Full Stack Developer Asunción 
Name: Oscar Ferraro
Date of birth: 13‑10‑1977
Residence: Asunción - Paraguay
Nationality: Argentinean - Italian
Mobile: (+595) 985 740 745
Mail: oscar@oferraro.com
Languages: English and Spanish
Download: PDF
WEB DEVELOPER (PHP FULL-STACK)
I am a Full-Stack Web Developer (PHP) and Linux Administrator with more than 20 years of experience (since 2003).
Core expertise:
Backend & Frontend Development: PHP, Python, Java, Node.js, JavaScript, TypeScript, React, etc.
Scripting & Automation: Bash scripting
Systems Administration & Security: Linux server administration, IT security
I have contributed to a wide range of projects, from small applications to large-scale systems, including CRMs, online newspapers, e-commerce platforms, management systems, entertainment, healthcare, and coupon/discount solutions.
I am also passionate about teaching, with over 10 years of experience as an instructor in PHP, Linux, and IT Security at Red Hat, IBM, and several leading Latin American institutes and universities.
Backend & Frontend Development: PHP, Python, Java, Node.js, JavaScript, TypeScript, React, etc.
Scripting & Automation: Bash scripting
Systems Administration & Security: Linux server administration, IT security
I have contributed to a wide range of projects, from small applications to large-scale systems, including CRMs, online newspapers, e-commerce platforms, management systems, entertainment, healthcare, and coupon/discount solutions.
I am also passionate about teaching, with over 10 years of experience as an instructor in PHP, Linux, and IT Security at Red Hat, IBM, and several leading Latin American institutes and universities.
Favorite tools and technologies
OTHER TOOLS & TECHNOLOGIES
Testing & APIs: Unit testing, Facebook API, Pusher, APCO, MangoPay, Mercado Pago.
Programming Languages: Java, Python, Delphi, Visual Basic.
Frontend Frameworks: Angular, React, Vue.
Mobile & Hybrid Apps: Ionic (Cordova, Capacitor), React Native (iOS, Android), PWA, TypeScript.
CMS & E-commerce: WordPress, Joomla, Drupal, WooCommerce, PrestaShop, Magento 1 & 2.
Backend Frameworks: CodeIgniter, Kohana, Zend, Laravel, Symfony (I & II), Yii.
Operating Systems: Ubuntu, Red Hat (RHEL), CentOS, Fedora, FreeBSD.
Virtualization & Containers: XEN, VirtualBox, VMWare, Vagrant, Docker.
SEO & Marketing: SEO, SEM.
Agile Methodologies: Scrum, Kanban.
Programming Languages: Java, Python, Delphi, Visual Basic.
Frontend Frameworks: Angular, React, Vue.
Mobile & Hybrid Apps: Ionic (Cordova, Capacitor), React Native (iOS, Android), PWA, TypeScript.
CMS & E-commerce: WordPress, Joomla, Drupal, WooCommerce, PrestaShop, Magento 1 & 2.
Backend Frameworks: CodeIgniter, Kohana, Zend, Laravel, Symfony (I & II), Yii.
Operating Systems: Ubuntu, Red Hat (RHEL), CentOS, Fedora, FreeBSD.
Virtualization & Containers: XEN, VirtualBox, VMWare, Vagrant, Docker.
SEO & Marketing: SEO, SEM.
Agile Methodologies: Scrum, Kanban.
PROFESSIONAL EXPERIENCE
Frontend Developer – React / TypeScript
Part of a cross-functional team (2 backend devs, 2 frontend devs, QA, Tech Lead, PO) building apps to report and monitor product delivery status.
Develop front-end features with React, TypeScript, Sass/SCSS, Zustand, Amiga framework, implementing feature flags (GrowthBook) and unit tests.
Ensure code quality with Stryker, Sonar, Husky, ESLint, monitor performance via AppInsights/Grafana, and manage CI/CD with GitHub pipelines.
Collaborate using Scrum/Kanban, design prototypes in Figma, and leverage AI tools to improve efficiency.
