🤝 Non-profit & NGO · C4 Architecture · Pro
Volunteer Management Platform
A platform that matches volunteers to NGO opportunities, tracks hours and issues certificates.
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Drawing diagram…
What this diagram shows
- Volunteers are matched by skills, location and availability
- Attendance is checked in at the event with a QR code
- Verified hours generate certificates automatically
Prompt used
Volunteer platform architecture: volunteers sign up on a web/mobile app with skills and availability; NGO coordinators post opportunities. Services: profile and skills, opportunity listings with a matching service, event check-in with QR codes, hours tracking, and certificate generation. Notifications via email and WhatsApp. Data in PostgreSQL.
Mermaid code
C4Container
title Volunteer Management Platform
Person(vol, "Volunteer", "Finds opportunities")
Person(coord, "NGO Coordinator", "Posts events")
System_Ext(msg, "Email and WhatsApp", "Notifications")
System_Boundary(vp, "Volunteer Platform") {
Container(app, "Volunteer App", "React Native", "Profile and sign-ups")
Container(portal, "NGO Portal", "React", "Opportunities and rosters")
Container(match, "Matching Service", "Python", "Skills, location, time")
Container(events, "Event and Check-in", "Node.js", "QR attendance")
Container(hours, "Hours and Certificates", "Node.js", "Verified hours")
ContainerDb(db, "Platform DB", "PostgreSQL", "Volunteers and events")
}
Rel(vol, app, "Uses")
Rel(coord, portal, "Uses")
Rel(portal, events, "Creates events")
Rel(app, match, "Gets matches")
Rel(match, events, "Opportunities")
Rel(app, events, "Signs up and checks in")
Rel(events, hours, "Attendance")
Rel(hours, msg, "Certificates")
Rel(events, db, "Stores")Related templates
Online Donation Flow
How a donor gives online to an NGO: choosing a cause, paying by UPI or card, and getting a tax-exemption (80G) receipt automatically.
NGO Fund Allocation Sankey
Where an NGO's money comes from and where it goes: donations, grants and CSR funds flowing into programmes, operations and fundraising.
Donor Management Platform
An NGO's fundraising platform: donation pages, donor CRM, recurring giving, tax receipts and impact reporting to donors.
Grant Application Lifecycle
The states of a grant, seen from the NGO applying for it: from concept note to award, reporting and close-out.
Volunteer Onboarding Workflow
How an NGO takes a volunteer from sign-up to first assignment: screening, background check for child-facing roles, training and matching.
NGO Beneficiary Records Schema
A schema for tracking an NGO's beneficiaries and the services they receive across programmes, for impact reporting.