System Engineers for Telecom (L1 and L2)

We look for system focused engineers to work with early-phase studies and simulation work for 5G NR feature evolution.

Role Purpose

System design, feature development, and verification teams, with a focus on simulation-driven analysis and 3GPP-aligned architecture exploration.

The role supports for Layer 1 (PHY) and for Layer 2 (MAC/RLC/PDCP).

Key Responsibilities

• Lead and support technical studies during feature pre-development.
• Execute simulation-based evaluations (link-level, scheduler behaviour, accelerator feasibility).
• Provide architectural input and early design feedback to development teams.
• Align technical work with 3GPP standards and internal Ericsson architecture (e.g., MSRBS, GPP).
• Collaborate cross-functionally with system, software, and verification teams.

General Competence Requirements

• Solid grasp of the 5G NR protocol stack (based on 3GPP).
• Familiarity with simulation environments and analytical tools.
• Capability to work independently, document findings, and communicate effectively.
• Willingness and ability to ramp up on Ericsson-specific platforms.

Layer 2 (L2) Focused Candidate

Must-Have Skills:

• Deep understanding of:
• MAC scheduling, multiplexing
• Logical-to-transport channel mapping
• Buffer Status Reports (BSR), Scheduling Requests (SR)
• RLC modes: TM, UM, AM
• Knowledge of:
• User Plance Control (UPC)
• Radio Resource Management (RRM)

Nice-to-Have:

• PDCP knowledge (ciphering, header compression)
• Experience with simulation or log analysis tools
• Python/Matlab/C++ scripting for automation or modelling

Layer 1 (L1) Focused Candidate

Must-Have Skills:

• Strong experience in:
• Link-level simulations (e.g., Falcon)
• 5G PHY protocol stack: UL/DL procedures, HARQ, beamforming
• Waveforms and signal design (OFDM, SC-FDMA)
• Channel coding (LDPC, Polar)
• Synchronization signals (PSS/SSS, DMRS, CSI-RS)
• Slot/frame structure understanding (38.211/213)

Nice-to-Have:

• Experience integrating simulations with HW testbeds
• Understanding of FAPI/nFAPI or O-RAN PHY interface specs

Ramp-Up & Support

• Prior experience with Ericsson internal platforms is not required.
• Onboarding and mentorship will be provided to help candidates ramp up effectively on Ericsson tools and workflows.