About the role
You will watch over our telecommunications platform around the clock. You will analyse signalling and media to fix quality and routing issues, work with partner networks on incidents, and act fast on unusual or fraudulent traffic.
What you will do
- Monitor traffic, quality metrics and alerts (ASR, ACD, PDD)
- Troubleshoot SIP signalling and RTP media issues
- Manage routing changes and partner interconnects
- Detect and act on unusual or fraudulent traffic
- Handle tickets with partner networks through to resolution
- Keep clear incident records and reports
Minimum qualifications
- Bachelor's degree in Telecommunications, Computer Science or a related field, or equivalent practical experience
- 4+ years in a NOC or telecommunications operations role
- Expert SIP and RTP troubleshooting with Wireshark or sngrep
- Daily work on a softswitch or session border controller
- Quality metrics (ASR, ACD, PDD, MOS)
- Linux and IP networking (CCNA level)
- English at CEFR C1 or above (IELTS 7.0 or equivalent)
Expert knowledge
- SIP in depth: call flows, response codes and SDP negotiation
- Media quality: jitter, packet loss, codecs and MOS
- Routing and number analysis on softswitches
- Fraud detection: unusual traffic patterns and automatic blocking
Preferred qualifications
- FreeSWITCH, Kamailio or Asterisk
- CCNA or CCNP Collaboration
- Fraud detection
- Python or Bash scripting
Before any offer we verify your certificates, qualifications, references and right to work in the UK. Security roles also need background screening (BPSS) and may need security clearance.
SOWTK is an equal opportunity employer. We welcome applicants of every background and do not discriminate on any characteristic protected by the Equality Act 2010.