Airlink

Digital connectivity simplified

Overview

Airlink is a programmable connectivity platform that enables users and developers to provision, manage, and monetize eSIM-based mobile data globally

Built as an API-first infrastructure layer, Airlink abstract the complexity of telecom integrations and provides a simple interface for:

• eSIM provisioning
• Plan management
• Usage tracking
• Billing and payments

The platform is designed to serve:

• Individuals needing seamless global connectivity
• Businesses managing distributed teams or customers
• Developers embedding mobile data into applications, devices, or services

Core Idea

Airlink act as:

Connectivity-as-a-Service (CaaS)

Similar to how modern platforms abstract payments and messaging, Airlink abstract mobile network access into programmable interface.

Key Capabilities

• Global eSIM provisioning
• API-first integration for developers
• Built-in wallet and billing system
• Usage monitoring and analytics

Vision

To become the connectivity layer for the internet economy, enabling:

• Borderless communication
• Embedded connectivity in apps and devices
• Scalable telecom infrastructure across Africa, EMEA, and beyond

Positioning

Airlink sits at the intersection of:

• Telecom infrastructure
• Fintech (payments & billing)
• Developer platforms (API & integrations)

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MVP Architecture

1. Core Service

API Backend

The Spinal cord

The central system coordinating all operations and external integrations.

Why Go: No debate here

• High perfomance (network-heavy system)
• Excellent concurrency model (for provisioning, billing, webhooks)
• Strong ecosystem for backend systems

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2. Data Layer

PostgreSQL (Primary DB)

Reliable. Simple. Scalable

Used for:

• Users & Accounts
• eSIM records
• Plans
• Orders & Transactions

Redis (Cache Layer: Optional)

Improves performance for frequently accessed data

Used for

• Plans caching
• Sessions
• Rate limiting

Object Storage

Critical component

Use Cloudflare R2 for:

• QR codes storage
• Activation payloads
• Static assets

3. Frontend

Stack: Vite + React

Core Features:

• User authentication (Signup, Login, Password Reset, & Identity Verification)
• Purchase eSIM
• View QR code
• Monitor usage

4. Mobile App (Optional for MVP)

Start with:

• PWA (Progressive Web App)

Later

• Native apps (Android / iOS)

5. External Services

eSIM Provider

Primary integration point for:

• eSIM provisioning
• Profile management
• Activation

Payment Gateway

• Paystack
• Flutterwave
• SquadCo

Email/SMS (Transactional)

• SendGrid
• Twilio
• SquadCo

6. API Design

Auth

POST /auth/register
POST /auth/login
POST /auth/refresh
PUT  /auth/request-password-reset
POST /auth/reset-password

Plans

GET /plans
GET /plans/:id

eSIM

POST /esim
GET  /esim/:id
GET  /esim/:id/qr

Orders

POST /orders/esim

Wallet

GET  /wallet
POST /wallet/topup

7. Deployment Stack

MVP Infrastructure

• Backend: Go
• Database: Managed PostgreSQL
• Cache: Redis
• Storage: Cloudflare R2

Hosting Options

• Render (cloud-friendly)
• AWS (market dominant)
• Oracle Cloud (cost-effective)
• DigitalOcean

8. MVP Stack Summary

Layer	Tech
Backend	Go (modular monolith)
Database	PostgreSQL
Cache	Redis (optional)
Storage	Cloudflare R2
Frontend	Vite + React
Payments	Payment Gateway
eSIM	Provider API
Infra	Simple cloud setup

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9. Milestones Roadmap

Week 1

• Project setup
• Database schema

Week 2-3

• Core API structure
• Basic endpoints
• Authentication system

Week 4

• eSIM provider integration
• Webhook handling

Week 5

• Order flow implementation
• Billing (wallet system)

Week 6

• Frontend integration
• QR code delivery

Week 7

• Testing & bug fixes
• Deployment

Week 8

• Launch

MVP Build Order Checklist

1. Database schema
2. Models + repos layer
3. API structure (routers + middlewares + handlers) and basic endpoints
4. Auth service
5. Billing service (wallet)
6. Plans service
7. eSIM provider service
8. Order service
9. Frontend integration (Vite + React)