20 network consultant jobs found in London

Network & Cloud Infrastructure Consultant - 1 month Contract (SOW) - Outside IR35 - Remote (Ad-hoc travel to Central London) We are looking for an experienced Network & Cloud Infrastructure Consultant to deliver a fixed-scope engagement supporting deployment of a quantum computing platform into a London-based innovation lab, covering design, implementation, testing, documentation, and handover. Key Responsibilities Design Layer 2/3 network architecture, including BGP routing where appropriate Implement MikroTik routing and GCP networking, including VPC, Firewalling, and IAM-aware access models Integrate and validate hybrid connectivity via Digital Realty ServiceFabric or equivalent Deploy and validate test rigs, supporting production deployment and commissioning Produce technical documentation, handover materials, and a final report What You Will Ideally Bring Strong enterprise/datacentre networking background, deep in Layer 2/3, BGP, and...

Join a global financial services organisation where your network security expertise will drive critical infrastructure transformation and shape the future of secure banking operations. Salary:  £600 - 650 per day Principal Network Security Consultant A Global Financial Services Organisation requires a Contract Principal Network Security Consultant with deep expertise across network security architecture, WAF, F5, firewalls, network segmentation, VPNs and legacy on-prem infrastructure. IR35 Status: Outside Day Rate: £600-£650pd Travel: 2 days a week in Central London Office Duration: Initial 6 months Responsibilities: Lead the refresh of the organisation's network security architecture and roadmap, providing senior technical direction across a complex, predominantly on-prem environment within a highly regulated banking/CNI setting Provide deep network security expertise across WAF, network segmentation, firewall...

Job Title: Network & Security Consultant Day Rate: £400-450 per day - Outside IR35/Limited Company Duration: 6 months initially Location: Central London - Fully onsite Start Date: ASAP Role We are assisting a client who require an experienced Cisco Network & Security Consultant to support a network and security infrastructure refresh, covering the deployment of Cisco Secure Firewall technology alongside a Cisco switching migration. This role requires strong technical capability across both network security and enterprise networking, with particular emphasis on Cisco Secure Firewall and advanced BGP. Key Responsibilities Design and deployment of a new Cisco Secure Firewall Management Center (FMC) High Availability pair Deployment and configuration of HA pair Cisco Secure Firewalls Migration of existing Legacy Firewall configurations to the new environment Review and optimisation of migrated configurations in line with current Cisco and security best practices...

Job Title: Network & Security Consultant Day Rate: £400-450 per day - Outside IR35/Limited Company Duration: 6 months initially Location: Central London - Fully onsite Start Date: ASAP Role We are assisting a client who require an experienced Cisco Network & Security Consultant to support a network and security infrastructure refresh, covering the deployment of Cisco Secure Firewall technology alongside a Cisco switching migration. This role requires strong technical capability across both network security and enterprise networking, with particular emphasis on Cisco Secure Firewall and advanced BGP. Key Responsibilities Design and deployment of a new Cisco Secure Firewall Management Center (FMC) High Availability pair Deployment and configuration of HA pair Cisco Secure Firewalls Migration of existing Legacy Firewall configurations to the new environment Review and optimisation of migrated configurations in line with current Cisco and...

Job Title: Network & Security Consultant Day Rate: £400-450 per day - Outside IR35 / Limited Company Duration: 6 months initially Location: Central London - Fully onsite Start Date: ASAP Role We are assisting a client who require an experienced Cisco Network & Security Consultant to support a network and security infrastructure refresh, covering the deployment of Cisco Secure Firewall technology alongside a Cisco switching migration. This role requires strong technical capability across both network security and enterprise networking, with particular emphasis on Cisco Secure Firewall and advanced BGP. Key Responsibilities Design and deployment of a new Cisco Secure Firewall Management Center (FMC) High Availability pair Deployment and configuration of HA pair Cisco Secure Firewalls Migration of existing legacy firewall configurations to the new environment Review and optimisation of migrated configurations in line with current Cisco and...

