5G Specialists

LA International; City Of London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

LA International is seeking a senior performance SME for mobile networks, located in London or Bristol with a hybrid onsite/remote setup (3 days onsite, 2 days WFH). The role focuses on shaping the Mobile RAN strategy, performing KPI design, and conducting advanced 4G/5G investigations to optimize performance.

The incumbent will analyse logs, drive test data, and protocol traces, work with Ericsson and Nokia equipment, and ensure high-availability network operations under inside IR35

Qualifications

• Extensive experience in mobile telecommunications with high-availability systems.
• Ability to define KPI definitions, formulas, and measurements for radio networks.
• Experience analysing drive tests, logs, and protocol traces for 4G networks.
• Knowledge of LTE parameters and timers.

Responsibilities

• Define and implement network performance and KPI strategies for 4G/5G RAN.
• Lead end-to-end investigations and parameter optimisations.
• Collaborate with 3rd party network/IT suppliers to deliver performance improvements.

Skills

KPI design

Network performance management

5G investigations

E2E 4G/5G architectures

SIP/VoNR/ PTT awareness

Test & troubleshooting tools

Vendor knowledge (Nokia Ericsson)

Post processing tools (Actix)

Tools

Nemo/TEMs/Accuver

Actix

Job description

This role has a significant impact on shaping the Mobile RAN Strategy

Rate: inside IR35

Location: London or Bristol 3 days onsite 2 wfh

Duration: 6 months

Expertise

• Expert knowledge of KPI design, Network performance management. Capability to build KPI that is aligned & reflective of user experience.
• Expert in KPI and User experience improvement.
• Expert knowledge of Ericsson and Nokia counters, KPIs.
• Expert level hands-on experience in 5G and 5G+ investigations, parameter optimisations and E2E Investigations.
• Expert understanding of E2E 4G,5G, VoNR, SA, NSA, Slicing architectures and design.
• Expert understanding of Nokia and Ericsson vendor
• In depth knowledge of Mobile networks particularly 4G/5G & Public Safety functionality over LTE/5G+ with particularly deep understanding of network design, performance, and optimisation.
• In depth knowledge of 5G,5G+, LTE & SIP signalling, PTT (push to talk), SRTP/DTLS troubleshooting & Optimisation.
• Good understanding of 3GPP & ETSI specifications.
• Good understanding of DTLS/SRTP protocol.

MANDATORY

• Extensive experience in mobile telecommunications industry in the role of a performance SME with business-critical, high-availability / high-throughput systems and networks.
• Able to provide technical solutions, processes definition for network performance & optimisation of 4G based RAN Macro network.
• Proven experience in defining and understanding KPI definitions, formula and measurements of radio networks.
• Able to analyse in depth, drive test logs, Wireshark traces and protocol analysers traces for 4G networks.
• Good Knowledge of LTE parameters & timers.
• Familiarity with test software & devices (Nemo/TEMs/Accuver) & post processing tools (Actix).
• Experience of working with 3rd parties' network/IT Suppliers.

Inclusion policy

We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.