Location: London (Hybrid)

Employment Type: Permanent

Job Title: Network Engineer

This Network Engineer will be responsible for designing, implementing, and managing secure, low-latency, and scalable network infrastructure across both cloud and physical environments and will be a critical hands-on engineering role within a fast-moving digital asset business.

The primary purpose of this role is to act as a backup engineer for the Senior Network Engineer, providing operational support for all aspects of networking when required. Additionally, this role will provide operational support for Platform Engineering, ensuring stability and efficiency across systems.

While this is primarily an operations-focused position (around 75% operational support and 25% project work), there will be opportunities to contribute to ongoing projects and infrastructure initiatives. Working closely with both Network and Platform Support Engineers, this role offers scope for professional growth, flexibility, and exposure across a wide range of technologies. The ideal candidate will bring a combination of networking and automation skills, with a strong desire to grow into a Platform Networking Engineer — someone who can solve platform issues but with a main focus on networking.

Role Responsibilities

Cloud & On-Prem Network Infrastructure

Lead the design, deployment, and operation of complex cloud (AWS & Azure) and on-prem network infrastructure. Architect and optimise connectivity for low-latency systems and ensure secure, scalable networking between platforms, datacentres, and cloud environments. Manage VPNs, segmentation, and hybrid environments.

Infrastructure as Code & Automation

Develop and maintain an automation framework using Terraform, Ansible, and other IaC tools. Build and manage network provisioning, compliance checks, and configuration drift remediation through GitOps principles. Identify opportunities to improve network operations with automation, AI, and low-code tools.

Network Security & Compliance

Implement and manage secure network architectures in line with best practices. Ensure compliance with relevant regulatory and security standards across perimeter networks, VPNs, firewalls, proxies, and DDoS protections. Support a Zero Trust model through segmentation and ZTNA policies.

Performance & Low-Latency Optimisation

Engineer networks for speed, efficiency, and resilience—particularly in support of high-performance financial systems. Monitor and analyse performance, recommend improvements, and ensure systems meet demanding SLAs. Support colocation near exchanges and manage high-throughput, low-latency routes.

Monitoring & Observability

Build and manage comprehensive monitoring and logging systems for network performance, latency, and availability. Implement observability frameworks using modern tools to provide real-time insight and support root-cause analysis.

Collaboration & Project Leadership

Act as a key stakeholder in cross-functional teams, working with Infrastructure, Security, DevOps, and Application teams to deliver secure and high-performance systems. Document design standards and mentor others in networking best practices. Lead major infrastructure initiatives from design through to implementation.

Support & Innovation

Continuously assess the evolving needs of the business and identify areas for innovation. Ensure rapid incident response and play a key role in the change and incident management process. Contribute to strategic technology decisions with a focus on resilient network design.

Professional Experience and Skills

• 3+ years in a Network Engineer or similar infrastructure-focused role
• Proven expertise in AWS networking (VPCs, Transit Gateway, Direct Connect, Security Groups, etc.)
• Experience designing and managing enterprise-grade LAN, WAN, VPN, and SASE networks
• Familiarity with Azure networking and hybrid cloud deployments
• Deep understanding of low-latency and high-availability network design
• Hands-on experience with network security (Firewalls, Proxies, Remote Access, DDoS, ZTNA)
• Proficient in Terraform, Ansible, and scripting for infrastructure automation
• Knowledge of GitOps, CI/CD pipelines, and automated network provisioning
• Exposure to monitoring tools and practices (NetFlow, packet capture, DNS/IPAM, etc.)
• Strong communication and documentation skills
• Experience working in regulated environments (CIS Benchmarks, compliance reporting)
• Bonus: CCNP or equivalent certification, and/or exposure to Web3 or digital assets