5G Network Engineer

5G RAN Optimisation Engineer - Network Optimisation - RAN technologies

Marshall Wolfe are hiring on behalf of our client, who are a leading telecoms organisation. They are seeking an experienced 5G RAN Optimisation Specialist to join a high-performing Network Performance & Optimisation team supporting a critical Public Safety Network programme.

This is a specialist role focused on 5G/5G+ performance optimisation, root cause analysis, and end-to-end network investigations across complex mobile network environments. You'll work closely with internal SMEs, vendors, and stakeholders to improve network performance, customer experience, and service reliability.

This is a 12 month contract, which can be based in London or Bristol

Key Responsibilities

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• Analyse UE logs, drive test data, Wireshark traces, OSS trends and protocol logs to identify performance issues.
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• Perform 4G/5G/5G+ parameter and feature optimisation activities across Nokia and Ericsson networks.
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• Conduct end-to-end investigations covering 5G SA, NSA, VoNR and network interworking scenarios.
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• Lead root cause analysis of network degradations and define optimisation plans to improve KPIs.
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• Validate network designs and assess performance impacts of new features and configurations.
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• Produce performance recommendations and operational best practices.
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• Collaborate with technical teams, suppliers and stakeholders to deliver performance improvements.
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Requirements:

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• Extensive experience in mobile network performance and optimisation within large-scale telecommunications environments.
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• Expert knowledge of 5G/5G+ investigations, RAN optimisation and end-to-end network troubleshooting.
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• Strong understanding of 4G LTE, 5G SA/NSA, VoNR, Network Slicing and SIP signalling.
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• Advanced experience with Wireshark, TEMS, Accuver, Actix, UE log analysis and protocol tracing.
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• Proven expertise analysing radio network KPIs, parameters, timers and performance metrics.
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• Experience working with Nokia and/or Ericsson RAN technologies.
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• Strong stakeholder management and communication skills with the ability to translate complex technical issues into clear business outcomes.
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Desirable:

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• Experience supporting Public Safety Network services.
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• Knowledge of SRTP/DTLS troubleshooting and optimisation.
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• Understanding of 3GPP and ETSI standards.
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• Experience working with third-party suppliers and vendors.
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• Knowledge of project delivery and telecommunications best practices.
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12 month contract Inside IR35 | London or Bristol based (hybrid working)