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Hi, my name is Juice

Justin L. Espiritu

Senior Software Engineer (AI Pilot & Champions Team) at Cotality

Skills

Experiences

1
Cotality

March 2022 - Present

Senior Software Engineer (AI Pilot & Champions Team)

March 2022 - Present

Responsibilities:
  • Accelerated end-to-end ticket execution—spanning planning, architecture design, and implementation—reducing average delivery time from over a week down to 1-2 days (a ~70-80% increase in velocity) using Claude and AI-first workflows.
  • Developed fine-tuned models specifically designed to optimize internal development workflows and automate repetitive engineering tasks.
  • Served on the AI Champions team, driving corporate AI adoption by successfully onboarding the immediate engineering team and tracking cross-functional integrations.
  • Spearheaded regular ‘AI Wins’ presentations to showcase technical optimizations, AI assistant tools, and best practices to leadership and other departments.
  • Designed, wrote, tested, and implemented complex software features for Web UI and Mobile architectures.
  • Reviewed functional and technical requirements, identifying potential system constraints and participating energetically in architecture discussions.
  • Defined accurate estimates of work effort and leveraged agile methodologies to aid in sprint planning.
  • Promoted application logging and infrastructure metrics as a first-class component of software delivery.
  • Collaborated closely with QA, Product, and customer-facing teams to ensure a high standard of quality and strict customer focus at all times.
  • Mentored junior engineers and interns to elevate code quality and team velocity.

Rocket Central

Sept 2021 - Feb 2022

Contract Software Engineer

Sept 2021 - Feb 2022

Responsibilities:
  • Full Stack Development
  • Configure, design, and devlop apps for internal & external use
  • Collaborate with other engineers & associate engineers to solve issues
  • Collaborate with busines & product owners to create stories and make changes needed by the business
2

3
Aperture Labs LLC

Aug 2019 - Aug 2021

Software Engineer

Aug 2019 - Aug 2021

Responsibilities:
  • Full Stack Development
  • Configure, design, & develop e-commerce websites with nopCommerce
  • Design & develope custom plugins for nopCommerce & EpiServer
  • Design & Develop custom extension for inRiver PIM (Product Information Management)

Mercury Marine

January 2019 - July 2019

Teamcenter Implementations Engineer

January 2019 - July 2019

Responsibilities:
  • Collaborate with local & remote team members in developing & executing Teamcenter solutions
  • Configure teamcenter BMIDE, BOM Mangement, Workflows, Access control, Change Mangement, Dispatcher Configuration, & other Teamcenter Modules
  • Customize Teamcenter using standard Teamcenter APIs
  • Troubleshoot Teamcenter technical issues at various levels such as installation, deployment, & configuration
  • Perform data modeling & data mapping process in assistance with business analysts & solution architects
4

5
University of Wisconsin Oshkosh

March 2017 - December 2018

Web Application Developer

March 2017 - December 2018

Responsibilities:
  • Rewrote the Advising Worksheet, an application for advisors at the UARC (Under Graduate Advising Resource Center) & SSC (Student Success Center)
  • Created AngularJS directive for developer to accelerate & simplify the process to create multiadd fields to forms
  • Provided detailed documentation in Confluence for developer to use newly created directives & applications

Research Assistant

Jan 2017 - May 2017

Responsibilities:
  • Created a program in Python 2 using the NLTK (Natural Language Tool Kit) library to gather dta on articles & create simple summaries on provided articles
6

Feature Projects

boulderLeague
Creator

A mobile application to maintain records of routes and track progress at the rock climbing gym. Leveraged Claude as an AI architectural assistant to rapidly prototype and construct a robust mobile application in Flutter.

Dispatch
Senior Software Engineer

Designed and implemented a high-performance mobile application with real-time push notifications. Leveraged AI assistants (Claude, Copilot, Gemini) to architect the notification system and automate CI/CD workflows via Fastlane.

Resource Manager
Senior Software Engineer

Created, modified, maintained, designed Web UI for Resource Management Web App

Checkmate
Software Engineer

Created, modified, and designed Web UI updates to the Checkmate App

GIS
Software Engineer

Feature Story. Helped create a custom service api that helps syncronize data between in house applications

DEI
Software Engineer

Created, modified, deployed, and designed Web UI for DEI

Checkmate
Software Engineer

Created, modified, deployed, and designed Web UI for Checkmate App

guySupport
Software Engineer

Created, modified, deployed, and designed Web UI for guySupport App

Drive
Software Engineer

Created, modified, deployed, and designed Web UI for Drive App

Allin Documentation Job
Software Engineer

Created, modified, deployed, and designed automation job for Allin Documentation

Allin
Software Engineer

Created, modified, deployed, and designed Web UI for wordpress website

Engineer On-Boarding Repo
Lead Developer

Created a repo that streamlined the onboarding process for new engineers.

Vendor Docs
Lead Developer

Updated custom app that allows users to check & update current NDA with clients.

Podracer's Engineer Blog
Lead Developer

Created an internal blog to help update the business and other engineer teams what Podracer’s is currently working on.

Portescap
Developer

Created, designed, and cusomized a custom plugin for inRiver platform

Osborn
Developer

Created a custom plugin for inRiver platform

Secura
Developer

Helped rewrite and create customization for Secura’s front facing application in Epi Server.

CSP
Developer

Created, modified, and deployed package for nopCommerce

Arbor Day Foundation
Developer

Helped rewrite and create customization for Arbor Day Foundation e-commerce website.

Advising Worksheet App
Lead Developer

Developed a web app to streamline the advisor form for Advisors at the University of Wisconsin - Oshkosh

Wedding Website
Creator

Created our wedding website using Ionic and Angular 9.

Portfolio Website
Creator

Modern, data-driven portfolio and professional resume built using Hugo and Antigravity-assisted development. Features automated PDF generation, premium CSS layouts, and architectural AI integration.

Personal Blog
Creator

Personal blog to help me stay on track when I was dieting and rock climbing. This current website will be replacing that blog.

Personal Website
Creator

Simple Portfolio website. This current website will be replacing that portfolio website.