30 network infrastructure engineer jobs found

Infrastructure Engineer | Windows Server, AD & Virtualisation | Global Hosting Environment Rate: approx. £400 per day (Outside IR35) Length: 6 months (extensions likely) Location: Windsor (Hybrid – 4 days per week on site) Contract, full-time We’re hiring a Windows-focused Infrastructure Engineer to support a global hosting estate delivering highly available managed services across multiple regions. This is a hands-on, operational role where you’ll take ownership of Windows infrastructure stability within a large-scale virtualised environment. Availability, security, and disciplined change control are non-negotiable, and you’ll be trusted to execute with precision. The Role You will: Administer and maintain hosted Windows Server infrastructure Own monthly Windows patching across critical systems Patch Active Directory domain controllers and bastion / jump servers (HA pairs across regions) Execute controlled, sequential patching with clear...

Network Engineer - Hybrid (1 day per week onsite London) - £500pd - £600pd Outside IR35 - 6 months rolling I'm working with an exciting consultancy who are looking to hire a Network Engineer for a 6 month rolling contract, the role is hybrid with 1 day on site in London per week. Rate: £500pd - £600pd Outside IR35. Skills required: - Design of datacentre networking infrastructure - Optimize MPLS & VPLS - Mellanox and Meraki - VLAN and QoS This role has a short 2 stage interview process. Network Engineer - Hybrid (1 day per week onsite London) - £500pd - £600pd Outside IR35 - 6 months rolling

NETWORK ENGINEER - OUTSIDE IR35 We are seeking a highly motivated and experienced Network Engineer to join a dynamic technology team within a fast-paced investment banking environment. This role is ideal for an individual with strong technical expertise, excellent problem-solving skills, and experience supporting enterprise-grade network infrastructure in a regulated, high-availability setting. Key Responsibilities Support, configure, and maintain enterprise network systems, including routers, switches, firewalls, VPNs, and cloud-based network services . Monitor network performance, perform diagnostics, and troubleshoot issues to ensure high availability, reliability, and optimal performance . Assist in the design and implementation of secure, scalable network solutions aligned with business and security requirements. Collaborate with cross-functional teams to resolve network incidents and support ongoing business initiatives....

Platform Engineer | Trading Firm Central London | 3 days on site Outside IR35 | Up to £650 per day A trading firm in central London has rolled out a business wide data platform and now needs a senior Platform Engineer to take full control of the platform layer. Kubernetes is the heart of this environment and they need someone who can run it with confidence, precision and zero drama. What they need you to bring Serious Kubernetes depth covering cluster design, workload orchestration, autoscaling strategies, multi cluster operations, network policy, resource tuning and deep debugging across pods, nodes and the control plane Deep Linux fluency with the ability to harden, tune and own production environments from top to bottom Strong SQL engineering skills covering schema design, performance tuning and high throughput optimisation Solid C# background with clean, maintainable service patterns Ability to design, build and refine CI/CD...

Juniper Network Engineer initial 6 month contract - £575 - £650 a day - outside IR35 Fully onsite role based - Newbury - (9-day fortnight, every other Friday off) Active DV Clearance is essential We are seeking an experienced Contract Juniper Network Engineer to design, implement, and support enterprise-grade LAN/WAN/WLAN environments. The successful candidate will play a key role in delivering secure, highly available, and scalable network solutions leveraging Juniper technologies, with integration into cloud platforms such as Amazon Web Services (AWS) and Microsoft Azure. Key Responsibilities Design and implement enterprise LAN/WAN/WLAN networks using Juniper technologies Plan and deploy high-availability, resilient, and scalable network architectures Integrate on-premise infrastructure with cloud platforms (AWS, Azure) Configure and manage Juniper routers, switches, and firewalls Implement and administer network security solutions Provide advanced...

