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.