Vishwas S
Bangalore
Summary
Accomplished Principal Engineer at Broadcom with expertise in C and Linux, successfully optimized data-path components, reducing upgrade time by 90%. Proven ability to lead technical initiatives and enhance software architecture, demonstrating strong problem-solving skills and a results-driven mindset.
Overview
19
19
years of professional experience
Work History
Principle Engineer
BROADCOM
Bangalore
01.2022 - Current
- Maintaining ESXi Kernel's Data-path components NETQ Load balancer and Uplink layer.
- Optimised ENS uplink device attach/detach flow, reducing upgrade time from 30 seconds to 2.8 seconds.
Staff Engineer
Juniper Networks
Bangalore
10.2018 - 12.2022
- Developed FreeBSD kernel module for UART's DCD signal handling.
- Created Linux-based driver for IDT timing chip.
- Enhanced I2C controller driver to support R5/R6 read methods and W5 write method, enabling selection of blank IDT chip for cost reduction.
- Maintained ISSU for qfx-5e switching platform.
Technical Leader
Cavium Networks
Bangalore
12.2015 - 09.2018
- Upgraded and ported MVLinux kernel on MIPS and PowerPC architectures.
- Developed kernel and user-land recipes for Yocto-based build system for MVL customer.
- Resolved local and field issues related to MVL distribution CGE6 and CGE7.
Senior Staff Software Engineer
Broadcom Corporation
Bangalore
06.2015 - 12.2015
- Re-engineered and developed PHY chip driver for Broadcom (10/25/40 G) to enhance modularity.
- Transformed software architecture, enabling driver reusability across newer PHY chips in same hardware family.
Software Engineer Gr-8
Cisco Systems India
Bangalore
11.2011 - 06.2015
- Designed and developed Packet Processing linux Kernel Module complying to Ciscos Next generation IO module specification with Software MQ and back-pressure support running over BRCM 96268 SMP system.
- Designed and Developed Linux Control Plain Application powered by Linux 2.6.28 running over Wintegra NPU, communicating with Lantiq (Socrates-4e) DSL chipset.
- Designed, developed and tested a linux Kernel Module running over Free-scale Power Processor (p1021) dual core AMP system, powered by Linux 2.6.32. IOS puts this information on a fixed location of SDRAM, the kernel module running on other CPU while booting reads this.
Senior Software Engineer
Aricent Technologies
Bangalore
11.2010 - 10.2011
- Formulated, implemented, and validated AT command-driven test suite for IFX mobile platform (IFX XGOLD-2130) operating on ThreadX RTOS, encompassing display, backlight, keypad, and audio jack functionalities.
Senior Software Engineer
LG Soft India
Bangalore
01.2008 - 10.2010
- Developed / ported the driver code to support the Monochrome LCD (96x64) on XGOLD-2130 platform, running ThreadX RTOS.
- Developed Backlight Driver (LG GD 350) on IFX XGOLD-2130, platform powered by ThreadX RTOS. LCD back-light driver can control the intensity by programming the RT9367A IC registers over i2c bus.
- Designed and developed Battery Charger Driver (LG GB220) running over IFX XGOLD-2130 platform and powered by ThreadX RTOS. ISL 6291 (charging IC) is used to control charging, which provides constant current/voltage charging to the Li-ion battery connected to the charging IC.
Trainer/Developer
Jiyoun Systems
Noida
05.2006 - 12.2007
- Created an i2c Client Driver (LM75) on KB9202B ARM embedded board running Linux 2.6.20.
- Facilitated application access to current temperature through sysfs file system nodes.
Education
PG Diploma - VLSI Design
CDAC
Pune, India12.2005
Bachelor of Engineering - Electronics & Telecommunication
UNIVERSITY OF ALLAHABAD
UP, India12.2003
Bachelor of Science - Physics, Mathematics & Chemistry
UNIVERSITY OF ALLAHABAD
UP, India12.1999
Skills
- C programming and assembly language
- Shell scripting
- Version control (Git and SVN)
- Kernel and driver development
- System optimization
- Embedded systems expertise
- Technical leadership
- Debugging tools (GDB)
- Makefile management
- Networking protocols (TCP/IP, UDP, Ethernet)
- I2C, SPI, and UART communication
- IPv4 and VLAN tagging (8021Q)
- Operating systems (Linux)
- Real-time operating systems (ThreadX)
Open Source Contributions
- Reported and fixed:
u-boot: https://patchwork.ozlabs.org/patch/573097/
u-boot: https://patchwork.ozlabs.org/patch/572829/
- Reported (confirmed):
ntp: http://bugzilla.ntp.org/showbug.cgi?id=3028
Hobbies and Interests
- Writing Hindi Poems.
- Playing Piano.
Test Scores
- GATE, 2003, 92
- GATE, 2012, 96
Timeline
Principle Engineer
BROADCOM
01.2022 - Current
Staff Engineer
Juniper Networks
10.2018 - 12.2022
Technical Leader
Cavium Networks
12.2015 - 09.2018
Senior Staff Software Engineer
Broadcom Corporation
06.2015 - 12.2015
Software Engineer Gr-8
Cisco Systems India
11.2011 - 06.2015
Senior Software Engineer
Aricent Technologies
11.2010 - 10.2011
Senior Software Engineer
LG Soft India
01.2008 - 10.2010
Trainer/Developer
Jiyoun Systems
05.2006 - 12.2007
PG Diploma - VLSI Design
CDAC
Bachelor of Engineering - Electronics & Telecommunication
UNIVERSITY OF ALLAHABAD
Bachelor of Science - Physics, Mathematics & Chemistry
UNIVERSITY OF ALLAHABAD
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