Principal Engineer

Role overview

Principal Engineer at Tejas Networks

As a Principal Engineer, you will be the technical authority for system integration across multiple wireless product releases and technology domains.

Responsibilities

• You will define integration strategies, influence product architecture from an integration perspective, drive complex technical problem-solving, and provide leadership across engineering organizations.
• Drive integration of FW, FPGA, L1, L2, L3, OAM, DU, and RU components to enable product verification and deployment readiness.
• 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.
• Support customer trials, field deployments, escalations, and critical issue management.
• Drive continuous improvement of integration processes, tools, automation frameworks, and development infrastructure.

Required qualifications

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

Preferred qualifications and 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.

Employment details

• Location: Surya Sapphire [Bangalore] [India]

About the employer

• Tejas Networks has invested in Wireless product development since 2012 with a vision to create globally deployable telecom RAN solutions.

Additional role details

• You will play a critical role in ensuring scalability, stability, interoperability, and deployment readiness of Wireless 4G/5G RAN solutions.
• Tejas wireless team has developed high-capacity LTE macro eNodeB, 5G NR gNodeB along with Radio Units as part of end-to-end integrated solution to their customers.
• Our systems are already deployed in customer’s commercial network and engineers are working on to enhance the capacity and improve system level performance.
• Several of the key components developed by the Wireless R&D team have been installed and commissioned across three continents.
• We are an active partner for 5G in the Indian Ecosystem and have significantly contributed to India’s standardization efforts in 3GPP, through TSDSI.
• The wireless team has over 100 patents.
• As part of the wireless team, you will work on developing products for next generation wireless systems.
• Define integration architecture, validation strategy, and release qualification plans for feature and maintenance releases.
• Provide technical leadership for bring-up and validation of advanced LTE and NR features, including CA, MIMO, VoLTE, EN-DC, mobility, and performance enhancements.
• 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.
• Mentor engineers and provide technical guidance on wireless protocols, integration methodologies, and debugging techniques.
• 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.