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Principal Engineer

Tejas Networks
Bengaluru, IND
Full-time
Senior
Onsite
Discovered 3 weeks ago
linuxpython

Full Job Posting

Qualifications

  • Experience: 15 to 18 yrs from Wireless Communications, LTE, and 5G NR product development, system integration, or verification.
  • Education: B.Tech/BE (CSE/ECE) or any other equivalent degree

Responsibilities

  • Define integration architecture, validation strategy, and release qualification plans for feature and maintenance releases.
  • Drive integration of FW, FPGA, L1, L2, L3, OAM, DU, and RU components to enable product verification and deployment readiness.
  • Provide technical leadership for bring-up and validation of advanced LTE and NR features, including CA, MIMO, VoLTE, EN-DC, mobility, and performance enhancements.
  • Lead cross-functional debugging and root cause analysis of complex system, interoperability, and performance issues.
  • Drive resolution of system-level DL/UL timing, synchronization, scheduling, latency, and front-haul related issues.
  • Collaborate with Architecture and Development teams to influence feature design, integration readiness, and product quality.
  • Define SIT methodologies, automation strategies, quality metrics, and best practices across programs.
  • Lead interoperability validation across DU, RU, CU, Core Network, UE, and multi-vendor O-RAN ecosystems.
  • Support customer trials, field deployments, escalations, and critical issue management.
  • Mentor engineers and provide technical guidance on wireless protocols, integration methodologies, and debugging techniques.
  • Drive continuous improvement of integration processes, tools, automation frameworks, and development infrastructure.
  • Mandatory Skills:
  • Working in 4G/5G eNB/gNB product with strong involvement in integrating L1,L2,L3 & OAM components as a SIT feature/maintenance release.
  • Strong experience in integrating and validating FW, FPGA, L1, L2, L3, OAM, DU, and RU components for feature and maintenance releases.
  • Deep understanding of LTE/NR RAN architecture, protocol stack, call flows, mobility procedures, and performance optimization techniques.
  • Proven expertise in end-to-end system integration, feature validation, and release qualification of eNB/gNB products.
  • Strong knowledge of O-RAN architecture, FAPI interfaces, front-haul protocols, and DU-RU interoperability.
  • Expert-level debugging skills using protocol analyzers, FAPI traces, Layer 1 logs, OTA captures, KPI analysis, and system traces.
  • Strong expertise in debugging system-level DL/UL timing issues, synchronization, scheduling, HARQ processes, frame alignment, latency, and throughput optimization.
  • Hands-on experience analyzing and resolving issues across DU, RU, UE, and Core Network interfaces.
  • Strong Linux expertise with scripting and automation skills using Python and Shell.
  • Excellent technical leadership, analytical, problem-solving, and stakeholder management skills.
  • Desired Skills:
  • Experience with UE simulators such as TM500, Keysight, or equivalent LTE/5G test platforms.
  • Good understanding of LTE/5G Core Networks and end-to-end system validation.
  • Experience with CI/CD, test automation, continuous validation, and large-scale integration environments.
  • Exposure to cloud-native RAN, virtualization, and containerized deployments.
  • Experience leading customer-facing programs, field trials, and multi-vendor interoperability activities.

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