Technology Stack

⚙️

Backend

Node.js
Scalable server-side runtime for handling API requests and data processing
🖥️

Frontend

React + TypeScript
Modern, type-safe interface for volunteers and administrators
🗄️

Database

PostgreSQL
Enterprise-grade relational database for metadata and search indices
☁️

Storage

Cloudflare
The best option for global content delivery with enterprise-grade security and lightning-fast access worldwide
🖧

Compute

Google Cloud Instance
The most secure cloud platform - the same infrastructure that hosts YouTube and Gmail
🤖

AI Development

Claude Sonnet 4.5
Advanced AI model powering the speedy development of the whole system
🙏

Teffilah & Good Deeds

Divine Providence
No matter how good the technology is, we will not succeed without help from the Holy One.

🔄 Development Principles

We believe in two core development principles that ensure the system is reliable and well-suited for our volunteers

🤝

Agile Development

We build in short cycles and adapt the system based on volunteer feedback. Instead of building for a full year only to discover it doesn't work, we build small pieces, test with real volunteers, and continuously improve.

⚙️

Twelve-Factor Methodology

A proven methodology for building reliable, scalable systems. These principles ensure the system remains stable as it grows from 5 to 20 to 50+ volunteers, with fewer failures and faster fixes.

👥 Volunteer-Powered Development: Dozens of Contributors Working Together

🎯 Volunteer-Centric System Architecture

This entire system is built around managing and coordinating dozens of volunteers who work across all aspects of the project. From transcription and tagging to quality control and content review, every feature of our platform is designed to support this large volunteer community and ensure their work is meaningful, efficient, and properly coordinated.

👥
Volunteer Management
Platform designed for dozens of contributors
📊
Work Coordination
Task distribution and progress tracking
Quality Assurance
Multi-level volunteer review process
🤝
Community Support
WhatsApp groups and peer assistance

🧠 Development Team

We are a team of hands-on software developers, AI experts, infrastructure specialists, and DevOps engineers with many years of experience in building large scale systems, inspired by Reb Shlomo Carlebach and driven by a shared motivation to bring this project to life. The technological lead of the project is Aminadav Glickstein, a devoted Chassid of Reb Shlomo Carlebach with over 20 years of experience, who has developed more than 120 applications. If this project succeeds, our hope and tefillah is that all the Torah within it will come alive and shine, and this vision is what motivates our entire team.



🚀 Advanced AI Implementation Details

Development Agent
Claude Sonnet 4.5
Primary AI model for system development and coding assistance
Semantic Search Engine
OpenAI Embedding Model
Advanced embedding technology for understanding semantic meaning and context
Search Precision
Vector Similarity Matching
Multi-dimensional semantic analysis for accurate content retrieval
Language Processing
Natural Language Understanding
Supports Hebrew, English, and Yiddish query processing

System Architecture

🤖

AI-Powered Semantic Search

Using advanced embedding technology, the system understands the semantic meaning of queries and matches them with the most relevant Torah teachings. Users can ask questions in natural language, and the AI finds the Torah segments that best answer their questions — going beyond simple keyword matching to understand context and meaning.

AI-Powered Search System

Carlebach Archive Search
Audio 94% match
Joy in the Tefillah - Lecture from 1978
"Music is the language of the soul, when we sing we connect..."
Tefillah Music Joy
Video 89% match
The Power of Song - Teaching 1982
"Every nigun carries within it the deepest tefillos..."
Nigun Spirituality
🤖 AI Embedding Technology
  • AI-powered semantic search using embeddings
  • Natural language query understanding
  • Contextual relevance matching
  • Multi-parameter search (tags, topics, language)
  • Segment-level precision

Volunteer Management Platform

Volunteer Dashboard
18
Active
45GB
This Month
92%
Quality
Audio File #A1234 - Lecture on Teshuvah
Duration: 47min • Assigned to: Sarah K.
65% Complete
Video File #V5678 - Shabbat Stories
Duration: 23min • Available for assignment
  • Work distribution dashboard
  • Quality control workflow
  • WhatsApp support group
  • Progress tracking & analytics

🎯 Volunteer-First User Experience: Designed for Ease & Efficiency

🚀 Zero Technical Barriers - Maximum Impact

The most important thing for success is the volunteer experience. Therefore, the system will be built to be easy to use, fast to work with, and require no technical knowledge.

The success of this project depends entirely on making it effortless for volunteers to contribute. Every design decision prioritizes volunteer experience — from lightning-fast performance to intuitive workflows that require zero technical knowledge. If volunteers can't easily use the system, the project fails.

🎯 Our UX Philosophy: "If your grandmother can't use it effortlessly, it needs to be simpler."

📱

Mobile-First Design

Volunteers work primarily on phones and tablets. Every interface is optimized for touch, with large buttons, clear typography, and responsive layouts that work perfectly on small screens.