Juniper Network Engineer initial 6 month contract - £575 - £650 a day - outside IR35 Fully onsite role based - Newbury - (9-day fortnight, every other Friday off) Active DV Clearance is essential We are seeking an experienced Contract Juniper Network Engineer to design, implement, and support enterprise-grade LAN/WAN/WLAN environments. The successful candidate will play a key role in delivering secure, highly available, and scalable network solutions leveraging Juniper technologies, with integration into cloud platforms such as Amazon Web Services (AWS) and Microsoft Azure. Key Responsibilities Design and implement enterprise LAN/WAN/WLAN networks using Juniper technologies Plan and deploy high-availability, resilient, and scalable network architectures Integrate on-premise infrastructure with cloud platforms (AWS, Azure) Configure and manage Juniper routers, switches, and firewalls Implement and administer network security solutions Provide advanced...

Django SME (AWS / FastAPI) £450 - £475 per day (Outside IR35) Remote (9 Month Initial Contract) We’re hiring a genuine Django Subject Matter Expert to lead the build of a high-performance FastAPI application within AWS. We need a Senior Engineer who understands backend architecture properly and can deliver from day one - scalable, secure and production-ready. You’ll drive design decisions, own implementation standards and set best practice across the backend estate. What You’ll Be Doing: • Designing and delivering production-grade Django applications • Leading AWS architecture decisions (application + infrastructure) • Building robust REST / CRUD APIs • Implementing secure authentication, authorisation and SSO patterns • Debugging AWS networking and performance issues • Optimising resource consumption (CPU, memory, storage, network) • Embedding secure coding standards and mitigating backend attack vectors What You...

Job Overview We are seeking an experienced Cloud Engineer specialised in Azure to join our team on a 3-month contract basis. We've proven our concept and now need to scale. You'll take our existing MVP Azure infrastructure and re-architect it into a production-grade platform capable of meeting enterprise security requirements, SLA commitments, and the scrutiny of enterprise customer audits. Key Responsibilities Architecture & Infrastructure Redesign Azure architecture for medium enterprise scale, reliability, and security Design and deploy high-availability, fault-tolerant infrastructure with appropriate redundancy Establish disaster recovery and business continuity procedures Define and document the target architecture for long-term team ownership Harden security posture to meet medium enterprise customer requirements Implement Azure security best practices (Key Vault, Managed Identities, RBAC, Private Endpoints) Configure network...

Juniper Network Engineer initial 6 month contract - £575 - £650 a day - outside IR35 Fully onsite role based - Newbury - (9-day fortnight, every other Friday off) Active DV Clearance is essential We are seeking an experienced Contract Juniper Network Engineer to design, implement, and support enterprise-grade LAN/WAN/WLAN environments. The successful candidate will play a key role in delivering secure, highly available, and scalable network solutions leveraging Juniper technologies, with integration into cloud platforms such as Amazon Web Services (AWS) and Microsoft Azure. Key Responsibilities Design and implement enterprise LAN/WAN/WLAN networks using Juniper technologies Plan and deploy high-availability, resilient, and scalable network architectures Integrate on-premise infrastructure with cloud platforms (AWS, Azure) Configure and manage Juniper routers, switches, and firewalls Implement and administer network security solutions Provide advanced...

IT Infrastructure Engineer - Contractor (BAU Support) Day Rate: £300 Outside IR35 Location: Hybrid - Onsite (Whitley/Leeds/Doncaster) & Remote Start Date: ASAP - must be available immediately to start Duration: Initial 8-12 weeks (extension subject to review) Overview An experienced Infrastructure Engineer is required to provide short-term, hands-on BAU support during a period of reduced internal capacity. The role focuses on stabilising infrastructure operations, providing Level 3 escalation support, maintaining patching and automation standards, and reducing operational backlog. Key Responsibilities Act as an L3 escalation point for infrastructure incidents and problems. Manage and support VMware environments (vSphere 7/8) and physical HP Servers. Maintain Windows Server (2016-2022) , Active Directory, DNS, DHCP, GPO, and file services. Oversee SAN storage , Veeam backups , and infrastructure monitoring . Provide BAU network and Firewall...

