Networks Test Engineer

1 month ago


Birmingham, Birmingham, United Kingdom National Physical Laboratory Full time

Job Summary

We are seeking a highly skilled Networks Test Engineer to join our UKTL Lab & Test Networks team. As a key member of the team, you will be responsible for the operation and maintenance of the UK Telecoms Lab Radio Access Networks.

Key Responsibilities

  • Maintain and improve the effectiveness and efficiency of the UKTL Radio Access Networks and related operational processes.
  • Act as the first point of contact for RAN and O-RAN technical matters within the team.
  • Coordinate with the wider network and infrastructure team, as well as key vendors and 3rd party partners to ensure capabilities and services are delivered to a consistently high level.
  • Prepare and update technical and operational documentation and ensure they are kept up to date on our document management system.
  • Implement and maintain systems and databases, ensuring they are compliant and accurate.

Requirements

  • Extensive 4G/LTE, 5G RAN & O-RAN testing experience.
  • Solid working knowledge of 4/5G Radio Access Network technology.
  • Extensive recent experience in RAN & O-RAN system integration, testing and troubleshooting.
  • Strong end-to-end RAN knowledge with a focus on 4/5G.
  • RAN Technologies (vRAN, Small Cells, MIMO, Timing and Sync with GPS, PTP).
  • Understanding of Networking Protocols like IP, TCP, SCTP, IPSEC.
  • Understanding of 3GPP standards, including procedures, call flows, KPI, statistics.
  • End-to-end testing in all areas - IMS calls (eNodeB, MME, SGW, PCR, SBG, CSCF, MTAS).
  • Good understanding of Layer 2 & 3 messages, RRC/RLC Layers.
  • Analysing and diagnosing main RF Issues like Dropped calls, Blocked calls, Handover Failures, Interference, RACH failures, etc.
  • Good experience in analysing the Core Network elements issues.
  • Working knowledge or testing Nokia and Ericsson RAN.

What We Offer

We strive to offer a great work-life balance and flexible working options. If you are looking for a full-time, part-time or flexible role, we will try to make this work where possible.

Security Clearance

To work in this role, you will need to have an SC clearance with no restrictions, or you must have the ability to obtain an SC clearance.



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