Experience

Shifthive
• United States
• Technology, Information and Internet
• 1 - 100 Employee
• Advisor

  • Mar 2019 - Present


DoorDash

• United States
• Software Development
• 700 & Above Employee

• Staff Software Engineer

  • Jun 2021 - Oct 2023

  San Francisco Bay Area Helped the DashPass team (~25 members) scale by spearheading the adoption of new technologies and best practices. Developed tech vision and led the transformation of a hard-to-maintain codebase into a modular, scalable platform. * Integrated Cadence to streamline partnership integrations, expediting the financial partnership process. https://doordash.engineering/2022/05/18/enabling-faster-financial-partnership-integrations-using-cadence/ * Adopted a functional testing framework to… Show more Helped the DashPass team (~25 members) scale by spearheading the adoption of new technologies and best practices. Developed tech vision and led the transformation of a hard-to-maintain codebase into a modular, scalable platform. * Integrated Cadence to streamline partnership integrations, expediting the financial partnership process. https://doordash.engineering/2022/05/18/enabling-faster-financial-partnership-integrations-using-cadence/ * Adopted a functional testing framework to improve code coverage and software quality. https://doordash.engineering/2022/11/01/how-to-boost-code-coverage-with-functional-testing/ * Established and refined key engineering processes including on-call protocols, design reviews, coding standards, and architectural guidelines. * Led a multi-quarter initiative to re-architect DashPass's core business logic into a plug-in-based platform, significantly enhancing engineering speed, code quality, and system reliability. * Developed a robust, multi-layered caching library in Kotlin to optimize DashPass's backend performance, a solution later adopted across multiple teams and services within DoorDash. Show less



AptEdge

• United States
• Software Development
• 1 - 100 Employee

• Founding Engineer

  • Jul 2019 - Mar 2021

  San Francisco Bay Area • Developed and scaled a B2B product from scratch for an early-stage startup with 7 engineers and paying clients. • Architected and implemented multi-tenant backend; collaborated with the frontend team on the majority of APIs. • Drove adoption of the on-call and post-mortem processes. Implemented and maintained the majority of the instrumentation and application metrics, leading to a reduction in issue response and resolution time. • Spearheaded user-friendly and fool-proof… Show more • Developed and scaled a B2B product from scratch for an early-stage startup with 7 engineers and paying clients. • Architected and implemented multi-tenant backend; collaborated with the frontend team on the majority of APIs. • Drove adoption of the on-call and post-mortem processes. Implemented and maintained the majority of the instrumentation and application metrics, leading to a reduction in issue response and resolution time. • Spearheaded user-friendly and fool-proof engineering tools for deployment, testing, profiling, etc. • Worked with ML specialists to productionize and scale ML algorithms, boosting the performance of prototypes by orders of magnitude. Show less



Leanplum

• United States
• IT Services and IT Consulting
• 1 - 100 Employee

• Staff Software Engineer

  • Apr 2019 - Jul 2019

  Helping Leanplum engineering grow and evolve.

• Senior Software Engineer

  • Jun 2017 - Apr 2019

  San Francisco Bay Area • Mitigated, patched and re-architected high traffic and mission critical systems. • Data/cache consistency issues. • Boosted external API uptime from < 95% to > 99.9% • Prevented end-of-the-world fires while lowering costs and boosting performance. • Developed and promoted data-driven release and profiling methodology for Google AppEngine. • Created tool that can scrape different metrics sources and compute impact on key metrics between different… Show more • Mitigated, patched and re-architected high traffic and mission critical systems. • Data/cache consistency issues. • Boosted external API uptime from < 95% to > 99.9% • Prevented end-of-the-world fires while lowering costs and boosting performance. • Developed and promoted data-driven release and profiling methodology for Google AppEngine. • Created tool that can scrape different metrics sources and compute impact on key metrics between different versions. • Profiled various optimizations, as well as canaries for release process to prevent regressions. • Helped to develop Campaign Composer, a complete overhaul of our dashboard: https://www.leanplum.com/blog/campaign-composer-intro/ • Vastly optimized and improved previews of both realtime and push/email messages. • Mitigated and solved data consistency and scalability issues.



Reddit, Inc.

• United States
• Software Development
• 700 & Above Employee

• Software Engineer

  • Mar 2016 - Apr 2017

  San Francisco Bay Area As part of Anti Evil team: • Built Alternative Account tracker capable of tracking and querying large number of Reddit user accounts as potential alternatives in near real time. Used heavily by Trust & Safety team to keep Reddit safe and civil by proactively punishing people for ban evasion. • Built Trusted Users feature, allowing users to choose who can private message them - http://bit.ly/2mwXe9I • Fixed and instrumented Reddit’s email service and migrated all legacy mail… Show more As part of Anti Evil team: • Built Alternative Account tracker capable of tracking and querying large number of Reddit user accounts as potential alternatives in near real time. Used heavily by Trust & Safety team to keep Reddit safe and civil by proactively punishing people for ban evasion. • Built Trusted Users feature, allowing users to choose who can private message them - http://bit.ly/2mwXe9I • Fixed and instrumented Reddit’s email service and migrated all legacy mail servers to a third-party. • Built software to analyze Reddit's user base against password dumps. • Built software to surface weak passwords via brute force attacks. • Built bulk-action tools to require password resets en-masse for accounts deemed to be vulnerable or taken over. • Built timeout appeal feature that enables administrator to choose whether to allow users to appeal their timeout. If appeal is accepted, user’s timeout automatically lifts. Show less



