Network Engineering Specialist Location: London or Bristol (Hybrid)
Contract: 6 months
Security Clearance: BPSS Required
Start Date: ASAP
The Opportunity We're partnering with a leading telecommunications organisation at the forefront of critical national infrastructure to recruit an experienced ESN Specialist - RAN . This is an exciting opportunity to play a key role in the optimisation and performance of a high-profile Emergency Services Network (ESN) , ensuring exceptional service availability and user experience for mission-critical communications.
Working within a specialist RAN Performance & Optimisation team, you'll be responsible for identifying performance issues, conducting deep technical investigations, and driving improvements across 4G/LTE public safety services.
Key Responsibilities
Perform detailed analysis of UE logs, network traces and protocol captures to identify performance issues and service degradation.
Conduct end-to-end troubleshooting across LTE networks, including SIP signalling, Push-to-Talk (PTT), SRTP and DTLS services.
Analyse drive test logs and network protocol traces to determine root cause of defects and underperforming KPIs.
Investigate systematic issues affecting ESN performance and customer experience.
Utilise data from multiple sources including: UE application events and Layer 1-3 logs
Drive testing and Wireshark traces
eNodeB and Core Network signalling
OTT protocol traces
Coverage, capacity and OSS performance data
Network change records
Work collaboratively with engineering, delivery and vendor teams to define and implement corrective actions.
Support the development of performance optimisation strategies, best practices and network improvements.
Provide technical leadership and subject matter expertise for ESN-related performance issues.
Required Experience To be successful in this role, you should have:
Extensive experience within mobile telecommunications as a RAN Performance or Optimisation SME.
Strong expertise in UE log analysis , Wireshark tracing , and end-to-end network troubleshooting.
Deep understanding of 4G LTE networks , radio per...
Network Engineering Specialist employer: Experis It
As a Cloud Security Engineer at our Knutsford location, you will join a dynamic and innovative team dedicated to driving secure digital transformation. We offer a hybrid work model that promotes work-life balance, alongside competitive rates and opportunities for professional growth in a supportive environment. Our culture fosters collaboration and continuous improvement, ensuring that you can thrive while making a meaningful impact on our cloud security capabilities.
