Full Stack Developer Knowledge

I have a strong foundation in both front-end and back-end development, allowing me to create complete web applications. My skills include:

Front-end: HTML, CSS, JavaScript, React
Back-end: Node.js, Express.js, MongoDB
Version Control: Git, GitHub
Responsive Design and Cross-Browser Compatibility

Projects:

Personal Website – danieljcubero.com

Portfolio website showcasing professional experience and interactive features.

Built a personal website using HTML and CSS, hosted under a custom domain name.

Added a FAQ section with four key questions,
each accompanied by an audio response, demonstrating integration of multimedia elements.

Included a direct link to resume for recruiters to access professional background.

Designed the site to highlight career experience, technical projects, and personal branding.

Users API Demo – GitHub Repository ASP.NET Core REST API with GET/POST endpoints for user management.

Users API Demo – GitHub Repository

Implemented endpoints for listing and adding users.

Documented project with README for recruiters.

Demonstrates skills in C#, API development, and GitHub collaboration.

Second Phase World Cup Project – GitHub Repository

Full Stack Web Application built for the 2026 World Cup.

Second Phase World Cup Project – GitHub Repository

Designed and developed HTML pages to display tournament maps,
group tables, and country flags for the second phase of the World Cup.
JavaScript for form validation and dynamic behavior.

Integrated Netlify Forms to collect user responses in real time,
demonstrating knowledge of frontend–backend interaction.

Implemented daily updates and deployments,
ensuring the project stayed live and functional throughout the tournament.

Documented the project with a clear README and structured repository for recruiters to review.

Skills demonstrated:

Frontend: HTML, CSS, responsive design, interactive tables and maps.

Backend/Integration: Netlify Forms, data collection workflows.

Deployment: GitHub + Netlify continuous deployment.

Collaboration: Git version control, project documentation.

Family Tree Project – GitHub Repository (github.com in Bing)

Full Stack project combining database design with a web interface.

Family Tree Project – GitHub Repository

Family Tree Web page

Designed and implemented a SQL Server database to collect and organize family information
(names, dates of birth, relationships).

Built a web interface with HTML and CSS to visualize the family tree, deployed via GitHub
Pages.

Structured data into relational tables, ensuring consistency and scalability for future additions.

Applied styling and layout techniques to present the tree clearly, with plans to enhance color and design for better user experience.

Skills demonstrated:

Database: SQL Server, relational modeling, queries, data normalization.

Frontend: HTML, CSS, basic UI design.

Deployment: GitHub Pages for static site hosting.

Collaboration: Git version control, project documentation.

About me:

Cloud & networking expertise: Implemented cloud-based resources and optimized networking devices to improve accessibility and team efficiency.
Junior Web Developer: Hands-on experience with HTML5, CSS3, JavaScript, PHP, MySQL, JSON, and Ajax. Currently building personal projects to strengthen front-end and back-end skills.
9+ years in customer service: Resolved billing inquiries, delivered financial solutions, and provided technical support, consistently achieving high customer satisfaction scores.
Process improvement: Streamlined workflows, reducing handling times by 20% while boosting overall customer satisfaction.
Sales leadership: Designed and delivered training programs that increased sales conversion rates and enhanced team performance.

Experience

Tek-Experts | Tier 2 Azure Networking Support
Nov 2019 – Dec 2025

Maintained and upgraded IPsec VPN tunnels across Cisco, Fortinet, Palo Alto, and Citrix firewalls.
Created and supported Point-to-Site tunnels using Active Directory, Radius, and Azure certificates.
Verified front-end and back-end web applications via Application Gateways and URL routing.
Diagnosed and resolved Layer 4 Load Balancer issues, ensuring high availability.
Troubleshot VWAN and ExpressRoute circuits, resolving critical outages under zero-deadline SLAs.
Conducted Azure Firewall rule reviews and optimized data flow for enterprise clients.

Teleperformance AT&T | Technical Support
Jul 2016 – Aug 2019

Delivered troubleshooting for internet, phone, and IPTV services.
Resolved customer issues efficiently, maintaining high satisfaction ratings.

Sutidora de Empaques Hidráulicos | Sales Agent & Mechanic
Mar 2012 – Jun 2016

Sold and repaired hydraulic equipment, ensuring urgent repairs were completed on time.

Constructora Meco | Fuel Manager
Jan 2009 – Jan 2012

Managed fuel distribution, coordinated diesel requests with Recope, and oversaw maintenance of stations and tanker trucks.

Skills

Cloud Networking: Azure IPsecVPN,P2S, VWAN, ExpressRoute, Load Balancers, Firewalls.
Web Development: HTML5, CSS3, JavaScript, PHP, MySQL, JSON, Ajax.
Customer Service: 9+ years resolving inquiries, billing, and technical support.
Process Improvement: Workflow optimization, reducing handling times by 20%.
Sales & Training: Increased conversion rates through coaching and tailored programs.
Tools & Platforms: Cisco, Fortinet, Palo Alto, Citrix, Active Directory,visual code.
Languages: English (fluent), Spanish (native).

Education:

2022 Az-400 Certification
2016 Cisco CNNA v5
2011 Office 2010 package
2003-2007 Universidad de Costa Rica, incomplete bachelor in Mathematical
1996-2001 Liceo de Belen, High School diploma

Resume:

Full Stack Developer Knowledge

Projects:

Personal Website – danieljcubero.com

Portfolio website showcasing professional experience and interactive features.

Users API Demo – GitHub Repository ASP.NET Core REST API with GET/POST endpoints for user management.

Second Phase World Cup Project – GitHub Repository

Full Stack Web Application built for the 2026 World Cup.

Skills demonstrated:

Family Tree Project – GitHub Repository (github.com in Bing)

Full Stack project combining database design with a web interface.

Skills demonstrated:

Contacto

About me:

Experience

Tek-Experts | Tier 2 Azure Networking Support
Nov 2019 – Dec 2025

Teleperformance AT&T | Technical Support
Jul 2016 – Aug 2019

Sutidora de Empaques Hidráulicos | Sales Agent & Mechanic
Mar 2012 – Jun 2016

Constructora Meco | Fuel Manager
Jan 2009 – Jan 2012

Skills

Education:

Four frequently asked questions with recorded responses:

My Hobbies

Tailoring & Fashion

Music

Resume:

Full Stack Developer Knowledge

Projects:

Personal Website – danieljcubero.com

Portfolio website showcasing professional experience and interactive features.

Users API Demo – GitHub Repository ASP.NET Core REST API with GET/POST endpoints for user management.

Second Phase World Cup Project – GitHub Repository

Full Stack Web Application built for the 2026 World Cup.

Skills demonstrated:

Family Tree Project – GitHub Repository (github.com in Bing)

Full Stack project combining database design with a web interface.

Skills demonstrated:

Contacto

About me:

Experience

Tek-Experts | Tier 2 Azure Networking Support Nov 2019 – Dec 2025

Teleperformance AT&T | Technical Support Jul 2016 – Aug 2019

Sutidora de Empaques Hidráulicos | Sales Agent & Mechanic Mar 2012 – Jun 2016

Constructora Meco | Fuel Manager Jan 2009 – Jan 2012

Skills

Education:

Four frequently asked questions with recorded responses:

My Hobbies

Tailoring & Fashion

Music

Tek-Experts | Tier 2 Azure Networking Support
Nov 2019 – Dec 2025

Teleperformance AT&T | Technical Support
Jul 2016 – Aug 2019

Sutidora de Empaques Hidráulicos | Sales Agent & Mechanic
Mar 2012 – Jun 2016

Constructora Meco | Fuel Manager
Jan 2009 – Jan 2012