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Resume

Christopher Hacia • Full-Stack Developer

Skills

Backend
Node.js
Express.js
PHP
Python
Java
REST APIs
GraphQL
Database
PostgreSQL
MySQL
MongoDB
Redis
Elasticsearch
DevOps
AWS
Docker
Kubernetes
Jenkins
GitHub Actions
CI/CD
Nginx
Linux
Frontend
JavaScript
TypeScript
React
Redux
Next.js
Angular
Vue.js
HTML5
CSS3
Sass/SCSS
Tailwind CSS
Material UI
jQuery
Backbone.js
Soft Skills
Team Leadership
Mentoring
Agile/Scrum
Code Review
Technical Documentation
Cross-functional Collaboration
Testing
Jest
Mocha
Cypress
Playwright
Selenium
PHPUnit

Experience

Senior Software Engineer

Tenna
Contract

Apr 2026 – Present

Remote

    React
    JavaScript
    TypeScript
    MUI
    Node.js
    Postgres

    Senior Software Engineer

    Walmart
    Contract

    Sep 2025 – Mar 2026

    Remote

    • • Full-Stack development working with NextJS / React / TypeScript / GraphQL

    • • e2e integration and unit testing with Jest / React Testing Library / Selenium

    • • ADA compliance development, PCI compliance development, SDLC practices

    • • Built and deployed new features within the Walmart.com ecosystem

    React
    TypeScript
    JavaScript
    GraphQL
    Redux
    HTML
    CSS

    Senior Software Engineer

    John Deere
    Contract

    Aug 2023 – Dec 2024

    Remote

    • • Developed responsive UIs with Angular 17+, emphasizing accessibility and performance.

    • • Built data processing with Node.js Lambdas on AWS (Lambda + API Gateway) into MongoDB/PostgreSQL stores.

    • • Maintained legacy integrations in PHP (Zend) and Python; refactored modules for readability and testability.

    • • Kept unit tests running in Jasmine/Karma and Pytest, enforced via GitHub Actions.

    • • Mentored junior engineers via code reviews and architecture walkthroughs.

    Angular
    Node.js
    AWS Lambda
    API Gateway
    MongoDB
    PostgreSQL
    PHP
    Python
    Jasmine
    Karma
    GitHub Actions

    Senior Software Engineer

    Blackline Safety
    Contract

    Apr 2022 – Aug 2023

    Remote

    • • Developed responsive UIs with Angular 17+, emphasizing accessibility and performance.

    • • Built data processing with Node.js Lambdas on AWS (Lambda + API Gateway) into MongoDB/PostgreSQL stores.

    • • Maintained legacy integrations in PHP (Zend) and Python; refactored modules for readability and testability.

    • • Kept unit tests running in Jasmine/Karma and Pytest, enforced via GitHub Actions.

    • • Mentored junior engineers via code reviews and architecture walkthroughs.

    Angular
    Node.js
    AWS Lambda
    API Gateway
    MongoDB
    PostgreSQL
    PHP
    Python
    Jasmine
    Karma
    GitHub Actions

    Software Engineer III

    Facebook (Meta)
    Contract

    Oct 2021 – Apr 2022

    Remote

    • • Delivered features for internal admin tools using React + GraphQL; collaborated on schema design and UI contracts.

    • • Consumed Hack (PHP variant) microservices; maintained strict typing and internal CI/testing standards.

    • • Documented reusable patterns for React hooks/state and shared them with adjacent teams.

    React
    GraphQL
    Hack
    PHP

    Software Engineer

    Wells Fargo
    Contract

    Apr 2021 – Oct 2021

    Remote

    • • Maintained UI for a Java-backed billing platform with JSP, jQuery, Bootstrap focusing on cross-browser performance.

    • • Automated key workflows with Selenium; collaborated on accessibility checks with internal tooling.

    • • Supported sprint planning, QA handoffs, and production hotfixes.

