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Senior Manager_2L Voice Core Specialist - VOIS

Aggregate function:  Technology
Business Area:  VT Network Operations
Posting Country:  India
Date Posted:  6 Feb 2026
Full Time / Part Time:  Full Time
Contract Type:  Permanent

At Vodafone, we’re working hard to build a better future. A more connected, inclusive and sustainable world. As a dynamic global community, it's our human spirit, together with technology, that empowers us to achieve this. 

We challenge and innovate in order to connect people, businesses, and communities across the world. Delighting our customers and earning their loyalty drive us, and we experiment, learn fast and get it done, together.

With us, you can be truly be yourself and belong, share inspiration, embrace new opportunities, thrive, and make a real difference.

Who we are

VOIS (Vodafone Intelligent Solutions) is a strategic arm of Vodafone Group Plc, creating value for customers by delivering intelligent solutions through Talent, Technology & Transformation.
As the largest shared services organisation in the global telco industry with 30,000 FTE, our portfolio of next-generation solutions and services are designed in partnership with customers across Vodafone Group, local markets, and partner markets to simplify and drive growth. With our strategic partner Accenture, we work alongside our Vodafone customers, other Telco and tech companies to drive transformation, meet the challenges of our industry and ensure we stay relevant and resilient. This partnership is a unique, industry-first model which brings together the best of in-house and 3rd party capability.
We work with customers across 28 countries from 10 VOIS locations: Albania, Egypt, Hungary, India, Romania, Spain, Turkey, UK, Germany, Ireland, and with a network of teams in Czech Republic, Italy, Greece, and Portugal.
#VOIS #BeUnrivalled #CreateTheFuture

About this Role

We are seeking a skilled individual to oversee, support, and enhance IMS and CS Core network elements, ensuring high service availability and performance. This role involves incident resolution, proactive monitoring, configuration management, and collaboration with vendors and cross-functional teams. The individual will contribute to service reliability, performance optimisation, and seamless service introduction activity across the voice core domain.

What you’ll do

  • Support and manage IMS and CS Core network elements such as MTAS, CSCF, HSS, IPWorks, MSC, MGW, SBC, and STP.
  • Safeguard service availability through maintenance, monitoring, and resolving incidents.
  • Participate in a 24x7 on-call rotation to ensure timely support.
  • Analyse service failures, conduct root cause analyses, and implement sustainable resolutions.
  • Monitor KPIs, identify performance trends, and propose improvements to protect network availability.
  • Perform regular health checks, resilience assessments, and proactive service assurance tasks.
  • Configure new number ranges, support fraud barring requirements, and assist in isolating network nodes when needed.
  • Support supplier and vendor management, SLA adherence, and audit preparations.
  • Contribute to change management processes ensuring risk-free implementation of planned changes.
  • Assist in software lifecycle management, including testing and rollout of new software versions.
  • Promote knowledge sharing and provide guidance to less experienced team members.
  • Communicate effectively with stakeholders, ensuring clarity in technical updates and issues.

Who you are

Skilled in IMS architecture (CSCF, MTAS, HSS, SBC) and CS Core network components (MSC, MGW).Experienced in telecom protocols including SIP, Diameter, SS7, and SIGTRAN.Knowledgeable in VoLTE or VoNR call flows and IMS registration procedures.Comfortable working in virtualised environments such as VMware, OpenStack, and Linux OS.Able to apply troubleshooting skills using tools and scripting languages (Python or Bash preferred).Adaptive, collaborative, and able to work effectively within a 24x7 operational environment.Holds experience working in multi-vendor environments (Ericsson, Huawei, Nokia).Possesses a Bachelor’s degree in Telecommunications, Electronics, or Computer Engineering, with relevant certifications preferred.

Not a perfect fit?

Concerned you may not meet every requirement? Vodafone is committed to creating an inclusive workplace where everyone can thrive. If you are excited about this role but your experience does not align exactly with every aspect of the job description, you are encouraged to apply. You may be the right candidate for this or another opportunity, and the recruitment team will support you in exploring where your skills fit best.

What's in it for you

Opportunities to gain exposure to advanced IMS and CS Core technologies and multi-vendor environments.Experience collaborating with global teams and industry-leading partners.Engagement in innovative transformation initiatives across the telco domain.A supportive environment encouraging knowledge sharing, upskilling, and professional growth.

What skills you will learn

Advanced troubleshooting and performance analysis across IMS and CS Core systems.Vendor and SLA management within complex telecom ecosystems.Change management and risk-controlled implementation techniques.Service assurance practices including resilience testing and KPI-based optimisation.Cross-functional collaboration and communication within a global operations setup.

VOIS Equal Opportunity Employer Commitment

Vodafone recognises and celebrates the value of diversity in building a workforce that reflects the customers and communities it serves. No form of discrimination is tolerated. This includes, but is not limited to, discrimination based on race, colour, age, veteran status, gender identity, gender expression, sexual orientation, pregnancy, maternity or parental status, ethnicity, disability, religion or belief, political affiliation, trade union membership, nationality, citizenship, indigenous status, medical condition, HIV status, neurodiversity, social origin, cultural background, marital or civil partnership status, or socio-economic background.

Join Us

At Vodafone, we’re working hard to build a better future. A more connected, inclusive and sustainable world. As a dynamic global community, it's our human spirit, together with technology, that empowers us to achieve this.
We challenge and innovate in order to connect people, businesses, and communities across the world. Delighting our customers and earning their loyalty drive us, and we experiment, learn fast and get it done, together.
With us, you can be truly be yourself and belong, share inspiration, embrace new opportunities, thrive, and make a real difference.

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