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Robert UserRU
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Robert User

@robertuser26

Senior Backend Software Engineer at Growth Acceleration Partners, modernizing PHP systems and developing AI agents and RAG workflows.

El Salvador
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At Growth Acceleration Partners, where I was assigned to Self.inc, I designed, implemented, and supported integrations with vendors including Plaid and Melissa Data. I also contributed to a PHP 5.6-to-8.0 migration, OPcache implementation, and LaunchDarkly feature flag capabilities.

At Wizeline, where I was assigned to Etsy, I engineered and maintained PHP, Symfony, and MySQL backend services and supported the migration of internal REST API endpoints from v2 to v3. I also developed and maintained PHPUnit test suites and helped resolve API integration and production issues.

At Searchable Sellers, I engineered a data-driven platform for CSV processing and property information management, including dataset import, validation, search, and filtering. More recently, I’ve been developing and experimenting with AI agents, reusable AI skills, RAG, and agent orchestration, using Claude and GitHub Copilot in AI-assisted development workflows.

Experience

Work history, roles, and key accomplishments

WI

Software Engineer III

Wizeline

Dec 2020 - Jul 2022 (1 year 7 months)

Engineered and maintained backend services using PHP, Symfony, and MySQL for a large-scale U.S. e-commerce API platform. Supported the migration of internal REST API endpoints from v2 to v3 architecture.

TE

Software Engineer

TBox Education

May 2018 - Nov 2020 (2 years 6 months)

Designed and delivered functionality for a web-based educational platform serving students and educators. Built backend and frontend functionality using PHP, MySQL, JavaScript, jQuery, and Bootstrap.

IP

Software Developer

Independent Development Projects

Designed and developed custom business applications across multiple industries using PHP, Laravel, MySQL, PostgreSQL, JavaScript, and React, including inventory, sales, CRM, business automation, insurance, vehicle valuation, data processing, REST APIs, and GPS tracking solutions using Traccar.

Education

Degrees, certifications, and relevant coursework

US

Universidad de El Salvador

Bachelor's, Computer Systems Engineering

2009 - 2016

Pursued a degree in Computer Systems Engineering from 2009 to 2016.

JS

Joyas de Ceren School

Bachelor's, Accounting

2006 - 2008

Completed a Bachelor's in Accounting and a Programmer Analyst Diploma from 2006 to 2008.

GI

GitHub

GitHub Copilot Certification, AI-assisted Development

Earned the GitHub Copilot Certification.

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