experience in network security engineering. Strong understanding of networking principles, TCP / IP, routing, switching, and firewall technologies. Proven experience managing FortiGate firewalls and FortiSASE solutions. Familiarity with ...

Cyber Security Engineer

Hiring Organisation
Transact
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 per annum
team you will help to design, develop, and mature the companys cyber security capability, including the selection, implementation, and management of security tools / technologies, focused on detection, prevention, and analysis of security threats. This role offers a great opportunity to help define and shape the security function … network protocols: knowledge of standard network protocols like TCP, ARP, ICMP, DHCP, DNS, HTTP, SNMP, VPN etc., and accompanying protocol / packet analysis / manipulation tools. Understanding of key operating systems and network appliances and the ability to assess their security ...

Senior Infrastructure Engineer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
Title: Senior Infrastructure Engineer Location: London / Hybrid (2 days in office) / Monthly travel to Leeds Salary: Up to £80,000 with incredible benefits Why Apply? Work with an innovative fintech organisation that serves millions of customers and is investing heavily in cloud-first technologies … premises, and third-party environments using SDWAN, ExpressRoute, site-to-site VPNs, and remote VPNs. Manage office network connectivity, including core / access switching, WiFi APs and controllers, firewalls, and 802.1x authentication. Deploy Infrastructure as Code using ARM templates, Bicep, or Terraform for scalable and consistent network builds. ...

2nd Line IT Support Engineer

Hiring Organisation
SER Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
£34000 - £38000/annum Hybrid Working
Policy, Office 365 & SharePoint Microsoft Exchange Virtualisation (Hyper-V, VMware, WVD) Backup & Disaster Recovery solutions Cyber Security (MFA, EDR, AV, Incident Response) Networking (TCP / IP, DNS, DHCP, LAN / WAN) Windows & macOS environments Experience supporting mobile devices Strong troubleshooting and problem ...

2nd Line IT Support Engineer

Hiring Organisation
SER (Staffing) Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£34,000 - £38,000 per annum
Active Directory, Group Policy, Office 365 & SharePointMicrosoft ExchangeVirtualisation (Hyper-V, VMware, WVD)Backup & Disaster Recovery solutionsCyber Security (MFA, EDR, AV, Incident Response)Networking (TCP / IP, DNS, DHCP, LAN / WAN)Windows & macOS environmentsExperience supporting mobile devicesStrong troubleshooting and problem-solving abilityPassion ...

AWS Architect

Hiring Organisation
Henderson Scott
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£550 - £575 per day
Architect | £600 per day (Inside IR35)- Active SC Clearance required Location: United Kingdom (Remote / Hybrid) Duration: 6 Months Initial Rate: £600 per day (Inside IR35) An exciting opportunity has arisen for a seasoned AWS Architect to join one of the largest AWS-based platforms in the UK. … Expert AWS Knowledge: Deep understanding of core services including VPCs, subnets, EC2, Lambda, S3, Route 53, and VPC endpoints. Networking: Strong grasp of TCP / IP, DNS, routing, and proxy patterns. Containers: Good broad architectural understanding of Containers and Kubernetes. Documentation & Communication: Proven ability ...

3rd Line Support Engineer

Hiring Organisation
Fortray Global Service Limited
Location
City of London, London, United Kingdom
related field Minimum 4–6+ years of experience in IT support with strong exposure to L3 environments Advanced knowledge of Windows / Linux operating systems and enterprise infrastructure Strong understanding of networking concepts (DNS, DHCP, TCP / IP, VPNs) Experience with virtualization … stakeholder management abilities Mandatory Certification (at least one): Microsoft Certified: Azure Administrator Associate Cisco Certified Network Associate (CCNA) or higher ITIL Foundation / ITIL Intermediate VMware Certified Professional (VCP) Preferred Qualifications Experience with Microsoft Azure, Amazon Web Services, or Google Cloud Platform Familiarity with monitoring tools (e.g., Nagios ...

IT Security Engineer

Hiring Organisation
Langley James Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£50,000
have a Essential Strong passion for IT Security Knowledge and experience of as many of the following is highly desirable Working knowledge of TCP / IP, DNS, LAN / WAN, Networking and Operating System concepts. Working knowledge and experience of vulnerability scanning ...

1st / 2nd Support Engineer - Vauxhall, London (Office-Based)

Hiring Organisation
Adecco
Location
Vauxhall, London, United Kingdom
Employment Type
Permanent
Salary
£30000 - £35000/annum + Benefits
/ 2n d Support Enginer Location: Vauxhall, London (Office-Based) Employment Type: Full-Time Salary: £30-35,000 per annum + permanent benefits We are seeking an experienced and service-oriented Support Engineer to provide high-quality technical support within a busy and fast-paced environment. The successful … tools Configure and maintain laptops, desktops, mobile devices, and associated peripherals Administer user accounts within Active Directory and Microsoft 365 Support Windows 10 / 11 operating systems and commonly used business applications Maintain accurate technical documentation and asset registers Escalate complex or high-priority incidents to senior engineers ...

Media Systems Engineer

Hiring Organisation
Iron Mountain
Location
Feltham, England, United Kingdom
Linux and macOS systems administration, including a solid understanding of networking fundamentals such as Transmission Control Protocol / Internet Protocol (TCP / IP) and Virtual Local Area Networks (VLANs). Proven ability ...

2nd Line Engineer

Hiring Organisation
Set2Recruit
Location
London Area, United Kingdom
4+ years’ IT support experience , ideally within an MSP environment Strong knowledge of Microsoft Azure and Microsoft 365 (O365) Networking expertise is essential (TCP / IP, DNS, DHCP, VLANs, firewalls) Experience with Windows Server (Active Directory, Group Policy, etc.) Good understanding of IT security ...

Network Security Engineer

Hiring Organisation
Infoplus Technologies UK Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £300 to £350 per day
Juniper, Cisco Project experience preferably in migration Network infrastructure and application flow through firewalled environment Demonstrate an expert understanding of networking protocols including TCP / IP and Ethernet protocols Expert design knowledge of IP based networking architecture Understanding of IGP & BGP IP … language Python Proven experience in working on large scale project Planning, coordination and execution of assigned network delivery project Perform coordination with internal / external vendor, internal bank personnel and other stakeholder for matter relating to network delivery Ensure compliance on work carried out against the bank standard ...