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MS Specialist OSS

Nokia

Nokia

India
Posted on Nov 28, 2025
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We are seeking a highly skilled and motivated Specialist in Core/Packet Core to join our team. Your experience in troubleshooting CMM and Core Mobile Gateway, IP Multimedia Subsystem & Subscriber Data Management products with a holistic approach in isolating/resolving faults in Core/CPC solutions running both in Bare Metal and Cloud-based networks. Troubleshoot critical complex cases involving multiple Network Elements, both in horizontal axis (call flow related) and vertical axis (cloud infra related). And for Enterprise Networks (Private Wireless LTE). This role requires a blend of expertise in Multi-Domain Network Elements.

About Nokia

Join us in creating the technology that helps the world act together.

We are a B2B technology innovation leader, pioneering networks that sense, think and act™, putting the world’s people, machines and devices in sync to create a more sustainable, productive and accessible future.



About the Business Group

Join Mobile Networks (MN) and help us become the trusted partner of choice for Communications Service Providers (CSPs), as well as for non-CSP entities in sectors like utilities, transportation, public services, and defense. Your work will contribute to delivering unbeatable customer experiences in wireless connectivity.


Our recruitment process

We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect.

If you’re interested in this role but don’t meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives, and experiences enrich our teams, and you may be just the right candidate for this or another opportunity.

The length of the recruitment process may vary depending on the specific role's requirements. We strive to ensure a smooth and inclusive experience for all candidates. Discover more about the recruitment process at Nokia.
Some of our benefits:
  • Flexible and hybrid working schemes
  • A minimum of 90 days of Maternity and Paternity Leave, with the option to return to work within a year following the birth or adoption of a child (based on eligibility)
  • Life insurance to all employees to provide peace of mind and financial security
  • Well-being programs to support your mental and physical health
  • Opportunities to join and receive support from Nokia Employee Resource Groups (NERGs)
  • Employee Growth Solutions to support your personalized career & skills development
  • Diverse pool of Coaches & Mentors to whom you have easy access
  • A learning environment which promotes personal growth and professional development - for your role and beyond

We are seeking a highly skilled and motivated Specialist in Core/Packet Core to join our team. Your experience in troubleshooting CMM and Core Mobile Gateway, IP Multimedia Subsystem & Subscriber Data Management products with a holistic approach in isolating/resolving faults in Core/CPC solutions running both in Bare Metal and Cloud-based networks. Troubleshoot critical complex cases involving multiple Network Elements, both in horizontal axis (call flow related) and vertical axis (cloud infra related). And for Enterprise Networks (Private Wireless LTE). This role requires a blend of expertise in Multi-Domain Network Elements.

You Have:

  • Any Bachelor's degree with 5 to 8+ years of experience in Nokia (5G Core Nodes AMF, SMF, UPF, NRF, and LTE Nodes – IP Multimedia Subsystem & Subscriber Data Management nodes).
  • Understanding call flows of 5G / LTE like Registration, Re-Registration, De-Registration, VoLTE Call, Break-in / Break-Out, Hand-over, roaming etc.
  • Excellent knowledge of LTE and 5G EPC / 5G Core Architecture Interface and Protocols.
  • Good Understanding of service-based architecture concepts/Network Slicing

It would be nice if you also had:

  • Knowledge of Cloud Native Architecture and experience in Microservices, Kubernetes, Docker, and Containers.
  • Exposure in the IMS/SDM architecture with all the nodes.

  • Resolution & providing technical support for the incidents reported/requests for Packet Core nodes/Core nodes (Analysis, Troubleshooting & fixing the issues reported) on already deployed to the end customer/user.

  • Exposure to e2e troubleshooting with CMM and Core Mobile Gateway involved (Call flow and cloud infra).

  • Exposure to e2e troubleshooting with IP Multimedia Subsystem & Subscriber Data Management involved (Call flow and cloud infra).

  • Configure and maintain the 5G SA Core Network, coordinating closely with project teams for design reviews and integration activities.

  • Prepare, implement, and verify configurations for nodes or systems, documenting methods of procedure (MOP) and work

  • RCA problem-solving with the care team to identify and mitigate underlying issues, outages internally and towards customers.

Apply now
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