Voice Services Engineer, Volton, GR

Volton Hellenic Energy SA is a Greek company that is dynamically active and is rapidly increasing its capacity in the field of Electricity Supply and Trading, in the Gas Energy Sector and in the field of Telecommunications (through Orizon).

By offering reliable services that meet the ever-growing energy needs of businesses and households, Volton aims to build solid and trustful relationships with its customers. The company's ambition is to become one of the most important companies in the industry and remain at the forefront of developments as the first multiservice provider combining Electricity, Natural Gas and Telecommunications.

As part of its development Volton strengthens its human resources in Athens and seeks a Voice Engineer.

Responsibilities

• Design, develop and operate network nodes supporting: Mobile voice & SMS services, Fixed voice services, Online charging systems
• Specify and document engineering, operations and change management procedures
• Participate in the change management process for live network configuration changes
• Test, verify and accept new software versions, functionalities and services
• Assist in troubleshooting resolving network emergency incidents
• Provide 2nd level support for network and subscriber-related problems
• Manage suppliers and subcontractors delivering products and services related to the mobile and fixed core network
• Participate in projects related to voice services
• Collect marketing, technology and security requirements for SIM card development and updates
• Manage the SIM card lifecycle, from the supply chain to their operation in the company's network
• Manage and operate systems and applications related to SIM cards and mobile terminals (Over-the-Air, eSIM and Device Management) in cooperation with suppliers and subcontractors
• Test mobile handsets and terminals to ensure compatibility with the company's network