I am a senior full-stack developer with over 10 years of experience in building custom web applications. I take pride in my ability to lead teams and projects, ensuring a focus on code quality and effective solutions that drive business impact.

ANTONIO NICOLÁS DIÁNEZ FERNÁNDEZ

I am a senior full-stack developer with over 10 years of experience in building custom web applications. I take pride in my ability to lead teams and projects, ensuring a focus on code quality and effective solutions that drive business impact.

Available to hire

I am a senior full-stack developer with over 10 years of experience in building custom web applications. I take pride in my ability to lead teams and projects, ensuring a focus on code quality and effective solutions that drive business impact.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Spanish; Castilian
Fluent
Catalan; Valencian
Fluent
English
Fluent
German
Beginner

Work Experience

CTO & Founder at Golembyte
October 1, 2021 - Present
Technically responsible for the development and proper functioning of the IT systems of several companies. Comprehensive application development using Laravel, Angular, and Ionic frameworks.
CTO & Founder at Budders
March 1, 2022 - August 4, 2025
Technical Manager responsible for developing a comprehensive microservices application using Laravel and Angular in an AWS environment. Managed routing, cloudfront, EC2 servers, MySQL databases, S3 storage, load balancers, Redis cache, and a queuing system with SQS. Implemented OAuth gateways connecting three applications with microservices inside a VPC with subnet isolation. The system consisted of four independent microservices.
CTO at EveryBind
October 1, 2019 - August 4, 2025
Comprehensive application development in Laravel, Angular, and Ionic, and mobile development in Swift and Android. Maintenance of Java and Spring Boot microservices application with continuous integration and Kubernetes, troubleshooting, enhancements, and production deployment management.
CTO at Klarenz
January 31, 2018 - August 4, 2025
Full Stack Developer role with responsibilities including application development using Laravel, Angular, and Ionic.
Senior Programmer at TravelCompositor
September 30, 2017 - August 4, 2025
Web programming including website maintenance and enhancements using Oracle Webcenter Sites CMS, Java, JSP, and JavaScript (jQuery). Developed UI component library in Javascript and JQuery. Automated tasks with Gulp. Created REST and SOAP APIs, unit tests with Junit and Mockito. Managed version control with Subversion and Git and used Jira for project management and Sonar and PMD for quality control.
Senior Programmer at Plexus Tech
November 30, 2016 - August 4, 2025
Migrated a hotel management desktop application from Delphi to Java and SpringBoot. Maintained web application in PHP, JQuery, and HTML5 and delivered website improvements including multilingual support.
CEO at TeddyByte
August 1, 2016 - August 4, 2025
Supported and maintained the Idiso CMS used primarily by Meliá, fixing issues and adding features using Java, J2EE, JQuery, SQL, and TOAD. Used Scrum agile methodologies and managed tasks via JIRA. Version management with Subversion.
Programmer at Idiso Hotel Distribution
December 31, 2015 - August 4, 2025
Developed internal content management projects and server control panel in Java, JavaScript, JSP with Ajax calls and servlets. Improved SEO and migrated real estate website from Java/JSP to PHP and JavaScript (jQuery), using HTML5, CSS3, and Bootstrap. Database modifications in MySQL. Version management via Subversion.
CTO & Founder at Golembyte
October 1, 2021 - Present
Technically responsible for the development and proper functioning of the IT systems of several companies. Comprehensive application development in Laravel, Angular, and Ionic.
Technical Manager at Budders
March 1, 2022 - August 4, 2025
Comprehensive development of an application based on microservices with Laravel and Angular front-end in an AWS environment involving multiple EC2 servers, MySQL databases, cache with redis, S3 storage, load balancers, and SQS queue system. Three applications connected via OAuth to gateways linking microservices in different subnets inside the same VPC. Maintenance and restructuring of a Vue.js/Nuxt project connected to a WordPress API managed with Docker, with improvements in performance and deployment workflows.
CTO at EveryBind
October 1, 2019 - August 4, 2025
Comprehensive application development using Laravel, Angular, Ionic, Swift, and Android. Maintenance of a Java and Spring Boot microservices application with continuous integration and Kubernetes, managing improvements and troubleshooting for smooth production deployment.
CTO at Klarenz
January 1, 2018 - August 4, 2025
Full Stack Developer.
Senior Programmer at TravelCompositor
September 1, 2017 - August 4, 2025
Web programmer for website maintenance and enhancements using Oracle Webcenter Sites CMS with Java, JSP, JavaScript (JQuery), and version control with Subversion. Developed component library for UI management, task automation with Gulp, issue resolution, and development of B2C and B2B evolutions. Created REST APIs and SOAP services, unit testing with Junit and Mockito, and quality control using Sonar and PMD tools.
Senior Programmer at Plexus Tech
November 1, 2016 - August 4, 2025
Migrated hotel maintenance management desktop application from Delphi to Java and SpringBoot. Maintained web application using PHP, JQuery, HTML5, and developed new features. Managed company website on WordPress adding multilingual support.
CEO at TeddyByte
August 1, 2016 - August 4, 2025
Supported and maintained Idiso CMS primarily used by Meliá, fixing issues and adding features using a proprietary Java/J2EE framework, JQuery, SQL, and database management with TOAD. Used Scrum and JIRA for agile task management. Version management with Subversion.
Programmer at Idiso Hotel Distribution
January 1, 2015 - August 4, 2025
Developed Internal Content Management Project and server control panel using Java, JavaScript, JSP, and Ajax. Improved SEO, migrated real estate website from Java/JSP to PHP/JavaScript (JQuery), HTML5, CSS3, Bootstrap, and enhanced MySQL database. Version management with Subversion.
Technically responsible for the development and proper functioning of the IT systems of several companies
October 1, 2021 - Present
Oversight of IT systems and development across multiple projects; Laravel, Angular and Ionic application development.
CTO & Founder at Golembyte
March 1, 2022 - October 27, 2025
Comprehensive development of a microservices-based application with Laravel and Angular in an AWS environment, including route system, CloudFront, multiple EC2 servers, MySQL databases, S3, load balancers, Redis caching, and SQS-based queuing. Four independent microservices with OAuth gateways connected via secret keys; all within a single VPC with subnet separation.
CTO & Founder at Budders
December 1, 2021 - October 27, 2025
Comprehensive application development in Laravel, Angular, and Ionic; project/server management with Forge; CI/CD; maintenance and restructuring of a Vue.js project with Nuxt connected to a WordPress API via Docker; production deployment and pre-production environment setup.
Technical Manager at EveryBind
October 1, 2019 - October 27, 2025
Comprehensive application development in Laravel, Angular, and Ionic; Swift and Android involvement; maintenance of a Java/Spring Boot microservices-based application with CI and Kubernetes; responsible for improvements, troubleshooting, and smooth production deployment.
Full Stack Developer at Klarenz
January 1, 2018 - October 27, 2025
Full-stack development work including frontend and backend tasks.
Web Programmer at TravelCompositor
September 1, 2017 - October 27, 2025
Website maintenance and enhancements using Oracle WebCenter Sites CMS (Java, JSP, jQuery); Subversion-based version control; developed a component library for the UI in JavaScript/jQuery; implemented REST/soap interactions.
Senior Programmer at Plexus Tech
November 1, 2016 - October 27, 2025
Migrated a hotel maintenance management desktop app from Delphi to Java/SpringBoot; PHP/jQuery/HTML5 web maintenance; WordPress multilingual support; general site maintenance.
CEO at TeddyByte
August 1, 2016 - October 27, 2025
Support and maintenance of the Idiso CMS; bug fixes and feature additions using a proprietary Java/J2EE/JQuery framework; SQL/database work; Agile methodologies (Scrum); Jira and Subversion usage.
Programmer at IDISO Hotel Distribution
January 1, 2015 - October 27, 2025
Internal Content Management Project and server control panel; Java, JavaScript, JSP; Ajax; SEO improvements; migration of real estate site from Java/JSP to PHP/JavaScript; MySQL database modifications.
Senior Freelance Developer / Technical Lead at Freelance
February 1, 2018 - September 1, 2021
End-to-end development of custom web and mobile applications. Responsible for the full lifecycle: requirements gathering, technical design, data modeling, development, testing, deployment, and production support.
Senior Developer (Java / JS / PHP) at Plexus Tech
January 1, 2016 - January 1, 2018
New features and maintenance for Barceló booking platforms and corporate websites, along with frontend development using JavaScript, jQuery, and HTML5. Responsible for creating UI component libraries and task automation.
Web Developer at Dinalogic
August 1, 2016 - November 1, 2016
Migration of a maintenance desktop application from Delphi to Java/Spring Boot and maintenance of web applications in PHP, jQuery, and HTML5.
Developer at Idiso Hotel Distribution
July 1, 2015 - April 1, 2016
Support and evolution of an in-house CMS for large hotel chains, focusing on development in Java and jQuery.
Developer at Grupo Piñero
January 1, 2014 - January 1, 2015
Development of an internal CMS and server monitoring panel, including the migration of a real-estate website.