Boats Group (04-2023 - 10-2023)
Full Stack Developer – Node.js / React / TypeScript
Worked in a 3-developer full-stack team on internal systems and customer-facing yacht sales portals.
Developed and maintained features using Node.js, React, TypeScript, HTML/JavaScript, and legacy systems.
Ensured code quality with Jest and Playwright, and deployed via AWS and Jenkins pipelines.
Collaborated on system design, bug fixing, and performance improvements using MySQL, MongoDB, RabbitMQ, and Redux.
Science4Tech (09-2022 - 04-2023)
Full stack developer
Built a clinical trials management app from scratch, collaborating in a team of 4 developers + 1 tech lead.
Applied Domain-Driven Design (DDD) and Hexagonal Architecture to ensure scalability, maintainability, and clear separation of concerns.
Developed backend services in Java (Spring Boot) with PostgreSQL, deployed on AWS.
Contributed to the frontend with AngularJS and TypeScript, ensuring smooth integration with backend APIs.
Ensured quality and reliability through unit tests (JUnit, Jest), end-to-end testing (Playwright), and automated CI/CD pipelines.
Tech stack: Java (Spring Boot), PostgreSQL, AngularJS, TypeScript, AWS, JUnit, Jest, Playwright, Pipelines
Tennders (04-2022 - 09-2022)
Software Engineer / Team Lead
At Tennders, I worked with the following technologies: PHP (Symfony), MySQL, MongoDB, Elastic, Node.js, Next.js, React, TypeScript, Docker, and Playwright.
I was responsible for leading one developer in the office and managing a remote international team of four developers. My role involved both technical development and coordination tasks.
I contributed to the company's internal tools as well as its main logistics and marketplace system, ensuring scalability, performance, and alignment with business needs.
European Union, JRC (Joint Research Centre) (12-2020 - 04-2022)
Full Stack Developer
Worked as part of a 3-developer team on mobile applications and backend systems, using Ionic (Angular), iOS, Android, MySQL, Firebase, Node.js, TypeScript, PHP (Laravel), AWS, and Docker.
I was mainly responsible for internal systems and contributed significantly to the development of a public flood statistics system.
Orbit (Freelance) (04-2020 - 12-2020)
Mobile Developer
Contributed as a developer in the PriceShoes mobile app (a large shoe retail store) within a team of ~15 developers.
Led the development of the Detoke app, a multifunctional platform for roadside assistance, food delivery, and package delivery.
Delivered cross-platform mobile apps (iOS & Android) using Ionic + Angular.
Worked across the full stack with MySQL, Firebase, Node.js, TypeScript, PHP (Laravel).
Contributed to cloud infrastructure and deployment using AWS & Docker.
Tech stack: Mobile Apps (Ionic · Angular) · iOS · Android · MySQL · Firebase · Node.js · TypeScript · PHP (Laravel) · AWS · Docker
MGS (07-2019 - 04-2020)
Full-Stack Developer
Sole developer working with PHP (Laravel), MySQL, React, React Native, AWS, Docker, TypeScript, Jest, PHPUnit, Cypress, and TeamCity.
Contributed to the ImproveWell system, a platform for real-time feedback, supporting continuous improvement and daily innovation in health and care.
Developed both frontend and backend components, ensuring high performance, reliability, and maintainability.
Implemented automated testing and CI/CD pipelines to ensure quality and smooth deployments.
Tech stack: PHP (Laravel) · MySQL · React · React Native · AWS · Docker · TypeScript · Jest · PHPUnit · Cypress · TeamCity
Edrans (11-2018 - 07-2019)
Full-Stack Developer
Worked in a team of two full-stack developers, primarily supporting Letgo on their website and CMS.
Developed and maintained features using PHP, MariaDB, Vue.js, React.js, and AWS.
Ensured smooth integration between frontend components and backend services.
Contributed to system stability, performance improvements, and client-specific customizations.
Tech stack: PHP · MariaDB · Vue.js · React.js · AWS
Getfinancing (05-2017 - 11-2018)
Full-Stack Developer
Worked in a team of three full-stack developers on a payment gateway system integrating lenders for financing.
