Required Skills: C/C++, Python, Linux, 3GPP Layers 1–3, PHY, MAC, RLC, PDCP, RRC, NAS, 5G-Advanced, next-generation wireless; protocol-stack software development
Job Description
Wireless Communications Engineer
- A development-focused role working with customer engineering teams and LTTS Customer R&D to develop, customize, integrate and optimize software for next-generation wireless systems.
- The engineer contributes production code, debugs protocol-stack behavior and turns field challenges into product enhancements.
Key Responsibilities:
- Design, develop and enhance software features in wireless systems and protocol stacks using C/C++ and Python on Linux.
- Debug and root-cause complex issues across Layer 1 (PHY), Layer 2 (MAC/RLC/PDCP) and Layer 3 (RRC/NAS).
- Analyze signaling logs, traces, packet captures and performance metrics to resolve issues in customer deployments and integrations.
- Modify existing code and build new features to meet customer-specific requirements; build prototypes to validate new features.
- Develop APIs, tools, automation frameworks and diagnostics to improve productivity and system visibility.
- Participate in code reviews; contribute to software releases, validation and deployment of features into customer environments.
- Collaborate with LTTS Customer R&D to convert field findings into product improvements.
- Lead technical discussions with customers on protocol implementation, architecture and performance optimization.
Required Qualifications:
- Bachelor’s or master’s degree in computer science, Computer Engineering, Electrical Engineering or a related field.
- 6+ years of software development experience in wireless communication systems.
- Strong C/C++ and Python skills; hands-on experience in Linux environments.
- Solid understanding of 4G LTE, 5G NR or 5G-Advanced, with deep knowledge of 3GPP Layer 1–3 protocols (especially RRC and NAS).
- Hands-on development in one or more protocol-stack layers (PHY, MAC, RLC, PDCP, RRC, NAS) with ownership of design, implementation, debugging and maintenance.
- Strong root-cause analysis using logs, traces, packet captures and signaling analysis.
- Ability to understand and extend existing codebases; experience with code reviews and collaborative development.
- Strong problem-solving, communication and collaboration skills.
Preferred Qualifications:
- Experience with modem software, protocol-stack development, wireless infrastructure, device testing or network simulation platforms.
- Embedded, real-time or firmware development experience.
- Experience building software tools, automation frameworks and APIs; knowledge of wireless test and measurement systems.
- Customer-facing experience on complex technical projects; experience leading technical investigations.
- Exposure to 5G-Advanced, NTN, Open RAN or 6G technologies.