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Rajat Mittal

Building Payments at PhonePe | Purdue University

Bengaluru

9+ years of work experience

PhonePe
Jan 20233 y 7 moPresent

Bengaluru, Karnataka, India

• Led a payment core team of over 10 engineers, focusing on roadmap planning and sprint management. • Coordinated end-to-end timelines, ensuring technical strategy alignment and effective team mentoring. • Developed systems for efficient queuing, sharding, and storage across PhonePe's infrastructure. • Utilized technologies such as Kafka, Dropwizard, and Aerospike to enhance scalability for 500 million users.
Twilio
Oct 20211 yr 4 mosJan 2023

Chicago, Illinois, United States

- Worked with Edge Platforms team to develop next gen rate limiting and DDoS prevention solutions - Microservices run at a high scale of 10 billion API calls per week and average p99 latency < 50ms - Gained proficiency in using Java Dropwizard and Gunicorn Python WSGI HTTP Servers - Used modern frameworks like gRPC and Envoy for speeding up service to service communications - Initiated deployments using Terraform Infrastructure-as-a-code. - Led a project for developing internal document store service used by several internal teams. - Proficiency in using different AWS and GCP cloud services like BigQuery, Kinesis, DynamoDB, ASG - Docker and Kubernetes for containerization efforts
Yahoo
Nov 20192 yrsOct 2021

Urbana-Champaign Area

- As a part of the traffic protection team worked on developing advertisement fraud prevention microservices. - Data analysis scripts written in Python to analyze terabytes of data data using PySpark. - Additionally Hadoop, HDFS, Spark, Presto, Pig, Hive for data processing and warehousing - Java Jetty for microservices development with sub millisecond response times - Deployed Machine learning models in production
Purdue University
Sep 20184 mosDec 2018

Wipro
Jun 20162 yrsMay 2018

Pune/Pimpri-Chinchwad Area

* Used TensorFlow and OpenCV in Python with mini-batch gradient descent to train a nerve cell image classifier for client * Wipro STAR award for work done on Particle analysis module which used a combination of edge detection algorithms, morphology operations, and high school geometry to infer physical properties of an object

Rajat’s AI Stack

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Education

Purdue University

Master of Science - MS

Purdue University

20181 yr2019
National Institute of Technology Karnataka

Bachelor of Technology - BTech, Electrical and Electronics Engineering

National Institute of Technology Karnataka

20124 yrs2016

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Headline

Building Payments at PhonePe | Purdue University

About

* Expertise in all things technical on UPI, PPI, PA, PG. * Built payments products and systems used by 200+M users daily. Find me on Topmate: https://topmate.io/rajat_mittal10/page/IknSUyqPF9 Always, on the look out for new and exciting opportunities!

Location

Bengaluru

AI stack

claude code

codex

github copilot

hugging face

langchain

n8n

Work experience

Senior Software Engineer at PhonePe, Jan 2023 - Present · 3 y 7 mo, Bengaluru, Karnataka, India, • Led a payment core team of over 10 engineers, focusing on roadmap planning and sprint management. • Coordinated end-to-end timelines, ensuring technical strategy alignment and effective team mentoring. • Developed systems for efficient queuing, sharding, and storage across PhonePe's infrastructure. • Utilized technologies such as Kafka, Dropwizard, and Aerospike to enhance scalability for 500 million users.

Senior Software Engineer at Twilio, Oct 2021 - Jan 2023 · 1 yr 4 mos, Chicago, Illinois, United States, - Worked with Edge Platforms team to develop next gen rate limiting and DDoS prevention solutions - Microservices run at a high scale of 10 billion API calls per week and average p99 latency < 50ms - Gained proficiency in using Java Dropwizard and Gunicorn Python WSGI HTTP Servers - Used modern frameworks like gRPC and Envoy for speeding up service to service communications - Initiated deployments using Terraform Infrastructure-as-a-code. - Led a project for developing internal document store service used by several internal teams. - Proficiency in using different AWS and GCP cloud services like BigQuery, Kinesis, DynamoDB, ASG - Docker and Kubernetes for containerization efforts

Software Development Engineer at Yahoo, Nov 2019 - Oct 2021 · 2 yrs, Urbana-Champaign Area, - As a part of the traffic protection team worked on developing advertisement fraud prevention microservices. - Data analysis scripts written in Python to analyze terabytes of data data using PySpark. - Additionally Hadoop, HDFS, Spark, Presto, Pig, Hive for data processing and warehousing - Java Jetty for microservices development with sub millisecond response times - Deployed Machine learning models in production

Graduate Teaching Assistant at Purdue University, Sep 2018 - Dec 2018 · 4 mos

Software Engineer at Wipro, Jun 2016 - May 2018 · 2 yrs, Pune/Pimpri-Chinchwad Area, * Used TensorFlow and OpenCV in Python with mini-batch gradient descent to train a nerve cell image classifier for client * Wipro STAR award for work done on Particle analysis module which used a combination of edge detection algorithms, morphology operations, and high school geometry to infer physical properties of an object

Education

Master of Science - MS, Purdue University

Bachelor of Technology - BTech, Electrical and Electronics Engineering, National Institute of Technology Karnataka