Summary: We are seeking an experienced Freelance Network Architect to support the design, evolution, and optimisation of complex enterprise network environments. This role requires a highly skilled professional with broad exposure across modern networking technologies, capable of operating in a fast-paced, large-scale environment. The position involves designing scalable and secure network solutions, leading transformation initiatives, and collaborating with cross-functional teams. The ideal candidate will have proven experience in large-scale enterprise environments, strong expertise in networking technologies, and familiarity with cloud networking and automation. The role is based in Central London with a hybrid working arrangement of 1-2 days per week in the office and the remainder remote.
Overview
We are seeking an experienced Freelance Network Architect to support the design, evolution, and optimisation of complex enterprise network environments. This role requires a highly skilled professional with broad exposure across modern networking technologies, capable of operating in a fast-paced, large-scale environment.
Key Responsibilities
- Design and architect scalable, secure, and high-performance network solutions across enterprise environments
- Assess current network infrastructure and recommend improvements aligned with business and technical requirements
- Lead network transformation initiatives, including cloud integration, automation, and modernisation efforts
- Collaborate with cross-functional teams (engineering, security, cloud, infrastructure) to deliver cohesive solutions
- Produce high- and low-level design documentation (HLD/LLD)
- Provide technical leadership and guidance to network engineers and operational teams
- Ensure network designs meet compliance, resilience, and security standards
- Support troubleshooting and resolution of complex network issues when required
- Evaluate emerging technologies and provide strategic recommendations
Required Skills & Experience
- Proven experience as a Network Architect in large-scale, enterprise environments
- Strong expertise across a broad networking stack, including: Routing & switching (BGP, OSPF, MPLS)
- Data centre networking (leaf-spine, VXLAN, EVPN)
- Network security (firewalls, segmentation, zero trust principles)
- Load balancing and application delivery
- Experience with cloud networking (AWS, Azure, or GCP) and hybrid architectures
- Solid understanding of network automation and programmability (e.g., Python, Ansible, APIs)
- Familiarity with SD-WAN and software-defined networking concepts
- Strong knowledge of high availability, disaster recovery, and resilience design
- Experience working in regulated or high-availability environments is desirable
Desirable Skills
- Certifications such as CCIE, CCNP, or equivalent
- Exposure to financial services or similarly complex industries
- Experience with monitoring, observability, and performance tuning tools
- Knowledge of DevOps practices and CI/CD pipelines for network infrastructure
