Full-Stack Web Developer for Marketplace Upgrades (OAuth2 / Responsive UI / WebP Optimization)
Upwork

Remoto
•1 hora atrás
•Nenhuma candidatura
Sobre
We’re looking for an experienced Full-Stack or Front-End Developer to upgrade and optimize Swampum.com, a growing community-driven platform for second-hand item exchange. This is a milestone-based project for Q4 2025 focused on improving UX, responsiveness, and performance before our marketing rollout. You’ll be responsible for implementing Google OAuth2 login, improving responsive layouts, redesigning item cards, restoring our sharing feature, and building a WebP image optimization workflow. All work happens in a staging-first environment, with clear documentation, weekly updates, and milestone-based reviews. Your tasks will include: - Implement Google Login (OAuth2) with secure linking and logout functionality. - Overhaul responsive grid layouts across all device sizes. - Redesign item cards to match Swampum’s new UI guidelines. - Restore the “Share These Items” button for user inventories and lists. - Create an automatic WebP image conversion pipeline with fallback for older browsers. - Maintain documentation and changelog for all implemented features. Requirements: - Proven experience implementing OAuth2 / Google Identity -Services in production. - Strong skills in HTML5, CSS Grid/Flexbox, JavaScript/TypeScript. - Experience optimizing layouts and improving Core Web Vitals. - Familiar with image compression, caching, and lazy loading. - Organized, reliable, and proactive communicator. - Comfortable working on milestone-based contracts with review checkpoints. - Must maintain frequent communication (short progress updates every 2–3 days). Nice to have: - Background in community or marketplace platforms. - Experience with Node.js / Express (backend integration). - Awareness of accessibility standards and QA workflows. - Previous experience working with Bitbucket or similar repositories. To apply: - Send a short proposal including: - Links to 2–3 relevant projects (especially with responsive layouts or OAuth2). - Your estimated hours and cost per milestone (we’ll share the full Action Brief for accuracy). - Your availability for November–December 2025 and preferred working hours or time zone. - Shortlisted developers will be contacted for a 30–45 minute interview and will receive the Swampum Action Brief before final quoting. - Please include the word “COCOA” in the last line of your proposal so we can filter your submission from auto-reply candidates.




