5G RAN L1/PHY Engineer Position

• *Position:**

5G RAN L1/PHY Engineer
• *Type of Contract:**

Full-time, Permanent
• *Start Date:**

Immediate
• *Location:**

United States
• *Eligibility:**

Candidates must be based in the United States and authorized to work in the United States.
• *Job Description:**

The OAI L1 5G stack is a fully open-source implementation of the 5G/NR physical layer (3GPP 38.2xx, Rel. 15), written in C and running on generic Intel/AMD-based and ARM-based CPUs.

It supports both gNB and UE implementations, covering:
• All FR1 bandwidths with 256-QAM
• SISO and up to 4-layer MIMO in both downlink and uplink
• 100 MHz and 200 MHz bandwidths in FR2

The stack includes all control and transport channels required for 5G standalone (SA) operation, along with SRS and CSI-RS support for advanced MIMO functionalities, including Massive MIMO.

The full list of supported features can be found here: https://gitlab.eurecom.fr/oai/openairinterface5g/-/blob/develop/doc/FEATURE_SET.md#gnb-phy

You will contribute to the improvement of the 5G L1/PHY stack of OAI. Specifically, you will start working on the L1/PHY of the gNB:
• Support with the implementation of digital beamforming in the downlink
• Support with the integration of the OSC xRAN library into OAI and testing of the 7.2 interface
• Support of implementation activities towards Cat-B O-RU handling in the OAI DU

We are seeking a telecom software development engineer with strong expertise in C/C++. The applicant should have a deep understanding of 3GPP 5G/NR L1 operations as well as O-RAN Open Fronthaul Interface specifications. This includes hands-on experience implementing 3GPP specifications in code (L1 required, L2/L3 as a plus). Prior experience with 5G/NR L1 implementations or the MATLAB toolbox is a strong advantage. Contributions to the UE L1/PHY stack may be considered as a follow-up.

GitLab link: https://gitlab.eurecom.fr/oai/openairinterface5g/
• *Required / Mandatory Skills
• Very strong C/C++ skills
• Very good knowledge of 3GPP 5G/NR L1 operation and O-RAN Open Fronthaul Interface specifications
• Solid experience in RAN software development (L1 required, L2/L3 is a plus) and use of SIMD intrinsics
• Very good understanding of Git SCM
• Experience with 5G/NR L1 implementations or MATLAB is a plus
• *Qualifications
• Work experience of a minimum of 3 years
• Master’s degree in Computer Science, Telecommunications, or equivalent
• Strong analytical and problem-solving skills
• Good interpersonal and teamwork skills to collaborate and work well with others
• *Salary**

Commensurate with experience and skill set
• *Why Join Us?
• Contribute to one of the most impactful open-source communities in cellular networks
• Work with cutting-edge technologies in 5G and 6G
• Gain international exposure through collaboration with industry leaders and open networking communities
• Be part of an organization that values autonomy, fosters mastery, and is driven by a strong sense of purpose
• *Ready to apply?

Send your application to
• *[email protected]**