Senior Engineer

1 month ago

bangalore, India Tejas Networks Full time

About Tejas Networks


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.


Why join Tejas:

We are on a journey to connect the world with some of the most innovative products and solutions in the wireless and wireline optical networking domains. Would you like to be part of this journey and do something truly meaningful? Challenge yourself by working in Tejas’ fast-paced, autonomous learning environment and see your output and contributions become a part of live products worldwide.

At Tejas, you will have the unique opportunity to work with cutting-edge technologies, alongside some of the industry’s brightest minds. From 5G to DWDM/ OTN, Switching and Routing, we work on technologies and solutions that create a connected society. Our solutions power over 500 networks across 75+ countries worldwide, and we’re constantly pushing boundaries to achieve more. If you thrive on taking ownership, have a passion for learning and enjoy challenging the status quo, we want to hear from you


About the Team


The Radio Software Team is Modern eNodeB (4G LTE Radio) or gNodeB (5G NR Radio) are key elements of mobile Telecom network. These radios are realized in different ways Standalone Radio , BBU (Base Band Unit) and RRH (Remote Radio Head), O-RAN CU (Central Unit) DU (Distributed Unit) and RU (Radio Unit). In deployments RU/RRH are


deployed on top of the tower and BBU/CU-DU at bottom. The RU/RRH key functionality is to convert base band signals to RF and also amplify signal to higher power.


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


What you work:


Responsible for Design, Development and Implementation of Fronthaul & LowPHY Control and Configuration software applications related to 5G Radio Unit

Must have ability to think outside the box, creating innovate solution to complex embedded applications and wireless systems.

Candidate will be working in variety of wireless products that are telecom grade developed, manufactured, and supplied to international customers Tejas Networks Ltd.

should have working experience with international customer & have handled development of software’s for networking / telecom equipment’s.

  • Responsible for building Control and Configuration Software FPGA/SoC Based FrontHaul, BeamForming & LowPHY IPs
  • Platform Architecture definition and bring in innovation in modularity.
  • Interact & Coordinate with internal teams to build better product.


Mandatory skills:


Must have mandatory experience in developing sequencing, control, and configuration application wrapper code for eCPRI FrontHaul, LowPHY and Beamforming IPs of Xilinx or Intel.

Must have knowledge on O-RAN WG4 CUS plane. Should have worked on 7.2x Split O-RUs.

Understanding of O-RAN WG4 M-Plane.

Must have knowledge on Embedded build environment.

Must have experience in writing drivers for devices with interfaces such as AXI, UART, SPI, I2C, JESD, GPIO etc.

Must have understanding on Message queues, Shared memory, Process, Threads, Scheduler

Must have hands on experience in handling Oscilloscopes, Logic/ protocol Analyzers, Multimeters etc.

Understanding of debuggers including JTAG, GDB etc.

Understanding GitHub, Jira etc.

C OR C++ OR Python

Understanding of baseband control system, state machines and configuration management.

Good in documentation of High-level design and Low-level design.


Desired Skills:


Programming of Clocking ICs (AD, Si Labs, SiTime, Microsemi etc)

Experience in using Spectrum Analyzer, Signal Generators, RF Power measurement.

Secure coding and software quality management.

Knowledge on High Power RF Wireless Systems.

Knowledge on Network protocols and socket programming.

Experience in Wireless Radio, Wireless protocols desirable


Preferred Qualifications:


Experience: 3+ years’ experience working in application development for Radio Fronthaul, Beam Forming & LowPHY


Education: B.E / B.TECH / M.S / M.Tech in engineering discipline or equivalent work experience


Diversity and Inclusion Statement:



Programming of Clocking ICs (AD, Si Labs, SiTime, Microsemi etc)

Experience in using Spectrum Analyzer, Signal Generators, RF Power measurement.

Secure coding and software quality management.

Knowledge on High Power RF Wireless Systems.

Knowledge on Network protocols and socket programming.

Experience in Wireless Radio, Wireless protocols desirable

Experience working in a multi-vendor, multi service provider environment.

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