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I’m a specialized Full Stack Developer with 5 years of experience as an independent contractor. My core expertise lies in React.js/Next.js and Node.js, but I’ve had the chance to work across a variety of frameworks like WordPress, Salesforce, Shopify, Hugo, and HubSpot to tailor unique solutions for my clients. I enjoy translating design concepts into high-performance applications and integrating third-party services to automate workflows and enhance efficiency. I’m also skilled in performance tuning and SEO best practices to improve usability and visibility. I’m a quick learner, always excited to embrace new technologies, and I’m committed to working closely with clients and teams to ensure successful outcomes.…I’m a specialized Full Stack Developer with 5 years of experience as an independent contractor. My core expertise lies in React.js/Next.js and Node.js, but I’ve had the chance to work across a variety of frameworks like WordPress, Salesforce, Shopify, Hugo, and HubSpot to tailor unique solutions for my clients. I enjoy translating design concepts into high-performance applications and integrating third-party services to automate workflows and enhance efficiency. I’m also skilled in performance tuning and SEO best practices to improve usability and visibility. I’m a quick learner, always excited to embrace new technologies, and I’m committed to working closely with clients and teams to ensure successful outcomes.

Eliezer Barbosa

Full Stack Developer, Front-End Developer, Back-End Developer, +3

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I’m a specialized Full Stack Developer with 5 years of experience as an independent contractor. My core expertise lies in React.js/Next.js and Node.js, but I’ve had the chance to work across a variety of frameworks like WordPress, Salesforce, Shopify, Hugo, and HubSpot to tailor unique solutions for my clients. I enjoy translating design concepts into high-performance applications and integrating third-party services to automate workflows and enhance efficiency. I’m also skilled in performance tuning and SEO best practices to improve usability and visibility. I’m a quick learner, always excited to embrace new technologies, and I’m committed to working closely with clients and teams to ensure successful outcomes.…I’m a specialized Full Stack Developer with 5 years of experience as an independent contractor. My core expertise lies in React.js/Next.js and Node.js, but I’ve had the chance to work across a variety of frameworks like WordPress, Salesforce, Shopify, Hugo, and HubSpot to tailor unique solutions for my clients. I enjoy translating design concepts into high-performance applications and integrating third-party services to automate workflows and enhance efficiency. I’m also skilled in performance tuning and SEO best practices to improve usability and visibility. I’m a quick learner, always excited to embrace new technologies, and I’m committed to working closely with clients and teams to ensure successful outcomes.

Available to hire

I’m a specialized Full Stack Developer with 5 years of experience as an independent contractor. My core expertise lies in React.js/Next.js and Node.js, but I’ve had the chance to work across a variety of frameworks like WordPress, Salesforce, Shopify, Hugo, and HubSpot to tailor unique solutions for my clients. I enjoy translating design concepts into high-performance applications and integrating third-party services to automate workflows and enhance efficiency.

I’m also skilled in performance tuning and SEO best practices to improve usability and visibility. I’m a quick learner, always excited to embrace new technologies, and I’m committed to working closely with clients and teams to ensure successful outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Fluent

Spanish; Castilian

Intermediate

Work Experience

Full Stack Developer at Independent Contractor

March 1, 2020 - June 6, 2024

Design, develop, and maintain responsive web applications and websites using React.js, Next.js, Node.js, Hugo, WordPress, Salesforce, HubSpot, and Shopify; implement modern HTML, CSS (Tailwind, Bootstrap, Styled-Components) and JavaScript (ES6+) practices to ensure cross-browser compatibility, performance, and SEO compliance. Build interactive 3D scenes and visualizations using Three.js and React Three Fiber, integrating models and animations triggered by scroll or user interaction. Convert design mockups into pixel-perfect layouts with HTML, CSS, and modern JavaScript. Integrate external APIs for authentication, payment processing (Stripe, PayPal), and CRM systems, implementing OAuth flows where required. Automate client workflows by connecting Airtable bases to web forms and back-end services using Make and Zapier, minimizing manual processes. Set up Firebase projects (Authentication, Firestore, Functions, Hosting) to accelerate MVP deployment and enable serverless features. Implemen

Full Stack Developer at GM Design

May 1, 2022 - May 1, 2025

Managed company data using Excel spreadsheets to organize project details, client information, and internal processes. Developed and maintained the corporate website using Framer, ensuring a responsive design and streamlined user experience. Designed and built an in-house project management system from scratch using React, Firebase (Firestore, Authentication, Hosting), Firebase Cloud Functions, and Material UI. Designed and implemented automations using Make (Integromat) to streamline communication workflows, connect multiple applications, and generate custom reports. Integrated Pipedrive CRM to centralize lead management and sales tracking. Integrated CompanyCam for on-site photo documentation and project updates. Integrated QuickBooks for financial tracking and consolidation of data from prior tools. Integrated Google Calendar to automate scheduling of tasks and client meetings.

Front End Developer at Metric Marketing

January 1, 2024 - May 1, 2025

Maintain and enhance WordPress websites, while leading all non-WordPress projects on platforms such as Salesforce, Shopify, HubSpot, and Next.js. Conduct performance and SEO audits, produce detailed audit reports, and implement recommendations to optimize site speed, accessibility, and search visibility. Collaborate with designers and marketing strategists to deliver responsive, data-driven experiences tailored to each platform’s best practices.

Front End Developer Intern at Free Software Development Unit (UDSL)

January 1, 2012 - August 31, 2012

Developed a dynamic heatmap visualization tool for Brazil’s Social Security agency, aggregating work-related accident data and rendering it with color-coded markers on an interactive map. Built data pipelines to collect, process, and display accident records in real time, ensuring accurate geographic representation. Performed Linux-based development on Ubuntu and Fedora, leveraging command-line tools, system configuration, and open-source practices. Collaborated with senior developers on version control, code reviews, and coding standards, adopting best practices for maintainable, community-oriented software.

Full Stack Developer at GM Design

May 1, 2022 - May 1, 2025

Managed company data using Excel spreadsheets to organize project details, client information, and internal processes. Developed and maintained the corporate website using Framer, ensuring responsive design and streamlined user experience. Designed and built an in-house project management system from scratch using React, Firebase (Firestore, Authentication, Hosting), Firebase Cloud Functions, and Material UI. Implemented automations with Make (Integromat) to streamline communication workflows, connect multiple applications, and generate custom reports. Integrated Pipedrive CRM for lead management, CompanyCam for on-site documentation, QuickBooks for financial tracking, and Google Calendar for scheduling automation.