Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm William Leonardo da Silva Carvalho Covalen, a Dublin-based web developer with hands-on experience building custom WordPress websites and integrating front-end and back-end technologies. I'm passionate about technology, continuous learning, and collaborating with teams to deliver tailored, scalable solutions in dynamic environments.…

William Leonardo da Silva Carvalho Coval

Web Developer, Programmer, Full Stack Developer, +4





Hi, I'm William Leonardo da Silva Carvalho Covalen, a Dublin-based web developer with hands-on experience building custom WordPress websites and integrating front-end and back-end technologies. I'm passionate about technology, continuous learning, and collaborating with teams to deliver tailored, scalable solutions in dynamic environments.…

Available to hire

Hi, I’m William Leonardo da Silva Carvalho Covalen, a Dublin-based web developer with hands-on experience building custom WordPress websites and integrating front-end and back-end technologies.

I’m passionate about technology, continuous learning, and collaborating with teams to deliver tailored, scalable solutions in dynamic environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Fluent

Work Experience

Quality Expert Reviewer at Altice USA

December 31, 2023 - July 17, 2025

Led the IT onboarding process for new hires, improving integration efficiency. Coordinated support services and provided ongoing assistance with technical tools. Developed institutional websites using JSP, Servlet API, Spring Boot, Hibernate, and MySQL. Gained experience integrating frontend and backend technologies. Reviewed sensitive data according to strict quality and turnaround standards. Managed escalations and responded to law enforcement inquiries following internal policies. Collaborated with policy leads to enhance team knowledge and identified operational improvements across multiple markets.

Web Developer at Self-Employed

June 1, 2021 - Present

Designed and developed custom websites for diverse businesses in e-commerce, personal care, hospitality, and cleaning sectors. Managed the full project lifecycle including client consultation, planning, coding, and deployment. Utilized WordPress, HTML, CSS, and JavaScript to deliver tailored solutions.

Junior Java Developer at Jamhub Solutions

January 31, 2023 - July 17, 2025

Contributed to backend development projects leveraging Java, Spring Boot, and MySQL. Assisted in integrating frontend components and enhancing website functionalities.

Service Desk Onboarding Team Leader at Covalen

July 1, 2024 - Present

Led team organization and daily operations to ensure timely and high-quality guest services. Developed and implemented strategies to improve service efficiency and meet deadlines. Fostered team accountability and enhanced communication skills within a fast-paced environment.

Supervisor at Noonan Services Group

July 31, 2018 - July 17, 2025

Managed team organization and daily operations to deliver timely and high-quality guest services. Developed service delivery strategies to improve efficiency, collaborated with diverse teams, and promoted a culture of teamwork and accountability.

Project Analyst at Dell Technologies

August 31, 2016 - July 17, 2025

Managed projects involving warehouse and manufacturing operations, developed VBA automation tools for performance tracking, and contributed to process improvements and strategic planning.

General Operative at Motorola

August 31, 2008 - July 17, 2025

Performed general operational tasks as part of a manufacturing team.

Warehouse Operative at Transportadora Americana LTDA

August 31, 2009 - July 17, 2025

Responsible for warehouse operations and logistics support.

Self-employed Web Developer at Freelance / Self-employed

June 1, 2021 - November 20, 2025

Developed custom websites for various industries with a strong focus on WordPress leveraging themes, plugins, and customization to deliver tailored solutions. Gained experience integrating frontend and backend technologies. Designed and developed institutional websites using JSP, Servlet API, Spring Boot, Hibernate, MySQL. Led the IT onboarding process for new hires, improving onboarding efficiency. Collaborated with policy leads to share updates and improve team knowledge. Identified opportunities for operational improvements across diverse markets. Managed full project lifecycle: client consultation, planning, coding, and deployment. Tools used: WordPress, HTML, CSS, JavaScript.

Onboarding Team Leader at Altice USA

December 1, 2023 - December 1, 2023

Led the IT onboarding process for new hires, improving integration efficiency. Coordinated support services and provided ongoing assistance with technical tools.

Junior Web Developer at Jamhub Solutions

January 1, 2023 - January 1, 2023

Worked as a junior web developer focusing on frontend and backend; built WordPress-based sites, leveraging themes, plugins, and customization to deliver tailored solutions.

Self-Employed (Freelance Web Developer) at Self-Employed

June 1, 2021 - Present

Developed custom websites for various industries, with a strong focus on WordPress, leveraging themes, plugins, and customization to deliver tailored solutions. Built front-end and back-end using HTML, CSS, JavaScript and Java; collaborated with clients from discovery to deployment.

Junior Web Developer at Jamhub Solutions

October 1, 2022 - January 1, 2023

Developed and maintained WordPress-based websites for clients; implemented themes and plugins; contributed to front-end and back-end integration to deliver responsive and accessible web experiences.

Onboarding Team Lead at Altice USA

October 1, 2022 - December 20, 2023

Led IT onboarding process for new hires, improving integration efficiency. Coordinated support services and provided ongoing assistance with technical tools. Managed escalations and collaborated with policy leads to share updates and improve team knowledge.