    Java
    JSP
    jQuery
    Bootstrap
    Selenium

    Software Engineer II

    Intuit
    Contract

    Apr 2020 – Apr 2021

    Remote

    • • Built React + TypeScript and GraphQL features for QuickBooks web UI.

    • • Partnered with backend teams on schema design and endpoint contracts (validated via GraphiQL/Postman).

    • • Added Jest tests to critical modules and integrated with Jenkins for CI enforcement.

    • • Reviewed designs to ensure accessibility and faithful implementation.

    React
    TypeScript
    GraphQL
    Jest
    Jenkins
    GraphiQL
    Postman

    Senior Software Engineer

    Walmart Labs

    Sep 2019 – Apr 2020

    Sunnyvale, CA

    • • Delivered React/Redux modules for account management, integrating with Java/Spring REST services.

    • • Implemented consistent UI with Material UI, responsive breakpoints, and linting/formatting standards.

    • • Wrote Jest/Enzyme tests and worked with DevOps to include them in CI.

    React
    Redux
    Java
    Spring
    Material UI
    Jest
    Enzyme

    Senior Software Engineer

    Cisco

    Jun 2019 – Sep 2019

    San Jose, CA

    • • Shipped React frontends for internal collaboration tools; wrote Jest/Enzyme unit tests.

    • • Built Node.js microservices that persisted analytics to MongoDB and surfaced data via Elasticsearch.

    • • Automated builds in Jenkins, produced Docker images, and coordinated deployments to AWS EC2.

    React
    Node.js
    MongoDB
    Elasticsearch
    Jest
    Enzyme
    Jenkins
    Docker
    AWS EC2

    Lead Software Engineer, Co-founder

    Guardian Alliance Technologies

    Sep 2017 – Apr 2019

    Stockton, CA

    • • Co-architected a CJIS-aware SaaS using PHP (CodeIgniter) and Node.js with multi-tenant MySQL/PostgreSQL.

    • • Managed AWS GovCloud resources (EC2, RDS, S3) with least-privilege IAM; maintained audit logging.

    • • Implemented OWASP-aligned practices and prepared for FedRAMP-style reviews.

    • • Built Jenkins pipelines to run PHP/Node tests and ship containerized services (ECS where applicable).

    • • Led standups, reviews, and mentoring for a team of five.

    PHP
    CodeIgniter
    Node.js
    MySQL
    PostgreSQL
    AWS GovCloud
    EC2
    RDS
    S3
    Jenkins
    ECS

    Lead Software Engineer

    MindSlap

    Aug 2016 – Sep 2017

    Stockton, CA

    • • Delivered client projects: React frontends, PHP (CodeIgniter) services, and WordPress-driven microsites.

    • • Created reusable components and integrated legacy jQuery plugins only where needed.

    • • Established Jest and PHPUnit suites and surfaced results in Jenkins.

    React
    PHP
    CodeIgniter
    WordPress
    jQuery
    Jest
    PHPUnit
    Jenkins

    Senior Software Engineer

    Zetta Inc.

    Apr 2012 – Jul 2016

    Sunnyvale, CA

    • • Modernized legacy UI by moving from PHP templates to React and Backbone.

    • • Exposed data via PHP (Zend) REST APIs backed by MySQL/PostgreSQL.

    • • Authored Jenkins pipelines to build/test JS bundles and deploy to AWS S3/CloudFront.

    • • Introduced TDD practices and mentored junior developers.

    React
    Backbone
    PHP
    Zend
    MySQL
    PostgreSQL
    Jenkins
    AWS S3
    CloudFront

    Education

    Self-taught / Continuous Learning

    Various Online Platforms & Industry Experience

    Continuous professional development through hands-on experience, online courses, certifications, and staying current with emerging technologies.

    Remote

    Certifications & Awareness Training

    CJIS Awareness (FBI CJIS Division)
    FedRAMP Awareness (GSA)
    HIPAA/PHI Awareness (HHS)
    OWASP Security Practices (OWASP Foundation)