Senior Wireless Core Network Operations Engineer

Persistent Systems Limited; Pune District; On-site; INR 2,500,000 - 4,500,000; Full time

Benefits offered by this job

Competitive salary & benefits

Growth opportunities & education

cutting-edge technologies

Flexible work hours

Job summary

Persistent Systems Limited is seeking a Senior Wireless Core Network Operations Engineer to lead end-to-end administration of HLR/HSS systems and optimize wireless core services. You will troubleshoot signaling, manage subscriber provisioning for 3G/4G, and collaborate with cross-functional teams to ensure high availability.

The role emphasizes capacity planning, change management, and documentation, with a focus on operational excellence and cutting-edge telecom solutions.

Qualifications

• 8–15 years of experience in Wireless Core Network Operations.
• Strong hands-on in HLR/HSS administration, monitoring, maintenance, and optimization.
• Extensive experience with 3G/4G subscriber management platforms and core network systems.
• Deep understanding of SS7 and Diameter signaling protocols.
• Excellent analytical and collaborative skills.

Responsibilities

• Administer, monitor, and maintain HLR/HSS systems for optimal performance and availability.
• Support end-to-end subscriber management for wireless services across 3G/4G.
• Monitor, troubleshoot SS7 and Diameter signaling issues affecting operations.
• Collaborate with engineering, operations, and vendors to support core network services.
• Perform configuration, upgrades, patch management, and preventive maintenance.
• Conduct health checks and implement best practices to improve reliability.
• Investigate incidents, outages, and SLA-bound issues.
• Participate in capacity planning and performance tuning.
• Develop runbooks and technical documentation.

Skills

HLR/HSS administration

SS7 signaling

Diameter signaling

3G/4G subscriber management

Networking fundamentals

Scripting & automation

Cloud telecom concepts

Problem solving

Tools

Network monitoring tools

Telecom signaling tooling

Job description

Senior Wireless Core Network Operations Engineer

Job Description

About Persistent

We are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients anticipate what's next. Our offerings and proven solutions create a unique competitive advantage for our clients by giving them the power to see beyond and rise above. We work with many industry-leading organizations across the world, including 20 Fortune 50 companies and 4 of the 5 top banks in both the US and India, and numerous innovators across the healthcare ecosystem.

We are seeking a highly skilled Senior Wireless Core Network Operations Engineer to join our Wireless Core Network Operations team. This role is responsible for the end-to-end administration, monitoring, maintenance, and optimization of HLR/HSS systems that support mission-critical wireless services. The ideal candidate will possess strong expertise in wireless core network technologies, subscriber management platforms, and telecom signaling protocols, ensuring high availability, reliability, and operational excellence across the wireless network environment.

• Role: Senior Wireless Core Network Operations Engineer
• Location: All Persistent Locations
• Experience: 8 to 15 Years
• Job Type: Full-Time Employment

What You'll Do:

• Administer, monitor, and maintain HLR/HSS systems to ensure optimal performance, availability, and operational stability.
• Support end-to-end subscriber management for wireless network services across 3G and 4G environments.
• Monitor and troubleshoot complex issues related to HLR/HSS platforms, subscriber provisioning, and network signaling.
• Analyze and resolve SS7 and Diameter signaling issues affecting wireless service operations.
• Collaborate with engineering, operations, and vendor teams to support mission-critical wireless core network services.
• Perform system configuration, upgrades, patch management, and preventive maintenance activities.
• Conduct operational health checks and implement best practices to improve system reliability and performance.
• Investigate and resolve network incidents, outages, and service-impacting issues within defined SLAs.
• Participate in capacity planning and performance tuning activities to support growing subscriber demands.
• Monitor network performance metrics and recommend improvements to optimize service delivery.
• Develop and maintain operational procedures, troubleshooting guides, and technical documentation.
• Support change management, deployment, and network optimization initiatives.
• Stay updated on emerging technologies, standards, and advancements within wireless core networks.

Expertise You'll Bring:

• 8–15 years of experience in Wireless Core Network Operations and telecom network support environments.
• Strong hands-on expertise in HLR/HSS administration, monitoring, maintenance, and optimization.
• Extensive experience supporting 3G/4G subscriber management platforms and wireless core network systems.
• Deep understanding of SS7 and Diameter signaling protocols.
• Solid foundation in networking concepts, telecom infrastructure, and wireless communication technologies.
• Proven experience troubleshooting complex subscriber, provisioning, signaling, and network-related issues.
• Experience supporting large-scale wireless deployments and mission-critical telecom services.
• Strong analytical and problem-solving skills with the ability to diagnose and resolve complex operational issues.
• Experience performing capacity planning, performance management, and system tuning activities.
• Familiarity with network monitoring and performance management tools.
• Knowledge of telecom security practices and wireless network protection frameworks.
• Experience with scripting and automation technologies for operational efficiency is preferred.
• Exposure to cloud-based telecom solutions and modern network architectures is an advantage.
• Strong documentation skills with experience creating operational procedures and support runbooks.
• Excellent communication and collaboration skills with the ability to work effectively across cross-functional teams.
• Ability to manage multiple priorities in a fast-paced operations environment while maintaining high service availability.
• Competitive salary and benefits package
• Culture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certifications
• Opportunity to work with cutting-edge technologies
• Employee engagement initiatives such as project parties, flexible work hours, and Long Service awards
• Insurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents

Values-Driven, People-Centric & Inclusive Work Environment:

Persistent is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals, including those with disabilities, and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.

• We support hybrid work and flexible hours to fit diverse lifestyles.
• Our office is accessibility-friendly, with ergonomic setups and assistive technologies to support employees with physical disabilities.
• If you are a person with disabilities and have specific requirements, please inform us during the application process or at any time during your employment

“Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.”