SUMMARY

Principal Engineer with 20+ years designing high-scale, low-latency distributed systems across Payments, Fintech, Trading, and Telecom. Architect of PayPal's multi-tenant payment platforms used by hundreds of millions of users globally. Deep expertise in reactive systems (RxJava/RxNetty), platform re-architecture, and performance engineering. Led multiple 0→1 initiatives delivering material business impact, including NFC payments in Germany and ML-powered P2P search.

EXPERIENCE

PAYPAL — Principal Engineer

2013 – Present
  • Architect of PayPal NFC (Germany) 0→1 launch — defined architecture, issuer integrations, provisioning/token flows. Scaled platform to 6M+ enrollments, 25M+ TXNs, $700M+ TPV
  • Re-architected traditional P2P search into ML-powered semantic search improving relevance, intent detection, and user recovery. Delivered $70M+ ARR uplift
  • Architected core platforms: Tokenization, TSP, Open Banking, Payment Orchestration
  • Re-platformed payment routing with RxJava/RxNetty → increased throughput 5× and improved tail latency
  • Defined SLAs, performance budgets, API boundaries across multiple business units
  • Led performance engineering initiatives: deep JVM tuning, GC optimization, throughput profiling
  • Mentored engineers across levels; led design reviews, hiring pipelines, Staff-track advancement

SYNIVERSE — Senior Engineer

  • Designed IMN Geo-Redundancy using Oracle Coherence
  • Built distributed sender/receiver state management for SSLSMPPHUB

E*TRADE — Senior Engineer

  • Modernized real-time Buying Power and Confirm Order Processing systems
  • Eliminated systemic JVM memory leaks → significantly improved platform stability

VERIZON / CONVERGYS — Senior Engineer

  • Built MQ-based provisioning systems and mediation adapters for national carriers

EDUCATION

Bachelor of Electronics & Communication Engineering

Osmania University

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Systems Architecture

Design patterns, microservices, distributed systems, and scalable infrastructure patterns.

Architecture

DSA Articles

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Learning track

Fintech

Financial systems, payment processing, risk management, and trading platform architectures.

Finance

AI/ML

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Machine Learning

MCP

Model Context Protocol guides, server templates, debugging recipes, and best practices.

Protocol

Java

Enterprise Java development, Spring Framework, JVM optimization, and modern Java patterns.

Backend

Python

Python development, web frameworks, data science, automation, and scripting best practices.

Programming

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