Open to opportunities

Lucas Sastre

@lucassastre

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Senior Backend Developer focused on scalable PHP platforms and integrations.

Argentina

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What I'm looking for

I seek roles where I can lead backend and integration projects, drive modernization, mentor teams, and deliver measurable business impact at scale.

I am a Senior Backend Developer with 18+ years building scalable PHP applications and leading full-cycle web development for clients in the Americas and Europe. I specialize in backend architecture, third-party integrations (REST/SOAP), performance optimization and platform modernization.

I founded and lead Onírico Sistemas where I implemented processes that accelerated deliveries by 35%, reduced downtime by 25% and improved response times by up to 30%. I have integrated over 110 third-party APIs for logistics clients and developed a custom framework based on CodeIgniter and Laravel applying DDD and AI principles.

I promote clean code, automation and containerized deployments (Docker, CD/CI), mentor junior engineers and drive cross-functional collaboration to deliver business impact and reliable, high-performance solutions for international customers.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Developer

Current

Onírico Sistemas

Jan 2007 - Present (19 years 2 months)

Founded and led full-cycle development of custom web applications for clients in the Americas and Europe, improving delivery speed by 35% and reducing downtime by 25% through backend optimizations and process automation.

PHP Laravel CodeIgniter MySQL API Integration Performance Optimization Docker CI CD DDD

PHP Web Developer

Primus Solutions LLC

Apr 2013 - Nov 2025 (12 years 7 months)

Developed and modernized scalable PHP backends and integrations, increasing system performance and reliability by 35% and integrating 110+ third-party logistics APIs to reduce manual processing by 40%.

PHP Symfony Laravel REST SOAP API Integration MySQL Performance Tuning

PHP Web Developer

Tecnofinance SRL

Jul 2012 - Mar 2013 (8 months)

Built multiplatform online payment web applications with CodeIgniter, achieving 99% uptime and improving application reliability by 30% through codebase optimizations and third-party integrations.

PHP CodeIgniter Payment Integration MySQL Reliability Engineering API Integration & QA

Freelance PHP Developer

Kinexo S.A.

Jul 2010 - May 2012 (1 year 10 months)

Designed PHP backend solutions with Symfony and Laravel, optimizing MySQL queries to reduce query times by 40% and improving system efficiency and adaptability.

PHP Symfony Laravel MySQL Query Optimization Backend

Freelance PHP Developer

TrackStudio

Mar 2008 - Jun 2011 (3 years 3 months)

Developed responsive PHP/MySQL websites and optimized databases to achieve 30% faster loading times while delivering projects ahead of schedule.

PHP MySQL JavaScript Responsive Design Database Optimization Project Delivery

Freelance PHP Developer

Websa100

Mar 2010 - Oct 2010 (7 months)

Built dynamic CodeIgniter websites for Spanish clients, improving website performance by 20% through backend and frontend optimizations and QA-driven delivery.

PHP CodeIgniter MySQL HTML CSS AJAX Performance Optimization & QA