Sr Software Engineer, Stack

About the role

Parallel Wireless is reimagining mobile networks with innovative, energy-efficient Open RAN solutions. Join us as we lead the future of telecommunications, driving innovation through green and sustainable networks. Learn more about our mission, vision and values.

We are seeking an experienced Senior Software Engineer with a strong background in telecommunications, 4G/LTE protocol stack development, and real-time systems programming.

The ideal candidate will have hands-on expertise in LTE control-plane and data-plane layers (RRC, MAC, RLC, PDCP) and proven skills in C/C++ development on Unix/Linux environments. This role is focused on core product development, feature implementation, and field issue resolution—not QA, testing, or integration. You’ll work closely with cross-functional teams to design, code, and deliver high-performance LTE solutions.

Key Responsibilities: - Design and develop 4G/LTE protocol stack features (control-plane & data-plane).

- Work on protocol layers such as RRC, LTE-MAC, RLC, and PDCP.

- Write, optimize, and debug C/C++ code on Unix/Linux/POSIX real-time operating systems.

- Analyze and resolve customer-reported and internal QA issues.

- Handle field issues, debugging, and customer support escalations.

- Bring up and maintain LTE test setups in a running state.

- Collaborate with peers to augment LTE/5G knowledge and drive engineering productivity.

- Contribute to product performance improvements and ensure high-quality deliverables.

Skills & Experience - Proven experience in telecom software development (LTE / 4G, preferably with exposure to 5G).

- Strong expertise in protocol development (RRC, MAC, RLC, PDCP).

- Excellent design and coding skills in C/C++.

- Hands-on experience with Unix/Linux real-time operating systems.

- Strong problem-solving and debugging skills for complex telecom systems.

- Experience handling customer issues and fixing field problems.

- Excellent communication skills and ability to work across global teams.

Qualifications - Master’s or Bachelor’s degree in Computer Science / Computer Engineering / Telecommunications.

- Experience in product development roles (not QA / Integration / pure testing).

- Familiarity with telecom standards, LTE architecture, and 5G evolution.

- Exposure to telecom product lifecycles and performance optimization.

Parallel Wireless is expanding the ecosystem for Open RAN with the GreenRAN™ energy-efficient Hardware-Agnostic technology. Deployed worldwide, our comprehensive 2G/3G/4G/5G Macro RAN solutions enhance network security while reducing operating expenses. As pioneers of Open RAN, we prioritize innovation, flexibility, and sustainability to help build a more connected, and green networks. Headquartered in the USA with global R&D centers, we are proud to serve over 60 customers worldwide and have been recognized with over 100 industry awards. Our mission is to accelerate GSMA’s Mobile Net Zero initiative by reducing TCO and driving innovation across the telecom ecosystem.Learn more at www.parallelwireless.com.