Voice Services Engineer

2 days ago

Athens, Attica, Greece Volton Full time €60,000 - €80,000 per year

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
  • Manage suppliers and subcontractors delivering products and services related to the mobile and fixed core network
  • Specify and document engineering, operations and change management procedures
  • Provide 2nd level support for network and subscriber-related problems
  • Participate in projects related to voice services
  • Test, verify and accept new software versions, functionalities and services
  • Participate in the change management process for live network configuration changes
  • Assist in troubleshooting resolving network emergency incidents

Requirements

  • Minimum of 3 years of experience in voice services or a similar role
  • University Degree in Telecommunications, Electrical/Electronic Engineering, IT or a related field
  • Solid understanding of voice network architecture and services (Voice, SMS, VoLTE)
  • Experience with IMS core nodes (e.g., CSCF, TAS, HSS) and related interfaces
  • Hands on involvement voice core nodes (e.g., GMSC, HLR, SBC, SMSC) and related interfaces
  • Familiarity with Cloud & Virtualization (NFV) technologies
  • Good understanding of IP networks and related protocol

Personal Skills

  • Excellent analytical and communication skills
  • Strong team spirit and collaboration
  • Problem-solving mindset with the ability to resolve issues quickly and effectively
  • Fluency in English, both oral and written

Benefits

  • A competitive fixed salary package aligned with your experience and expectations
  • Hybrid working model
  • Private insurance, corporate benefits and perks
  • Continuous training and professional development
  • Excellent professional environment
  • Modern and productive working facilities

Don't miss the chance to join a Great Place to Work-Certified Company that fosters a positive work environment, proudly recognized as a Best Workplace for Women 2025.

All applications will be treated with confidentiality. If your CV meets the requirements of the job, we will contact you by phone to schedule an appointment. Information about the company on our site

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