  • ✓ Touch-optimized interface with large tap targets
  • ✓ Responsive design that adapts to any screen size
  • ✓ Offline capability for uninterrupted work
  • ✓ Voice input for transcription tasks

Lightning Performance

Volunteers' time is precious. The system loads instantly, responds immediately, and never keeps volunteers waiting. CloudFlare's global CDN ensures fast access from anywhere.

  • ✓ Sub-2-second page load times globally
  • ✓ Instant audio/video streaming with no buffering
  • ✓ Real-time auto-save prevents data loss
  • ✓ Progressive loading for large files
🧠

Zero Learning Curve

No technical background required. The interface uses familiar patterns, clear language, and intuitive workflows that volunteers understand immediately.

  • ✓ One-click task assignment and submission
  • ✓ Visual progress indicators and clear next steps
  • ✓ Built-in help tooltips and guidance
  • ✓ WhatsApp integration for instant support
🎨

Elegant Simplicity

Clean, uncluttered interface focuses attention on the work. No distractions, no confusion — just the essential tools volunteers need to do their sacred work effectively.

  • ✓ Minimalist design with clear visual hierarchy
  • ✓ Consistent interaction patterns throughout
  • ✓ Accessibility compliant for all users
  • ✓ Dark/light mode for comfortable long sessions

📋 Typical Volunteer Workflow - 3 Simple Steps

1️⃣
Receive Assignment

WhatsApp notification → Click link → Audio/video loads instantly → Work begins

2️⃣
Complete Work

Listen → Tag → Submit → Auto-save ensures no data loss

3️⃣
Get Next Task

One-click to receive next assignment → Seamless continuation

💪 Volunteer Operation Model - The Heart of Our System

🌟 Success Depends on Our Volunteer Community

The entire Carlebach Complete project will succeed because of our future dedicated volunteer network. Every search result we envision, every categorized teaching we plan, every tagged segment we anticipate will exist because volunteers will invest their time and spiritual understanding. This system will be built by volunteers, for the preservation of Rabbi Carlebach's legacy, with technology serving as the infrastructure that will support their sacred work.

Note: This describes our future vision and operational plan. The volunteer community and processing workflows outlined here represent what we will build and implement, not current operations.

20
Active Volunteers
at any given moment
3
Month Cycles
average volunteer duration
7
Monthly Recruitment
new volunteers needed
40GB
Per Volunteer
monthly processing target

Key Roles & Quality Assurance

👤 Tagging Volunteers
Quality Control Team
💬 Support Community
📋 Project Managers
Quality Assurance Process
1
Volunteer Training & Guidelines
2
Peer Review System
3
Supervisor Final Approval
4
AI Consistency Validation

Infrastructure & Budget - Two Options

We offer two infrastructure approaches to meet different needs and preferences. Both options provide the same core functionality with different trade-offs in cost, scalability, and maintenance.

☁️

Cloud Hosting

Scalable & Maintenance-Free
Upfront Cost $0
$450 /month
CloudFlare Storage $300
Database & System $100
AI Models Usage $50
📍
Server Location
Google Data Center, Tel Aviv
👥
Simultaneous Users
Unlimited
🔒
Security Level
Enterprise-grade CloudFlare
Performance
Global CDN, 99.9% uptime
🔄
Updates & Maintenance
Automatic, zero downtime
📈
Scalability
Instant scaling as needed
💾
Backup & Recovery
Automated daily backups
🌍
Global Access
Fast worldwide access
🛠️
Technical Support
24/7 enterprise support
24-Month Total
$10,800
✅ Advantages
  • No upfront investment
  • Unlimited user capacity
  • Zero maintenance burden
  • Automatic updates & patches
  • Professional 24/7 support
  • Instant scalability
⚠️ Considerations
  • Higher ongoing monthly cost
  • Requires internet connectivity
  • Data hosted externally
🏢

On-Premises

Local Control & Ownership
Upfront Cost $2,500
Server Hardware $1,200
Firewall & Security $600
Hard Drives (20TB+) $700
$50 /month
AI Models Usage $50
📍
Server Location
Carlebach Foundation server room
👥
Simultaneous Users
Up to 25 users
🔒
Security Level
Enterprise-grade (same level)
📈
Scalability
Requires hardware upgrade or migrate to cloud
Ongoing Expenses
Electricity + Internet only
24-Month Total
$3,700
($2,500 upfront + $50×24 months)
✅ Advantages
  • Lower 24-month total cost
  • No monthly service fees
  • One-time hardware investment
⚠️ Considerations
  • $2,500 upfront investment
  • Limited to 25 simultaneous users
  • Hardware failure responsibility
  • Limited scalability

