Join our Team
About This Opportunity
We are hiring across multiple levels within our Fixed Line Core and IMS VOBB operations team — from skilled L2 Engineers to experienced Senior Engineers and strategic Team Leads. You will be part of a high-performing, multi-vendor network environment supporting critical voice, signaling, and IMS infrastructure across platforms from Ericsson, Nokia, Oracle, Ribbon, Tekelec, and Genband. Whether you are building your core network career or leading a team through technology transformation, this is a compelling opportunity to grow and make real impact in a technically rich, fast-evolving environment.
You Will Bring
Engineer (Level 2)
- 2–4 years of experience in fixed line core or VOBB network operations
- Basic understanding of SS7, SIGTRAN, SIP, and Diameter protocols
- Foundational knowledge of IMS architecture and VoIP concepts
- Familiarity with telecom nodes — DSR, STP, SBC, HLR/SDM
- Working knowledge of Linux/Unix environments
- Understanding of VOBB and fixed line call flows
- Strong troubleshooting mindset and analytical skills
Senior Engineer (Level 3)
- 4–8 years of experience in fixed line core and IMS/VOBB networks
- Strong expertise in IMS Core functions — CSCF and TAS
- Deep knowledge of SS7, SIGTRAN, Diameter routing, SIP, and RTP
- Hands-on experience with Wireshark and protocol-level trace analysis
- Understanding of high availability and network redundancy design
- Scripting skills in Python or Shell (advantageous)
- Detailed end-to-end understanding of VOBB and fixed line call flows
What Will You Do
Engineer (Level 2)
- Monitor and maintain network nodes including Ribbon SBC & Analytics, Oracle STP/SBC (MNP & EIR), Nokia MSS & Media Gateway, Ericsson IMS/SDM/5GC, and Genband DMS/CS2K/C20
- Perform alarm monitoring, first-level fault analysis, and incident ticket management
- Execute routine health checks and preventive maintenance activities
- Support incident resolution under guidance of senior engineers
- Perform basic configuration changes and operational script execution
- Maintain accurate network documentation and update records
Senior Engineer (Level 3)
- Lead advanced troubleshooting across Tekelec DSR, Oracle STP/SBC, Ribbon SBC & Analytics, Nokia MSS & Media Gateway, Genband DMS/CS2K/C20/TAS, and Ericsson IMS/vIMS/VoLTE TAS/SDM/csDRA/5GC
- Conduct deep protocol analysis across SIP, Diameter, and SS7 layers
- Manage and resolve critical incidents (P1/P2) and lead Root Cause Analysis (RCA)
- Optimize network performance and contribute to capacity planning
- Implement configuration changes, software upgrades, and network migrations
- Support interconnect management, call routing, and subscriber service configurations
- Collaborate with vendors for bug fixes, patches, and technical escalations
Key Qualifications
- Bachelor's or Master's degree in Telecommunications, Computer Science, Electrical Engineering, or a related field
- Relevant experience based on level — 2–4 years (L2), 4–8 years (L3), 8–15+ years (Team Lead)
- Knowledge of core telecom protocols — SS7, SIGTRAN, SIP, Diameter, and RTP
