Curriculum Vitae

Rabimba Karanjai

Staff Agentic AI Researcher · PhD · Google Developer Expert

2010 – 2013

The Builder Awakens

Started as a Programmer Analyst at Cognizant, building automated mobile testing solutions with OpenCV. First taste of making machines see and decide.

OpenCV Mobile Testing Automation
2014 – 2015

Watson & The Research Lab

Joined IBM T.J. Watson Research Lab. Embedded cognitive computing and NLP into Watson solutions. Trained custom NLP models before "LLM" was a buzzword.

Watson NLP DeepQA
2015 – 2018

VR, Browsers & a Master's Degree

MS at Rice University. Research Assistant parallelizing JavaScript for VR headsets at Mozilla Research. Optimized WebGL and Three.js for wearable VR. Earned a Mozilla Research Fellowship.

WebVR WebGL Three.js Mozilla
2015 & 2017

Patents at IBM Almaden

Two summer internships at IBM Almaden Research Center. Invented a multi-factor authentication system using biometrics + blockchain — awarded US Patent US11025643B2. Built tamper-evident systems with ARM TrustZone.

Patent Blockchain Biometrics TrustZone
2020

The Startup Life

Machine Learning Lead at Fireflies.ai — built the on-premise ASR engine used by 10M+ users. Then Senior Engineer at Clearedin, designing phishing detection and URL scanning pipelines.

ASR DeepSpeech Phishing Detection
2020 – 2025

The PhD Quest: Teaching AI to Reason

PhD at University of Houston, advised by Prof. Weidong Shi. Dissertation: "Teaching AIs to Reason and Code, Confidentially." Won the Dan E. Wells Outstanding Dissertation Award and UH Best Dissertation Award.

40+ publications (41 published, 28 first-author). 4x research grants. ACM SIGSOFT Distinguished Paper Award. Best Dissertation Award. Google Cloud Research Innovator. NeurIPS 2026.

LLM Reasoning Smart Contracts Code Generation Blockchain
2025 – Present

PayPal: Production AI at Scale

Staff Agentic AI Researcher at PayPal Research (San Jose). Lead technical strategy for production-scale agentic AI: built a voice-to-voice model with NVIDIA and a frontier multimodal model with Google (lead author on both), invented the CM-DPO preference-optimization framework, and train frontier LLMs up to 120B parameters. Designed a multi-agent adversarial evaluation arena; filed 3 U.S. patents.

Voice Commerce Agentic AI 120B LLMs Production
41+
Publications (41 published)
1 + 6
US Patents (1 issued, 6 filed/pending)
85+
Invited Talks
$90K+
Research Grants (4x)

Selected Awards

🏆 Dan E. Wells Outstanding Dissertation Award
🏅 ACM SIGSOFT Distinguished Paper Award
⭐ Google Developer Expert (Web & ML)
🌐 Google Cloud Research Innovator
🎓 UH Best Dissertation Award
🔥 NVIDIA Developer Champion
⚡ Google TPU Builders (2026)
🥇 Outstanding PhD Student — UH (2022–2024)
🎖️ HPE DSI AI Showcase — 3rd Place (2023)

Service & Community

Associate Chair — AAAI 2027 & ACM CSCW 2026 · Track Chair — ICEDEG 2026
Scientific Advisory Committee — Texas Quantum Initiative
Google Developer Expert — Web Technologies (2018–present), Google Cloud (2024–present) · Google TPU Builders (2026)
Reviewer (Journals) — PLOS One, Frontiers in Blockchain, ACM DLT, ACM TALLIP, Connection Science, ACM TWEB
Reviewer (Conferences) — CHI 2026, IEEE VR 2026, AAAI 2025, ICLR 2024, IEEE ICEDEG 2025

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