Mar 2022 – Mar 2025 · 3 yrs · Chennai, Tamil Nadu, India

May 2021 – Mar 2022 · 10 mos · Bengaluru, Karnataka, India

Jun 2016 – Nov 2020 · 4 yrs 5 mos · Chennai

Sep 2011 – May 2016 · 4 yrs 8 mos · Chennai, India

• Managing a firmware team and collaborating with Product marketing, hardware & software teams for the following projects:
• o Multi-touch sensing: Designed two-dimensional (X/Y) touch sensing that can detect two touches separated at 2-mm (edge-to-edge), track touches as they move and operate at 12ms response time, 4uA sleep current & 1.2mA active current
• o Noise measurement and mitigation: Designed and developed algorithms to calculate & track Signal-to-Noise ratio in touch signals, mitigate conducted noise (up to 6 Volts) by moving to a cleaner measurement frequency and supporting all these aspects in the background so that foreground tasks (response to application/user) are not affected.
• o Short-range proximity sensing: Designed a product that supports up to 3 cm proximity detection with support for noise mitigation, direction based touch suppression and I2C communication.
• o Safety certification: Support fault detection in firmware, IC and hardware at run-time and successfully passed VDE and UL audits against IEC60730-1 & IEC60335-2-6 standards
• o New Product Introduction: Production/Quality support for fixed-function touch sensing devices and manage corresponding lab/validation/hardware/technical writing aspects
• o Collaborate with Software team to get configuration, analysis & debugging support; Work closely with hardware team to develop sensor boards that offer best performance for 2D sensing

Jan 2005 – Sep 2011 · 6 yrs 8 mos · Hyderabad

• Significantly reduced timeframe in aligning the timing to a new WCDMA cell & WCDMA channel setup from 20 milliseconds to 10 milliseconds apart from reducing the timing calculations required for WCDMA Hard Handover by 50%.
• Designed, Coded and Maintained Wcdma Physical layer driver across Interrupt and task handlers to achieve Wcdma Release99 channel management, dual subscription re-design, Handovers and timeline management; Intense Trace32 debugging in ARM/QDSP6 processors and Management of concurrency management between task & ISR were utilized in all activities.
• Provide leadership to a 4 member team involved in design, coding, testing and integration of dual subscription across WCDMA Layer 1 and RRC; Redesigning of WCDMA physical layer driver/RRC to support a mobile in dual subscription mode using single modem/ RF; Designed and led the team for Wcdma Physical layer driver dual subscription procedures like Idle mode, Acquisition, System Information reading, Downlink Channel Setup, Paging sleep, Paging wakeup, clocks management, sharing of hardware and firmware resources with GSM; Extension of Wcdma Physical layer driver interface with firmware to manage rotator errors across subscription switch and reducing subscription switch time (from 15 milliseconds to 7milliseconds).
• Redesign the WCDMA R99 channel manager in Wcdma physical layer driver to improve for performance and ease of maintenance spanning design, coding, testing and integration besides focusing on changes to support the new MBMS standard from 3GPP. The re-design effort created new interrupt handlers to streamline channel management and wcdma Layer1 sub-modules from scratch to take care of – Addition, Drop, Re-configuration, Suspend and Resumption of Wcdma physical layer channels; Interface with DRX manager for maintaining the channel UP time (including PICH and SCCPCH);

Mar 2003 – Dec 2004 · 1 yr 9 mos · Hyderabad Area, India

• Migrated GSM Layer-1 module from single monitoring scheme to dual monitoring scheme resulting in reduction in cell measurement time by 50% and increasing number of measurable cells by 100%.
• Acquired significant exposure in various GSM stack modules, embedded environment and ARM platform.
• Focused on GSM stack enhancement aimed at enhancement of existing functionalities of the Protocol Stack to meet the market demands.
• Involved in estimation, impact analysis, requirements, design, and implementation and testing besides participating in dual monitoring within a single GSM idle frame and providing a raw access of SIM files to MS (Mobile Station) users.
• Maintained GSM stack through resolution of issues (primarily in Layer-1, RR, CC, MM & Circuit Switched Data (CSD) modules) detected during various phases of testing (in-house lab testing, field-testing and customer testing).
• Coordinated with the testers for identification and rectification of issues within critical deadlines.

Jun 2001 – Feb 2003 · 1 yr 8 mos · Hyderabad Area, India

• Functioned in the integrated Digital Enhanced Network (iDEN) Operations and Maintenance Centre (OMC) in Simple Network management Protocol / Events Management (SNMP/EM) team.
• Focused on enhancement and maintenance of software module to manage iDEN Network through SNMP protocol.
• Enhanced and maintained software entity to manage subscription for events/alarms across BSS & NSS and forward the same to the OMC subscriber.
• Maintained software to function as a gateway between two formats of alarms, events and other commands - SNMP v1 format and Network equipment specific format.