Erlang/OTP Developer - Student Helper (M/F) - Zagreb

Posted date:  May 7, 2023

Zagreb, 21, HR


Ericsson Nikola Tesla Group has nearly 3500 employees, majority of whom are from the STEM field. In addition to our ICT solutions in the telecom sector, we provide innovative solutions in health care, transport, state administration, municipal services and multimedia that improve people’s lives and create new value. With more than 70 years of tradition and continuous work on new technologies, we offer the perfect combination of experience and knowledge. Our Research and Development Center is the strongest and biggest telecom R&D center in the region.


Our job 

Our R&D’s Networks Development Control System team is looking for new team members and student helpers willing to develop Middleware using Erlang/OTP executing on Embedded Linux.  

Our Research and Development Center is the strongest and the biggest telecom R&D center in the region. Our organization has been growing very fast for the last couple of years and we need you to help us innovate and bring new technology all over the world. 


Ericsson Radio System is designed to fit all site types and traffic scenarios, even as networks grow in scale and complexity, from 2G, 3G, 4G, and 5G – delivering industry-leading performance on the smallest site footprint with the lowest energy consumption. 

Middleware plays an important role in the system, developed in Erlang/OTP. If you are passionate about developing: 


  • Autointegration (SW download from a remote location via secure ETH/IP network and SW installation) 

  • SW upgrade 

  • Secure Operation & Maintenance (Credentials, Authentication, Authorization) 

  • Configuration using NETCONF/YANG, Database storage 


What is Erlang? 

Erlang is a functional programming language that originated in Ericsson in 1986. Initially, it was used there as a switching language but since then has been released as open-source which has led to wide usage for a variety of different purposes. Many clients, across a range of industries, use it due to its scalability, reliability, and ability to hot-swap. One of the main reasons for using Erlang instead of other functional languages is Erlang's ability to handle concurrency and distributed programming. By concurrency is meant programs that can handle several threads of execution at the same time. For example, modern operating systems allow you to use a word processor, a spreadsheet, a mail client, and a print job all running at the same time. Each processor (CPU) in the system is probably only handling one thread (or job) at a time, but it swaps between the jobs at such a rate that it gives the illusion of running them all at the same time. It is easy to create parallel threads of execution in an Erlang program and to allow these threads to communicate with each other. As a result, it has been an excellent tool for gaming, trading, and big data companies. 

Many companies have built their product in Erlang and yet very few people have even heard about it. 
Amazon - Used Erlang to implement SimpleDB, providing database services as a part of the Amazon Elastic Compute Cloud (EC2). [source
Facebook - Used Erlang to power the backend of its chat service, handling more than 100 million active users  [source]. 
WhatsApp - Used Erlang to run messaging servers, achieving up to 2 million connected users per server  [source]. 
Elixir runs on the Erlang VM giving developers complete access to Erlang's ecosystem. [source


Your job  

What will you do? 

Work in cross-functional and international teams on hardware accelerated networking devices used in 5G mobile networks throughout the globe. The main task is Middleware software development on BEAM (Erlang virtual machine) on a device running on Embedded Linux. 

  • Writing highly structured fault free code with testing capabilities in mind 

  • Documenting your code and reviewing someone else’s code 

  • Work on devices that are made in up to a million quantity 

  • Have an impact on designing worldwide used high availability networking equipment 

  • Cooperate with international teams 

  • Have fun doing it 



We offer

In addition to cutting-edge projects and technology, as well as the opportunity to work in a vibrant international team of experts, we can also point out the following:

  • an opportunity to work in an inspiring working environment where you can develop your career, grow, innovate, and be a part of larger success story
  • annual awards in accordance with the company’s business results and individual contribution
  • incentive bonuses
  • company restaurant and monthly meal allowance
  • sports and cultural sections
  • regular medical check-ups
  • supplementary health insurance
  • flexible working hours
  • covered public transport costs
  • and many more.


Don’t miss a chance to learn from Robert Virding, co-creator of Erlang [source]. Better yet, don’t miss a chance to enter the exciting world of Erlang/OTP development. Join our Croatian team and help us in bringing new 5G technology worldwide! 


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Be where it begins

Our Culture

Welcome to an inclusive, global company where your opportunity to make an impact is endless. Share your most innovative ideas, bring your unique perspective in a speak up environment. With us, you will no longer be dreaming of what the future holds – you will be redefining it at a company where you’re empowered to lead and perform at your very best.

Learning and Development

Being a part of our team means having the flexibility to take your career in many different directions, but it also means leveraging the supportive structure of a big organization, with clear personal and professional development opportunities. 

Benefits and Rewards

We believe that great accomplishments deserve great benefits and transparent rewards. We strive to offer competitive, unbiased, and fair rewards for all our people. We empower you to manage your own time and promote flexible working opportunities, along with family-friendly policies.

Click here to find out more about our benefits.

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