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Senior Device Integration Engineer

Date: 13-Jan-2021

Location: SLOUGH, GB

Company: Telefónica S.A.

Here at O2, we’re about technology that creates exciting experiences. It’s why there are over 25 million people who choose to live life on O2. 

Being part of Telefonica, one of the world’s most creative digital companies, we’re able to open up all sorts of possibilities – not just for customers, but for the people who work for us, too. 

Great benefits. Great rewards. High-quality training. Ongoing career development. Flexible working. These are just some of the reasons we attract great talent. 

Our inclusive approach to recruitment helps us be a true reflection of our customers and their communities. That’s why everybody’s welcome at O2 – it’s time to get everyone in the room. 



12 month Secondment 


Location: Buck Ave, Slough


About the Team:


The Device Network Integration Team are responsible for ensuring that O2 devices provide the best network and customer experience and that devices are compliant to internal and industry standards.



Your Role:


This is a senior technical engineering role working within the Device Integration and Test areas reporting to the Device Integration Manager.


This role is required to ensure all devices are fully assessed against internal and industry standards prior to use in the O2 Network.





  • To provide technical leadership in an engineering team responsible for confirming the device to network compatibility for new and updated 3G/4G/5G devices
  • To include root cause analysis of issues found and ensuring compliance to internal and industry standards
  • To contribute to O2 device technical requirements and to report on device performance and capability
  • To liaise closely with device vendors, technical account managers and other internal teams on delivery and defects to ensure timely fault resolution
  • To perform device testing at a radio protocol level and provide technical engineering support to major device and network related projects



Skills & experience:


  • A detailed protocol knowledge of 5G-NR, LTE, VoLTE, UMTS and GSM interfaces between UE, radio and core networks is required
  • Demonstrable experience in UE network integration and test and previous experience of Nokia or Ericsson RAN is required
  • Knowledge of 3GPP UE conformance test specifications and requirements is required
  • The ability to use Network Protocol Analyzers, handset logging tools and test automation is required
  • Excellent interpersonal and analytical skills are required with an appropriate degree, or equivalent, with at least 3 years’ experience
  • Evidence of a collaborative way of working, along with the ability to build and lead both internal and external relationships is required



Additional Information:



Grade: PTG




We’re looking to pay a generous salary (depending on experience) for this position. We also offer plenty of extras to sweeten the deal, which could include things like bonuses, life assurance cover, health care and lots of flexible benefits.  

We also believe a great work-life balance is important, so we’re open to considering part-time and flexible approaches to working.   Like to know more, feel free to raise it.  

If you have any questions around the role then please email who will be happy to help. 

Due to the potential conflict of interest, unfortunately we’re unable to accept applications for secondments from individuals currently working for Tesco Mobile