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Hi, I’m Luis Humberto Martínez Flores. I’m a senior front-end developer with 9+ years of experience building high-performing, accessible, responsive, and SEO-optimized websites. I’ve worked remotely on international projects, primarily with teams in the USA and India, and I coordinate our development environments using Docker to ensure smooth collaboration and consistent deployments.…

Luis Humberto Martínez Flores

Front-End Developer, Web Developer, Developer

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Hi, I’m Luis Humberto Martínez Flores. I’m a senior front-end developer with 9+ years of experience building high-performing, accessible, responsive, and SEO-optimized websites. I’ve worked remotely on international projects, primarily with teams in the USA and India, and I coordinate our development environments using Docker to ensure smooth collaboration and consistent deployments.…

Available to hire

Hi, I’m Luis Humberto Martínez Flores. I’m a senior front-end developer with 9+ years of experience building high-performing, accessible, responsive, and SEO-optimized websites.

I’ve worked remotely on international projects, primarily with teams in the USA and India, and I coordinate our development environments using Docker to ensure smooth collaboration and consistent deployments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Spanish; Castilian

Fluent

Work Experience

AI Trainer at Freelance / Independent

June 1, 2025 - June 1, 2025

Evaluate and provide corrections to code generated by AI, by giving prompts and leading to solving real, particular cases related to web technologies like HTML/CSS/JS, and some JS frameworks.

Front-end Web Developer at Concentrix Catalyst

October 1, 2023 - October 1, 2023

Converted designs from Photoshop, Sketch, InVision, and Figma to front-end websites. Implemented WCAG and SEO to improve accessibility and organic traffic. Created full storefront themes for Magento 2.x and customized third-party themes; extended Magento frontend and checkout; integrated modules such as Amasty Mega Menu, Amasty Product Parts Finder, and Mirasvit Search Auto Complete. Trained and mentored a frontend team of 3 developers. Improved page load speed by 15–20% through JS/CSS and asset optimization. Built sites to be cross-browser compatible across mobile, tablet, and desktop, including Chrome, Firefox, Edge, IE, and Safari.

Full-stack Developer at Xaan dia Tecnologías Digitales

May 1, 2015 - May 1, 2015

Developed and maintained a private CMS using PHP, Perl, and SQL. Converted designs from Photoshop to front-end HTML, CSS, and JS, including jQuery-based libraries.