Advanced VoIP Engineer

We are looking for a mature candidate for the position of Advanced VoIP Engineer to join a project with a Ukrainian telecom operator.

Requirements:

• Administration and operation: SBC (vSBC) (A-SBC / I-SBC).
• Administration and operation: Linux (cockpit / iptables / KVM / updates).
• VoIP protocols: H.323, SIP/SIP-I/SIP-T, MGCP, SIGTRAN, GSM/UMTS.
• Monitoring protocols: SNMP, HDR.
• Number matching and translation rules (HMR)
• Support for telephony networks - L1/L2 support.
• Studying emerging problems in the laboratory. PoC creation.
• Python Scripting (task and process automation).
• Knowledge of PBX systems like Asterisk.
• Knowledge of Radius and Diameter protocols.
• Writing project documentation - HLD/LLD/NMP/ATP.
• Knowledge/understanding of IMS/NGN architecture.
• Familiarity with REST APIs for custom configuration and KPI monitoring.
• Security and protection: IPSEC / TLS / SRTP / DDOS. 
• Media and signaling validation to prevent service theft and fraud.
• CCNP/CCSP level will be a plus.
• Acme Packet (Oracle) knowledge  will be a plus
• English (reading, writing)

Responsibilities:

• Participation in implementation and migration projects.
• Audit of existing solutions.
• Preparation of HLD/LLD/NMP/ATP documentation.
• Participation in technical meetings with the Customer.
• Maintenance, and support during and after implementation. 
• Responding to Customers' support requests and resolving them in coordination with vendors.
• Creation of PoCs to test technical solutions and concepts.
• Participation in pre-sale activities in the VoIP domain. 
• Passing the necessary exams to maintain partner status.
• Reporting on work done and current tasks.