Integration Engineer VoLTE-Control-PD

Ericsson GmbH; Rijen; On-site; EUR 65,000 - 90,000; Full time

Job summary

Ericsson GmbH is seeking a VoLTE / Control / IMS Integration Engineer to help integrate, test and troubleshoot voice and core network solutions in real customer environments.

You’ll gain hands-on exposure to VoLTE, IMS, 4G/5G and cloud technologies, collaborating with experienced engineers and customers to understand networks and resolve issues. Training is provided for junior engineers and growth opportunities exist for more senior staff.

Qualifications

• Bachelor’s or Master’s degree in Telecommunications, Computer Science, Electrical Engineering or related field.
• Interest in mobile networks and technologies such as VoLTE, IMS, 4G/5G, IP networking or cloud.

Responsibilities

• Assist in integrating, testing and troubleshooting VoLTE, IMS and 4G/5G Core network solutions in real customer environments.
• Learn how different systems connect and how voice and data travel through a mobile network.
• Investigate issues using logs, traces, alarms, KPIs and test results to identify root causes.
• Support testing of services like VoLTE calls, IMS registration, SMS over IMS and emergency calling.
• Assist configuring, upgrading, migrating and expanding network solutions while keeping services up.
• Collaborate with engineers, solution architects, project managers and customers to deliver projects.
• Document work and share learnings with the team.
• Grow knowledge of cloud-native telecom and 5G Standalone technologies.

Skills

VoLTE

IMS

4G/5G Core

SIP

Diameter

IP Networking

Linux

DNS/ENUM

HTTP/2

Cloud Technologies

Education

Bachelor’s or Master’s in Telecommunications, CS or EE

Tools

SIP

Diameter

Linux

DNS/ENUM

HTTP/2

Job description

Role overview

Want to build your career in telecom, mobile networks and 5G while working with technology used by millions of people every day?

As a VoLTE / Control / IMS Integration Engineer, you’ll help integrate, test and troubleshoot Ericsson’s voice and core network solutions in real customer environments.

You’ll get hands‑on exposure to VoLTE, IMS, 4G/5G and cloud technologies, working alongside experienced engineers and customers to understand how networks work, solve technical challenges and keep services running smoothly.

We’re hiring across different experience levels (JS2–JS5), so you don’t need to be an expert in everything from day one. For junior engineers, we’re looking for strong technical foundations, curiosity and a willingness to learn. If you’re more experienced, you’ll have the opportunity to take greater ownership of technical delivery, problem‑solving and customer activities.

What you will do

You’ll work with Ericsson technology that helps keep people connected — supporting voice and mobile network services used every day.

Depending on your experience level, you’ll learn from experienced engineers while gradually taking more ownership of technical activities and customer projects.

• Help integrate, test and troubleshoot VoLTE, IMS and 4G/5G Core network solutions in real customer environments.


• Work hands‑on with network technologies, learning how different systems connect and how voice and data travel through a mobile network.


• Investigate technical issues using logs, traces, alarms, KPIs and test results and work with the team to find the root cause.


• Support testing of services such as VoLTE calls, IMS registration, SMS over IMS, emergency calling and other mobile voice features.


• Help configure, upgrade, migrate and expand network solutions while making sure services continue running smoothly.


• Work with technologies and protocols such as SIP, Diameter, IP networking, Linux, DNS/ENUM and HTTP/2, depending on your experience.


• Collaborate with engineers, solution architects, project managers, customers and other technical teams to solve problems and deliver projects successfully.


• Document your work and share what you learn with the wider team.


• Build your knowledge of cloud‑native telecom and 5G Standalone (5G SA) technologies as our networks continue to evolve.


• As your experience grows, take greater ownership of technical activities, customer communication, planning and solution design.

What you bring

You don’t need to know everything on day one. We’re looking for people who are curious, enjoy solving technical problems and want to keep learning.

• A Bachelor’s or Master’s degree in Telecommunications, Computer Science, Electrical Engineering or a related technical field — or equivalent practical experience.


• An interest in mobile networks and technologies such as VoLTE, IMS, 4G/5G, IP networking or cloud.


• Some hands‑on technical exposure through work, an internship, university projects, labs or personal projects. More experienced candidates should bring relevant telecom integration, operations or support experience.


• Basic knowledge of Linux, networking, SIP, Diameter or IMS/VoLTE is a plus — we don’t expect junior candidates to be experts.


• A logical approach to troubleshooting: you enjoy understanding why something isn’t working and figuring out how to fix it.


• Curiosity and confidence to ask questions when you don’t know something.


• Good communication skills and the ability to work with different teams and customers.


• A collaborative mindset - you’re happy to learn from others and share what you know.


• Fluent written and spoken English.


• Willingness to work regularly from the customer testing facility approximately 30 km from Maastricht, as hands‑on customer‑site testing is an important part of this role.

Location: Maastricht

VISA sponsorship not available

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.

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: Netherlands (NL) || Maastricht