We’re looking for a SS7 Tester to join the technical team in our London office.

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 experience:

• Educated to 2:1 degree standard. (Maths or highly numerate subject qualifications would be advantageous)
• Experience commensurate with ~3 years working for large telecom organisations, having followed structured testing methodologies
• Good understanding of GSM/UMTS/LTE network and 3GPP standards.
• Experience of SS7 / Sigtran (MAP and SCCP) 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.

The following knowledge and experience is desirable:

• 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
• Good command of Linux.
• Experience of testing Diameter (LTE) protocols
• Experience of assisting with User Acceptance Testing (UAT) for external clients
• 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.