HARNOOR SINGH

Software Engineer • AI/ML • Mobile Dev • YouTuber (1M+ Subs)

Built intelligent systems at Microsoft Security | 1M+ YouTube subscribers on Singh in USA

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Harnoor Singh
✨ Open to opportunities
📍 San Francisco

ABOUT_ME

🎓 Education

Georgia State University

BS & MS in Computer Science

summa cum laude | GPA: 4.0

2016 - 2020

💼 Previous Role

Microsoft Corp.

Software Engineer

AI/ML & Mobile Engineering

Atlanta, GA

🎥 Creator

Singh in USA

YouTube Channel

1M+ Subscribers

Tech & Podcast

WORK_I'M_PROUD_OF

I'm a builder who thrives in early-stage, ambiguous environments. I like owning problems end-to-end—going from a vague idea to something real that people actually use. Speed, judgment, and quality all matter.

💡 Core Principle

"With AI, we can not just get work done, but also make it testable and observable. That combination is magical."

🎯 What Drives Me

End-to-end ownership • Early-stage ambiguity • Tools that enable ecosystems • Developer experience over hype

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Shipped Under Pressure

NCR Voyix • 1 Month Timeline

Delivered complex Android POS UI for major customers like Waffle House in a tight 1-month deadline. Product served thousands of locations nationwide.

Android Production High Stakes
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RAG from Scratch

Microsoft Security • End-to-End

Built production RAG system with Vector DB for security test automation. Owned full pipeline: retrieval, generation, verification, and C# test coverage. Made AI testable and observable.

RAG Vector DB C# Testing
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Vibe Coded Recommendation System

Personal Project • AI-Powered

Built intelligent content filter for Twitter/Instagram showing only competitive coding trends and projects. Keeps me competitive while cutting noise.

ML Content Filtering Fast Iteration
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AI Tools & Rapid Prototyping

Creator Workflow • Multiple Apps

Vibe coded series of AI apps with thumbnail and caption generation features. Replaced expensive creative software with custom-built tools. Learning new stacks from scratch and shipping fast.

AI Tools Claude Code Rapid Shipping

WORK_EXPERIENCE

Microsoft Corp.

Software Engineer

Atlanta, GA July 2022 – April 2025

🤖 AI / Applied ML (Microsoft Security)

  • Architected and implemented AI-driven query translation (NL2KQL) using Vector Databases and RAG pipelines, enabling natural-language security analytics
  • Owned end-to-end design, implementation, and validation of AI-enhanced workflows with security engineers and PMs
  • Led experimentation and prompt optimization strategies to improve query accuracy in production
  • Tech Stack: LLM APIs, RAG Pipelines, Vector Databases, NL2KQL, Security Analytics

📱 Mobile Engineering / Platform (Microsoft Defender)

  • Led design of end-to-end native test frameworks for Android and iOS, doubling release velocity (2× faster)
  • Built native mobile testing infrastructure, reducing production regressions across multiple releases
  • Integrated testing pipelines into CI/CD workflows
  • Tech Stack: Android, iOS, Native Testing, CI/CD

🎨 Cross-Functional / Developer Advocacy

  • Partnered with Microsoft Designer team on go-to-market strategy and technical marketing content for YouTube channel (1M+ subscribers)

NCR (National Cash Register)

Software Engineer

Atlanta, GA July 2020 – July 2022
  • Contributed to NCR Silver POS Android app with 1M+ LOC codebase spanning 19 modules
  • Served as Atlanta team lead and Scrum Master coordinating 11 engineers and QA members
  • Engineered production features using Dagger2, RxJava, Kotlin Multiplatform, and C++
  • Designed testing frameworks using Espresso, Mockito, and JUnit, reducing post-release defects
  • Technical interviewer and campus recruiter

Panasonic Automotive

Systems Engineering Intern

Peachtree City, GA May 2017 – May 2018
  • Built Android-based infotainment simulation app, reducing developer onboarding time by ~2×

TECH_STACK

AI/ML
RAG Pipelines
Vector Databases
LLM APIs
Android
iOS
Kotlin
RxJava
C++
Dagger2
CI/CD
Testing Frameworks
Security Analytics
NL2KQL

HACKATHONS_&_PROJECTS

Hermes @HackGT

Oct 2019

Java • OCR • Android

Gas price finder app using OCR (90.1% accuracy). Built in 36 hours.

🏆 Best Overall Concept Mention

BeaconNCR @NCRGlobalHack

Aug 2019

Java • Beacons • Android

Location-based promotional app for retail stores.

CSMusic @CollegiateHack

Jan 2019

Kotlin • AR • EdTech

AR music app teaching CS concepts to elementary students offline.

PharmaPal @HackATL

Oct 2018

Java • Python • Computer Vision

Medication-to-speech converter using computer vision (2s response).

🥈 2nd Place Health & Wellness

Awards: HackGT (Best Concept) • HackGSU (1st Crypto, 1st Anthem Grand Prize) • Outstanding Undergrad Research • 10+ total

CONTENT_CREATION

🎥 Singh in USA

1M+ Subscribers
100M+ Views
500+ Videos

Creating tech content about AI, software engineering, and developer tools. Collaborating with major tech companies including Microsoft, OpenAI, and Anthropic.

Featured Videos

Claude Code Tutorial
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Claude Code Tutorial

Exploring AI-powered coding with Claude Code

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Claude Code Deep Dive
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Claude Code Deep Dive

Advanced features and workflows

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OpenAI & AI Innovation
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OpenAI & AI Innovation

Latest developments in AI technology

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GET_IN_TOUCH

💼

LinkedIn

@iharnoor
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GitHub

@iharnoor
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Email

harnoor@singhinusa.com
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YouTube

Singh in USA