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Baseband Software Senior Tester

Ericsson Krakow, Lesser Poland Voivodeship, Poland

hybridfull-time
Posted Jan 6, 2026

Role & seniority: Baseband Software Tester, part of PEU RAN Performance (BA Networks); entry to mid-level testing role within a senior team.

Stack/tools: 5G NR baseband/software testing; test equipment (UE simulators, real UE, protocol analyzers, signal generators/analyzers, radio channel simulators); multithreaded/multicore system testing; verification, CI/test automation; knowledge of NR architecture (UPC UL/DL, ULPHY, DLPHY, MAC, L3).

Top 3 responsibilities

  • Write inventive, high-quality test code for verification and continuous integration.

  • Maintain/improve L1/L2 Baseband test coverage and ensure legacy coverage in test loops.

  • Drive systemization of 5G features, assess performance, and update feature documentation; ensure appropriate test environments and tools are available.

Must-have skills

  • Interest in and motivation to learn software test and integration.

  • Technical degree (BSc; MSc preferred).

  • NR System design, NR Node verification, and NR RAN troubleshooting knowledge.

  • Experience with NR baseband architecture (UPC/L1-L3) and test tools for radio products (UE simulators, analyzers, signal generators, channel simulators).

  • Understanding of NR RBS at block/subsystem/node levels and familiarity with 3GPP specifications.

Nice-to-haves

  • Experience with test equipment management and lab/test environments.

  • Familiarity with multi-threaded/multi-core systems, documentation drafting, and demo instruction writing.

  • Aptitude for

Full Description

Join our Team

About this opportunity

  • 5G and Cloud RAN are already a reality, and Ericsson is the leader in bringing it to the market. There has never been a better time for you to make your mark. A large group of skilled developers are working energetically to convert 5G and Cloud RAN plans into reality. We are growing and looking for more talent.

PEU RAN Performance PEG3 is part of Integrated RAN in BA Networks and responsible for driving Baseband software product development end to end by having competence and capability to take on full feature responsibility.

As a Baseband Software Tester, you will work in a team that has the responsibility for developing 5G Baseband and Cloud RAN software products. That means testing and integrating advanced signal-processing functions and algorithms in a cycle and memory constrained real-time environment. The test environment is both simulated and true e2e including Core Network, Radio Access nodes and real or simulated mobile phones.

You will experience a truly collaborative and supportive environment, both in terms of tools and colleagues. And you will have lots of fun. PEU RAN Performance is located mainly on different sites in Sweden, Canada, China, US and Poland. This position is situated in Kraków, Poland.

What you will do

  • Write inventive, high quality, clean, optimized test code for use in verification and continuous integration

  • Maintain and improve the quality of L1 and L2 part of the Baseband product by securing legacy coverage in test loops

  • Drive systemization of 5G features as well as follow-up actual performance

  • Break down features and create feature anatomies, determine impact on system documentation and update it

  • Write demo instructions and customer documentation, systemization of multithreaded and multicore systems

  • Drive continuous improvements of products, environments, and processes

  • Make sure that the right test environment is available in time, both the actual test platform in the lab and the test environment with tools and automation frameworks

The skills you bring

  • Interest in and a drive to learn software test and integration

  • BSc level (MSc preferred) in a technical field or the equivalent level of knowledge

  • Knowledge in New Radio (NR) System design, NR Node verification and NR RAN troubleshooting

  • Knowledge in test equipment management

  • Knowledge in NR base band Architecture and functionality (e.g. UPC UL, UPC DL, ULPHY, DLPHY, MAC, L3)

  • Knowledge in test tools used for radio network products (e.g. UE Simulators and Real UE testing, protocol analyzers, signal generators and analyzers, radio channel simulators )

  • Knowledge of NR RBS on block, subsystem and node level

  • Understanding of relevant 3GPP specification

We work in a hybrid model - 3 days from the office weekly.

What do we offer

  • Annual bonus depending on the achievement of the company's goals and results

  • Possibility to take advantage of the reduction of tax-deductible costs for creative work

  • Financial awards and distinctions

  • Private medical care for employee and their family (Medicover)

  • Life insurance

  • Mental Help Line

  • Cafeteria system Pluxee platform: co-financing MultiSport or OK System card, lunch cards, and others

  • Sports and integration activities (e.g. Football, Joga, raising team, climbing club)

  • Company support (loans and grants)

  • Possibility to participate in 3G / 4G / 5G... 6G technology projects

  • Opportunity to participate in technical and interpersonal training conducted by international trainers

  • Access to recognized learning platforms (Pluralsight, Skillsoft, Coursera)

  • Opportunity to work in an international environment, also outside Poland

  • Why join Ericsson?

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

What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like. 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 Employer. learn more.

Primary country and city: Poland (PL) || Krakow

Req ID: 772892

Software TestingIntegrationNew Radio System DesignNR Node VerificationRAN TroubleshootingTest Equipment ManagementNR Baseband ArchitectureTest ToolsProtocol AnalyzersSignal GeneratorsRadio Channel Simulators3GPP Specificationsmulti-location

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