Front-end developer

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.

Please submit your resume, GitHub profile link, or a brief portfolio showcasing relevant web or mobile development projects.

Contact Email: hand2triumph@gmail.com

Organization Website: hand2triumph.carrd.co