Developed and maintained backend services using PHP, Python (Django & Flask), MariaDB, MongoDB, and AWS.
Contributed to frontend development using React and TypeScript.
Maintained and enhanced a CMS plugin built with pure JavaScript, ensuring compatibility with multiple CMS platforms.
Focused on system stability, integration, and performance improvements across the gateway and plugin.
Tech stack: PHP · Python (Django · Flask) · MariaDB · MongoDB · AWS · React · TypeScript · JavaScript
Werfenlife (01-2017 - 05-2017)
Full-Stack Developer
Sole developer responsible for migrating a legacy system integrating company data access from SAP to modern web technologies.
Collaborated on a mobile app project primarily used by sales staff on tablets.
Worked across the full stack with Socket.IO, PHP, MariaDB, Node.js, React, Ionic, Angular, TypeScript, jQuery, and AWS.
Improved system reliability, maintainability, and integration with SAP services.
Contributed to both backend services and frontend interfaces for internal web and mobile applications.
Tech stack: Socket.IO · PHP · MariaDB · Node.js · React · Ionic · Angular · TypeScript · jQuery · AWS
Duplexmarketing (07-2016 - 01-2017)
Full-Stack Developer
Worked in a team of two developers, primarily building marketing websites for online promotions of major brands.
Developed frontend and backend features using PHP, MariaDB, React, jQuery, and AWS.
Ensured responsive and high-performing websites tailored to client marketing campaigns.
Collaborated closely with designers and marketing teams to implement brand-specific requirements.
Tech stack: PHP · MariaDB · React · jQuery · AWS
Prospectos Online (08-2015 - 07-2016)
Full-Stack Developer
Sole developer responsible for creating, updating, and maintaining the application for searching and displaying pharmacy product prospects online.
Managed backend and frontend development using PHP (CodeIgniter & Laravel), MariaDB, Angular, jQuery, Node.js, and AWS.
Handled server administration, deployment, and security, ensuring system reliability and performance.
Implemented features to improve user experience and streamline content management for pharmacy products.
Tech stack: PHP (CodeIgniter · Laravel) · MariaDB · Angular · jQuery · Node.js · AWS
JustSomeCode (05-2013 - 02-2015)
Full-Stack Developer
Sole developer responsible for designing, developing, and maintaining the Eat-Today food delivery website, allowing users to order from bars and restaurants in Malta.
Developed backend and frontend functionality using PHP (Laravel & CodeIgniter) and MySQL.
Managed server environments on Ubuntu and CentOS, including deployment, configuration, and security.
Ensured high performance, reliability, and smooth user experience for online ordering.
Tech stack: PHP (Laravel · CodeIgniter) · MySQL · Ubuntu · CentOS
Haud Systems / 42 Telecom (07-2012 - 05-2013)
components.professionalExperience.position
Led the development of a new reporting and configuration system for a shield system used by major mobile companies in Europe, building on the legacy system.
Designed and implemented a custom PHP framework from scratch to support system functionality and scalability.
Developed backend and frontend features using PHP, MySQL, JavaScript, and jQuery.
Ensured smooth integration with existing legacy systems and improved maintainability and performance.
Tech stack: PHP · MySQL · JavaScript · jQuery
Mediabit (04-2010 - 04-2011 (contractor))
Full-Stack Developer
Part of a team of 4 full-stack developers, responsible for building an e-commerce website to sell car spare parts nationwide.
Managed Ubuntu servers, including deployment, configuration, and security.
Developed backend and frontend features using PHP (Kohana) and Joomla CMS, collaborating closely with other developers.
Ensured high performance, reliability, and a smooth user experience for the e-commerce platform.
Tech stack: PHP (Kohana) · Joomla CMS · Ubuntu
Red Hat (10-2008 - 04-2010)
Global Linux Instructor: Red Hat Linux
In charge of teaching official Red Hat courses in Latin America.
Setting up training environment, check/correct material, take exams
Netintek (01-2005 - 10-2008)
CTO · Full Stack Developer · Linux administrator (Debian y Suse)
PHP · MySQL · PostgreSQL.
