Sr Software Engineer, Stack

Parallelwireless; Nashua (NH); On-site; USD 120,000 - 180,000; Full time

Job summary

Parallel Wireless is seeking an experienced Senior Software Engineer to design and implement 4G/LTE protocol stack features on Unix/Linux real-time systems. You will contribute across the control‑plane and data‑plane layers (RRC, MAC, RLC, PDCP) and work on high‑performant LTE solutions.

You will collaborate with global teams to deliver robust software in a product development environment, focusing on core engineering, feature implementation, and field issue resolution rather than QA or testing.

Qualifications

• Proven telecom software development experience (LTE/4G, exposure to 5G preferred).
• Strong protocol stack design skills for RRC, MAC, RLC, and PDCP.
• Excellent C/C++ coding skills and Unix/Linux RTOS expertise.
• Experience in product development roles, not QA/testing.
• Effective communication for global cross‑team collaboration.

Responsibilities

• Design and develop LTE protocol stack features (control-plane and data-plane).
• Work on RRC, LTE-MAC, RLC, and PDCP layers.
• Write, optimize, and debug C/C++ code on Unix/Linux RTOS.
• Analyze and resolve customer-reported and internal issues.
• Bring up LTE test setups and maintain running systems.
• Collaborate with peers to advance LTE/5G knowledge and productivity.
• Contribute to product performance improvements and high-quality deliverables.

Skills

C/C++ development

Unix/Linux

Real-time systems

LTE protocol stack

RRC/MAC/RLC/PDCP

Education

Master's or Bachelor's in Computer Science / Computer Engineering / Telecommunications

Tools

POSIX RTOS

Job description

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 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.

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.

Qualifications

• 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.
• 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.

Equal Opportunity Employer

Parallel Wireless embraces diversity and equality of opportunity. We are committed to building inclusive and diverse teams representing all backgrounds, with a wide range of perspectives, and empowering industry‑leading skills. We welcome and consider applications to join our team from all qualified candidates, regardless of their characteristics. We comply with all applicable laws and regulations on non‑discrimination in employment (and recruitment), as well as work authorization and employment eligibility verification requirements.