Vivek Kumar G.

About Vivek Kumar G.

Senior Software Engineer with 10+ years of experience building and scaling high-performance backend microservices and data platforms at PayPal. Proven leader driving $900K+ annual cloud/data savings, cutting system latencies, and delivering ML/LLM-powered features for millions of users. Patent in GenAI optimization.Expert in Java, Spring Boot, distributed systems, BigQuery/GCP, and AI/ML architecture. Extensively applies GenAI for automation, workflow optimization, and faster development. Passionate about distributed systems, architecture, and problem-solving, with a track record of improving efficiency, scalability, and reliability.

Experience

1. Senior Software Engineer

   PayPal

   Mar 2023 — Present · Bengaluru, IN

   Led team of 8 engineers to build an enterprise-wide AI/ML feature store serving 100M+ daily requests (<10ms P99 latency)- Pioneered Agentic AI integration, automating 80% of feature engineering and accelerating time-to-production- Architected & Productized BigQuery Optimizer Service – Originally a hackathon project, now saving $900K (30%) in execution costs. Led org-wide adoption initiative to maximize impact- Patent- innovation (GenAI-powered BQ optimization); received innovation award- Redesigned System Architecture – Migrated business logic & DB connectivity from a UI-based (Node.js) layer to a microservices-based mid-tier service, improving performance by 22% and eliminating redundancy- GenAI-Powered Migration – Leveraged LLMs (Code Assistants) to streamline migration, reducing development effort by 70% and accelerating delivery- Microservice Development & Performance Optimization – Built an encryption/decryption service, optimized APIs (request submission by 70%, request load by 60%), and parallelized verification for 40% faster runtime. Accelerated TTM – Automated manual workflows, achieving 30% faster time-to-market. Tech Stack: Java, Spring Boot, Hibernate, Oracle, BigQuery, BQ Parser, Python, Docker, UC4, GenAI (Vertex AI, LLMs)#BackendEngineering #GenAI #Microservices #BigQuery #Optimization #PerformanceTuning #SoftwareArchitecture

Education

• National Institute of Technology Raipur

  Bachelor's Degree, Electronics and Communications Engineering

  2011 — 2015

Skills

• Angularjs
• Cascading Style Sheets (Css)
• Javascript
• Web Services
• Mysql
• Spring Mvc
• Html
• Python
• Javaserver Pages (Jsp)
• Bootstrap
• Java