Voice core services - voice specialist | Lisbon

We are a forward-looking company, committed to excellence and customer satisfaction.

We offer state-of-the-art fixed and mobile solutions, television, internet, voice, and data for all market segments. We are leaders in film distribution and exhibition, being the exhibitor with the most complexes and rooms. We believe in the power of technology to tackle the environmental and social challenges we face. We are part of something bigger than ourselves, and our ambition is to leave a positive mark in everything we do.

In order to continue to ensure and evolve the services we provide to our customers, we are recruiting a Voice Core Services Specialist, to join our Operations Division.

What we expect from you

• Enjoy working and evolving in cutting-edge technology in the Telco area, operating, maintaining, and accepting voice systems and services in a Core VoLTE and IMS environment, ensuring their stability and performance.
• Plan, manage, and execute end-to-end projects, from design to implementation, related to the evolution and optimization of voice systems and services in Core VoLTE and IMS
• Develop and implement automation solutions using Java/Javascript functions or on-premises AI agents to optimize Operations and Maintenance (O&M) processes, increasing efficiency and reducing manual intervention - solving real operational problems.
• Specify and implement automation tools and functions for monitoring Quality of Service (QoS) indicators and other KPIs, ensuring a clear view of service performance.
• Evaluate service KPIs and implement manual actions or create automations to correct or improve the network and services based on performed analyses.
• Develop and implement robust and automatic Contingency Plans, and be able to execute them in critical situations to ensure maximum service availability.

What we are looking for

• Higher education in Engineering (preferably Telecommunications/Computer Science).
• At least 2 years of proven experience in the operation, maintenance, and acceptance of Voice Services in IMS and VoLTE environments.
• Proficiency in evaluating service KPIs and executing appropriate actions in the network and services.
• Experience in reading and in-depth analysis of voice and data communication protocols (e.g., SIP, Diameter, RTP, DNS, HTTP).
• Experience in developing, implementing, and executing Contingency Plans in critical situations.
• Proficiency in Linux operating systems.
• Experience in programming in Java and JavaScript and using IDEs (preferably VS Code) and GitHub
• Experience working in a team, with clear distribution of roles and responsibilities.
• Proactive, flexible profile, with a strong willingness to learn and solve challenges, emotionally intelligent, collaborative, and communicative.

What we have to offer

• Self-learning platforms with over 20,000 updated courses and suggestions for Learning Paths and internal collaboration initiatives among teams for continuous learning and contact with the latest news and trends in various areas.
• An environment where modernization is constant - we combine Telco with intelligent automation.
• Modern tools and practices: AI-assisted development (GitHub Copilot with Claude Sonnet, vibecoding), CI/CD with GitHub Actions.
• We regularly implement various initiatives to promote well-being, emotional stability, social ties, and work-life balance.
• We offer all our employees a benefits package, as well as discounts on the purchase of NOS products and services.
• We have a wide range of partnerships with discounts and exclusive conditions for our employees.