Summary
Overview
Work History
Education
Skills
Websites
Certification
Timeline
Generic

Usman Kunnath

Chennai

Summary

Staff Engineer with 13 years of experience in Data Engineering and Machine Learning within the financial sector. Proven ability to collaborate with executives to design and implement scalable systems using Big Data technologies and Google Cloud Platform. Expertise in all phases of the Software Development Life Cycle. Successful in deploying end-to-end ML models and optimizing data pipelines to enhance data-driven decision-making.

Overview

13
13
years of professional experience
1
1
Certification

Work History

Member of Technical Staff / Engineering Manager 1

PayPal
Chennai
04.2022 - Current
  • Sales Recommendation Engine: Built GenAI + fuzzy matching algorithm to map soft descriptors to merchant names, improving sales outreach.
  • Dev Docs (GenAI): Architected GPT-4 integrated web data pipeline to help merchants with PayPal product integration.
  • Product Recommendation: Implemented ML tree-based model for personalized PayPal product recommendations with explainability.
  • Boomerang (Patented): Created utility to detect/react to behavioral intent, improving user experience and conversion.
  • Device Fingerprinting: Implemented similarity search using fingerprinting attributes to identify non-logged-in PayPal users.
  • ACDC Pre-Enablement: Developed feature to auto-identify eligible merchants for pre-approval, reducing time-to-market
  • Transaction Reminder: Designed system to re-engage users with abandoned carts via coupon-enabled reminders.
  • Echo: Built pattern detection engine to classify subscription behavior (e.g., frequency/amount patterns) from transaction history.
  • DP Image Upgrade: Led DataProc image upgrades across projects, enhancing performance and compatibility.

Senior Engineer

American Express
04.2018 - 04.2022
  • iSolveis robotic solution to analyze the events in the Marketing & Personalization eco system and provide quick insights to the Marketing / Engineering teams for the best viable solution for a given event.
  • Scoring Platform is a recommendations engine which show card members with relevant offers and merchants. The application helps card members to get more out of the places they visit usually and shows them new places to discover based on their card usage. The project utilizes Hadoop Big Data cluster to manage and perform analytics on customer, merchants and offer information and to provide top recommendations based on real time calculated scores

Engineer

American Express
02.2013 - 04.2018
  • MIRA (Preformation Data Stabilization):Integrated within the MIRA application, this module provides a comprehensive view of merchant financials, performance, and revenue targets. Utilized by American Express teams and client managers for data-driven business decisions across monthly, quarterly, and annual revenue cycles
  • GMAR (Global Merchant Analytics & Reporting):A global data warehouse integrating financial and non-financial merchant data across markets, serving as the foundation for Amex analytics, BI, and product strategies. Enables trend analysis by linking transaction and merchant data, supporting campaign execution and strategic insights with enriched internal and third-party data
  • Mystic Platform: A highly customized analytics and reporting solution supporting business insights and campaign execution. Leverages internal and third-party data to power the Global Closed Loop (GCL) advantage, enabling deeper linkage between cardmembers and merchants for strategic engagement

Programmer

American Express
Chennai
12.2011 - 02.2013
  • Global Banking is a collection of applications for the banking system of American Express users to perform their day-to-day operations consist of money movement, regulation & Operational applications.

Education

Bachelor of Engineering - Computer Science and Engineering

Anna University
Chennai, Tamil Nadu
04.2011

Skills

  • GenAI technologies: Parser, OpenAI models, Gemini models
  • Big data technologies: Hadoop, Apache Hive, Apache Tez, Apache Spark, PySpark, Kafka, Sqoop
  • Cloud technologies: Google Cloud DataProc, BigQuery, GCS, Cloud Functions
  • CI/CD tools: Jenkins, GitHub, Docker
  • Developer tools: PuTTY, Maven
  • Scheduling tools: Airflow, UC4, Event Engine, Control-M
  • Operational tools: ServiceNow, Splunk
  • Product delivery methodologies: Agile, SAFe, JIRA
  • Frameworks and programming languages: REST APIs, Python, Scala, Java, and Shell Scripting
  • Databases: Vector databases, Graph databases, BigTable, BigQuery, Apache HBase, Elastic Search, MySQL, Netezza

Certification

  • Google Cloud Certified Associate Cloud Engineer
  • Databricks Certified Associate Developer for Apache Spark 3.0
  • PCAP Certified Associate in Python Programming: Python Institute
  • IBM Info Sphere Data Stage V11.3: IBM
  • ITIL Foundation Certificate in IT Service Management: EXIN

Timeline

Member of Technical Staff / Engineering Manager 1

PayPal
04.2022 - Current

Senior Engineer

American Express
04.2018 - 04.2022

Engineer

American Express
02.2013 - 04.2018

Programmer

American Express
12.2011 - 02.2013

Bachelor of Engineering - Computer Science and Engineering

Anna University

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Usman Kunnath