We’re looking for a SS7 Tester to join the technical team in our London office (Option to work remotely).

The successful candidate will play a key role in our dynamic and award-winning technical team. You’ll be responsible for testing mission-critical systems that are delivered for mobile network operators, law enforcement and emergency service organisations worldwide.

Main Job Responsibilities:

  • Ensure products and releases reach a high level of quality before they are delivered to the client
  • Perform manual, automated and performance testing
  • Write test plans and reports including UAT test plans
  • Assist with UAT events

Expected minimum level of experience: 

  • Experience commensurate with ~5 years working for large telecom organisations, having followed structured testing methodologies 
  • Good understanding of GSM/UMTS/LTE network and 3GPP standards. 
  • Experience of SS7 (MAP and SCCP), Diameter signalling testing. 
  • Experience of OMA MLP 
  • Practical knowledge of automatic testing tool such as JMeter.  
  • Experience of Protocol Analyzer tools like tcpdump, snoop etc. 
  • Experience of writing test scripts (Bash, etc.) and writing simple SQL queries. 
  • Experience of exploratory testing. 
  • Good command of Linux.

Desired knowledge and skills:

  • Experience of Core / Radio Network interface testing 
  • Experience of telecoms infrastructure with respect to that involved in location calculations e.g. GMLC, SMLC. 
  • Experience of performance testing  
  • Experience of testing SIP protocol 
  • Experience of 3GPP Rel 16/17 for 5G 
  • Experience of Cloud native architectures 
  • Experience of writing telecom test frameworks using CPPUnit/Google C++/TCLTk 
  • Very good skills documenting and organising the UAT deliverables 
  • Experience of (math) algorithm testing.