Linux administrator (Debian & SUSE)
Linux Administration: installation, deployment, configuration, security.
Development and administration of E-mail marketing systems - newsletters.
PHP Developer.
SEO: Organic / Google Ads
Trustation (12-2003 - 01-2005)
Full Stack Developer · Linux administrator
PHP
Linux (Red Hat · Mandrake): deployment · configuration · security · teaching
Poder Judicial (09-1998 - 12-2003)
Developer · Customer service · Technician
Delphi Developer (Desktop systems): Messaging network system · Computers stock management system · court records / files system etc
TEACHING EXPERIENCE
Web Development Instructor2023 - 2023
Pompeu Fabra University
Institution: Pompeu Fabra University, Spain
Courses Taught:
• Web Development fundamentals
• PHP programming and best practices
• JavaScript and modern frontend development
• Backend development practices
Focus: Modern web development methodologies combining both frontend and backend technologies.
Courses Taught:
• Web Development fundamentals
• PHP programming and best practices
• JavaScript and modern frontend development
• Backend development practices
Focus: Modern web development methodologies combining both frontend and backend technologies.
PHP Instructor2011, 2015 - 2011, 2015
CentralTech
Institution: CentralTech
Courses Taught:
• PHP Web Development
• MySQL Database Management
Focus: Web application development using PHP and MySQL.
Courses Taught:
• PHP Web Development
• MySQL Database Management
Focus: Web application development using PHP and MySQL.
PHP, Linux & IT Security Instructor2010, 2012 - 2010, 2012
EducacionIT
Institution: EducacionIT
Courses Taught:
• PHP/MySQL Development
• IT Security & Cybersecurity
• jQuery and Frontend Development
Responsibilities:
• Course content design and development
• Curriculum planning
• Student assessment and guidance
Courses Taught:
• PHP/MySQL Development
• IT Security & Cybersecurity
• jQuery and Frontend Development
Responsibilities:
• Course content design and development
• Curriculum planning
• Student assessment and guidance
Linux Instructor2011 - 2011
IBM
Institution: IBM
Training Programs:
• Ubuntu Linux Administration
• Network Administration for Technical High Schools
Focus: Enterprise-level Linux training and networking fundamentals.
Training Programs:
• Ubuntu Linux Administration
• Network Administration for Technical High Schools
Focus: Enterprise-level Linux training and networking fundamentals.
Linux & PHP/MySQL Instructor2011 - 2011
Proyecto Programar
Institution: Proyecto Programar
Courses Taught:
• Linux System Administration
• PHP/MySQL Web Development
Focus: Practical programming skills and system administration.
Courses Taught:
• Linux System Administration
• PHP/MySQL Web Development
Focus: Practical programming skills and system administration.
Linux Instructor2011 - 2011
Xtech
Institution: Xtech
Specialization:
• Debian-based Linux Administration
• System Configuration and Management
Focus: Debian Linux ecosystem and administration practices.
Specialization:
• Debian-based Linux Administration
• System Configuration and Management
Focus: Debian Linux ecosystem and administration practices.
Linux & PHP Instructor2006 - 2008, 2010
Linux College
Institution: Linux College
Courses Taught:
• PHP/MySQL Development
• IT Security & Ethical Hacking
• Linux Career Development Path
Focus: Comprehensive Linux education and web development skills.
Courses Taught:
• PHP/MySQL Development
• IT Security & Ethical Hacking
• Linux Career Development Path
Focus: Comprehensive Linux education and web development skills.
Linux Seminar Speaker2004 - 2004
Centro Comercial e Industrial de Chivilcoy
Event: Centro Comercial e Industrial de Chivilcoy
Seminar Topics:
• Linux Installation and Setup
• Open Source Software Alternatives
• GNU Project and Philosophy
• GPL License and Legal Aspects
Focus: Introduction to Linux and open source ecosystem for business professionals.
Seminar Topics:
• Linux Installation and Setup
• Open Source Software Alternatives
• GNU Project and Philosophy
• GPL License and Legal Aspects
Focus: Introduction to Linux and open source ecosystem for business professionals.
