Perminder Singh

About Perminder Singh

I\'m a Principal Software Engineer with 10+ years of experience building scalable backend systems across Healthcare, Fintech, Compliance, Logistics, and E-commerce — currently at Oracle.At Oracle Health, I lead data engineering for a healthcare scorecard platform — designing distributed ETL pipelines that process up to 1TB of data, driving a large-scale migration from AWS to OCI, and currently architecting the decomposition of a monolithic Hadoop pipeline into a modern Spark-based system. I lead a team of 4-5 engineers and own technical decisions end to end. More recently, I\'ve been deliberately expanding into AI-powered backend engineering. I\'m building production-grade AI APIs using Spring Boot and LangChain4j — with a focus on observability, token cost tracking, resilience patterns, and structured output. My goal is to bring the same engineering rigour I apply to backend systems to AI systems.Outside of work, I\'m building a specialized AI tool in the accounting and finance space — focused on solving a workflow that currently takes experienced professionals 4-5 hours per engagement, down to minutes. Core stack: Java • Spring Boot • Python • Go • Kafka • Postgres • MongoDB • Redis • Elasticsearch • LangChain4j • gRPC Always open to conversations with engineers and leaders working at the intersection of backend systems and AI.

Experience

1. Principal Member of Technical Staff

   Oracle

   Feb 2025 — Present

   Leading the decomposition of a large-scale monolithic Hadoop pipeline into a distributed Spark-based architecture, designing end-to-end solution across multiple services used by cross-functional teams — targeting significant reduction in pipeline execution time via on-demand Spark clusters processing 100s of GBs to ~1TB of data* Spearheading AWS to OCI cloud migration for data processing services, owning technical design and delivery end to end* Implemented MIPS Value Pathways (MVP), a full end-to-end feature addition to the healthcare scorecard pipeline, from design through delivery.* Managed and maintained ETL pipelines and data processing services responsible for healthcare scorecard generation, including bug fixes and operational stability.* Leading a team of 4-5 engineers across multiple concurrent projects, owning technical decisions and delivery.

Education

• DUCAT

  Professional Training, JAVA

• Maharaja Surajmal Institute Of Technology

  Bachelor's Degree, Information Technology

  2012 — 2015

• Guru Tegh Bahadur Polytechnic Institute

  Ploytechnic Diploma, Computer Engineering

  2008 — 2011

Skills

• Elasticsearch
• Algorithms
• Ielts
• Scala
• Operating Systems
• Spark
• Reverse Engineering
• C
• Programming
• Powerpoint
• Databases
• Google Cloud Platform
• Java Enterprise Edition
• Software Design
• Redis
• Celery
• Avro
• Mysql
• Software Development
• Python
• Sql
• Apache Zookeeper
• Linux
• Google App Engine
• Big Data
• Performance Tuning
• Apache Spark
• Java
• Hadoop
• Rabbitmq
• Mongodb
• Amazon Web Services (Aws)
• Research
• Mapreduce
• Apache Kafka
• Android