Senior L1 Developer for 5G6G Simulator

Ericsson; Kraków; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Annual bonus

Private medical care

Life insurance

Mental Help Line

Pluxee cafeteria benefits

3G/4G/5G/6G projects

International training

Job summary

Ericsson Kraków is seeking a Layer 1 Developer to help prepare a powerful UE Simulator for 5G/6G and form the core team for its future development. The role sits in the Simulation Services (SIMS) unit, delivering simulators for product verification instead of real devices.

The candidate will join an agile team, configure hardware-backed simulators and collaborate across analysis, design and implementation in small increments to enable fast feedback.

Qualifications

• Hands-on experience configuring and testing software on hardware.
• Familiarity with LTE/5G physical layer specs and network standards.
• Strong multi-core / multithreaded programming knowledge.
• Experience with embedded systems and hardware interaction.
• Excellent English speaking and writing skills.

Responsibilities

• Contribute to Layer 1 development of a UE Simulator as part of an agile team.
• Configure and test simulators on hardware, ensuring reliability and accuracy.
• Support internal Ericsson users with a key product for 5G/6G.
• Engage in analysis, system design, pre-development and small incremental implementations.

Skills

C

Golang

Python

Java

Education

MSc or BSc in Telecommunications, Electronics or Computer Science

Tools

GitLab

Git

Jenkins

Job description

About This Opportunity

We are now looking for an engaged Layer 1 Developer to join our team based in Poland. The team will work on how to prepare for the development of a powerful UE Simulator meeting the needs of 5G/6G, and will later become the core team for the actual development of the 5G/6G UE Simulator. The Simulation Services (SIMS) unit is responsible for providing Simulators to product development within Business Area Networks. These Simulators are used in product verification instead of real mobile phones and real core networks.

Join our Team

About This Opportunity

We are now looking for an engaged Layer 1 Developer to join our team based in Poland. The team will work on how to prepare for the development of a powerful UE Simulator meeting the needs of 5G/6G, and will later become the core team for the actual development of the 5G/6G UE Simulator. The Simulation Services (SIMS) unit is responsible for providing Simulators to product development within Business Area Networks. These Simulators are used in product verification instead of real mobile phones and real core networks.

What You Will Do

• Be part of an agile team that contributes to Layer 1 development of a UE Simulator.
• Take part in configuring and testing our Simulators on the underlying hardware, making sure they behave correctly and reliably.
• Work in an exciting technical area, supporting Ericsson internal users with an important product for 5G/6G.
• Get the opportunity to work with everything needed in a team: analysis, system design, pre-development and implementation in small increments, ensuring short feedback loops.

You will bring

• Strong software engineering skills with the ability to write high-quality code (must have: C or Golang; nice to have: Python and Java).
• Familiarity with the standards and protocols used in LTE or 5G networks, including the physical layer (Layer 1) specifications.
• Knowledge of RF propagation, modulation schemes and signal processing.
• Knowledge of embedded systems and how software interacts with hardware components, ideally with hands‑on experience configuring and testing software on hardware.
• Knowledge of multi‑core / multithreading processor programming and parallel processing, to simulate multiple data link connections efficiently.
• Readiness to explore new opportunities, and to continuously learn and improve together with the team, with a genuine enjoyment of coding.
• MSc or BSc level in Telecommunications, Electronics or Computer Science.
• Excellent speaking and writing skills in English.

Nice to have

Given our current Platform Engineering activities, including an ongoing migration to GitLab, a more DevOps-oriented profile is a strong plus. Experience with the following will be valued:

• Hands‑on experience designing, building and maintaining CI/CD pipelines.
• Solid knowledge of Git and GitLab, ideally in a CI/CD context.
• Experience with Jenkins or another CI/CD pipeline orchestrator.
• Familiarity with event‑driven CI/CD architectures.

We work in a hybrid model, minimum 3 days from the office.

What 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 the employee and their family (Medicover).
• Life insurance.
• Mental Help Line.
• Cafeteria system on the Pluxee platform: co-financing of MultiSport or OK System card, lunch cards, and others.
• Sports and integration activities (e.g. football, yoga, sailing 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.

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