Ericsson Careers

Senior SW Developer at the Erlang/OTP team

Stockholm, Sweden
Information Technology

English (US)

Job Description

Date: Nov 8, 2018

Why is Ericsson a good place to work
Ericsson enables communications service providers to capture the full value of connectivity. The company’s portfolio spans Networks, Digital Services, Managed Services, and Emerging Business and is designed to help our customers go digital, increase efficiency, find new revenue streams, and create new user experiences. Ericsson’s investments in innovation have delivered the benefits of telephony and mobile broadband to billions of people around the world ensuring our solutions – and our customers – are at the forefront of innovation.   We support networks that connect more than 2.5 billion subscribers. With close to 100,000 employees and customers in 180 countries, we combine global scale with technology and service leadership.  40 percent of the world’s mobile traffic is carried over an Ericsson network.  And, our Technology for Good and Connect to Learn programs include creating technology that makes it easier to save lives, feed societies, bring technology to emerging markets and connectivity to remote areas, and grow businesses and prosperity.


At Ericsson, we give our employees the freedom to think big and navigate their career, on a global scale.  We create technology that helps others, from helping people enjoy their favourite content to helping people recover from natural disasters by enabling better communications between rescue workers. Your ideas and innovations can turn into achievements that impact society and change the world, creating new connections, new possibilities, and new capabilities.  We find that Ericsson is at its best when we bring together the diverse skills of our people. Working across business areas, across cultures, across geographical borders, across technical disciplines. More often than not, across ground-breaking solutions. Next generation technology can be staggeringly complex. But the simpler it is to use; the more people benefit from it. Join us and help build technology that makes it simple to connect with information, business, societies, and each other.


Senior SW Developer at the Erlang/OTP team
The Erlang/OTP team consists today of 16 developers.
We are developing Erlang/OTP, a development and runtime environment for Erlang which supports efficient development of reliable, concurrent highly scalable control systems.

Erlang/OTP is used in several Ericsson products such as:
• Radio Base Station (multi standard including 5G)
• SGSN/MME (mobile packet data for 2G, 3G, 4G and 5G).
• SBG Session Border Gateway (an IMS node)
• ... many more uses
As Erlang/OTP is Open Source (with Ericsson as the main developer) it is also used with great success outside Ericsson.
Some well known and successful users of Erlang/OTP in their products or services are:
• Whatsapp (mobile messaging)
• Klarna (Payment solutions for Web-shops)
• Bet365 (on-line betting)
• ... and there are many more


Erlang/OTP is based on the programming language Erlang and can be run on a number of operating systems such as Linux, Windows, Solaris, Mac OSx , FreeBSD etc.
Erlang is developed by Ericsson and is a functional programming language very well suited for robust systems with many parallel communicating processes, which is typical for telecom applications and control systems in general.
The built in support for concurrency and multi-core scalability is well acknowledged and used as inspiration for other languages and frameworks.


The development within the Erlang/OTP team is done in small teams with fast decisions and minimal administrative overhead.
All developers take part in the complete development chain from system work, implementation, documentation, integration and test. The small teams establish a creative environment where own initiatives are encouraged.
We are using GIT for the development with Linux as the main platform to support.
In addition to Erlang we also use quite a lot of C and a small amount of other languages.


Link to our official git repo at Github:
Link to the Erlang/OTP web-site:


Responsibilities and tasks
Now we are looking for a SW developer which can take one of the following roles (or a combination of them):
- Development of new sub-components within Erlang/OTP mostly programmed in Erlang.
- Development and maintenance of the Erlang Virtual Machine (advanced programming in C).
- Development and maintenance of existing sub components mostly written in Erlang such as (HA functions, Protocols, Security (TLS, SSH) , Compilers, ...
- Administration and further development of our framework for daily build and test


The person we are looking for fulfills several of the following criteria:
- Competence corresponding to Masters degree in Computer Science or similar (we value competence over formal examina).
- Thinks that programming is really fun and not just a job.
- Experienced in Erlang and C programming.
- Experienced in other functional programming languages.
- Experience with Git
- Have a good sense for "ready in time and with quality".
- Competence in test and integration and test automation
- Fluent English is required, Swedish will be a plus.


The selection and interview process is ongoing, so send your application in English as soon as it is ready. If you have specific questions you are welcome to email recruiter at


Location: Kista, Sweden


Last day to apply is the 22nd of November, 2018.


We welcome the opportunity to meet you!



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Primary country and city: Sweden (SE) || || Stockholm || IT

Req ID: 258250