Network Engineer

About Ori Ori is setting a new standard for how AI worlds are built. We are the first AI Infrastructure provider with the native expertise, comprehensive capabilities, and end-to-end flexibility to support any model, team, or scale. As a fast-growing startup backed by leading investors, we value ambition, accessibility, and collaboration, and are committed to pushing the boundaries of what's possible in the field of AI. Join our close-knit, global team and help us build the future of AI infrastructure!Job Description As a Senior Network Engineer, you'll design, deploy, and operate the high-performance, low-latency network fabric that underpins our GPU infrastructure. You'll play a critical role in shaping the architecture, automation, and operational standards of our network, ensuring it meets the rigorous demands of modern AI training and inference workloads.The ideal candidate is a strong advocate of engineering excellence and operational best practices. You're customer-focused, Contract Opportunity: Specialist Network Engineer (AV / Theatre / Media) Location: West of London (Inside/Outside M25) Start: ASAP Duration: Short-term assignment with high impact Rate: Open depending on experience We're supporting a major organisation in..., Rate: £550 per day, DoE Location: London - 3 days per week onsite Duration: 6 months initially Your New Role We are seeking a Senior Network Engineer with strong experience in broadcast IP environments to join a high-performance infrastructure team. This role will focus on...

collaborative, and equally comfortable discussing technical issues with enterprise customers, internal teams, and cross-functional stakeholders. You'll contribute to everything from design and implementation through to L3/L4 operational support.Role ResponsibilitiesNetwork Architecture & Collaboration: Design scalable leaf-spine networks using Mellanox switches with Cumulus Linux, integrated with Juniper PTX routers and SRX firewalls. Lead 3rd-party and internal provider collaboration to deploy resilient site-to-site and internet connectivity, optimise topology, and resolve complex faults.Operations & Maintenance: Perform configuration, upgrades, and deep troubleshooting of Juniper and NVIDIA/Cumulus devices in production environments.Software-Defined Networking (SDN): Implement programmable network designs using controller-based platforms to support automation and scalability.Kubernetes Networking: Support networking within container platforms using CNIs such as Calico, Cilium, or Kube-OVN. Understand microservices traffic patterns and service mesh integrations.Automation & Scripting: Develop and maintain Ansible playbooks and Python automation for configuration management, provisioning, and compliance, including working against API interfaces of network equipment.Monitoring & Telemetry: Implement observability tools using SNMP, sFlow, and gRPC to detect and address network bottlenecks at scale.Incident Management: Lead L3/L4 network incident response, escalation management and root cause analysis in high-pressure, 24×7 production environments.Stakeholder & Customer Engagement: Act as a trusted technical expert, engaging directly with internal stakeholders and enterprise customers. Present solutions and troubleshoot effectively across all levels of the organisation.Engineering Excellence: Promote and uphold best practices in configuration management, change control, documentation, and continuous improvement.RequirementsHPC/AI Networking: 3-5 years' experience supporting high-throughput, low-latency infrastructure for GPU-based or HPC clusters.8-12+ years in networking, often with at least 5 years in globally distributed environments.Experience with multi-region or multi-continent backbone networks, transit/peering, and high-availability design at Internet scale.Hands-on with large-scale routing (BGP/MPLS), automation at scale, and often SDN or custom orchestration frameworks.Routing & Switching: Strong understanding of BGP, EVPN, VXLAN, and Data Centre Interconnects (DCI).Hardware Platforms: Mellanox Ethernet switches with Cumulus Linux; Juniper PTX core routers and SRX firewalls.Cloud-Native Networking: Proficiency with Kubernetes networking and container-based infrastructure, including CNIs (e.g. Calico, Cilium).Linux Proficiency: Confident with CLI environments, scripting, and diagnostics.Automation & Tooling: Experience with Ansible and Python. Familiarity with Terraform or similar infrastructure-as-code tools is a plus.Customer-Facing Skills: Comfortable explaining complex networking concepts to customers and internal stakeholders, from engineers to executives.Operational Support: Hands-on experience in L3/L4 support within production environments, driving root cause and preventative measures.Engineering Discipline: Strong proponent of code quality, peer reviews, change control, and infrastructure versioning.Preferred QualificationsIndustry certifications such as JNCIE, CCIE, or equivalent.Familiarity with network security frameworks and best practices.Experience with hybrid cloud and cloud connectivity solutions (e.g. AWS/Azure Direct Connect).Exposure to observability platforms and time-series databases (e.g. Grafana, Prometheus, InfluxDB).Qualities we look forSet the standard : Every single day, you spot opportunities to constructively shake things up.Inspire the change : There's no blueprint for the future. You'll embrace challenges and change.You're real and you're true to yourself : We cherish and celebrate diversity so you'll feel right at home, whoever you are and whoever you're talking to, you treat everyone the same.Why should you join us? What sets us apart is our blend of modern technology, competitive benefits, and an open, welcoming work culture that enables our people to thrive.Here are just some of the great things you can expect from us:30 days of annual leave : we value your peace of mind. With 30 days off (excluding public holidays) and access to mental health resources, we make sure you're as strong mentally as you are professionally.A culture that emphasises results over hierarchy, process & ego : we place great emphasis on the quality, ingenuity and creativity of work.Open communication, regular feedback : we value smooth collaboration, direct and actionable feedback, and believe that leading with empathy and a growth mindset makes us better together.Learning Time : we all have dedicated learning time to focus on new skills, projects or interests that lay outside of your day-to-day job.Health & Wellbeing : we want everyone to feel healthy and happy, so we offer private medical insurance via Bupa.Cycle to Work Scheme : we're committed to building a sustainable business, so we encourage cycling to work.Gympass subscription to a variety of gyms and wellbeing appsParticipation in the company shares programEnhanced parental pay & leaveDiversity, Equity, Inclusion and Belonging We are an equal opportunity employer and we strive to reduce unconscious bias throughout our hiring process. All applicants will be considered for employment without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, veteran, neurodiversity status or disability status. To ensure our recruitment processes provide an equal opportunity for all applicants to succeed, we encourage you to let us know if there are any, An elite global hedge fund are now seeking a Senior Network Engineer to work on it's trading infrastructure. To apply, you will ideally be CCIE qualified with a strong background in low latency and multicast networks. Our client is a leading global market maker with an...

Job Description The following information provides an overview of the skills, qualities, and qualifications needed for this role. Rate: £550 per day, DoELocation: London - 3 days per week onsiteDuration: 6 months initially Your New RoleWe are seeking a Senior Network..., SENIOR NETWORK ENGINEERLONDON (4 DAYS ONSITE)£65,000 - £75,000ASAP STARTA Senior Network Engineer is required to work for a world-leading quantitative research and technology firm operating at the cutting edge of financial markets. They specialise in building...

Company Profile Total IT is an award-winning technology services and systems integration business founded in 2006, with offices in Bedford, London, and Dubai. We operate at the intersection of IT, cyber security, networks, and smart building technology, supporting some of...