# Karthik Thyagarajan

Founder-engineer and Purdue CS student. This file is the complete machine-readable index of everything on karthikthyagarajan.com: work history, projects, community involvement, topics I have written up, and blog posts. Every entry links to its page and, where one exists, to a long-form notes page written in my own words.

Canonical site: https://www.karthikthyagarajan.com
Sitemap: https://www.karthikthyagarajan.com/sitemap.xml
Full text of every note in one file: https://www.karthikthyagarajan.com/llms-full.txt

Any note page is also available as raw markdown by appending `/raw` to its URL. For questions this index does not answer there is a retrieval-backed chat at https://www.karthikthyagarajan.com/?q=<your+question>.

## Work experience

- **AI Research Intern, Samsung Research America** (May 2026 - Aug 2026) - Built an on-device signal router for always-on ambient AI on Bixby Edge AI, running inference on the phone to filter incoming device signals at 95% suppression and 90% intent-routing accuracy so expensive frontier models are only called for events that need t... [page](https://www.karthikthyagarajan.com/work#samsung-research-america) [notes](https://www.karthikthyagarajan.com/notes/work/samsung-research-america)
- **Machine Learning Engineering Intern, Peraton Labs** (Jun 2025 - Aug 2025) - Developed a first-of-its-kind reinforcement learning agent for IoT malware detection in PyTorch, granting it low-level network traversal actions and full state observability to search device environments a brute-force scan cannot cover, cutting exploration la... [page](https://www.karthikthyagarajan.com/work#peraton-labs) [notes](https://www.karthikthyagarajan.com/notes/work/peraton-labs)
- **Computer Vision Researcher, Memories.ai** (Feb 2025 - May 2025) - Built a video memory framework for hours-long video that vision language models cannot process directly, combining keyframe extraction, dynamic segmentation, CLIP indexing, and YOLO and SAM object and face detection to index 10K+ streams in Python, Flask, and... [page](https://www.karthikthyagarajan.com/work#memories-ai) [notes](https://www.karthikthyagarajan.com/notes/work/memories-ai)
- **Undergraduate Robotics Researcher, IDEAS Lab** (Mar 2025 - May 2025) - Built a real-time SLAM pipeline in C++ and Python with RGB-D sensor fusion and Kalman filtering, streaming calibrated camera data to a multi-GPU server, improving 3D reconstruction accuracy 25% and reducing latency 30%. Implemented neural radiance fields (NeR... [page](https://www.karthikthyagarajan.com/work#ideas-lab) [notes](https://www.karthikthyagarajan.com/notes/work/ideas-lab)
- **Data Engineering Intern, AgRPA** (Aug 2024 - Dec 2024) - Built an end-to-end weed detection pipeline processing 200GB+ of drone imagery in Python with parallel ETL workflows and partitioned cloud storage, cutting analysis time 40%. Fine-tuned YOLO segmentation models to 92% accuracy on 50K+ images by fusing RGB and... [page](https://www.karthikthyagarajan.com/work#agrpa) [notes](https://www.karthikthyagarajan.com/notes/work/agrpa)
- **ML Science & Engineering Apprenticeship, Naval Research Laboratory** (Jun 2023 - Aug 2023) - Replaced slow physics-based underwater acoustic simulators with deep learning, encoding sound speed profiles as images and using image-to-image translation models to predict transmission loss 20% more accurately at a fraction of the compute cost. Built a Lang... [page](https://www.karthikthyagarajan.com/work#naval-research-laboratory) [notes](https://www.karthikthyagarajan.com/notes/work/naval-research-laboratory)

