**This is iPECS position/ Location is Gasan
About this opportunity:
We are seeking a talented **Call Processing Engineer** for our iPECS Cloud Telephony Platform, a cutting-edge IP Telephony system powering enterprise-grade unified communications. In this role, you will architect and implement sophisticated call signaling and media processing features in a scalable, multi-tenant cloud environment, ensuring seamless, high-availability voice services for global customers.
Key Responsibilities
• Design and develop core call processing functionalities leveraging SIP protocols within the iPECS Cloud platform.
• Conduct in-depth analysis of network communications, including packet captures and protocol traces, to optimize signaling and media flows.
• Evaluate existing software architecture to design and deploy advanced call features, such as call transfers, conferencing, queuing, and multi-party sessions.
• Provide expert technical support by diagnosing and resolving customer issues through log analysis, root-cause identification, and rapid solution deployment.
• Integrate with external ecosystems via RESTful APIs, WebSockets, and event-driven services (e.g., UC platforms, CRM, recording, and billing systems).
• Enhance system performance through refactoring, optimization, and rigorous quality assurance at production scale.
Required Qualifications
• Bachelor's degree or higher in Computer Science, Electrical/Electronic Engineering, Telecommunications, or a related field.
• Entry-level (new graduate) or 2-3 years of hands-on experience in relevant domains, such as VoIP or network software development.
• Proficiency in C or C++ for high-performance, server-side and real-time programming.
• Proven experience developing and debugging in Linux/Unix environments.
• Solid understanding of networking fundamentals, including TCP/IP, UDP, NAT traversal, and QoS mechanisms.
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: Korea (the Republic of) (KR) || Seoul
Req ID: 780558
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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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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.
