Job Description

Rubicon Consulting is currently recruiting for a Network Engineer on a 12 months contract based in London.

Role Summary

This role has a direct impact on:

Our Current & future Network Performance, Network Efficiency & Subscriber’s Experience (inc. Emergency Services Network).

Ability to maintain & strengthen our position as #1 UK mobile network and push for global top ten network.

Positive/Negative Perception/PR of Network performance/customer experience.

It achieves this by working with internal/external stakeholders and suppliers of Equipment/Services to deliver the “fit for purpose” RAN feature and parameter designs, subsequent tuning activities, Design & Performance validation activities and producing guidance on operational best practise for maintaining End User experience.

This role has a significant impact on shaping the Mobile RAN Strategy & subsequent budget required to deliver this.

Your key accountabilities within the 4G/5G ESN Performance & Optimsiation domain are:

1. Validate 5G and 5+ design – via UE logs analysis and E2E tracing – develop action plan for performance uplift via parameter or feature optimisation - root cause of performance degradation, either from Oss trends, UE logs, crowd source data or other data sources.

2. Conduct feature and or parameter optimisation trials for 4G/5G/ 5G+ RAN vendors (Nokia and Ericsson) and assess outcomes, quantify gains and impacts to wider network services.

3. 5G Interworking with 4G, 5G SA, NSA.

4. Own and drive improvement in all factors impacting Performance & reporting with the goal of providing optimal Customer Experience.

5. Exceptional understanding of network performance trends with a view of rebase lining KPIs.

6. Identifying the root cause and define measures to improve underperforming KPIs.

7. Analysing drive test logs and Network protocol traces for underperformance & defects in ESN PTT over SRTP.

8. Investigate detected and reported Systematic issues within this element of the ESN Service.

9. Performance root cause analysis using multiple sources of data primarily from:

10. UE Application events/L1/L2/L3 information

11. Drive Test UE logs/Wireshark covering OSI L1-L7.

but also, from:

1. ENodeB and CN protocol analysis.

2. 3rd Party OTT (Over the Top) protocol traces.

3. Coverage data.

4. Capacity data.

5. OSS performance data

6. Change logs.

7. Stakeholder management – work with key SMEs to understand the root cause.

8. Excellent Team player – ability to uplift team by knowledge sharing

Technical Expertise:

Expert knowledge of UE logs analysis

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

Expert in Wireshark, TEMS, Accuver, Nokia and Ericsson eNB/gNB logging systems, tracing, and analysis.

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.

Requirements

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.

-Experience of Nokia RAN.

PREFFERRED:

-Knowledge of multiple vendor products including Nokia and Ericsson.

-Knowledge of industry best practice methodologies for analysing, defining and documenting the link between input business requirements and output technical solutions.

-Understanding of project management techniques and tools.

-Experience of managing relationships with suppliers and third parties, of product/feature selection and of delivering those products into a production environment.

-Experience of working with LTE/5G Commercial network based Public Safety solutions.

Our Company

Rubicon Consulting is a Talent management consultancy which helps you to optimise business performance and competitive advantage by choosing the right people first time