Job Title: Network & Security Consultant Day Rate: £400-450 per day - Outside IR35 / Limited Company Duration: 6 months initially Location: Central London - Fully onsite Start Date: ASAP Role We are assisting a client who require an experienced Cisco Network & Security Consultant to support a network and security infrastructure refresh, covering the deployment of Cisco Secure Firewall technology alongside a Cisco switching migration. This role requires strong technical capability across both network security and enterprise networking, with particular emphasis on Cisco Secure Firewall and advanced BGP. Key Responsibilities Design and deployment of a new Cisco Secure Firewall Management Center (FMC) High Availability pair Deployment and configuration of HA pair Cisco Secure Firewalls Migration of existing legacy firewall configurations to the new environment Review and optimisation of migrated configurations in...

Principal Network Security Consultant A Global Financial Services Organisation requires a Contract Principal Network Security Consultant with deep expertise across network security architecture, WAF, F5, firewalls, network segmentation, VPNs and Legacy on-prem infrastructure. IR35 Status: Outside Day Rate: £600-£650pd Travel: 2 days a week in Central London Office Duration: Initial 6 months Responsibilities: Lead the refresh of the organisation's network security architecture and roadmap, providing senior technical direction across a complex, predominantly on-prem environment within a highly regulated banking/CNI setting. Provide deep network security expertise across WAF, network segmentation, Firewall architecture and rule sets, VPN connectivity and Legacy network infrastructure, acting as a senior consultant rather than a hands-on engineer. Drive the ongoing uplift of the F5 environment, with strong experience across F5 technologies essential; exposure to Palo...

VMware Consultant VCF Outside IR35 Contract VMware Consultant - VCF & NSX Specialist Contract Outside IR35 Remote We're working with a number of enterprise organisations looking for experienced VMware Consultants to support large-scale infrastructure transformation and cloud modernisation projects. This is an excellent opportunity to join high-profile programmes delivering VMware Cloud Foundation (VCF), NSX and enterprise migration projects for well-known organisations. What you'll be doing Deploying and configuring VMware Cloud Foundation (VCF) environments. Working with vSphere, SDDC Manager and VMware infrastructure technologies. Designing and implementing NSX networking and micro-segmentation solutions. Supporting enterprise infrastructure transformation and cloud migration projects. Providing technical consultancy throughout project lifecycles, from proof of concept through to production deployment. Working closely with architects, engineers and customer...

Join a technically ambitious environment where your Linux and HPC expertise will make an immediate impact on complex computational infrastructure. HPC & Linux Infrastructure Consultant Cambridge (Hybrid) £500-£550 / Day Outside IR35 - 3 Month Contract A genuinely hands-on HPC opportunity for an engineer who enjoys getting stuck into complex infrastructure. This is an opportunity to join a technically ambitious environment where your Linux and HPC expertise will have an immediate impact. You'll be brought in to assess and improve an existing computational platform, while also helping keep the underlying infrastructure running reliably day to day. You'll have the freedom to identify where things can be improved, make recommendations, and then get involved in delivering those changes. Role Style & Setup: This is a hands-on consulting engagement, rather than a pure review or advisory assignment. You'll work alongside the existing...

Join a technically ambitious environment where your Linux and HPC expertise will make an immediate impact on complex computational infrastructure. HPC & Linux Infrastructure Consultant Cambridge (Hybrid) £500-£550 / Day Outside IR35 - 3 Month Contract A genuinely hands-on HPC opportunity for an engineer who enjoys getting stuck into complex infrastructure. This is an opportunity to join a technically ambitious environment where your Linux and HPC expertise will have an immediate impact. You'll be brought in to assess and improve an existing computational platform, while also helping keep the underlying infrastructure running reliably day to day. You'll have the freedom to identify where things can be improved, make recommendations, and then get involved in delivering those changes. Role Style & Setup: This is a hands-on consulting engagement, rather than a pure review or advisory assignment. You'll work alongside the existing...