Cloud/AWS Infrastructure Engineer Location: London, UK Employment Type: TP (Outside IR35) Duration: 6-12 Months Job Responsibilities: · Maintain and improve AWS cloud infrastructure for 24/7 bank operations, focusing on stability, performance, security, and compliance · Enhance connectivity between AWS accounts, client, and third parties to ensure secure and reliable customer experiences · Design and create automation scripts and tooling using Bash, Python, or Go · Build and support cloud platforms for application developers, improving SDLC and developer experience · Manage vendor relationships and coordinate project efforts across business areas · Participate in on-call rotation to support platform reliability Required Qualifications, Capabilities, and Skills: · Formal training or certification on software engineering concepts and advanced applied experience · Hands-on experience with AWS and infrastructure as code (Terraform) · Understanding of...

Network Engineer (Hosting) | Cisco Nexus, ASA & F5 | Global Data Centre Infrastructure Rate: £400–£500 per day (Outside IR35) Length: 10-12 months Location: Windsor (Hybrid – 4 days per week on site Contract, full-time We’re hiring a Network Engineer to join a growing hosting services team supporting high-availability, international data centre environments. This is a hands-on infrastructure role where you’ll take ownership of network performance, resilience, and security across multiple hosted platforms in a complex, SLA-driven environment. This is engineering depth, not first-line support. With new hosted contracts driving expansion, you’ll step into a role offering genuine technical scope, exposure to global infrastructure, and long-term project work rather than short-term firefighting. The Role In this role, you will: Provide expert-level support across data centre network environments Monitor, review, and report on network service levels,...

Duration: Through to 31 December 2026 IR35: Outside IR35 Location: Southampton (3-4 days onsite per week) Rate: Dependent on experience Background The business has been been part (majority) purchased. The main element of this split work is the Tenancy activities. You will support the creation of two new tenants which we are migrating to from the existing old tenant. This work is being handled by the existing internal team in conjunction with a third party and migration toolset. Role Overview We are seeking an experienced Infrastructure Engineer with strong, hands‑on expertise across the Microsoft ecosystem including Azure, Microsoft 365, Defender suite, and associated third party security and management tools. The primary focus of this role is to support and execute technical workstreams relating to a major organisational split project, covering identity, infrastructure, network, and application separation. Alongside the split programme, the contractor will also support wider...

Job Title: Azure Infrastructure Specialist / Senior DevOps Engineer Contract Duration: 10 months (Until Dec 2026) Rate: DOE - Outside IR35 Location: Remote (UK-based only) Overview: We are looking to hire an experienced Azure Infrastructure Specialist / Senior DevOps Engineer on a fully remote outside-IR35 contract. You'll play a key role in building infrastructure and implementations in new cloud environments, delivering secure, automated cloud environments that support business-critical applications. This is a hands-on, delivery-oriented role requiring deep expertise in Azure, Infrastructure automation, Builds and Implementations. Key Responsibilities: Translate high-level architecture into working Azure Infrastructure environments Build environments based on HLDs, aligning with architectural standards and patterns Building environments Use Terraform and Ansible to implement infrastructure-as-code and automate application/service deployments...

Duration: Through to 31 December 2026 IR35: Outside IR35 Location: Southampton (3-4 days onsite per week) Rate: Dependent on experience Background The business has been been part (majority) purchased. The main element of this split work is the Tenancy activities. You will support the creation of two new tenants which we are migrating to from the existing old tenant. This work is being handled by the existing internal team in conjunction with a third party and migration toolset. Role Overview We are seeking an experienced Infrastructure Engineer with strong, hands‑on expertise across the Microsoft ecosystem including Azure , Microsoft 365 , Defender suite , and associated third party security and management tools. The primary focus of this role is to support and execute technical workstreams relating to a major organisational split project , covering identity, infrastructure, network, and application separation. Alongside the split programme,...

