Erlang/OTP Developer
Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Aug 21, 2026.
At Ericsson Nikola Tesla, we don’t just follow technology-we shape it. With nearly 3000 professionals, mostly from STEM fields, we’re a powerhouse of innovation built on over 75 years of experience. As the region’s leading R&D center and a leading exporter of software development services, we blend deep expertise with bold ideas-lighting the way toward a more connected, secure, and intelligent future. Beyond our cutting-edge ICT solutions in the telecom sector, we’re also shaping the future in healthcare, transport, public services, and multimedia. Our innovative technologies make a real difference-enhancing everyday life and delivering meaningful value to communities.
Our R&D’s Networks Development Control System team is seeking developers to work on Middleware using Erlang/OTP on Embedded Linux. Ericsson Radio System supports 2G to 5G networks with high performance and low energy use. Middleware is key, enabling features like remote software upgrades, secure operation, and configuration management.
Location: Zagreb
What is Erlang?
Erlang is a functional programming language developed by Ericsson in 1986, originally for telecom switching. Now open-source, it’s widely used for building scalable, reliable, and concurrent systems. Erlang excels at handling multiple threads of execution simultaneously, making it ideal for distributed applications.
Many major companies rely on Erlang:
- Amazon uses it for SimpleDB in EC2. [source]
- Facebook powers its chat backend with Erlang, supporting 100+ million active users. [source]
- WhatsApp runs messaging servers handling millions of users per server. [source]
Elixir, a modern language, also runs on the Erlang VM, leveraging its robust ecosystem. [ source]
In this role, you’ll work on:
- Remote software download and installation (Autointegration)
- Software upgrades
- Secure operation & maintenance (credentials, authentication, authorization)
- Configuration via NETCONF/YANG and database management
What you’ll be doing:
- Develop Middleware software on the BEAM (Erlang VM) running on Embedded Linux
- Work on cutting-edge 5G networking devices used around the world
- Write clean, reliable, and testable code with quality in mind
- Document your work and learn through code reviews with your teammates
- Contribute to products built in large volumes-up to a million units
- Help design high-availability systems used globally
- Collaborate with experienced engineers in international teams
- Learn, grow, and have fun doing meaningful work
We are looking for:
- Technical university students or graduates with a background in STEM.
- A desire and readiness for learning and research
- Openness in communication, motivation for collaboration and teamwork
- Good knowledge of the English language
We offer:
You won’t just work on cutting-edge technology-you’ll be part of a team that values your ideas, supports your growth, and makes sure you enjoy the journey along the way. Here’s what you can look forward to:
- Smooth start - a company laptop, and a mobile phone with great plan.
- Flexibility - hybrid work and flexible hours that fit your lifestyle.
- Career growth - level up with mentoring, scholarships, and continuous learning.
- Performance rewards - annual awards, performance-based bonuses, innovation incentives, and a holiday allowance.
- Commute covered - full reimbursement for public transportation.
- Beyond basic health - regular medical check-ups, supplementary and additionalhealth insurance, and well-being programs.
- Family support - 2000 EUR newborn gift, kindergarten subsidy, and extra days off for family needs.
- Referral reward - earn a bonus for bringing great talent.
- Meal perks - 100 EUR monthly meal allowance and access to our on-site restaurant in Zagreb.
- Life beyond work - join sports, cultural, and community activities.
- Active lifestyle - stay active with a partially subsidized Multisport card and access to the ENT Health Hub, our on-site fitness space with exercise equipment in Zagreb.
- Time to recharge - enjoy compensatory time off during the Christmas holidays.
- And much more.
Please submit your application, including your CV, written in either Croatian or English. Any personal projects (on GitHub or similar) are also welcome.
Technical universities students are also welcome to apply.
Croatian citizenship or a work permit for Croatia is mandatory.
Candidates will be evaluated and contacted after passing the initial screening.
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