Prisma Access Consultant - Contract Location: UK Wide (Have to be a UK resident) Contract: 12 Months Day Rate: £500-£600 per day Outside IR35 We're looking for a highly experienced Prisma Access Consultant to join a major enterprise security programme, delivering hands-on Palo Alto Networks Prisma Access solutions across complex environments. This is a hands-on technical delivery role , so we need someone who has genuinely configured, deployed, migrated and troubleshot Prisma Access in live enterprise environments - not someone who has only worked at architecture or presales level. What you'll be doing Delivering Prisma Access implementations end-to-end , including service infrastructure, service connections, remote networks and mobile users. Designing, configuring and troubleshooting GlobalProtect environments. Building and managing security policies using App-ID, User-ID, URL Filtering and Threat Prevention . Configuring and troubleshooting IPsec VPNs...

Job Title: Information Security Cloud Consultant/Architect - AWS & Azure Day Rate: £600 per day - Outside IR35/Limited Company Duration: 3+ months Based: Hybrid - Liverpool Start Date: ASAP Role We are seeking an experienced Information Security Cloud Consultant/Architect for an initial 3 month engagement, supporting the design, assurance and implementation of secure multi-cloud environments across AWS and Microsoft Azure. The role will provide specialist security architecture consultancy and independent design assurance for new cloud-based services and solutions, including cloud environments supporting the client's developing AI strategy, AI services and data platforms. Responsibilities Provide security architecture consultancy across AWS and Azure projects. Review and assure cloud solution designs against security standards, policies and architecture principles. Develop secure reference architectures, patterns and guardrails for multi-cloud environments. Support...

Network Security Engineer (SC Cleared) UK Remote/Hybrid 6 Month Contract £380/day (Outside IR35) Network Security Engineer needed with active SC Security Clearance for a 6 Month Contract. Start ASAP in August/September 2026. The vast majority of the work is expected to be remote. However, there may be occasional travel to UK customer sites including - Warwick, Wokingham, Corsham + Farnborough. Working with a global IT Consultancy supporting a leading Telecoms end client: Must have strong hands-on experience of: F5, Zscaler + Palo Alto technologies.  Checkpoint, Juniper, Bluecoat, Cisco Network Solutions Technical Ownership of Customer Security infrastructure estate, processes, procedures, documentation + life cycle management. Acting as technical point of reference + escalation for Security related changes, modifications + projects for firewall rule bases. Technical point of contact for vendor support for security infrastructure incidents. Design of customer networks...

Network Security Engineer (SC Cleared) UK Remote/Hybrid 6 Month Contract £380/day (Outside IR35) Network Security Engineer needed with active SC Security Clearance for a 6 Month Contract. Start ASAP in August/September 2026. The vast majority of the work is expected to be remote. However, there may be occasional travel to UK customer sites including - Warwick, Wokingham, Corsham + Farnborough. Working with a global IT Consultancy supporting a leading Telecoms end client: Must have strong hands-on experience of: F5, Zscaler + Palo Alto technologies. Checkpoint, Juniper, Bluecoat, Cisco Network Solutions Technical Ownership of Customer Security infrastructure estate, processes, procedures, documentation + life cycle management. Acting as technical point of reference + escalation for Security related changes, modifications + projects for firewall rule bases. Technical point of contact for vendor support for security infrastructure incidents. Design of...

Network Security Engineer (SC Cleared) UK Remote/Hybrid 6 Month Contract £380/day (Outside IR35) Network Security Engineer needed with active SC Security Clearance for a 6 Month Contract. Start ASAP in August/September 2026. The vast majority of the work is expected to be remote. However, there may be occasional travel to UK customer sites including - Warwick, Wokingham, Corsham + Farnborough. Working with a global IT Consultancy supporting a leading Telecoms end client: Must have strong hands-on experience of: F5, Zscaler + Palo Alto technologies. Checkpoint, Juniper, Bluecoat, Cisco Network Solutions Technical Ownership of Customer Security infrastructure estate, processes, procedures, documentation + life cycle management. Acting as technical point of reference + escalation for Security related changes, modifications + projects for Firewall rule bases. Technical point of contact for vendor support for security infrastructure incidents. Design of...

