As a Principal Engineer, you will be the technical authority for system integration across multiple wireless product releases and technology domains. You will define integration strategies, influence product architecture from an integration perspective, drive complex technical problem-solving, and provide leadership across engineering organizations. You will play a critical role in ensuring scalability, stability, interoperability, and deployment readiness of Wireless 4G/5G RAN solutions.

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.
- Robust 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.

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

Tejas Networks is a global broadband, optical and wireless networking company, with a focus on technology, innovation and R&D.; We design and manufacture high-performance wireline and wireless networking products for telecommunications service providers, internet service providers, utilities, defence and government entities in over 75 countries. Tejas has an extensive portfolio of leading-edge telecom products for building end-to-end telecom networks based on the latest technologies and global standards with IPR ownership.

We are a part of the Tata Group, with Panatone Finvest Ltd. (a subsidiary of Tata Sons Pvt. Ltd.) being the majority shareholder. Tejas has a rich portfolio of patents and has shipped more than 900,000 systems across the globe with an uptime of 99.999%.

Our product portfolio encompasses wireless technologies (4G/5G based on 3GPP and O-RAN standards), fiber broadband (GPON/XGS-PON), carrier-grade optical transmission (DWDM/OTN), packet switching and routing (Ethernet, PTN, IP/MPLS) and Direct-to-Mobile and Satellite-IoT communication platforms.



Our unified network management suite simplifies network deployments and service implementation across all our products with advanced capabilities for predictive fault detection and resolution. As an R&D-driven; company, we recognize that human intelligence is a core asset that drives the organization’s long-term success.

Over 60% of our employees are in R&D;, we are reshaping telecom networks, one innovation at a time.

Diversity and Inclusion Statement:

- Tejas Networks is an equal opportunity employer. We celebrate diversity and are committed to creating all inclusive environment for all employees.
- We welcome applicants of all backgrounds regardless of race color, religion, gender, sexual orientation, age or veteran status.
- Our goal is to build a workforce that reflects the diverse communities we serve and to ensure every employee feels valued and respected.

Tejas Networks provides scalable and innovative 4G/5G solutions. Our portfolio encompasses Radio Access Network solutions including Remote Radio Heads (RRHs) or Radio Units (RUs), Massive MIMO Radios (Advanced Antenna Systems, AAS) and Base Band Units (BBUs), Distributed Units (DUs) and Centralized Units (CUs), Mobile Packet Core and an Advanced Network management solution.

Tejas Networks has invested in Wireless product development since 2012 with a vision to create globally deployable telecom solutions. Several of the key components developed by the Wireless R&D; team have been installed and commissioned across multiple continents. We are an active partner for 4G and 5G in the Indian Ecosystem and have significantly contributed to India’s standardization efforts in 3GPP and 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.

Product Lifecycle Management at Tejas are the forefront runners taking the world class solutions to our customers.

Tejas solutions are unique with inhouse Radio designs developed by seasoned experts in ASIC chip design involving 4G LTE Radio and 5G NR Radios.

Tejas offers best Network Management solution for the entire portfolio of 4G and 5G device ecosystem management.

Tejas Wireless offering include an advanced Mobile Packet Core, solution is critical for ensuring seamless, high-performance connectivity.

Engineering Program Management, which plays a crucial role in overseeing and coordinating the successful execution of engineering projects or programs.

All Tejas Wireless solutions are monitored by Network Support Group who constantly handle various aspects like validation of the solutions.

📌 Principal Engineer (Karnataka)
🏢 Tejas Networks
📍 Karnataka