Catriel Bartezaghi
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PHPLaravelMySQLDockerGitLab CI/CDOpenAI APITwilioNext.jsFastAPI

I build backend systems for business-critical workflows

Computer Engineer and backend-focused Full Stack Developer specialized in PHP/Laravel, SQL, legacy systems, automation, integrations, CI/CD, and maintainable web applications.

I help turn complex business processes into reliable, maintainable software for real operations, with a focus on data, automation, integrations, and production reliability.

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About Me

I am a Computer Engineer and backend-focused Full Stack Developer specialized in turning business rules, data, and operational processes into maintainable backend systems.

My work centers on translating complex operational workflows into maintainable systems: data modeling, SQL optimization, versioned migrations, API integrations, automated validations, and production-oriented web applications.

I work with legacy PHP/MySQL systems, Laravel applications, WordPress websites, Docker, GitLab CI/CD, and AI-powered automation, with experience in production systems, operational workflows, and data-oriented applications.

Quick Facts

  • Computer Engineer
  • Based in Argentina
  • Backend-focused Full Stack
  • English & Spanish
  • Business systems
  • Backend, data & automation
Portfolio

Featured Projects

A selection of engineering work focused on reliable business systems, automation, financial tooling, and applied machine learning.

Operations

Professional Work - Serfe

Production and Traceability System for Dairy Operations

Develop and maintain critical functionality for a legacy PHP/MySQL intranet used in daily dairy production operations, including recipes, batch/lot traceability, supply consumption, produced batches, inventory movements, and operational reporting.

Focus:

  • •Legacy PHP/MySQL system used in production
  • •Batch/lot traceability, recipes, inventory movements, and supply control
  • •Table design, versioned migrations, and SQL queries
  • •CI/CD with unit tests, integration tests, and migration validation
PHPMySQLLegacy SystemsTraceabilityInventorySQLGitLab CI/CD
Company Website
FinTech

Professional Work - Cipax

WhatsApp Finance Assistant

Built a Laravel-based accounting workflow that integrates Twilio and OpenAI APIs to capture financial transactions from WhatsApp messages using natural language.

Focus:

  • •Laravel business logic
  • •WhatsApp-based workflow automation
  • •OpenAI and Twilio integrations
  • •Structured accounting operations from natural language input
LaravelFilamentPHPMySQLOpenAI APITwilioWhatsAppDocker
Company Website
Product

Personal Project

TallyNorth

A full-stack personal finance platform for cash flow projection, multi-currency accounts, recurring expenses, and credit card installment tracking.

Focus:

  • •Backend API design
  • •Financial logic
  • •Modern full-stack architecture
  • •Product thinking
Next.jsTypeScriptFastAPIPostgreSQLSQLAlchemyTailwind CSSshadcn/ui
Live App
Academic

Academic Project

Intelligent Investment Decision System

A decision support system for financial markets using machine learning models on time series data.

Focus:

  • •Data preprocessing
  • •Model experimentation
  • •Evaluation
  • •Software packaging
PythonPyTorchSQLiteDockerMachine LearningTime Series
Read Thesis PDF

Technical Skills

Backend & Data

  • PHP
  • Laravel
  • MySQL
  • PostgreSQL
  • REST APIs
  • SQL Optimization
  • Data Modeling
  • Migrations

Quality & Infrastructure

  • PHPUnit
  • Integration Tests
  • GitLab CI/CD
  • Docker
  • Git
  • Linux

Frontend & Web

  • JavaScript
  • TypeScript
  • Next.js
  • React
  • Tailwind CSS
  • Bootstrap
  • jQuery
  • WordPress

AI & Automation

  • OpenAI API
  • Twilio API
  • Workflow Automation
  • NLP Integrations

Engineering Highlights

CI/CD for Critical Legacy Systems

Designed GitLab CI/CD validation workflows for production PHP/MySQL systems, including unit tests, integration tests, migration validation, and checks against database schema snapshots.

GitLab CI/CDPHPUnitMigration validation

SQL & Performance

Designed tables, refined queries, and improved reporting and dashboard views for data-heavy operational workflows involving inventory, traceability, and production data.

SQLIndexesTraceability

Legacy Modernization

Modernized interfaces within a legacy system from Bootstrap 2 and jQuery 1.7 to Bootstrap 5 and jQuery 3.x.

BootstrapjQueryMaintainability

Business Workflow Automation

Built automations and integrations that transform manual business processes into structured software workflows.

OpenAI APITwilioAutomation

Experience

Apr 2025 - Present

Full Stack Developer

Serfe

  • •Develop and maintain PHP/MySQL business applications and WordPress websites for external clients.
  • •Build production intranet modules for recipes, batch/lot traceability, inventory movements, stock transfers, and supply control.
  • •Work with client stakeholders to analyze operational problems, design technical solutions, implement changes, and validate releases.
  • •Improve reliability through data modeling, versioned migrations, PHPUnit, integration tests, database schema snapshots, GitLab CI/CD workflows, and SQL optimization.
Jan 2024 - Apr 2025

Full Stack Developer

Cipax

  • •Built and maintained a Laravel 10 accounting management system using FilamentPHP, MySQL, Docker, JavaScript, and Bootstrap.
  • •Developed accounting workflows, current accounts, internal dashboards, and business logic modules.
  • •Integrated Twilio and OpenAI APIs to record financial transactions from WhatsApp messages using natural language.
  • •Improved production systems with a focus on usability, stability, and maintainability.

Interested in building reliable software for business processes?

I'm open to backend-focused full stack roles involving business logic, data-intensive systems, legacy modernization, automation, and integrations.

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