Networking Specialist

Industry / Sector:FinTech/Financial Services

Salary/Rate:£140,000-£160,000

Job type:Perm

Town/City:City of London

County:London

Job ref:HKHJp6

Post Date:12. 06. 2025

Apply Now Create Job Alert

Scroll

Meet Our Recruiter

Craig Mullen

Director

0203 479 4931

craig@ncounter.co.uk

About the Role

£140,000-160,000

HKHJp6

Core Networking Specialist

Location: London (Hybrid Working Available) Industry: Global Financial Services / Institutional Asset Management Clearance: Right to work in the UK required

A globally recognised financial institution is hiring a Core Networking Specialist to join its high-performance infrastructure team. This firm plays a critical role in global markets, offering integrated investment services to institutional clients and managing trillions in assets. Known for its pioneering work in ETFs and commitment to data-driven innovation, it operates across 28+ countries and places strong emphasis on operational excellence and collaboration.

You’ll design and optimise network infrastructure supporting real-time trading, analytics, and global operations. This role covers enterprise networking across data centres, campuses, and cloud environments - balancing performance, scale, and resilience in demanding financial settings.

Key Responsibilities

Design and implement scalable, high-availability network solutions (LAN, WAN, Campus, Cloud). Translate requirements into robust, well-documented architectures. Lead network delivery projects; coordinate with vendors and internal teams. Provide L3 escalation and proactively improve network performance. Drive automation and evaluate emerging technologies for impact and efficiency.

What We’re Looking For

7+ years’ network engineering experience in enterprise or financial environments. Deep understanding of BGP, OSPF, EVPN, VLAN/VxLAN, MLAG, STP. Hands-on with Arista/Cisco; strong troubleshooting tools (Wireshark, netcat, etc.). Familiar with network security, automation (Python, Ansible), and observability stacks (Prometheus, Grafana). Excellent communicator with experience delivering in high-stakes, collaborative settings. STEM degree and CCNP/CCIE preferred.

Why Join?

Join a trusted global institution where networking is core to performance. You’ll work on critical infrastructure supporting real-time financial systems and collaborate with expert teams across the globe. Expect meaningful projects, technical autonomy, and long-term career investment.

To Apply If you're driven by precision, resilience, and innovation in infrastructure, we’d love to hear from you. UK work authorisation is required.

Apply Now Create Job Alert

More jobs from this recruiter

View All

Contract Golang Engineer

London

£700–800/day

Join a ground-breaking AI programme delivering national security impact. We’re working with a leading UK AI firm on a mission-critical Defence deployment. This greenfield build calls for a Golang specialist to help deliver backend systems that support real-time inference, transcription pipelines, and natural language interaction – all under tight performance and security constraints.

Project Manager Contractor

London

£550-600

We’re partnering with a cutting-edge AI company delivering a flagship MOD-sponsored project. They're seeking a strategic, delivery-focused Project Manager to lead the rollout of an AI-driven capability within Defence ensuring it’s ethically sound, user-centric, and impactful. This is an opportunity to drive real innovation at the intersection of data, AI, and national security, shaping how AI is deployed in complex, secure, and highly operational public sector contexts. What You’ll Be Doing: Leading the end-to-end delivery of an AI-based Defence capability, from discovery to deployment Defining and communicating a clear solution vision, roadmap, and delivery strategy Engaging with internal stakeholders (engineers, data scientists, policy leads) and external partners (vendors, MOD) Managing backlogs, sprint cycles, and stand-ups in an agile delivery environment Embedding ethical, legal, and policy requirements into design and deployment workflows Tracking and communicating delivery progress, risks, and milestones to senior leadership Ensuring full compliance with MOD, data protection, and AI transparency standards

Platform Engineer (Contract)

London

£750-£850

We’re supporting a fast-moving UK-based AI software company delivering a major MOD-backed programme. They're building a mission-critical AI capability for deployment in a secure environment and need platform engineers who thrive in complex, high-stakes settings. You’ll work on the cutting edge of DevSecOps, enabling LLM-backed systems to run without cloud dependencies on uncertain, low-spec hardware in some of the most demanding settings in the world. What You’ll Be Doing: Designing and managing Kubernetes-based infrastructure optimised for portable, classified environments Building secure CI/CD pipelines and deployment tooling for constrained edge environments Downscaling backend and ML services to run on low-resource hardware, sometimes without GPU Managing self-hosted models (e.g., LLMs, transcription systems) for disconnected inference Implementing secure service meshes, logging and monitoring stacks Supporting on-site test events, troubleshooting deployments and connectivity Embedding DevSecOps practices into infrastructure workflows Collaborating with security stakeholders to align with accreditation frameworks

Contract Front-End Engineer

London

£600-£700

We’re supporting a cutting-edge AI organisation delivering a government-funded mission into the Defence sector. They’re seeking a talented Front-End Engineer to help build and iterate on user interfaces that bring complex machine learning outputs to life - transcription analysis, graph-based risk models, and natural-language interfaces for end users in secure, disconnected environments. This is not your typical dashboard gig. It’s a chance to design and build offline-first, insight-rich tools that support real-world decision-making—where clarity and usability can have operational consequences. What You’ll Be Doing: Designing and developing React-based UIs for: Live and retrospective transcription review Graph navigation and data visualisation Natural language querying Insight generation and reporting Building robust, offline-first interfaces that run in air-gapped, secure environments Creating visualisation components (e.g., networks, timelines) to support scenario analysis Integrating with backend APIs delivering LLM, NLP, and structured data outputs Contributing to internal design systems and building reusable, scalable components Collaborating closely with users and the wider delivery team to evolve features through feedback