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Kevin W.

Kevin W.

AI & Machine Learning Engineer · Senior

United States · Rate on request

Professional Overview

Senior AI/ML Engineer with nearly 10 years of experience building production ML systems, LLM applications, and scalable AI infrastructure. Specialized in RAG, agentic workflows, recommendation systems, fraud detection, ranking models, and predictive analytics using PyTorch, XGBoost, LightGBM, LangChain, LangGraph, and cloud-native technologies.

Experience

Company
Orita
Oct 2024 – Jun 2026
Role title
Senior AI Engineer

AI Expertise

AI & Machine Learning Engineers MLOps & AI Infrastructure

Skills

Python PyTorch LangChain LlamaIndex Docker Kubernetes RAG

Employment Type

Full-time

Description of Responsibilities

  • Built production LLM apps with Next.js, Node.js, and OpenAI APIs
  • Built RAG systems using vector databases and enterprise data
  • Designed agentic AI workflows using tool/function calling
  • Built LLM observability for latency, cost, and quality tracking
  • Created LLM evaluation pipelines to reduce hallucinations
Company
Pacaso
Mar 2023 – Aug 2024
Role title
AI Engineer

AI Expertise

AI & Machine Learning Engineers NLP & Prompt Engineering

Skills

Python RAG AWS GCP Azure Docker CI/CD

Employment Type

Full-time

Description of Responsibilities

  • Built ML ranking and recommendation systems to improve search relevance
  • Developed LLM-powered conversational assistant for property discovery
  • Designed ETL pipelines and feature stores for ML personalization systems
  • Built NLP pipelines to extract structured data from unstructured documents
  • Created ML lead scoring and segmentation systems to improve targeting
Company
Robinhood
Feb 2020 – Feb 2023
Role title
AI Engineer

AI Expertise

AI & Machine Learning Engineers AI Product & Strategy

Skills

Python PyTorch NumPy LangChain Docker AWS

Employment Type

Full-time

Description of Responsibilities

  • Built recommendation and ranking systems for product discovery
  • Built real-time fraud detection using streaming ML models
  • Developed ML training and inference pipelines
  • Worked on distributed low-latency event processing systems
  • Productionized ML models for risk and decision systems

Education

School
Standford University
Sep 2013 – Jun 2017
Degree / Program
Bachelor of Science

Field of Study: Computer Science

Areas of Expertise

AI & Machine Learning Engineers

Design, train, and ship production ML models — from data pipelines to model inference at scale. Covers supervised learning, neural networks, LLM integration, and model optimisation.

Current location

United States

Time Zone

Chicago UTC-6

Primary Work Language

English

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