Education

FP Medium Degree at Microcomputer Systems and Networks
January 1, 2011 - January 1, 2013
Higher Vocational Training at Web Programming
January 1, 2013 - January 1, 2015
Master's Degree at Cybersecurity Management, Ethical Hacking, and Offensive Security
January 1, 2020 - January 1, 2022
FP Medium Degree at Microcomputer Systems and Networks
January 1, 2011 - January 1, 2013
Higher Vocational Training Web Programming at Web Programming
January 1, 2013 - January 1, 2015

Qualifications

FP Medium Degree Microcomputer Systems and Networks
January 1, 2011 - January 1, 2013
Higher Vocational Training Web Programming
January 1, 2013 - January 1, 2015
Master's Degree in Cybersecurity Management, Ethical Hacking, and Offensive Security
January 1, 2020 - January 1, 2022
Master's Degree in Cybersecurity Management, Ethical Hacking, and Offensive Security
January 1, 2020 - January 1, 2022
Master's Degree in Cybersecurity Management, Ethical Hacking and Offensive Security
January 1, 2020 - January 1, 2022
Higher National Diploma in Web Application Development
January 1, 2013 - January 1, 2015
Vocational Training in Microcomputer Systems and Networks
January 1, 2011 - January 1, 2013

Industry Experience

Computers & Electronics, Software & Internet, Travel & Hospitality, Professional Services, Media & Entertainment

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
See more