NW SAC Backoffice expert Lisboa

Join to apply for the NW SAC Backoffice expert role at Vodafone.

At Vodafone, we’re shaping the future of connectivity for our customers and for everyone who joins our team. We’re part of a global mission to connect people, solve complex challenges, and create a sustainable, more inclusive world. We offer learning opportunities and a healthy work/life balance.

Role Overview

You will be part of a high‑performing team responsible for the consistent delivery of high‑quality, reliable, and resilient services across the organization by proactively monitoring, managing, and improving service performance. As a voice core specialist, you will handle configuration, implementation, and lifecycle management of voice core network solutions, ensuring service excellence and operational efficiency across IMS, Legacy Voice, and Vo
LTE platforms.

What You’ll Do

• Oversee L3 support and act as the final escalation point for complex voice‑related incidents.
• Support and contribute to the implementation of AI/ML‑powered tools for diagnostics and performance monitoring.
• Ensure compliance with regulatory and security standards in voice service delivery.
• Handle vendor relationships (e. g. , Ericsson, Oracle, Huawei), ensuring SLA adherence and lifecycle alignment.
• Coordinate cross‑functional projects including 5GSA voice readiness and service evolution.
• Own documentation standards and contribute to high‑ and low‑level design and support materials.
• Collaborate with engineering and operations teams to ensure seamless integration and support of voice services.

Who You Are

• Degree in Telecommunications, Computer Science, or equivalent experience.
• Familiarity with regulatory and security standards in telecom environment.
• Deep understanding of voice core technologies (IMS, SS7, Vo
  LTE, Vo
  Wi
  Fi, 5GSA).
• Proven experience in IMS architecture and protocols (SIP, Diameter, HTTP, INAP, LDAP, DNS, DHCP, ISDN).
• Deep understanding of SS7/Diameter signalling and its role in policy and charging control.
• Knowledge of ISDN and legacy voice interconnects.
• Experience with core network elements: HSS, PCRF, MGW, SBC, and interconnect gateways.
• Strong analytical and troubleshooting skills in multi‑vendor environments.
• Excellent problem‑solving and decision‑making in high‑pressure scenarios.
• Ability to drive innovation and continuous improvement in service assurance.
• Experience leading technical projects and teams in telecom or network operations.
• Solid knowledge of voice core network architecture and protocols.
• Ability to communicate technical concepts clearly to diverse stakeholders.

Not a perfect fit?

If you’re excited about this role but your experience doesn’t align exactly with every part of the job description, we encourage you to still apply as you may be the right candidate for this role or another opportunity.

What’s In It For You

• Hybrid Work Model – Flexible hybrid model with 8‑10 in‑office days per month.
• Vodafone Products and Services – Mobile phone, free communication plan, data card, and discounts.
• Recognition – Programs for innovative, creative, high‑potential employees.
• Health and Well‑being – Well‑being program with nutrition, psychological consultations, webinars, workshops, and discounts.
• Learning – Access to Communities of Practice and a digital training platform.
• Local and International Mobility – Internal recruitment with local and international rotation opportunities.

Who We Are

Vodafone is a leading international telco serving millions of customers worldwide. We believe connectivity is a force for good, empowering people and protecting the planet. We value belonging, diversity and inclusion. If you require reasonable adjustments during recruitment, refer to our accessibility guide.