About This Opportunity
We are seeking a talented CS CORE Performance Engineer at the Engineer/Senior Engineer level to join our performance optimization team in Noida, India. Reporting to the Performance Manager, you will play a critical role in driving performance improvements within our managed services operations, particularly in telecom core network environments. This position requires a degree in Electronics and Telecommunication Engineering and offers the opportunity to work with cutting-edge telecom infrastructure.
What You Will Do• Execute performance improvement initiatives and delivery activities within well-defined system support guidelines and processes (MSTOP)• Design, configure, and troubleshoot core network elements from leading vendors (Ericsson, Nokia, Huawei) including MSC, GMSC, MGW, DRA, SBC, and RAN nodes• Analyze and optimize critical performance KPIs such as PSR, SCR, LUSR, CSFB, SRVCC, SMS MT/MO, ASR, TAU, and capacity metrics• Evaluate capacity requirements and provide recommendations for network optimization• Support VoLTE/IMS and VoWiFi configurations on MSS nodes• Lead technical discussions focused on performance enhancement and provide actionable recommendations• Ensure adherence to correct work methodologies to prevent network outages• Collaborate with NPI, project, and circle planning teams to align performance objectives
The Skills You Bring• 4-8+ years of hands-on experience in telecom core networks, particularly 2G/VoWiFi domains• Proven expertise with core nodes and protocols (GSM, WCDMA, LTE, VoWiFi)• In-depth knowledge of at least 2 major vendors (Ericsson, Nokia, Huawei• Strong understanding of GSM/LTE fundamentals and 3GPP standards• Expertise in SS7, IP signaling, SIP, Diameter, TCP/UDP protocols, and SIGTRAN• Proficiency in call flow analysis and core network interface knowledge• Advanced capability in performance KPI analysis and service awareness• ICR configuration and troubleshooting experience
Why join Ericsson?At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before to some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.
What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: India (IN) || Noida
Req ID: 788237
Skills Required
- Degree in Electronics and Telecommunication Engineering
- 4-8+ years hands-on experience in telecom core networks (2G/VoWiFi domains)
- Proven expertise with core nodes and protocols (GSM, WCDMA, LTE, VoWiFi)
- In-depth knowledge of at least two major vendors (Ericsson, Nokia, Huawei)
- Strong understanding of GSM/LTE fundamentals and 3GPP standards
- Expertise in SS7, IP signaling, SIP, Diameter, TCP/UDP, and SIGTRAN
- Call flow analysis and core network interface knowledge
- Advanced capability in performance KPI analysis and service awareness (PSR, SCR, ASR, TAU, capacity metrics)
- Experience designing, configuring, and troubleshooting core network elements (MSC, GMSC, MGW, DRA, SBC, RAN nodes)
- Support and configuration experience for VoLTE/IMS and VoWiFi on MSS nodes
- ICR configuration and troubleshooting experience
- Adherence to system support guidelines and processes (MSTOP) to prevent outages
What the Team is Saying
.png)
.png)
Ericsson Compensation & Benefits Highlights
-
Healthcare Strength — Healthcare coverage includes employer‑verified medical, dental, and vision plans, along with HSAs/FSAs and EAP/mental‑health support. Wellbeing initiatives are highlighted as part of Life at Ericsson.
-
Retirement Support — Retirement programs include a 401(k) with company matching that is employer‑verified, with mentions of match levels varying by time and team and pension support in some regions. This is frequently cited as a solid pillar of the package.
-
Parental & Family Support — Paid parental leave is described as competitive in many U.S. postings, with examples up to 16 weeks maternity and 6 weeks parental/adoption at 100% pay. Family‑friendly policies and return‑to‑work support are also called out.
Ericsson Insights
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.
Gallery
Ericsson Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
Ericsson adopts a hybrid work model globally because we know balance matters. Sometimes things are better in real life. Other times we can be more productive at home. Our hybrid approach gives you the best of both worlds.