📊 Detailed Side-by-Side Comparison

Feature ☁️ Cloud Hosting 🏢 On-Premises
Upfront Investment $0 $2,500
Monthly Cost $450 $50
24-Month Total $10,800 $3,700
Server Location Google Data Center, Tel Aviv Foundation server room
Simultaneous Users Unlimited Up to 25
Security Level Enterprise-grade Enterprise-grade
Uptime Guarantee 99.9% SLA No guarantee
Scalability Instant, unlimited Hardware dependent / migrate to cloud later
Disaster Recovery Must be configured Must be configured
Global Access Speed Fast via CDN Fast via CDN
Hardware Failures Provider responsibility Foundation responsibility
Energy Costs Included in price ~$20-30/month extra
Data Ownership Foundation owns, hosted externally Complete physical control

💡 Our Recommendation

We recommend the On-Premises option for this project because:

  • Long-Term Sustainability: As a non-profit project intended to run for many years, minimizing ongoing costs is critical for long-term viability
  • Cost Efficiency: $3,700 total (24 months) vs. $10,800 for cloud — saving $7,100 that can be directed to other Foundation priorities
  • Sufficient Capacity: 25 simultaneous users is adequate for our planned volunteer operations (20 active volunteers at any moment)
  • Same Core Benefits: We can achieve most cloud advantages (CDN, security, global access) with on-premises infrastructure at significantly lower cost
  • Resource Preservation: Unlike for-profit businesses where cloud saves labor costs, this non-profit project benefits more from conserving financial resources
  • Migration Flexibility: At any point in the future, we can easily migrate to cloud if needs change — this decision is not permanent or critical

Note: While cloud hosting is best practice for profitable businesses (to save labor and effort), this non-profit project serving a specific volunteer community benefits more from the substantial cost savings of on-premises infrastructure. We retain full flexibility to migrate to cloud later if the project scales beyond initial plans.

Implementation Timeline

Month 1 December 2025

Foundation Phase

  • Upload all digital materials (20TB)
  • Recruit initial volunteer cohort
  • Infrastructure setup & testing
Processing Target: 800GB
Month 2 January 2026

System Launch

  • Deploy volunteer management platform
  • Establish quality control workflows
  • Launch WhatsApp support community
  • Begin systematic tagging operations
Processing Target: 800GB
Month 3-24 Feb 2026 - Jan 2028

Ongoing Operations

  • Continuous volunteer recruitment (7/month)
  • Sustained processing operations (800GB/month)
  • Weekly quality assurance reviews & reporting
  • Monthly board progress updates
  • System optimization & AI model improvements
  • Backup verification & disaster recovery testing
Monthly Target: 800GB × 22 months
Completion January 2028

Full Archive Online

20TB
Processed
100%
Tagged
Searchable

Project Management & Security

Project Leadership

Project Director Foundation Board Appointee
Technical Lead AI Systems Specialist
Volunteer Coordinator Community Manager

Reporting & Oversight

Weekly Progress reports to Project Director
Monthly Board presentation with metrics
Quarterly Financial review & budget adjustment

Data Security & Legal Compliance

🔐
Intellectual Property
All materials owned by Carlebach Foundation, usage rights secured
🛡️
Data Protection
End-to-end encryption, GDPR compliant, access logging
💾
Disaster Recovery
3-2-1 backup strategy, tested recovery procedures
👥
Access Control
Role-based permissions, volunteer NDAs, audit trails
Advanced Data Protection Measures
🎯
Restricted Access
Each volunteer has access ONLY to materials assigned to them - no cross-access to other content
🚫
Download Prevention
Volunteers cannot download or transfer any files - all work done within secure platform
🔑
One-Time Signed Keys
Each session uses unique, time-limited signed authentication keys that expire automatically
🎥
Video Protection
Videos cannot be shared, recorded, or accessed outside the secure platform environment

Expected Impact - Powered by Volunteer Dedication

🙏 The Volunteer-Driven Impact

Every benefit below is made possible by the collective effort of dozens of volunteers who understand that they are participating in something much larger than technology — they are preserving and making accessible the spiritual treasures of Rabbi Shlomo Carlebach for future generations. Their dedication transforms raw digital files into a living, searchable repository of wisdom.

🎓

Educational Access

Foundation scholars can instantly locate specific teachings and themes across decades of content

🔍

Research Capability

Advanced search enables thematic research and cross-referencing of Rabbi Carlebach's teachings

🛡️

Preservation

Secure, redundant cloud storage ensures the teachings are preserved for future generations

Efficiency

What once took hours to find manually hopefully will be accessible in seconds through intelligent search

Risk Mitigation & Alternatives

Volunteer Shortage Partnership with Yeshiva's
Technical Issues 24/7 CloudFlare & Google support, backup systems, disaster recovery
Budget Overrun Monthly monitoring, board approval for changes, cost alerts
Quality Concerns Multi-level review process, AI validation, expert oversight