Tech Lead, Stack

Parallel Wireless is a U.S.-based pioneer in Open RAN innovation, transforming how mobile networks are built, optimized, and powered. Through our GreenRAN™ portfolio, we enable operators to deliver next-generation connectivity with unmatched energy efficiency, automation, and flexibility. What you need

Strong hands-on experience in LTE Layer 2 – MAC, RLC, PDCP

In-depth knowledge of 3GPP LTE standards (36.321, 36.322, 36.323)

Excellent programming skills in C/C++ (embedded, real-time systems)

Experience with multi-threaded systems, IPC, and high-performance software

Debugging experience using tools like GDB, Wireshark, protocol analyzers

Strong understanding of LTE call flows and KPIs (throughput, latency, BLER)

Strong technical leadership and ownership 

Ability to explain complex protocol behavior clearly

Excellent problem-solving and analytical skills

Effective communication with cross-functional and global teams

Ability to work in a fast-paced R&D environment

Mentor and guide a team of junior engineers

Break down requirements into technical tasks and ensure timely deliver

What you will do :

Lead development/support/maintenance of features such as:

Scheduling and HARQ (MAC)

RLC AM/UM/TM procedures

PDCP ciphering, integrity protection, ROHC

QoS, DRX, SR/BSR, Timing Advance handling

Carrier Aggregation, MIMO, and 256-QAM support

Optimize throughput, latency, CPU usage, and memory footprint

Analyze and resolve complex protocol and performance issues in lab and field environments