Ruby Fernandez
McAllen,TX
Summary
Senior Software Engineer and AI architect with 15+ years of production impact at McKinsey, Stripe, Compass, and Zillow spanning fintech, real estate, EdTech, and enterprise consulting. Expert in generative AI (OpenAI, Claude API, LangChain), full-stack MERN/Python/Java systems, and PCI-DSS payments infrastructure delivering QuantumBlack-aligned AI platforms for global enterprises including Allianz and Emirates NBD across 40+ payment methods at scale.
Overview
15
15
years of professional experience
Work History
Senior Software Engineer
Huge
01.2023 - Current
- Built AI-powered digital transformation platforms using React.js, Node.js, MongoDB, TypeScript, and Redux serving McKinsey enterprise clients across QuantumBlack-aligned engagements for Allianz and Emirates NBD, enabling AI-driven underwriting, claims, and financial product workflows.
- Developed real estate and construction enterprise prototypes using Figma, Next.js, FastAPI, and Python accelerating McKinsey's client engagement process and enabling rapid validation of AI-powered capabilities across enterprise real estate and industrial workflows.
- Built enterprise-grade generative AI solutions for higher education and EdTech platforms using OpenAI API, Anthropic Claude API, LangChain, Python, Flask, and MongoDB delivering AI-powered chatbots, adaptive learning assistants, and intelligent search features supporting learner outcomes at scale.
- Engineered secure RESTful APIs and GraphQL services using Node.js, Express.js, PostgreSQL, and Redis, deployed via CI/CD pipelines on cloud infrastructure (AWS) enabling real-time data integration, spend and carbon transparency, and omnichannel commerce across enterprise and ecommerce systems.
Senior Software Engineer
SmartSites
01.2020 - 01.2023
- Built high-performance education industry client websites using React.js, Node.js, and Next.js (SSR, SSG) delivering SEO-optimized, responsive solutions that improved organic search rankings and student enrollment conversion rates.
- Developed RESTful APIs with Node.js and Express.js for PayPal integrating PPC, SEO, Social Media, and Email/SMS services to enable real-time performance insights and campaign ROI visibility across all digital marketing channels.
- Engineered scalable ecommerce platforms using Shopify, WooCommerce, and React.js backed by PostgreSQL integrated Stripe Payments and Stripe Billing for PCI-compliant transaction processing, subscription lifecycle management, and automated billing workflows.
- Developed Compass's marketing analytics dashboards using React.js, Chart.js, Java, MongoDB, and SEMrush APIs delivering unified SEO, PPC, and campaign ROI visibility across Compass's national real estate marketing teams.
Senior Full Stack Developer
Compass
09.2017 - 01.2020
- Built a scalable ecommerce-inspired agent care coordination platform using React.js and Node.js applying customer journey mapping, conversion funnel tracking, and omnichannel engagement workflows across inbound lead management, active listings, and post-close transaction care.
- Engineered a secure real estate operations portal using React.js and Python (FastAPI) with RBAC tracking active property listings, homebuyer pipelines, and transaction milestones across agents, buyers, and concierge teams from construction to close.
- Built virtual tour and remote consultation features using Twilio Video and WebRTC delivering seamless remote property showings between agents, buyers, and coordinators.
- Designed analytics dashboards integrating Tableau APIs, Power BI APIs, Express.js, and MongoDB monitoring listing conversion rates, days-on-market trends, and Compass Concierge payment ROI metrics to deliver actionable payment intelligence.
Full Stack Developer
Stripe
02.2014 - 09.2017
- Built Stripe Checkout flows using Stripe.js, JavaScript (ES6), and Ember.js, integrating Stripe Elements for secure payment processing. Enabled merchants to accept global payments across 40+ payment methods.
- Built Stripe Capital merchant payment dashboard infrastructure in Java (Spring Boot) and Python (Django REST Framework, Celery Beat) powering daily payment eligibility tracking pipelines, dynamic financing offer selection, and automated working capital workflows.
- Engineered real estate revenue analytics using PostgreSQL, Redis, and RESTful APIs automating capital advance repayments as a percentage of daily property transactions, enabling homebuilders to maintain payment transparency and cash flow visibility.
- Built responsive Stripe Dashboard UI components using Ember.js and JavaScript (ES6) with MySQL powering structured transaction records and MongoDB handling flexible payment configuration data, enabling transaction monitoring and payout management at scale.
Web Developer
Zillow
01.2011 - 02.2014
- Developed Zillow's Builder Dashboard using Backbone.js, jQuery, and Handlebars.js surfacing buyer engagement metrics, click-through rates, and ad spend summaries via internal reporting APIs to support new home sales performance tracking.
- Designed MySQL schemas with Java (Spring MVC) and Spring JDBC managing inventory across four construction sales centers spanning custom home configurations, spec home pipelines, and pre-priced residential models.
- Integrated Authorize.Net and Java (Spring MVC) for Builder Boost payment processing delivering secure pay-as-you-go billing, recurring payment scheduling, and full PCI-DSS compliance across all payment transaction workflows.
Education
Master of Science - Software Development
Hardin-Simmons University
Abilene, TX01-2011
Bachelor of Science - Computer Science
Houston Christian University
Houston, TX01-2008
Skills
- JavaScript
- TypeScript
- Reactjs
- Nextjs
- Emberjs
- JQuery
- Python
- Django
- Flask
- Nodejs
- Expressjs
- Java
- MongoDB
- PostgreSQL
- MySQL
- GraphQL
- RESTful APIs
- AuthorizeNet
- SEMrush API
- Figma
- AWS
- CI/CD
Personal Information
Title: Senior Software Engineer and AI architect
Timeline
Senior Software Engineer
Huge
01.2023 - Current
Senior Software Engineer
SmartSites
01.2020 - 01.2023
Senior Full Stack Developer
Compass
09.2017 - 01.2020
Full Stack Developer
Stripe
02.2014 - 09.2017
Web Developer
Zillow
01.2011 - 02.2014
Bachelor of Science - Computer Science
Houston Christian University
Master of Science - Software Development
Hardin-Simmons University