Staff Engineer

Role overview

Staff Engineer at Tejas Networks

As a Staff Engineer, you will be responsible for driving end-to-end system integration, feature validation, and release readiness for Wireless RAN products.

Responsibilities

• You will lead complex integration activities, provide technical leadership within the team, collaborate with development and verification teams, and ensure timely delivery of high-quality feature and maintenance releases.
• Lead integration of Firmware (FW), FPGA, Layer 1, Layer 2, Layer 3, and OAM components to enable Integrated SW build for required feature bring-up and product verification.
• Perform end-to-end testing of features: LTE and NR features including Carrier Aggregation, MIMO, VoLTE, EN-DC, and mobility scenarios, etc.
• Analyze protocol logs, KPI data, and system traces to identify and resolve defects.
• Work closely with development, architecture, product management, and customer support teams for issue resolution and feature acceptance.
• Contribute to test automation, continuous integration, and quality improvement initiatives.
• Support customer trials, field testing, and production deployment activities.
• Drive continuous improvement in system integration processes, tools, 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.
• 11 to 14 yrs+ years of experience in Wireless Communications, LTE, and 5G NR technologies
• B.Tech/BE (CSE/ECE) or any other equivalent degree
• Minimum qualification: Bachelor's Degree

Preferred qualifications and skills

• Hands-on experience with UE simulators such as TM500, Keysight, or equivalent test platforms.
• Good understanding of Core Network configuration and integration for LTE/5G testing.
• Exposure to O-RAN architecture and multi-vendor interoperability testing with CU/DU.
• Experience in CI/CD, build integration, test automation, and continuous validation frameworks.

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

• The role requires deep expertise in wireless systems, strong debugging skills, and ownership of cross-functional technical execution.
• 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.
• Own system integration and validation activities for 4G/5G RAN products and solutions.
• Review product requirements and derive integration and validation scope for feature and maintenance releases.
• Define SIT test strategies, test plans, and validation methodologies for new product releases.
• Lead root cause analysis and provide technical guidance for complex integration issues.
• Strong understanding of RAN architecture and LTE/NR Layer 1, Layer 2, and Layer 3 protocols.
• Hands-on experience in system integration, feature validation, and troubleshooting.
• Strong Knowledge in LTE/NR call flows, mobility procedures, and performance optimization.
• Experience with FAPI-based integrations, front-haul debugging, and O-RAN interfaces.
• Experience with protocol analyzers, network tracing, and log analysis tools.
• Strong expertise in debugging system-level DL and UL timing issues across DU, RU, and UE interfaces, including synchronization, scheduling, HARQ timing, frame alignment, latency analysis, and front-haul timing-related anomalies.
• Hands-on experience in analyzing and resolving LTE/5G NR timing issues using protocol logs, FAPI traces, Layer 1 logs, OTA captures, and O-RAN/eCPRI front-haul diagnostics.
• Strong Linux knowledge and scripting skills in Python & Shell Excellent debugging, analytical, and problem-solving skills.