Network Engineer - Teversham

Salary: £? - ? per year

• Proven experience designing, deploying and optimising Cisco Secure Network Analytics (SNA) environments
• Strong technical knowledge of NetFlow, syslog, Flow Managers, Flow Collectors and UDP Directors
• Experience with network traffic analytics, security monitoring and behavioural detection
• Strong Cisco enterprise networking and network security expertise
• Experience improving telemetry collection, network visibility and monitoring architectures
• Ability to design scalable, resilient and highly available network analytics platforms
• Desirable: Network automation using Python, Ansible, Terraform or REST APIs
• Desirable: Automating NetFlow and syslog configuration and deployment
• Desirable: Experience with Git and CI/CD workflows
• Desirable: HAProxy, load balancing and high-availability architectures
• Desirable: UDP traffic distribution and Flow Collector scalability
• Desirable: Hybrid cloud networking and east-west traffic monitoring

• Assess the existing Cisco SNA architecture, configurations, integrations and telemetry collection
• Design and deploy a replacement Cisco SNA infrastructure using procured hardware and software
• Configure and optimise Flow Managers, Flow Collectors and UDP Directors
• Migrate existing configurations and data sources, ensuring platform functionality and resilience
• Evaluate load-balancing and high-availability solutions, including HAProxy and alternatives
• Review global NetFlow and syslog coverage, identifying gaps and opportunities for improvement
• Develop strategies to improve network traffic visibility, particularly east-west traffic flows
• Design scalable telemetry collection, forwarding and distribution architectures
• Assess telemetry coverage across campus, data centre and hybrid cloud environments
• Identify opportunities to automate NetFlow and syslog deployment
• Tune Cisco SNA security policies, behavioural analytics, alarms and detection thresholds
• Establish traffic baselines, host groups and network classifications
• Reduce false positives and alert fatigue while improving threat detection
• Optimise telemetry ingestion, data retention and platform performance
• Collaborate with Network Reliability Engineering and Security teams to develop monitoring use cases
• Produce architecture diagrams, technical documentation and operational procedures
• Deliver knowledge transfer and operational handover to internal engineering teams
• Deliver an assessment of the existing Cisco SNA environment and a redesigned, operational platform
• Deliver optimised security analytics, monitoring policies and alerting, improved global NetFlow and syslog coverage, and a roadmap for enhanced east-west traffic visibility
• Provide recommendations for Flow Collector load balancing and high availability

• Ansible
• CI/CD
• Cloud
• Cisco
• Flow
• Git
• Hardware
• Load Balancing
• Network
• Python
• REST
• Security
• Terraform
• Support

More:

We are seeking a consultant for a network visibility and security analytics improvement programme at a leading global technology organisation. The role focuses on improving traffic visibility, strengthening security analytics and developing a scalable, resilient architecture across a complex global network, with particular attention to east-west traffic across campus, data centre and cloud environments. This is a 12-month contract based in Cambridge with hybrid working, paying £400–£440 per day, inside IR35.

last updated 44 week of 2026