Linux Instructor2003 - 2004
Trustation
Institutions: Trustation, EXO, Universidad de Palermo, Ceitech, Caterpillar, ONTI, and others
Linux Distributions:
• Trustix Linux
• Debian GNU/Linux
• Mandrake Linux
• Red Hat Linux
Course Topics:
• Linux Networking & Security
• Web Programming
• Linux Kernel
• PHP Development
• Specialized Linux seminars (Migrating to Linux, Linux for Beginners, Linux Servers)
Linux Distributions:
• Trustix Linux
• Debian GNU/Linux
• Mandrake Linux
• Red Hat Linux
Course Topics:
• Linux Networking & Security
• Web Programming
• Linux Kernel
• PHP Development
• Specialized Linux seminars (Migrating to Linux, Linux for Beginners, Linux Servers)
ACADEMIC STUDIES
Programmer Analyst Career
Universidad Católica de La Plata: 01-2001 - 1-2006.
Incomplete Degree (3rd year completed, 4th year attended).
ADDITIONAL COURSES
Comprehensive professional development through continuous learning and certification programs spanning over two decades of technology advancement.
AngularJS Intensive Course
Web Development
07-2015 - 09-2015
ITMaster - Escuela Davinci
AngularJS intensive training focused on modern web development
AngularJSHTML5CSS
Web Design and Mobile Design
Web Development
04-2015 - 08-2015
Escuela Davinci
Complete web and mobile design course covering UX/UI principles and responsive development
PhotoshopUX/UIHTML5CSS3Responsive DesignMobile First
RH184 Red Hat Enterprise Linux Virtualization
System Administration
09-12-2008 - 10-12-2008
Red Hat
Cert ID: 805008155135323
Enterprise virtualization with XEN hypervisor technology
VirtualizationXENRed Hat Enterprise Linux
RH253 Red Hat Linux Networking and Security Administration
System Administration
16-11-2008 - 21-11-2008
Red Hat
Cert ID: 805008155135323
Advanced networking and security administration with Red Hat Enterprise Linux
Linux AdministrationNetwork SecurityRed Hat Enterprise
RH133 Red Hat Linux System Administration
System Administration
13-10-2008 - 17-10-2008
Red Hat
Cert ID: 805008155135323
Fundamental Red Hat Enterprise Linux system administration
Linux AdministrationRed Hat Enterprise
Oracle Database Administration
Database
03-2007 - 06-2007
Oracle
First level Oracle Database Administration certification
Oracle DBADatabase Management
Java Programming
Programming
11-2006 - 12-2006
Programming Institute
Java and J2SE programming fundamentals
JavaJ2SE
CCNA - Cisco Certified Network Associate
Networking
03-2004 - 03-2005
Cisco
Comprehensive Cisco networking certification program
Cisco NetworkingNetwork ConfigurationRouter Management
Linux Career Certification
System Administration
02-2004 - 05-2004
Linux College
Complete Linux administration course certified by UTN University
LinuxSystem Administration
Security and Hacking
Security
02-2004 - 03-2004
Linux College
Cybersecurity and ethical hacking fundamentals
SecurityEthical HackingPenetration Testing
Web Programming with PHP
Web Development
01-2004 - 02-2004
Programming Institute
PHP web development and server-side programming
PHPWeb ProgrammingServer-side Development
C Programming
Programming
04-2003 - 10-2003
Programming Institute
C programming fundamentals with Borland C compiler
C ProgrammingBorland C
Visual Basic Programming
Programming
04-2002 - 08-2002
Bs Training Center
Microsoft Visual Basic development with Microsoft Tools
Visual BasicMicrosoft Development
Borland Delphi Programming
Programming
04-2002 - 12-2002
Programming Institute
Object-oriented programming with Borland Delphi
DelphiObject-oriented Programming
Borland Pascal Programming
Programming
04-2001 - 12-2001
Programming Institute
Pascal programming fundamentals with Borland compiler
PascalBorland Pascal
Professional Typing Course
Professional Skills
08-1998 - 12-1998
Training Center
Professional typing and keyboard skills development
TypingKeyboard Proficiency