Feb 2024 – Jul 2025 · 1 yr 5 mos · Barcelona, Catalonia, Spain · Remote

• Used a mix of hard coded rules, decision trees and LLM inference to deliver transcription of invoices and receipts at low cost / latency.
• Setup the initial cut of Data Warehouse for the product in Snowflake
• Setup extensive stack and app observability on coralogix.

May 2023 – Oct 2023 · 5 mos · Barcelona, Catalonia, Spain · On-site

• Did ELT on redshift to create datamarts for analytics on user cohorts.

Jan 2021 – Apr 2022 · 1 yr 3 mos · Bengaluru, Karnataka, India

• Designed a Prototype CRM application which provides a unified view of the customer. Design incorporates necessary provisions for data laws like GDPR, Schrems, etc for all types of data from twilio's business associates (BAA) example: PII, critical PII, PHI, social network data etc.

Mar 2019 – Jan 2020 · 10 mos · Bengaluru, Karnataka, India

• Setup scalable ETL and ML pipelines on AWS using Airflow, dask (pandas), Scikit learn, S3 and Redshift to work at 10x the then existing scale.
• Analysed customer retention using survival analysis for prediction of near term company revenue from existing customers.

Oct 2016 – Mar 2019 · 2 yrs 5 mos · Bengaluru, India

• Designed a dynamic schema service (then cutting edge) for protobuf, eliminating build time dependency of applications on protobuf artifacts.
• Designed and built a fast and fault tolerant Kafka to DataLake consumer for Web scale events.
• Improved reliability and introduced clear SLOs for our in-house Apache flink based stream processing platform. This was done by adding thoughtful logic for watermarks, introducing tiered resource pools for flink jobs. This changes enable the usage of flink apps in critical workflows.
• Added social media connection feature to food discovery application in Ruby on Rails.

Jun 2015 – Sep 2016 · 1 yr 3 mos · Bengaluru, Karnataka, India

• Java Spring MVC web-service for mobile application with Spring mongo data.
• Stand-alone Spring context Java PC application backed by web-service with local CouchDB for enhanced offline experience.
• Windows CL library for device driver interaction with i-ball takenote pad.
• PowerShell script based windows service.

Apr 2014 – Apr 2015 · 1 yr · Bangalore, India

• Feature Development on Amazon Product Detail Page.
• Migrated features from pearl backend stack to java spring.
• Worked on a page wide js resource optimization framework.

Nov 2013 – Mar 2014 · 4 mos · Bangalore, India

• Wrote the secure boot driver for the boot-loader for a few new MIPS based Aruba Network Controllers. Also extended the firmware build system to encrypt the firmware as required for the chip’s secure boot feature.
• Troubleshoot system side firmware issues on existing controllers.

May 2013 – Nov 2013 · 6 mos · Bangalore, India

• Enhancing the then existing RTP stack for Voice over LTE (VoLTE)
• Support for RTCP bandwidth control as per RFC 3550.
• Support for variable time-duration audio packetization as per RFC 3550, RFC 4867. NAT keep-alive for RTP session as per 3GPP specification 24.229.
• Modem logging compression for VoLTE module.
• Studied Mobile Broadband Interface Model specifications (MBIM) for USB function driver for LTE.

Apr 2011 – Mar 2012 · 11 mos

• Bring up WiMAX (WiBro) chipset on latest Galaxy devices.
• Troubleshoot critical issues in device driver kernel modules.

Jul 2009 – Mar 2011 · 1 yr 8 mos

• Part of the board bring up on Android phones.
• Fixed execution contention in display driver commands to make the Display more stable.
• Ported Open source ObexFTP into Android with BlueZ stack.

Jun 2009 – May 2013 · 3 yrs 11 mos

• Wrote device drivers for various mobile peripherals such as WiMAX modems, Power Management ICs, GPIO expanders, Infrared LED Blasters, UART and USB switches etc, over the following I/O interfaces: SDIO, I2C, GPIO etc.
• Did performance and power optimizations for the WiMAX driver to ensure high throughput, low latency and low power consumption.
• Did Board bring up of linux kernel on new mobile PCBs.