About this opportunity:
We are seeking a highly motivated and skilled RAN & Core Performance Engineer to join our telecom network team. The candidate will be responsible for Performance KPI's, assurance, troubleshooting, and optimization of both Radio Access Networks and Core Network (CS/PS/VAS) components. This role requires in-depth technical knowledge of mobile technologies (2G/3G/4G/5G/ NBIoT), Core, network architecture, and protocols, etc.
What you will do:• Network performance management of 2G/3G/4G/5G/ NBIoT RAN.• Perform KPI monitoring, root cause analysis, and performance tuning of radio networks.• Collaborate with RF engineers for coverage and capacity planning.• Troubleshoot site-level and cluster-level RAN issues (call drops, interference, handover failures).• Support in Pre-post analysis for any new site integration, software upgrades, and feature implementation.• Network performance management of Core domain (CS/PS/VAS), EPC/5GC components: MME, SGW, PGW, AMF, SMF, etc.• KPI analysis and troubleshooting.• Troubleshoot signalling and bearer path issues using protocols like GTP, Diameter, SCTP, SIP.• Analyze call flows, CDRs, and trace logs for issue resolution.• Support in Pre-post analysis for any new site integration, software upgrades, and feature implementation.• Work with vendors for core software upgrades and capacity expansion.
The skills you bring:• Bachelor's degree in Electronics/Telecommunications/Computer Science or related field.• Strong understanding of RAN and Core (EPC, 5GC, NG-RAN, etc.).• Need 9 to 12 years of experience.• Experience with tools like Wireshark, TEMS, NetAct, ENM, OSS platforms, Kalix, Netcool, NGPM, Service now, SIGOS, EEA.• Knowledge of telecom protocols: LTE/NR, GTP, S1AP, X2AP, Diameter, NAS, NGAP.• Familiarity with network virtualization (NFV), SDN, and cloud-native core (preferred).• Good analytical, problem-solving, and communication skills.• Should be able to work in night Shift, On-call support rotation (as per project requirements)
What the Team is Saying
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What We Do
Ericsson builds the digital connectivity the world relies on. Our technology underpins the mobile networks, platforms, and systems that billions of people, businesses, and societies depend on every day. We are a global leader in communications technology, delivering mobile network infrastructure, cloud software, and wireless connectivity solutions for service providers and enterprises worldwide. Our networks support connectivity across 180+ countries, helping power everyday communication as well as critical digital services at global scale. Connectivity has evolved far beyond consumer mobile use. Today, nearly 80% of the world’s population accesses the internet via mobile networks, and Ericsson is helping shape what comes next. We are advancing 5G and 5G Advanced, developing network APIs that open connectivity to the global developer ecosystem, and applying automation and AI to make networks more intelligent, efficient, and resilient. Ericsson was the first company to launch live 5G networks on five continents, and our 5G platform is now commercially live in 150+ networks across 60+ countries. We also support more than 36,000 enterprise customers, enabling secure, high-performance connectivity for industries such as manufacturing, aviation, logistics, utilities, and public safety, where reliability and performance are mission critical. Innovation is central to how we work. Ericsson has approximately 28,000 employees in research and development, backed by one of the strongest intellectual property portfolios in the industry with 60,000+ granted patents. Our engineers, researchers, and technologists work across 100+ global R&D sites, helping define how networks evolve and how digital infrastructure is built for the long term. As the world moves toward a mobile-first, AI-powered, and cloud-driven future, connectivity becomes the foundation for digital transformation across every industry. Ericsson is building that foundation, shaping the future of digital connectivity through technology that operates at global scale and supports real-world impact, today and for what comes next.
Why Work With Us
Ericsson is a place for people who want to work on technology that powers everyday life. You’ll contribute to large-scale systems used every day, tackle complex challenges in live environments, and keep developing your skills and career in your own vision.
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