Duration: Through to 31 December 2026 IR35: Outside IR35 Location: Southampton (3-4 days onsite per week) Rate: Dependent on experience Background The business has been been part (majority) purchased. The main element of this split work is the Tenancy activities. You will support the creation of two new tenants which we are migrating to from the existing old tenant. This work is being handled by the existing internal team in conjunction with a third party and migration toolset. Role Overview We are seeking an experienced Infrastructure Engineer with strong, hands-on expertise across the Microsoft ecosystem including Azure , Microsoft 365 , Defender suite , and associated third party security and management tools. The primary focus of this role is to support and execute technical workstreams relating to a major organisational split project , covering identity, infrastructure, network, and application separation. Alongside the split programme, the contractor...

Duration: Through to 31 December 2026 IR35: Outside IR35 Location: Southampton (3-4 days onsite per week) Rate: Dependent on experience Background The business has been been part (majority) purchased. The main element of this split work is the Tenancy activities. You will support the creation of two new tenants which we are migrating to from the existing old tenant. This work is being handled by the existing internal team in conjunction with a third party and migration toolset. Role Overview We are seeking an experienced Infrastructure Engineer with strong, hands-on expertise across the Microsoft ecosystem including Azure , Microsoft 365 , Defender suite , and associated third party security and management tools. The primary focus of this role is to support and execute technical workstreams relating to a major organisational split project , covering identity, infrastructure, network, and application separation....

DV Cleared DevSecOps Platform Architect & Engineer Location: Hampshire Security Clearance: Active DV Clearance Required Rate/Salary: £650 to £750 per day - Outside IR35 + Long term engagement Overview We're looking for a DV Cleared DevSecOps Platform Architect & Engineer to join a high-profile, secure military IT programme, delivering highly resilient, automated, and secure data platforms. This role sits at the intersection of DevSecOps, platform engineering, cloud infrastructure, and secure data systems, supporting advanced research and large-scale data analysis in a mission-critical environment. If you enjoy building things that have to work first time, in places where failure is not an option, you'll feel right at home. Key Responsibilities Design, build, and maintain secure DevSecOps platforms supporting sensitive data workloads Architect and deliver automated CI/CD and GitOps pipelines for rapid, secure deployments Develop and manage secure cloud and hybrid...

Network Engineer Cardiff On-site18 Months £400 to £450 Outside IR35Your new company A large organisation based in South Wales. Your new role The role focusses on deploying Fortinet infrastructure, including Fortigate firewalls, Fortiswitches, and FortiManager. You will lead the network deployment, ensure alignment across business teams, and build strong internal relationships to provide a smooth handover once the implementation is complete.Key Responsibilities Creating Implementation plans using the LLD provided, planning, and installing local area networks (LAN), wide area networks (WAN) Implementing firewalls, switches, taps and centralised mgmt. As required on 2 new sites Testing new implementations and monitoring network performance, analysing data, and performing updates as required to ensure the best possible delivery. Following the successful build of 2 new DC's, there will be a migration exercise out of the existing DC. Review and apply necessary FW changes following...

Network Engineer Cardiff On-site 18 Months £400 to £450 Outside IR35 Your new company A large organisation based in South Wales. Your new role The role focusses on deploying Fortinet infrastructure, including Fortigate firewalls, Fortiswitches, and FortiManager. You will lead the network deployment, ensure alignment across business teams, and build strong internal relationships to provide a smooth handover once the implementation is complete. Key Responsibilities Creating Implementation plans using the LLD provided, planning, and installing local area networks (LAN), wide area networks (WAN) Implementing firewalls, switches, taps and centralised mgmt. As required on 2 new sites Testing new implementations and monitoring network performance, analysing data, and performing updates as required to ensure the best possible delivery. Following the successful build of 2 new DC's, there will be a migration exercise out of the existing DC. Review and apply...