SAM MESSINA

Saint Louis, MO

sam@smessina.com

EDUCATION

B.S. Computer Science | Southern Illinois University

January 2014 - May 2018


WORK EXPERIENCE

Applied AI Engineer | Bitovi

June 2025 - Present

  • Built LLM automation pipelines using n8n, vLLM, reducing client operations workload
  • Developed containerized AI microservices with Docker and Kubernetes for routing and horizontal scaling
  • Implemented vector-store RAG systems to power documentation search and workflow automation

Software Consultant | Freelance

March 2024 - May 2025

  • Audited Next.js application performance and improved page load times by 65% (Hedera crypto exchange)
  • Designed and implemented crypto purchase functionality in a Next.js application (Hedera crypto exchange)
  • Triaged and resolved production defects in a legacy React application (Cross-chain crypto bridge)

Senior Software Engineer | Capital One

December 2022 - February 2024

  • Migrated a high-volume application from EC2 to AWS Batch and Fargate, increasing resilience
  • Built a modular, database-driven customer-offer platform using Java and Spring Boot, enabling flexible offer logic and simplifying updates
  • Maintained and enhanced pipelines that enabled customer hardship offer processing

Senior Software Engineer | Maxwell

July 2021 - November 2022

  • Led development of screen-sharing capabilities using React and Ruby on Rails
  • Implemented a WebSocket-driven system for asynchronous UI updates using React and Ruby on Rails
  • Served as development lead for Snapdocs e-closing integration (React, Webhooks, and Ruby on Rails)

JavaScript Developer | Bitovi

February 2020 - July 2021

  • Co-designed and built the PPP loan application using Node, Koa, and React with TypeScript
  • Implemented a micro-frontend architecture in React to modernize a legacy platform
  • Developed a spreadsheet application supporting formulas and reference cells using RxJS and React
  • Managed a four-developer squad dedicated to a major client application

Front End Developer | TopstepTrader

June 2018 - February 2020

  • Architected a micro-frontend migration from an Angular 2 monolith to a streamlined React codebase
  • Led front-end initiatives across Angular 2, React, Django templates, HubSpot HubL, custom WordPress themes, and native HTML/CSS/JavaScript
  • Built and maintained a reusable component library compiled with Webpack
  • Led front-end hiring by designing technical assessments and interview processes

Web Developer Intern | MacUpdate

June 2016 - September 2017

  • Reduced average page weight by 15% through a new build pipeline using Grunt and Node
  • Implemented responsive site design with Bootstrap, jQuery/JavaScript, CSS, and HTML

Student Developer | Southern Illinois University

January 2014 - May 2018

  • Developed web pages, forms, and applications using HTML, CSS, JavaScript, and PHP

Languages

JavaScript, Typescript, HTML, CSS, SCSS, Python, PHP, Ruby, MySQL, Java, Bash

Libraries

React, Angular, Node, RxJS, Redux, Django, Rails, Remix, Llama.cpp

Tools

Git, Webpack, Gulp, Grunt, Linux, Vim, Docker, Kubernetes, n8n, RAG pipelines