Years of
Experience
Sports CM
website
2016
ERP, SYSTEMS INTEGRATION & BUSINESS AUTOMATION
FREDDY ARVIZU
Laravel, PHP, REST APIs, MySQL, cloud infrastructure and BI
I build the systems that keep operations, invoicing and reporting moving.
12+ years shipping enterprise software end to end: multi-company ERP platforms, CFDI 4.0 and PAC integrations, automated workflows, custom dashboards and reliable backend infrastructure.
8184
89080
+
Projects
Completed
Completed
81.85
K
Happy
Clients
Clients
SELECTED PROJECTS
Enterprise systems, ecommerce platforms, API integrations and operational software built to connect sales, inventory, finance, billing and reporting.
MORE ABOUT FREDDY
I am Freddy Arvizu, a senior full-stack developer who turns complex business operations into dependable software.
My strongest work lives where software meets real operations: ERP modules, electronic invoicing, REST APIs, reporting layers, data modeling and workflow automation. I am comfortable owning the full lifecycle from stakeholder scoping through backend, frontend, deployment and reliability.
Senior developer focused on ERP platforms, integrations, BI reporting and business automation.
Get in touch
MY SERVICES
(1) ERP & BACKEND DEVELOPMENT
Laravel and PHP systems for administration, AP/AR, purchasing, inventory, CRM, reporting and business rules that need to survive real operational pressure.
(2) API & PAC INTEGRATIONS
REST APIs, webhooks, OAuth flows, payment processors, third-party platforms and CFDI/PAC providers with retry logic, monitoring and failure handling.
(3) BI DASHBOARDS & DATA
SQL reporting views, KPI dashboards, data modeling and executive-level reporting that replaces fragile spreadsheets with trusted operational visibility.
(4) ECOMMERCE & WEB PLATFORMS
Shopify, WooCommerce, Prestashop, WordPress and custom portals connected with payments, shipping, inventory and marketing automation workflows.
(5) AUTOMATION & CLOUD DELIVERY
Python scripts, background jobs, Docker deployments, CI/CD pipelines, Linux servers and AWS/GCP infrastructure for systems that need to run reliably.
WHAT I SOLVE
I help companies replace manual work, disconnected tools and unreliable reporting with software that keeps operations aligned across departments.
That can mean a complete ERP module, a cleaner integration layer, a dashboard leadership can trust, or automation that saves dozens of manual hours every month.
EXPERIENCE
INTESYSTEM - SENIOR SOFTWARE DEVELOPER / TECHNICAL LEAD
Multi-company ERP, CFDI 4.0 and technical leadership 2018-2026
Led the architecture and full development lifecycle of a Laravel ERP covering administration, invoicing, AP/AR, purchasing, inventory and CRM for multiple business entities.
MISHTECH - FULL-STACK WEB DEVELOPER
Ecommerce, portals and agency delivery 2015-2018
Built Shopify, WooCommerce and Prestashop storefronts, custom Laravel/PHP backends, booking systems, client portals, marketing automation workflows and analytics implementations.
CONSULTING & BUSINESS AUTOMATION
Digital strategy, AI-assisted workflows and KPI tracking 2026-present
Advises companies on digital strategy and technology adoption, including editorial workflows, AI-assisted content processes and KPI tools for campaign operations.
CORE
STACK
LARAVEL
Laravel / PHP architecture
My main stack for ERP modules, REST APIs, admin systems, service layers and business logic that can evolve without becoming operational debt.
JQUERY
Legacy-friendly JavaScript
Practical frontend work for dashboards, admin workflows and existing systems where jQuery or similar tools are still part of the product surface.
JAVASCRIPT
Modern frontend delivery
JavaScript and Vue.js for interfaces, forms, dashboards and portals, with React and TypeScript experience from personal projects.
WOOCOMMERCE
Ecommerce integrations
WooCommerce, Shopify and Prestashop implementations connected to payment, shipping, inventory and operational workflows.
MYSQL
Data modeling and reporting
MySQL and SQL Server schema design, complex queries, reporting pipelines and performance-focused decisions for growing business data.
FREQUENTLY ASKED QUESTIONS
I work on ERP systems, Laravel/PHP backends, API integrations, ecommerce platforms, BI dashboards and automation projects where operational reliability matters.
Yes. Much of my senior work involves understanding existing systems, improving them safely, and creating a cleaner path forward without disrupting day-to-day operations.
Yes. I have built CFDI 4.0 modules and integrations with multiple PAC providers, including retry logic, failover thinking and production support for invoicing continuity.
Yes. I build SQL reporting layers, KPI dashboards and operational views that consolidate data from ERP modules and replace manual spreadsheet reporting.
Yes. I am open to remote roles, contractor work and selected freelance projects where backend ownership, integrations and technical judgment are valued.
Yes. I support WooCommerce, Shopify, Prestashop and WordPress when they are part of a business platform or revenue workflow, while my deepest focus remains backend systems and integrations.
LET'S BUILD RELIABLE BUSINESS SYSTEMS
Remote freelance and contractor work for ERP, integrations, automation, ecommerce and backend platforms.If your operations need a stronger system, integration layer, dashboard or automation workflow, send me the context and I will review it.
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PROJECT-BASED WORK
ERP, INTEGRATION AND AUTOMATION SOLUTIONS
Backend platforms, APIs, CFDI/PAC integrations, dashboards and automation workflows built to keep business operations connected and reliable.
KEY SERVICES
(1) ERP and backend systems
(2) API, PAC and ecommerce integrations
(3) BI reporting and automation