LinkedIn

• IT Services and IT Consulting
• 1 - 100 Employee

• Senior Software Engineer

  • Dec 2013 - Mar 2016

  Mountain view I work with the Search Apps team. Currently doing a lot of backend work, while previously having done a lot of flagship Android app work. • Technical lead for a new backend service used to track user's search history in real time. Authored 95% of the source code. • Search history service processes ~100k messages per second on average with 250k peaks. Rest endpoint provides low latency history for a particular member, used in new Android/iOS apps. • Rewrote most of search code… Show more I work with the Search Apps team. Currently doing a lot of backend work, while previously having done a lot of flagship Android app work. • Technical lead for a new backend service used to track user's search history in real time. Authored 95% of the source code. • Search history service processes ~100k messages per second on average with 250k peaks. Rest endpoint provides low latency history for a particular member, used in new Android/iOS apps. • Rewrote most of search code for the flagship Android application to fix major bugs, introduce unit-testing, build new features and optimize user experience by making the app faster. • Implemented new search features and optimized mobile front-end server written in Javascript (NodeJS). • Mentored 5 people in Android development. Each person delivered a feature or a bug fix accompanied by a unit test. • Fixed numerous bugs for desktop search frontend services. Formerly Software Engineer. Show less



Amazon

• Bangladesh
• Advertising Services
• 1 - 100 Employee

• Software Development Engineer

  • Apr 2012 - Oct 2013

  Seattle, Washington I worked on the Last Mile team which has since become part of Amazon Fresh. Our team made software used in delivery stations for tracking package states and by delivery associates via Android app. I worked along the entire stack, from the database to the logistics to the UI. • Developed and supported software for managing shipments, employees, and collecting operational data in TBA (Transportation By Amazon) system. • Designed and implemented Role Based Access Control (RBAC) for… Show more I worked on the Last Mile team which has since become part of Amazon Fresh. Our team made software used in delivery stations for tracking package states and by delivery associates via Android app. I worked along the entire stack, from the database to the logistics to the UI. • Developed and supported software for managing shipments, employees, and collecting operational data in TBA (Transportation By Amazon) system. • Designed and implemented Role Based Access Control (RBAC) for the stack (website, backend) by integrating with an existing RBAC webservice. • Created new features for our Android application used by Delivery Associates. • Created utilities and libraries that are used by several environments and teams. • Created a webpage and large part of the backend for collecting and reporting Delivery Associate trip information. • Mentored three interns, all of whom were hired full time. Show less



Think-A-Move

• United States
• Software Development
• 1 - 100 Employee

• Software Developer Intern

  • Jun 2010 - Apr 2012

  I spent 3 months onsite and worked remotely for the rest. • Developed a set of new features and modules for the speech recognition engine and integrated them into main code base. • Implemented an efficient language model generation tool. • Implemented a parser for regular expressions that outputs a minimized finite graph, used directly by the speech recognition engine to define a domain of sentences to be recognized. • Designed and implemented machine learning experiments to… Show more I spent 3 months onsite and worked remotely for the rest. • Developed a set of new features and modules for the speech recognition engine and integrated them into main code base. • Implemented an efficient language model generation tool. • Implemented a parser for regular expressions that outputs a minimized finite graph, used directly by the speech recognition engine to define a domain of sentences to be recognized. • Designed and implemented machine learning experiments to tune the engine/module's parameters for optimal accuracy. • Implemented a GUI application used for collecting training data and live testing. Show less



Ohio University

• United States
• Higher Education
• 700 & Above Employee

• Research Assistant for Bio Informatics Group

  • Jan 2010 - Jun 2010

  I am one of the coders for the WordSeeker project. The WordSeeker project provides an enumerative motif discovery approach combined with several post-processing capabilities in order to create a regulatory genomic signature workbench. I implemented efficient data structure (generalized SuffixTree) for WordSeeker project for fast queries into large genomic data sets. WordSeeker is implemented using C++, and on top of implementing SuffixTree, I helped with optimizing and… Show more I am one of the coders for the WordSeeker project. The WordSeeker project provides an enumerative motif discovery approach combined with several post-processing capabilities in order to create a regulatory genomic signature workbench. I implemented efficient data structure (generalized SuffixTree) for WordSeeker project for fast queries into large genomic data sets. WordSeeker is implemented using C++, and on top of implementing SuffixTree, I helped with optimizing and implementing other parts, such as fast filtering of input data and efficient sequence representation. Show less



VeriSign

• United States
• Technology, Information and Internet
• 700 & Above Employee

• Intern

  • Jun 2009 - Aug 2009

  I worked on a new proof of concept project. I developed a webservice client for performing various PKI operations, such as certificate enrollment, renewal, revoke, suspend, etc. As part of that I also developed a Crypto Library for generating various PKCS messages, key pairs, parsing X509 Certificates, etc. I learned: * PKI. How it works, and how it can be implemented * X509 Standard * PKCS 10, 7, 12 * BouncyCastle library * Axis2 wsdl2java tool *… Show more I worked on a new proof of concept project. I developed a webservice client for performing various PKI operations, such as certificate enrollment, renewal, revoke, suspend, etc. As part of that I also developed a Crypto Library for generating various PKCS messages, key pairs, parsing X509 Certificates, etc. I learned: * PKI. How it works, and how it can be implemented * X509 Standard * PKCS 10, 7, 12 * BouncyCastle library * Axis2 wsdl2java tool * ASN syntax, DER encoding * Tomcat Webserver Show less

• Research Assistant

  • Jan 2009 - Jun 2009

  I worked in VITAL lab on Smithsonian Virtual Latino Museum, and also SecondWATCH project.

• Undergraduate Research

  • Jun 2008 - Aug 2008

  Developed software for scientific volume visualization.