Data Engineer / Network Traffic Analysis

Salary: £136,500 - 143,000 per year

Requirements:

• Strong hands-on experience with Wireshark
• Strong hands-on experience with PCAP / packet capture
• Strong hands-on experience with network traffic analysis
• Strong hands-on experience with network sniffing
• Strong hands-on experience with tcpdump
• Strong hands-on knowledge of TCP/IP
• Strong hands-on knowledge of DNS
• Strong hands-on knowledge of HTTP / HTTPS
• Strong hands-on knowledge of network protocols and troubleshooting
• Python and/or SQL experience
• Experience with GCP / Google Cloud, BigQuery, Pub/Sub or Dataflow is beneficial but not essential

Responsibilities:

• Capture and analyse network traffic using Wireshark, PCAP and tcpdump
• Investigate network behaviour at packet and protocol level
• Analyse TCP/IP, DNS, HTTP/HTTPS, ports, protocols and traffic flows
• Filter packet captures to identify patterns, anomalies and potential issues
• Troubleshoot network connectivity, latency, routing and protocol issues
• Extract, transform and analyse technical/network data
• Use Python and SQL to work with network, telemetry or data sets
• Work alongside data, networking and security teams
• Support cloud-based data and network environments

Technologies:

• BigQuery
• Cloud
• GCP
• HTTP
• Support
• Network
• Python
• SQL
• Security
• TCP/IP

More:

We are recruiting for a Data Engineer / Network Traffic Analysis specialist to join a highly technical team working with large volumes of network and traffic data. This is a 6-month contract with a day rate of £500 - £550 inside IR35, based in Islington, London, with a hybrid working pattern of 2 days per week onsite.

last updated 38 week of 2026