A public sector organisation is seeking a Senior AWS Platform Engineer to join via a Consultancy to join a strategic programme delivering and evolving a cloud-based occupancy data platform hosted within AWS. The platform ingests and processes data from a range of sources including WiFi networks, IoT sensors and wider property technology systems, generating occupancy insights that support data-driven decision making across a large-scale estate. As the Senior AWS Platform Engineer you will play a key role in the design, build and support of the cloud infrastructure, integrations and automation capabilities that underpin the platform. This is an excellent opportunity for an experienced AWS specialist who enjoys solving complex technical challenges, building cloud-native services and working across platform engineering, DevOps and systems integration. This is an initial contract until May 2027 with potential to be extended, it is one day per week in the office in Central...

Job Title: Project Manager - Network & Security Day Rate: £450 per day - Outside IR35/Limited Company Duration: 6 months initially Location: Central London, near Bank Station - Fully onsite Start Date: ASAP Overview We are assisting a client in their requirement for an experienced Project Manager to lead the delivery of a Cisco network and security transformation programme. As Project Manager, you will take ownership of the end-to-end delivery, coordinating technical resources, stakeholders, third parties and business teams to ensure the migration is delivered successfully with minimal disruption to production services. Key Responsibilities Own and manage the project from initiation through design, build, migration, testing, cutover and handover into BAU. Develop and maintain the overall project plan, milestones, dependencies, RAID log and delivery schedule. Coordinate the deployment of the new Cisco Secure Firewall infrastructure, including FMC HA...

Job Title: Project Manager - Network & Security Day Rate: £450 per day - Outside IR35 / Limited Company Duration: 6 months initially Location: Central London, near Bank Station - Fully onsite Start Date: ASAP Overview We are assisting a client in their requirement for an experienced Project Manager to lead the delivery of a Cisco network and security transformation programme. As Project Manager, you will take ownership of the end-to-end delivery, coordinating technical resources, stakeholders, third parties and business teams to ensure the migration is delivered successfully with minimal disruption to production services. Key Responsibilities Own and manage the project from initiation through design, build, migration, testing, cutover and handover into BAU. Develop and maintain the overall project plan, milestones, dependencies, RAID log and delivery schedule. Coordinate the deployment of the new Cisco Secure Firewall infrastructure, including FMC...

Job Title: Project Manager - Network & Security Day Rate: £450 per day - Outside IR35 / Limited Company Duration: 6 months initially Location: Central London, near Bank Station - Fully onsite Start Date: ASAP Overview We are assisting a client in their requirement for an experienced Project Manager to lead the delivery of a Cisco network and security transformation programme. As Project Manager, you will take ownership of the end-to-end delivery, coordinating technical resources, stakeholders, third parties and business teams to ensure the migration is delivered successfully with minimal disruption to production services. Key Responsibilities Own and manage the project from initiation through design, build, migration, testing, cutover and handover into BAU. Develop and maintain the overall project plan, milestones, dependencies, RAID log and delivery schedule. Coordinate the deployment of the new Cisco Secure Firewall...

M&A – 2nd/3rd Line Infrastructure Engineer | Technical BA Location: Hybrid – remote + extensive European travel (expenses paid) Rate: £400/day | Outside IR35 We’re looking for a 2nd/3rd Line Infrastructure Engineer with strong technical BA / discovery experience to support a major M&A infrastructure integration across 13 entities, 37 sites and ~1,000 users across Europe . This is not a traditional hands-on 2nd/3rd line role . It is heavily focused on technical discovery, requirements gathering, infrastructure assessment and migration planning , so candidates need to be confident engaging with stakeholders and documenting complex environments. Key Responsibilities Conduct technical discovery across infrastructure, EUC, networks, servers, Azure, M365 and identity. Meet with local IT teams and stakeholders to understand and document current-state environments. Gather technical requirements and translate findings into actionable migration plans....