For a total of 6 years, I worked in 2 systems development companies, plus 10 years as a freelancer, mainly with coding and implementation of critical systems such as MMN Systems (Multi Level Marketing). front-end and back-end coding, coding of corporate web sites and e-commerce, implementation of applications with communication between financial corporations, such as banks following FEBRABAN manuals and standards, implementation of RESTful API's such as Shopify, Facebook and Instagram, Twitter, Google, Tumblr, among others ... Implementation of authentication APIs using the OAuth2 standard, implementation of systems and web sites based on Django, Zend Framework (current Laminas Project). Advanced experience with technologies such as Python, PHP, MySQL, PostgreSQL, CSS, JavaScript, Doctrine, Html, JQuery, intermediate experience in Java. Experience with AWS services (EC2, S3, etc.), Cloudflare and Docker.