Junior SW Developer

Ericsson

Location not specified

Posted: February 9, 2026

Job Description

Join our Team

About this opportunity

We are looking for Junior Software developers in the area of 5G Core Network, with passion for building new functionalities related with 5G mobile data processing (especially, in the programming of open platform, real time and high-availability systems).

What you will do

You will work in a multi-functional team in the development of new functionalities for 5G User Plane.

Participate the full life-span of the software feature: from early phases (analyzing the solution and setting requirements), development phase (coding and testing), and final deployment on live network (supporting customer teams).

Be part of a multinational organization, with teams distributed in Spain, Sweden, and China.

You will bring

A bachelor’s or master’s degree in computer science, telecommunication engineering or related field.

Willing to or being already proficient in programming of open-platform, real-time and high-available systems, as well as scripting.

Programming in C, and at least one scripting language (i.e. python, shell/bash) on UNIX/Linux is required.

Capacity to investigate and debug complex issues. Including performance tuning experience, troubleshooting, core dump analysis, etc.

Cloud native software stacks and execution environments. Containers (i.e. Dockers).

Good written and spoken English, confident working in international environments.

Competences of extra value:

Knowledge in operating system architectures and capacity to model scalable designs and solutions.

Knowledge in TCP/IP Networking, and evolution transport protocols (like QUIC), data networks and IP-based applications (HTTP, HTTPS, ...), Routing and Signaling.

Knowledge as a Linux user and network administrator.

Experience in configuration of network equipment.

Knowledge in Mobile network architecture 4G/5G. Interfaces, protocols, functions

C++ and/or Golang.

We are seeking a talented candidate for our team willing to work in a flexible environment combining both working from home and in-office presence in Madrid (50%).

Why join Ericsson?

At Ericsson, you´ll have an outstanding opportunity. The chance to use your skills and creativity to push the boundaries of what´s possible. To build never seen before solutions 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.

Click here to find all you need to know about what our typical hiring process looks like.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

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 and Affirmative Action employer, learn more.

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