Hey 👋 I’m a computer science graduate student at Dalhousie University, a budding illustrator, and previously a backend engineer at Walmart’s PhonePe and YC ClearTax, here to share my experiences, tutorials, and projects.

Skills

• Programming languages: Java, Javascript and Python

• Databases: MySQL, MongoDB, AeroSpike, ElasticSearch, Redis, AWS Redshift, Athena

• Frameworks: Dropwizard, Django, Flask, Angular, Ionic

• CI/CD: Jenkins, Spinnaker, Docker, Terraform, Gitlab CI, Marathon and Mesos

• Other Technologies: Hadoop-ecosystem, Amazon Web Services, RabbitMQ, Apache Kafka

Featured Projects

• Topology/shape preserved world cartogram: pyblog.xyz/population-cartogram

• Hybrid Spatial Data Structures: github.com/addu390/hybrid-spatial-index

• Licensing as a Platform: github.com/addu390/licensing-as-a-platform

Work History

Google Summer of Code Contributor; Google OSS, Our World in Data; Halifax, NS (2022-05 - Present)

• Working on building a shape/topology preserved population-scaled world cartogram to better visualize the effect and gravity of metrics such as world hunger and poverty.

• Proposal: https://www.pyblog.xyz/gsoc-2022; Prototype: https://www.pyblog.xyz/population-cartogram

Teaching Assistant & Marker - CSCI 5308 Advanced Topics in Software Development; Dalhousie University, Halifax, NS (2022-04 - Present)

Teaching Assistant & Marker - CSCI 4118/6105 Algorithm Engineering; Dalhousie University, Halifax, NS (2021-12 - 2022-04)

• Developed lab instructions relevant to the topics covered in the class to put theory into practice in the real world, such as the effect of rounding errors in geometric algorithms.

• Conducted weekly labs and office hours to assist with lab procedures and assignments for a class of 25 students. Followed by marking the assignments with feedback covering areas of improvement and strengths.

Computer Science Tutor; SuperProf, Halifax, NS (2021-10 - 2021-12)

• Subject(s): CSCI 3110 - Design and Analysis of Algorithms.

• I closely worked with 3 students to improve their hold on Data Structures and Algorithms. But, with all honesty, it was a 2-way street, where I learned a lot too, both DSA and effective communication.

Software Engineer; PhonePe Private Limited (Acquired by Walmart), Bengaluru, India (2019-12 - 2021-07)

• E-Nach (Automated Payment Services): Developed the Systematic Investment Plan (SIP) feature to schedule automated payments through E-Nach and UPI mandates or set-up reminders for investments, and handle over 1.2 lakh transactions per day.

• Know Your Customer (KYC) Verification: Rewrote KYC submission state-machine for user identity verification by parsing proof documents such as Drivers License, Aadhar Card, and Bank Statements, along with a selfie video verification which reduced false negatives from 4% to 0.3%

• Platformization: Built a Dropwizard framework to enable dynamic screens with serverdriven UI, thereby taking away the need for frequent mobile application releases and extended the project to facilitate A/B testing

• User Personalization: Developed a lightweight rules engine to evaluate conditions and execute actions based on user profile and activity, resulting in a ~45% increase in conversion to invest in systematic plan schemes.

Software Engineer II; Clear (Formerly ClearTax), Bengaluru, India (2018-07 - 2019-12)

• Load Test Framework: Developed a framework to capture and replay HTTP traffic at a higher speed in a test environment and published performance results to Grafana and Spinnaker dashboards, reducing the set-up time from >60 minutes to ~10 minutes

• Parallel Test Framework: Reduced test execution time from 65 minutes to ~14 minutes using Jenkins and AWS Spot Fleet with ANT scripts to aggregate test results, reducing deployment time and cost from $300 to $20 a month.

• ETL (Extract, Transform, and Load) Pipeline: Set up a pipeline to combine data across multiple database shards by streaming MySQL bin logs using Kafka, leading to a 60%+ improvement in query-time.

• Database Sharding Bundle: Developed a Java Dropwizard library for application-level horizontal sharding for relational databases, with support for atomicity of transactions, handling nested UnitOfWork, and checkpointing.

• Xander: Built a wrapper around simple workflows (AWS SWF) with a decision layer for APIs to be synchronous or asynchronous, reducing failure rate from ~20% to NIL.

• Licensing as a Service: Developed a service for monetizing and limiting user exploitation of the application utilizing Python Django to float the application and Redis for database caching.

Full Stack Developer Intern; Techleet Infosystems, Bengaluru, India (2017-11 - 2018-07)

• Ribbn (Uber for Ambulance): Developed an Ionic-Angular-Django application to book an ambulance and fulfill post-hospitalization services such as doctor’s consultation and home-nursing along with location analytics for efficient fleet management and cost optimization.

• Xeta Logistics: Built a logistics billing and goods tracking application with provision for GST E-way bill generation leveraging Laravel-Angular and Computer Vision techniques for text extraction and redaction of documents.

Education

• Master of Applied Computer Science, Dalhousie University - Halifax, NS 🇨🇦

• Bachelor of Engineering: Electronics And Communication, Visvesvaraya Technological University - Karnataka, India

Accomplishments

• Successfully completed the Dal Innovates Collide - Exploring Entrepreneurship (Mentorship Program)

• Won the “Halifax Innovation Challenge, Extra Mile Award” sponsored by RBC and IBM.

• Certified in “Business Communications for Researchers” by Path2Innovation.

• Rated as ‘Exceptional Performer’ (July 2020 and April 2021) at PhonePe and ‘Out Performer (OP)’ in the performance reviews at ClearTax (October 2018 and April 2019).

• Founding member of Youth for Parivartan - Clean India Mission and active member of Kidwai Memorial Institute of Oncology - Cancer Care.