MCX Test Engineer

MCx / 5G / LTE Testing Contractor – 9 Month Contract

Location: Cambridge – Onsite

Duration: 9 months

My client is looking for an experienced Telecoms Test Engineer to support a 9-month project focused on the testing and validation of Mission Critical Communications (MCx) services across 4G/LTE and 5G networks.

The role will involve hands-on, end-to-end manual testing of MCx user call features, working across the relevant mobile, IMS and signalling environments.

Key Responsibilities

• Execute end-to-end manual testing of MCx user call features and services.




• Test 4G/LTE and 5G-based communications and associated functionality.




• Perform testing across IMS and SIP-based environments.




• Analyse network and signalling logs to identify issues and support troubleshooting.




• Execute test cases, document results and raise defects where required.




• Work closely with engineering and development teams to investigate and resolve issues.




• Support testing against relevant telecoms standards and specifications.

Required Skills & Experience

• Strong hands-on experience with 4G/LTE and/or 5G testing.




• Good understanding of IMS and SIP.




• Commercial experience with MCx / Mission Critical Communications, particularly MCPTT or related services.




• Strong background in manual telecoms testing and validation.




• Experience analysing telecoms/network traces and troubleshooting signalling issues.




• Familiarity with 3GPP specifications.




• Experience with Wireshark and telecoms log analysis.




• Experience using Valid8 or similar telecoms testing platforms.




• Knowledge of RTP/RTCP, Diameter or related IMS protocols.




• Experience testing MC-PTT, MC-Video or MC-Data.




• 9-month initial contract.




• £45–£55 per hour, depending on experience.

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