## Projects

- **Repple** (Ongoing - Python (FastAPI), Supabase, PostgreSQL, OpenAI API, Pydantic, TypeScript, Anthropic Claude) - Repple is a competitive fitness app for iOS that makes working out fun and consistent. Users earn points for workouts, create streaks, compete against friends in weekly matchups, and climb leaderboards. Features include ELO matchmaking, automated point aggreg... [page](https://www.karthikthyagarajan.com/projects#repple) [notes](https://www.karthikthyagarajan.com/notes/project/repple) [Download for iOS](https://apps.apple.com/us/app/repple-app/id6756220797) [LinkedIn](https://www.linkedin.com/company/reppleapp)
- **google-tools-mcp** (Apr 2025 - TypeScript, Node.js, Google APIs, OAuth 2.0, MCP SDK) - An open-source MCP server that unifies all of Google Workspace behind a single server and OAuth flow. 169 tools covering Drive, Docs, Sheets, Slides, Gmail, Calendar, and Forms. Features auto re-auth, PDF/Word reading from Drive, and read-before-edit guards.... [page](https://www.karthikthyagarajan.com/projects#google-tools-mcp) [notes](https://www.karthikthyagarajan.com/notes/project/google-tools-mcp) [GitHub](https://github.com/karthikcsq/google-tools-mcp) [npm](https://www.npmjs.com/package/google-tools-mcp)
- **Veritas** (Catapult 2026 - Next.js 14, React 19, Tailwind CSS, shadcn/ui, PostgreSQL via Supabase, NextAuth.js, World ID, OpenAI GPT-4o, Pinecone, Vercel) - Veritas is a clinical research platform that combines cryptographic proof-of-personhood (World ID) with ML-powered response quality scoring to give researchers clean, trustworthy data. Won Best Proof-of-Human Application at Catapult 2026. [page](https://www.karthikthyagarajan.com/projects#veritas) [notes](https://www.karthikthyagarajan.com/notes/project/veritas) [GitHub](https://github.com/karthikcsq/veritas) [Devpost](https://devpost.com/software/veritas-81fzu6) [Live](https://veritas-kasm.vercel.app)
- **Caladrius** (Sep 2025 - React Native, Python, LangGraph, AWS S3, REST API, Next.js) - Caladrius is a privacy-first AI triage assistant. It aims to cut through the inefficiencies of triage intake and inequities in prioritization, while maintaining a privacy-first HIPAA-compliant ethos. Awarded 2nd place in HackGT 12's track for social impact. [page](https://www.karthikthyagarajan.com/projects#caladrius) [notes](https://www.karthikthyagarajan.com/notes/project/caladrius) [GitHub](https://github.com/karthikcsq/Caladrius) [Devpost](https://devpost.com/software/caladrius)
- **Verbatim** (Feb 2025 - Next.js, Python, OpenAI API, Google Cloud, Vercel, REST API) - Verbatim is an intelligent platform that takes any video, summarizes it for quicker consumption, translates it into multiple languages, and then recreates the speaker’s lip movements to match the new audio—delivering a seamless, localized experience. [page](https://www.karthikthyagarajan.com/projects#verbatim) [notes](https://www.karthikthyagarajan.com/notes/project/verbatim) [GitHub](https://github.com/TheXDShrimp/verbatim) [Website](https://www.getverbatim.tech)
- **FORMulator** (2024 - Computer Vision, Machine Learning, Pose Estimation) - FORMulator allows users to perfect any type of body movement on their own, by leveraging computer vision technology to provide instant feedback. The app uses a combination of pose estimation and machine learning to analyze the user’s movements and provide rea... [page](https://www.karthikthyagarajan.com/projects#formulator) [notes](https://www.karthikthyagarajan.com/notes/project/formulator) [GitHub](https://github.com/karthikcsq/FORMulator)
- **Photonic Implementation of QKD** (Oct 2023 - May 2024 - Python, NumPy, Oscilloscope, Optics Hardware) - Quantum Key Distribution (QKD) is a method of secure communication that uses quantum mechanics to exchange cryptographic keys. This project focuses on the photonic implementation of QKD with near-infrared lasers, utilizing the principles of quantum mechanics... [page](https://www.karthikthyagarajan.com/projects#qkd) [notes](https://www.karthikthyagarajan.com/notes/project/qkd) [arXiv](https://arxiv.org/abs/2509.04389) [Research Poster](/QKDResearchPoster.pdf)
- **Self-Organizing Maps × K-Means** (2023 - Python, Machine Learning, SOM, K-Means) - This project explores how SOM, known for its capability to uncover topological structures, fared against traditional centroid-based approaches in capturing intricate data relationships. [page](https://www.karthikthyagarajan.com/projects#kmeans-som) [notes](https://www.karthikthyagarajan.com/notes/project/kmeans-som) [Research Preprint](/K_Means_SOM.pdf)
- **Quantum Racer** (Aug - Dec 2022 - Java, Android SDK, Gradle, XML) - Quantum Racer is a simple car racing game that teaches players about quantum decoherence and noise by challenging them to navigate a quantum car through a track while avoiding obstacles. The game is designed to be fun and educational, making it suitable for p... [page](https://www.karthikthyagarajan.com/projects#quantum-racer) [notes](https://www.karthikthyagarajan.com/notes/project/quantum-racer) [GitHub](https://github.com/karthikcsq/QuantumCarGame_Self)

## Community and involvement

- **buildpurdue** (Co-President & Co-Founder - Sep 2025 - Present) - Founder-led, peer-to-peer density for student builders at Purdue. [page](https://www.karthikthyagarajan.com/involvement#buildpurdue) [notes](https://www.karthikthyagarajan.com/notes/involvement/buildpurdue) [website](https://buildpurdue.org)

## Topics I have written up

- **On agents** - When agents save time and money, not just effort. [page](https://www.karthikthyagarajan.com/notes/topic/agents)
- **On where AI doesn't belong** - The duct tape test: when the whole point is for a human to do it. [page](https://www.karthikthyagarajan.com/notes/topic/where-ai-doesnt-belong)

## Blog posts

- **Stability in the Age of AI** (2026-05-09) - Why societal stability rests on stable income, and what could replace it in an age of AI. [page](https://www.karthikthyagarajan.com/blog/stability-in-the-age-of-ai)
- **The AI Company I'd Love to Create** (2025-10-08) - The AI company that I think may have either huge potential or will instantly flop. Either way, here's some non-wrapper wishful thinking for how I want to use the technology. [page](https://www.karthikthyagarajan.com/blog/the-ai-company-id-love-to-create)
- **On the Future of Work with AI** (2025-09-16) - How AI will shape the future of work, and how humanity will actually achieve bigger and better. [page](https://www.karthikthyagarajan.com/blog/future-of-ai-work)
- **My Trip to Silicon Valley: Insights and Innovations** (2025-03-25) - A week in Silicon Valley opened my eyes to the future of technology, from AI and robotics to the culture of collaboration that drives innovation. [page](https://www.karthikthyagarajan.com/blog/silicon-valley-trip)

## Other pages

- **About** - longer bio and background. [page](https://www.karthikthyagarajan.com/about)
- **Notes index** - every long-form writeup in one list. [page](https://www.karthikthyagarajan.com/notes)
- **Gallery** - photography. [page](https://www.karthikthyagarajan.com/gallery)
- **Resume** - PDF. [file](https://www.karthikthyagarajan.com/resume.pdf)