Senior Software Engineer · PayPal · Austin, TX

Architecting predictive AI for transaction integrity at global scale.

I design the systems that move digital payments from reactive failure-recovery to proactive friction-prevention — predictive architectures serving PayPal's 400+ million active accounts.

Signature work Get in touch
$12M+
annualized TPV recovered
13
peer-reviewed publications
146
citations · h-index 8
2
patent applications
Siva Karthik Parimi
Fusion Award 2025 ML Architecture Excellence · Prague
Featured in Technology.org MSN ABC Money OTS News Today News

01 / Signature Work

Systems that prevent failure before it happens.

Proactive Intelligence Platform

Architect & technical lead — PayPal

Predictive AI system that shifts payment integrity from reactive failure-recovery to proactive friction-prevention. A multi-modal behavioral signal layer feeds an LSTM friction-prediction engine that scores abandonment risk in real time across add-card, checkout, and payment flows; a multi-armed bandit selector deploys the optimal recovery intervention before the transaction fails.

The architecture is the subject of a sole-inventor patent application distinguishing it from prior art held by Google, IBM, and Oracle.

Enterprise Content Management Migration

Architect — PayPal

Complete migration of PayPal's Enterprise Content Management ecosystem from Contentful to an in-house platform of my own architecture — an adapter-pattern framework built from the ground up and transitioned with zero operational downtime. Completed February 2025.

Designated "Architect" in PayPal's internal platform architecture documentation.

02 / Selected Expertise

A decade across the full stack — UI to model layer.

Predictive & Proactive AI
LSTM temporal modeling, multi-armed bandits, ranking and behavior-prediction models, RAG systems, LangChain, feature stores.
Distributed Systems
Java, Spring Boot, microservices, Kafka, Elasticsearch, REST — high-throughput architectures in regulated environments.
Full-Stack Engineering
React, Redux, TypeScript, Node.js — authoring tools and complex UI architecture for global teams.
Cloud & Data Platforms
AWS (Lambda, S3, EC2), Docker, CI/CD with GitHub Actions and Jenkins, BigQuery, Oracle, MySQL.
Observability & Quality
Datadog, structured logging, distributed tracing, performance tuning, A/B testing at production scale.
Architecture Leadership
Architecture reviews, technical direction, cross-functional alignment, mentoring across UI, service, and ML layers.

03 / Experience

Experience

  1. 2021 — Present

    Senior Software Engineer, AI Platforms & Intelligent Systems

    PayPal · Austin, TX

    Architect of the Proactive Intelligence Platform and the ECM ecosystem. Defines technical direction with AI/ML, architecture, product, and legal teams for predictive, user-centric financial experiences.

  2. 2017 — 2021

    Full Stack Engineer, Eligibility & Citizen Systems

    Louisiana Department of Health (Deloitte) · Baton Rouge, LA

    Statewide Medicaid enrollment and eligibility platform serving more than one million residents — secure SAML 2.0 identity flows and inter-agency integrations to state and federal standards.

  3. 2016 — 2017

    Software Engineer, Customer Experience Platform

    Inbiz Concepts · Client: Progressive Insurance · Norwood, MA

    Responsive insurance quote and transaction experiences across the full stack.

  4. 2013 — 2014

    Software Engineer, Claims & Enterprise Applications

    Tata Consultancy Services · India

    Claims-processing modules and scalable components for enterprise workflow systems.

04 / Patents

Two published patent applications.

Sole inventor

System and Method for Predicting Transaction Friction in Digital Checkout Flows Using Behavioral Signals and Proactive AI Recovery

LSTM-based temporal sequence encoder for behavioral friction prediction, multi-modal signal collection, and a multi-armed bandit recovery-intervention selector. Five claims; ten U.S. prior-art patents analyzed and distinguished — including art held by Google, Oracle, IBM, Boku, and C3.AI.

Indian Patent Office · Application № 202641013662 · Filed February 9, 2026 · Published February 20, 2026, Journal 08/2026

Co-inventor

Predictive Friction Detection and Real-Time Recovery Engine for Digital Financial Transaction Workflows

Ensemble analytics across gradient-boosted trees, recurrent networks, and attention-based transformers, with an autonomous real-time recovery engine and continuous online-learning feedback loop. Five claims; ten prior-art references analyzed and distinguished.

Indian Patent Office · Application № 202641014940 · Filed February 11, 2026 · Published February 20, 2026, Journal 08/2026

05 / Research & Publications

13 peer-reviewed publications. 146 citations. h-index 8.

