Architects and optimizes embedded Layer 2/Layer 3 protocol stack software for 4G/5G cellular systems. Develops new product capabilities, interprets communications standards, troubleshoots complex customer defects, and collaborates with distributed engineering teams to integrate, validate, and improve system performance.
About the Role
Parallel Wireless is seeking a Principal Engineer, Stack, to work with our internal Engineering teams and external partners for our 5G products. In this role, you will contribute across the full embedded protocol stack development lifecycle, building new capabilities for future products. We are looking for an experienced engineer with a strong background in real-time systems and 4G/5G communications who thrives in a collaborative, global engineering environment.
What You Will Do
- Architect and optimize embedded Layer 2/Layer 3 (L2/L3) protocol stack software for 5G cellular systems.
- Identify new features and software environments for next-generation Parallel Wireless products.
- Investigate, troubleshoot, and resolve complex software defects in existing solutions used by customers worldwide.
- Interpret relevant L2/L3 communications standards and technical specifications and translate them into efficient, reliable software implementations.
- Collaborate with engineering teams across multiple sites to integrate, validate, and improve stack functionality and system performance.
What You Bring
- At least 10+ years of hands-on development experience with embedded or real-time components in multithreaded systems.
- Bachelor’s degree or Masters degree in Computer Science, Computer Engineering, or a related discipline.
- Solid understanding of communication protocols, with the ability to interpret L2/L3 standards and specifications and implement them effectively.
- Excellent communication skills and the ability to work independently and collaboratively in a global, multisite organization.
Preferred Qualifications
- Prior development experience with cellular communication standards, particularly 4G LTE and/or 5G NR.
- Experience with containers, Docker, and Kubernetes.
- Experience using telecommunications test and diagnostic tools, such as UE simulators and QXDM.
- Hands-on experience working with cellular modems.
Similar Jobs
Cloud • Information Technology • Productivity • Security • Software • App development • Automation
Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.
Top Skills:
JavaJavaScriptKotlinNode.jsReactScala
Information Technology
Leads a small engineering team while building proprietary AI SaaS capabilities, including RAG pipelines, vector search, persistent memory, workflows, orchestration, and personalization. Owns full-stack product delivery, backend architecture, relational data models, integrations, testing, deployment, monitoring, security, scalability, and production support. Reviews external engineering work, mentors developers, partners with product and platform teams, and assumes increasing ownership of the platform’s technical health and reliability.
Top Skills:
Ai Coding AgentsAnthropicEmbeddingsLivekitNuxtPgvectorPostgresPrismaRagStripe ConnectTwilioVector SearchVueZoom
Cloud • Information Technology • Productivity • Security • Software • App development • Automation
Lead the technical direction and implementation of large-scale SaaS product features. Build secure, reliable, maintainable, well-tested software; evaluate architectural trade-offs; debug team inefficiencies; and contribute to code reviews, documentation, and complex bug fixes. Collaborate across product, design, and engineering, influence strategy, identify organizational blockers, mentor engineers, and improve engineering practices around testing, performance, security, privacy, and reliability.
Top Skills:
AWSDistributed SystemsJavaKotlinMicroservicesObservability ToolsSaaS
What you need to know about the Los Angeles Tech Scene
Los Angeles is a global leader in entertainment, so it’s no surprise that many of the biggest players in streaming, digital media and game development call the city home. But the city boasts plenty of non-entertainment innovation as well, with tech companies spanning verticals like AI, fintech, e-commerce and biotech. With major universities like Caltech, UCLA, USC and the nearby UC Irvine, the city has a steady supply of top-flight tech and engineering talent — not counting the graduates flocking to Los Angeles from across the world to enjoy its beaches, culture and year-round temperate climate.
Key Facts About Los Angeles Tech
- Number of Tech Workers: 375,800; 5.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Snap, Netflix, SpaceX, Disney, Google
- Key Industries: Artificial intelligence, adtech, media, software, game development
- Funding Landscape: $11.6 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Strong Ventures, Fifth Wall, Upfront Ventures, Mucker Capital, Kittyhawk Ventures
- Research Centers and Universities: California Institute of Technology, UCLA, University of Southern California, UC Irvine, Pepperdine, California Institute for Immunology and Immunotherapy, Center for Quantum Science and Engineering


