Marcus Delgado

Profile

Senior PHP Developer with 9 years building and scaling web applications across e-commerce, SaaS, and fintech domains. Specializes in Laravel and Symfony frameworks, RESTful API architecture, and MySQL performance tuning. Reduced average API response time by 62% at current employer and led a team of four developers through a zero-downtime microservices migration.

Work Experience

Senior PHP DeveloperMar 2020 - Present

Vantara Commerce, Austin, TX

Architected a Laravel-based multi-tenant SaaS platform serving 1,200+ merchants, cutting onboarding time from 3 days to 4 hours by automating provisioning workflows.
Refactored legacy MySQL queries and introduced Redis caching, reducing average API response time from 820 ms to 310 ms and lowering server costs by $28,000 annually.
Mentored 3 junior developers through weekly code reviews and pair-programming sessions, raising team PR approval rate from 61% to 89% within 6 months.

PHP DeveloperJun 2017 - Feb 2020

Brightloop Digital, Dallas, TX

Built a Symfony 4 REST API consumed by iOS and Android clients with 400,000 monthly active users, achieving 99.97% uptime over 18 months.
Integrated Stripe and PayPal payment gateways, processing $4.2 million in monthly transactions with PCI-DSS-compliant token handling.
Automated regression testing with PHPUnit, increasing code coverage from 34% to 78% and reducing post-release bug reports by 55%.

Junior PHP DeveloperAug 2015 - May 2017

Nexbridge Solutions, Houston, TX

Developed 14 client WordPress and WooCommerce sites, delivering all projects on schedule and generating $180,000 in agency revenue.
Migrated a monolithic PHP 5.6 application to PHP 7.2, cutting memory usage by 40% and eliminating 22 known deprecation warnings.
Implemented automated deployment via GitHub Actions and Deployer, reducing release cycle from bi-weekly to continuous delivery.

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