psr.ai

Software Engineer · AI/ML · Stanford

About

About

Prabhjot Singh Rai

Platform Technical Lead (AI/ML)

ISHI Health

I build intelligent systems at the intersection of software engineering and artificial intelligence. With over a decade of experience spanning full-stack development, data engineering, and machine learning, I've led teams across startups and enterprises — from YC-backed companies to Fortune 500 research labs. My work focuses on designing ML platforms, fine-tuning large language models, and deploying production inference pipelines at scale.

Engineering is engineering — whether optimizing fiber bonding or neural network architectures, the discipline of systematic analysis and creative problem-solving transfers across domains.

Career

Career

A Decade of
Building & Leading

Jan 2025PresentFull-time

Platform Technical Lead (AI/ML)

ISHI Health · Remote

Leading the AI/ML platform architecture for a health-tech company, building intelligent systems that scale.

AI/MLPlatformLeadership
Jun 2024Nov 2024YC W22

Sr. Software Engineer & AI Lead

Nophin · New York, Remote

Led AI infrastructure at a YC-backed startup. Designed cloud-agnostic ML platforms, fine-tuned LLMs to 100% accuracy on evaluation sets, and built model inference pipelines with Ray Serve and Modal.

LLMsRay ServePyTorch
Dec 2022Aug 2023Full-time

Senior Engineering Lead

Persistent Systems · India

Led a team of 20 engineers building CRM systems for enterprise VoIP clients. Architected microservices for four different platforms and directed a full-stack training program.

JavaRedisMicroservices
Jan 2022Sep 2022Full-time

Software Engineer

Phaidra · Remote

Built data pipelines handling 30GB daily for in-memory graph databases. Increased industrial operations efficiency by 20% using reinforcement learning on machine learning accelerators.

ReactPythonRL
Oct 2020Dec 2021Full-time

Senior Software Engineer

Flyhomes · India

Developed custom features from clickstream and transactional data for predictive analytics. Achieved a 30% increase in client conversions through data-driven statistical modeling.

AWSRuby on RailsAnalytics
Jun 2020Sep 2020Internship

Machine Learning Engineer

Seagate Technology · Bloomington, MN

Investigated hard drive failures using machine learning. Built predictive maintenance models with Random Forest and Decision Trees, utilizing advanced sampling techniques.

PyTorchPythonML
Jan 2020Sep 2020Research

Lead Software Engineer

University of Minnesota · Minneapolis, MN

Created document representations using word2vec and multi-class classification with SVM. Built a dashboard for 100K documents with virtual scrolling and search.

PyTorchJavaNLP
Jan 2018Aug 2019Full-time

Principal Software Engineer

Flyhomes · India

Led the Flyhomes.com search API and CRM products serving thousands of users. Managed mobile app development across iOS and Android with React Native.

AWSReactReact Native
Jan 2017Jan 2018Full-time

Senior Software Engineer

Flyhomes · India

Built core platform features and data migration pipelines to AWS S3, optimizing storage and reducing man-hours significantly.

AWSReactRuby on Rails
Jun 2015Jan 2017Full-time

Software Engineer

R Systems · India

Implemented NLP techniques using Stanford's CoreNLP for sentiment analysis for Fortune 500 companies. Built ETL pipelines processing thousands of PDFs daily.

JavaAngularJSNLP
May 2014Jul 2014Internship

Intern Engineer

Centre Technique du papier · Grenoble, France

Research internship at France's premier paper technology institute. Worked on process optimization and materials science — the analytical foundation for a career in software and AI.

ResearchProcess Engineering
Research

Research

Stanford University

Applied research in reinforcement learning and natural language processing, conducted as part of Stanford's AI Graduate Certificate program.

University of Minnesota

Graduate research in deep learning and reinforcement learning, sponsored by AWS Research.

Connect

Connect

Let's Build
Something Together

Whether you have a question, an opportunity, or just want to say hello — I'd love to hear from you.

Schedule a meeting

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