Sr Software Engineer, Stack

Parallel Wireless; Nashua (NH); On-site; USD 100,000 - 130,000; Full time

Job summary

A leading telecommunications company is seeking a Senior Software Engineer based in Nashua, NH. The ideal candidate will have a strong background in telecom software development, particularly in 4G/LTE and real-time systems programming. Responsibilities include designing protocol stack features, debugging C/C++ code on Unix/Linux systems, and enhancing product performance. Qualified candidates should possess a Master’s or Bachelor’s degree in a relevant field and a passion for innovation in mobile networks.

Qualifications

• Proven experience in telecom software development, especially LTE/4G, with exposure to 5G.
• Strong expertise in protocol development (RRC, MAC, RLC, PDCP).
• Hands-on experience with complex real-time telecom systems.

Responsibilities

• Design and develop 4G/LTE protocol stack features.
• Write, optimize, and debug C/C++ code on Unix/Linux/POSIX systems.
• Collaborate with peers to drive engineering productivity.

Skills

Telecom software development

Protocol development

C/C++ programming

Unix/Linux real-time operating systems

Problem-solving skills

Customer issue handling

Excellent communication

Education

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

Job description

Parallel Wireless is reimagining mobile networks with innovative, energy‑efficient Open RAN solutions. We are leading the future of telecommunications by driving green and sustainable networks. Our mission is to accelerate GSMA’s Mobile Net Zero initiative by reducing TCO and driving innovation across the telecom ecosystem. Learn more about our mission, vision, and values at www.parallelwireless.com.

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

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 embraces diversity and equality of opportunity. We welcome and consider applications from all qualified candidates regardless of their characteristics. We comply with all applicable laws and regulations on non‑discrimination in employment and work authorization. Parallel Wireless does not accept unsolicited resumes or applications from agencies or individuals.