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antoniocarlos7

Antonio

@antoniocarlos7

Full Stack Web Developer and Bug Fix Specialist

Spain
Spanish, English, German
About me
I'm a professional Full Stack Web Developer with expertise in fixing website bugs, coding errors, and performance issues across modern web technologies. I specialize in HTML, CSS, JavaScript, React.js, Next.js, Node.js, Express.js, WordPress, WooCommerce, APIs, databases, and server troubleshooting. Whether you're facing a white screen, plugin conflict, frontend or backend bug, responsive design issue, API integration problem, or database error, I provide fast, clean, secure, and reliable solutions with clear communication, quality work, and on time delivery.... Read more

Skills

a
antoniocarlos7
Antonio
Offline • 

See my services

Bug Fixes
I will fix nodejs, API, html, backend bugs, database error, and server issues fast
From$30 / projectMore details
Bug Fixes
I will fix wordpress bugs, plugin issues, woocommerce errors and website problems fast
From$20 / projectMore details

Work experience

Freelance_Web Designer

Full Stack Web Developer and Bug Fix Specialist

Freelance Web Designer

Jan 2020 - Sep 2023 • 3 yrs 8 mos

Working as a Full Stack Web Developer, I specialize in diagnosing and fixing frontend and backend issues for websites and web applications. My daily work includes resolving HTML, CSS, JavaScript, React.js, Next.js, Node.js, Express.js, API integration, database, and server-related errors. I also provide WordPress and WooCommerce troubleshooting, including plugin conflicts, theme customization, white screen issues, performance optimization, responsive design fixes, and security improvements. I collaborate with businesses and individuals to deliver clean, scalable, and maintainable code while ensuring excellent communication, fast turnaround times, and reliable technical support. Every project focuses on improving website performance, functionality, and user experience.

Creative_Agency

Frontend Developer

Creative Agency

Dec 2021 - Mar 2023 • 1 yr 3 mos

Developed responsive and interactive user interfaces using HTML5, CSS3, JavaScript, React.js, and Next.js. My role involved fixing frontend bugs, UI inconsistencies, responsive layout issues, API integration problems, browser compatibility errors, and performance bottlenecks. I worked closely with designers and backend developers to deliver modern, user-friendly websites that met client requirements. Additional responsibilities included optimizing page speed, improving accessibility, debugging production issues, implementing reusable components, and maintaining clean, well-documented code for long-term scalability and maintainability.

CLOUD_DEV

Backend Developer

CLOUD DEV

Feb 2019 - Nov 2022 • 3 yrs 9 mos

Focused on backend development using Node.js, Express.js, REST APIs, SQL, and NoSQL databases. My responsibilities included fixing backend bugs, API failures, authentication issues, database connection errors, server crashes, deployment problems, and application performance bottlenecks. I built secure APIs, optimized database queries, integrated third-party services, implemented authentication systems, and monitored server health to ensure reliable application performance. I collaborated with frontend developers to create stable, secure, and scalable web applications for clients in various industries.