Lucas Sastre
@lucassastre
Senior Backend Developer focused on scalable PHP platforms and integrations.
What I'm looking for
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
Senior Backend Developer
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 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 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.
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.
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 Web Developer
4R Solutions
Sep 2009 - Mar 2010 (6 months)
Developed web interfaces and applications using PHP, MySQL and AJAX, improving website performance by 20% through targeted optimizations.
PHP Web Developer
Vousys Consulting
Feb 2008 - Jun 2009 (1 year 4 months)
Delivered robust PHP/MySQL application solutions for clients, focusing on reliability and maintainability.
Freelance PHP Developer
Digital Pandemic
Sep 2007 - Dec 2008 (1 year 3 months)
Optimized and maintained PHP websites through code reviews, increasing performance and code quality by 25%.
Education
Degrees, certifications, and relevant coursework
Universidad Nacional del Litoral
Systems Analysis
Completed Systems Analysis studies at Universidad Nacional del Litoral, focusing on information systems and software development.
Universidad Tecnológica Nacional, Regional Santa Fe
Java / Oracle 10g
Completed coursework in Oracle 10g Java Programming at UTN Regional Santa Fe to strengthen database and Java development skills.
Availability
Location
Authorized to work in
Job categories
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