Three papers indexed in IEEE Xplore. Full record on Google Scholar.

IEEE Xplore — conference papers

  1. AI-Assisted Web Platform for Personalized Job Recommendation Using ML Techniques (PERSO-JOBS)ICAAIC · IEEE · 2025
  2. Intelligent Web-Based Student Performance Prediction Using Machine Learning in JavaICAAIC · IEEE · 2025
  3. Leveraging ML for Enhanced User Experience in Web ApplicationsICUIS · IEEE · 2025

Selected journal articles

  1. Data-Governed Autonomous Decisioning: AI Models for Real-Time Optimization of Enterprise Financial Journeys2021 · 23 citations
  2. AI-First Enterprise Architecture: Redefining Web Application Development Through ML-Optimized Processing2022 · 20 citations
  3. Enterprise Risk Intelligence: Applying Machine Learning to Compliance, Fraud, and Operational Risk2023 · 18 citations
  4. Bridging Data, Intelligence, and Trust: AI-Enabled Decisioning for Secure Enterprise Applications2022 · 16 citations
  5. Design and Implementation of a Responsible, Explainable, and Compliance-Driven AI Architecture for Enterprise-Scale CMS2021 · 15 citations
  6. AI-Optimized Full-Stack Governance: Integrating Neural Architectures with Compliance-Driven Enterprise Systems2023 · 14 citations
  7. Proactive AI Systems: Engineering Intelligent Platforms that Sense, Predict, and Act2024 · 12 citations
  8. Generative AI for Enterprise Transformation: From Predictive Decisioning to Autonomous Operations2024 · 11 citations

06 / Book

Published author.

Book cover: Enterprise-Grade Software Engineering in the Digital Economy

Enterprise-Grade Software Engineering in the Digital Economy

Building Scalable Systems across E-commerce, FinTech, and Banking

Co-author — The Research World Publishing House · May 2026

How scalable, secure, and intelligent systems are engineered for the digital economy — cloud-native architecture, microservices, distributed systems, DevOps, and AI-driven automation across e-commerce, fintech, and banking platforms serving millions of real-time users and transactions.

View on Amazon

07 / Speaking & Conference Leadership

Seven invited addresses across three countries.

Every invitation extended by an independent academic committee — none solicited or arranged by an employer.

Keynote addresses

  • IEEE CICN 2023 — 15th Intl. Conf. on Computational Intelligence and Communication Networks · Bangkok
  • WCONF 2024 — World Conference on Communication and Computing · Bhubaneswar
  • IEEE RICE 2025 — 10th Intl. Conf. on Research in Intelligent Computing in Engineering · Hyderabad
  • IEEE ICCETM 2025 — Distinguished keynote · Western Sydney University, Australia

Invited talks

  • WCONF 2023 — World Conference on Communication and Computing · India
  • IEEE MPCON 2025 — Madhya Pradesh Section Conference · Jabalpur
  • IEEE RCSM 2025 — Recent Trends in Computing and Smart Mobility · MANIT Bhopal

Session chair

  • ICDPN 2025 · Prague  ·  ICSSS 2025 · Chennai
  • ISED 2025 · NIT Raipur  ·  MEDCOM 2025 · Greater Noida

Peer reviewer for 46+ papers across ten international venues, 2023–2026 — IEEE CICN, ICSSS, WCONF, ICISCoIS, and others.

08 / Recognition & Press

Recognition

Fusion Award 2025 — ML Architecture Excellence

Awarded at ICDPN-2025, Prague, by a five-member international jury, for contributions to predictive enterprise AI systems architecture.

Fellow — Hackathon Raptors

Elected November 2025 by unanimous vote of the UK-registered fellowship's review panel.

Press

Engineering Proactive Governance-Aligned AI Systems for Regulated Financial Services Technology.org · US · June 2025 ↗ Enterprise Data Foundation Recognized: Fusion Awards in Governance and Analytics ABC Money · UK · November 2025 ↗ US Tech Innovators Dominate Fusion Awards at ICDPN-2025 in Czech Republic OTS News · UK · November 2025 ↗ FinTech Engineering Leaders Sweep Major ML and AI Architecture Honors at ICDPN Today News · UK · November 2025 ↗
How Siva Karthik Parimi is Engineering Proactive AI to Protect Digital Payments at Scale MSN · US

09 / Contact

Open to conversations about predictive AI architecture, enterprise platform engineering, research collaboration, and speaking engagements.

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