About Position: We are seeking an experienced Wireless Core Engineer to join our Wireless Core Network Operations team. The role focuses on end-to-end administration and operations of HLR/HSS systems, supporting mission critical wireless services. The ideal candidate will act as an SME for Wireless Core, with strong hands-on expertise in 3G/4G core networks, signaling protocols, and production troubleshooting.Role: Wireless Core Engineer Location: All Persistent LocationsExperience: 5 to 12 YearsJob Type: Full Time EmploymentWhat You'll Do: Perform end‑to‑end operations and administration of HLR, HSS, and SMSC systemsAct as an SME for Wireless Core Network OperationsSupport subscriber management and provisioning across 3G, 4G, and 5G networksMonitor, troubleshoot, and resolve complex HLR/HSS/SMSC production issues under SLAAnalyze and debug SS7, MAP, Diameter, VoLTE, and SGd call flowsSupport system deployment, software upgrades, and subscriber migrationsWork on STP and DRA architecture, call routing, and signaling optimizationCollaborate with vendors, NOC teams, and cross‑functional engineering teamsEnsure high availability and performance of wireless core servicesParticipate in incident management, root cause analysis, and preventive actionsExpertise You'll Bring: 5+ years of hands‑on experience in HLR/HSS operations and administrationStrong knowledge of Wireless Core Network architecture including HLR, HSS, SMSC, STP, and DRAExpertise in 3G and 4G call flows with exposure to 5GProficiency in SS7, MAP, Diameter, VoLTE, and SGd signalingExperience with HLR/HSS and SMSC deployment, upgrades, and subscriber migrationStrong troubleshooting skills in production wireless core environmentsExperience working under pressure in mission‑critical telecom operationsSolid understanding of subscriber data management and signaling protocolsHands‑on experience with Linux/Unix system administrationWorking knowledge of Kubernetes environmentsGood scripting skills for automation and operational supportStrong analytical and problem‑solving abilitiesBenefits:Competitive salary and benefits packageCulture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certificationsOpportunity to work with cutting-edge technologiesEmployee engagement initiatives such as project parties, flexible work hours, and Long Service awardsAnnual health check-upsInsurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parentsValues-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 employmentLet's unleash your full potential at Persistent - /careers/"Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind./"
Job Title
Wireless Core Engineer