5G/6G Software Developer

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. 

We’re looking for a passionate 5G/6G Software Developer to help build the next generation of real-time, low-latency network solutions. You’ll be working on the key software that powers 5G standalone networks, designed from the ground up for high speed, massive connectivity, and ultra-low latency. 

Our systems enable 5G advanced capabilities like L4S (Low Latency, Low Loss, Scalable Throughput), which are critical for emerging use cases such as: 

• Remote driving with sub-10ms round-trip latency, enabling precise vehicle control from miles away 
• Cloud gaming with console-grade responsiveness, even under network congestion 
• XR applications with smooth frame delivery and minimal motion sickness 
• Real-time video calling that adapts dynamically to network conditions for uninterrupted communication

These same low-latency capabilities are also being applied to mission-critical communication systems, supporting secure messaging, emergency alerts, and real-time coordination for field teams and first responders. 

You’ll contribute to software that intelligently manages device mobility, optimizes radio parameters, and exposes real-time network metrics to applications, paving the way for differentiated service tiers and network slicing. 

Why it matters:

At 100 km/h, a human reaction takes ~30 meters. With 1ms latency, a remote system can respond in under 3 cm. That’s the kind of precision we’re enabling, where milliseconds define safety, immersion, and performance. 

From architecture to deployment, you’ll be part of a team delivering software used by hundreds of millions of users globally, designed to meet the demands of tomorrow’s connected world.

Location: Zagreb, Osijek 

What you’ll be doing: 

• Participate in pre-design activities 
• Document and communicate technical solutions 
• Design and implement features using C, C++, Git, and Gerrit 
• Develop and execute tests using Python, Erlang and gMock 
• Validate features through customer activities and feedback 
• Analyze and resolve bugs based on real-world usage 

We are looking for:   

• Bachelor's or master's degree in computer science, electrical engineering, or related field. 
• Passion for software development and proficiency in any programming language. 
• Strong analytical and problem-solving skills 
• Interest in working on large-scale, performance-critical system 

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. 

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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