Frontend Developer Jobs in Allentown, PA (NOW HIRING)

  POSITION TITLE: Pro Bono Front-End PWA Developer – Audio-Guided Payment Kiosk (Haiti Solar Initiative) ORGANIZATION TYPE: Non-Profit / International Development & Renewable Energy EMPLOYMENT / POSITION TYPE: Pro Bono / Volunteer (Project-Based) LOCATION: Remote (Flexible Hours) DURATION & TIME COMMITMENT: 3–4 Weeks | ~15–20 Hours Total (~4–5 Hours/Week) COMPENSATION: Volunteer / Unpaid Pro Bono (Portfolio Build & Social Impact) JOB CATEGORY: Information Technology / Software & Web Development / International Relief ABOUT THE PROJECT & MISSION We are deploying 200-Watt modular solar hubs across rural communal sections in Haiti to provide off-grid solar power, satellite internet, and access to essential services. To support local micro-finance borrowers, we are launching "Kès Pèman"—a touchscreen cash loan-repayment app running on budget Android tablets at off-grid solar kiosks. Because many rural borrowers have varying literacy levels, the app uses visual Haitian Gourde currency graphics, large touch targets, and pre-recorded Haitian Creole voice prompts (⁠.mp3⁠) instead of dense text. Furthermore, because satellite and cellular connectivity in remote mountain communes can be intermittent, the app operates on a 100% offline-first architecture, caching cash transactions locally in IndexedDB and automatically syncing with payment servers when the signal returns. POSITION SUMMARY We seek a skilled Pro Bono Front-End Developer to assemble pre-scoped modules (HTML5/JS, React, Vue, or Flutter) into a functional, full-screen Progressive Web App (PWA). All backend specs, wireframes, UI graphics, Haitian Creole ⁠.mp3⁠ audio files, offline database scripts, and mock REST API endpoints have already been created and prepared for immediate developer integration. KEY RESPONSIBILITIES & SCOPE OF WORK  Touch Interface Development: Assemble a touch-friendly single-page layout (landscape mode) optimized for budget Android tablets.  Camera QR Scanner: Connect tablet camera hardware to scan borrower QR codes and load mock loan profiles.  Audio & Visual Input Logic: Wire currency button taps (100, 250, 500, 1,000 HTG) to update running totals on screen and trigger corresponding Haitian Creole ⁠.mp3⁠ voice prompts.  Offline-First PWA Setup: Implement a Service Worker (Cache-First strategy) to store all HTML, CSS, JS, bill images, and audio assets for 100% offline execution.  IndexedDB Offline Queue: Integrate a local transaction queue using IndexedDB to store payment payloads during network outages, with auto-sync listeners when internet connectivity is restored.  Full-Screen Manifest: Configure ⁠manifest.json⁠ and viewport locks (⁠user-scalable=no⁠, full-screen kiosk display).  Code Hand-Off: Deliver clean, commented source code to a designated GitHub repository along with a brief 1-page deployment guide. REQUIRED SKILLS & QUALIFICATIONS  Front-End Development: 2+ years of experience with HTML5, CSS3, JavaScript (ES6+), React, Vue, or Flutter.  Asynchronous Web & REST APIs: Proficiency using ⁠fetch⁠ / Axios to format and send JSON payloads to REST APIs.  Media Handling: Familiarity with browser HTML5 Audio APIs and camera hardware integration (WebRTC or HTML5 QR libraries).  Version Control: Experience using Git and GitHub for project delivery.  PWA / Offline Awareness (Plus): Basic understanding of Service Workers, IndexedDB, or Progressive Web Apps is preferred. DAY-ONE PROVIDED ASSETS We respect your volunteer time and will provide complete starter assets prior to your kickoff: 1. Audio Directory: Pre-recorded Haitian Creole ⁠.mp3⁠ files for all bill values, confirmation prompts, and system alerts. 2. Visual Assets: High-resolution PNG graphics of Haitian Gourde notes (100, 250, 500, 1,000 HTG). 3. Pre-Written Code Modules: Starter scripts for the Service Worker cache (⁠sw.js⁠), IndexedDB sync engine (⁠offline-db.js⁠), and Web App Manifest (⁠manifest.json⁠). 4. API Endpoint & Credentials: Mock REST API endpoint URLs and test JSON payload formats. 5. Remote Hardware Access: Remote access (via AnyDesk/TeamViewer) to a test Android tablet if physical testing is needed. PROJECT MILESTONES  Week 1: Review starter assets, establish GitHub repo, build single-page touch layout & QR scanner.  Week 2: Integrate ⁠.mp3⁠ audio triggers for bill taps, configure Service Worker cache, and wire IndexedDB offline queue.  Week 3: Connect submit flow to mock REST API, perform connection-drop testing (offline queueing & auto-sync).  Week 4: Verify ⁠manifest.json⁠ full-screen kiosk execution on tablet and complete GitHub code hand-off.