Summary
Overview
Work History
Education
Skills
Timeline
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Harbhajan Singh

Frederick,MD

Summary

Results-driven Senior Software Engineer with extensive experience in AWS architecture and microservices. Achievements include scaling production capacity from 50k to 100k units weekly and reducing system latency by 30%, delivering high-impact solutions that enhance operational efficiency. Proven ability to mentor engineers while fostering a culture of innovation.

Overview

15
15
years of professional experience

Work History

Senior Software Engineer

Amazon
11.2020 - Current
  • Architected and delivered Atom Orders Service and Hardcover Convergence initiatives, transforming stalled multi-year roadmap items into production systems serving 5+ manufacturing cells
  • Led cross-functional teams of 6+ engineers across multiple organizations to deliver critical manufacturing systems, scaling hardcover production capacity from 50k to 100k books per week
  • Optimized manufacturing system performance by 30%, reducing Finalize latency from 1.2s to 0.87s and eliminating 500,000+ redundant API calls daily
  • Built AWS EC2 Instance Connect control plane handling 100k+ daily connections across 32 regions, saving customers $0.5M annually while improving security posture
  • Designed distributed systems solutions for complex manufacturing workflows, implementing asynchronous APIs and rate limiting systems that simplified multi-team integration
  • Developed innovative testing infrastructure reducing pipeline execution time by 67% (45 to 15 minutes) and improving deployment efficiency by 60%
  • Co-created AWS BYOIP Anycast feature, enabling users to publicize IP addresses across regions, which strengthened network stability and improved location-based backups.
  • Designed and implemented integration between AWS IP Address Manager (IPAM) and BYOIP service, creating a unified platform for streamlined IP address management across the AWS infrastructure
  • Engineered WASM/React-based SSH functionality for AWS EC2 Console, delivering seamless and secure instance access while improving the user experience

Senior Software Engineer

Good Eggs
08.2020 - 11.2020
  • Architected and implemented GraphQL resolver layer using NodeJS, enabling efficient data handling and optimizing API performance with improved query resolution
  • Implemented Storybook integration for React-Native application, streamlining component development and enhancing UI consistency, resulting in faster development cycles
  • Mentored junior engineers on coding best practices and software development methodologies.

Lead Software Engineer

Vistaprint
05.2013 - 08.2020
  • Led cross-functional teams in UX enhancement initiatives, improving user engagement metrics by implementing user-centered design principles.
  • Architected and implemented a microservices-based translation management system, streamlining workflows and enhancing operational efficiency across teams
  • Engineered a robust CI/CD pipeline using Kubernetes and Jenkins, accelerating deployment cycles and reducing time-to-production for critical updates
  • Successfully executed a large-scale migration of legacy infrastructure to the AWS cloud platform, ensuring zero downtime and maintaining system performance standards
  • Spearheaded mentorship program for novice developers, providing technical guidance and best practices, enhancing team code standards and collaboration.

Software Engineer

Laureate Education
06.2011 - 05.2013
  • Developed educational web app to enhance student online experience.
  • Created migration system for MongoDB updates to maintain data integrity.
  • Developed and maintained code repositories using version control systems effectively.

Education

BS - Computer Engineer

University of Maryland Baltimore County
Baltimore, MD
01-2012

Skills

  • Microservices architecture
  • API design
  • Java
  • NodeJs
  • Kotlin
  • Javascript
  • TypeScript
  • React
  • GraphQL
  • Spring
  • AWS
  • Cloud design
  • CI/CD development
  • CI/CD
  • Kubernetes
  • Docker
  • MongoDB
  • DynamoDB
  • Postgres
  • ElasticSearch
  • Redis
  • Testing integration
  • Agile practices
  • Team leadership
  • Cross-team collaboration
  • AWS design
  • API design

Timeline

Senior Software Engineer

Amazon
11.2020 - Current

Senior Software Engineer

Good Eggs
08.2020 - 11.2020

Lead Software Engineer

Vistaprint
05.2013 - 08.2020

Software Engineer

Laureate Education
06.2011 - 05.2013

BS - Computer Engineer

University of Maryland Baltimore County
Harbhajan Singh