Faraja is a 0% interest credit facility that allows users to make purchases via Lipa Na M-PESA and defer payment — typically up to 30 days — without paying interest.

SmartBill Billing System

SmartBill is a full-featured billing, invoicing, and financial operations platform designed for small and medium-sized businesses that need more than simple invoicing. It combines billing, accounting, inventory awareness, and a fast POS-style interface into a single, cohesive system, while also exposing a secure REST API for mobile apps and third-party integrations.

At a business level, SmartBill helps organizations issue invoices, track customer and supplier balances, manage income and expenses, and maintain accurate stock levels, all from one admin dashboard. The system significantly improved billing accuracy and reduced service turnaround time by streamlining financial workflows and eliminating manual reconciliation.

What the System Does (Non-Technical Overview)

• Enables businesses to create and manage invoices for customers, including discounts, taxes, and coupons.

• Tracks what customers owe (receivables) and what the business owes suppliers (payables) in real time.

• Manages income, expenses, and transfers across multiple financial accounts (cash, bank, receivable, payable).

• Maintains inventory and stock levels, ensuring invoices are grounded in real quantities and costs.

• Provides a fast, POS-like billing screen for day-to-day retail or counter sales.

• Generates professional PDF invoices and reports for printing or sharing.

• Exposes a secure API that allows mobile apps or external systems to issue invoices and retrieve financial data.

In practice, SmartBill acts as the financial backbone of a business — from the moment a sale is made, through payment, reconciliation, and reporting.

Technical Architecture & Design (Technical Overview)

SmartBill is built as a monolithic Laravel application with clear domain separation between billing, accounting, inventory, and configuration.

• Backend: PHP 8.2, Laravel 11, Eloquent ORM

• Database: MySQL with relational schemas for customers, suppliers, accounts, transactions, invoices, products, and stock

• Frontend: Blade templates with Bootstrap-based admin UI, AJAX interactions via Axios

• API: RESTful JSON API secured with Laravel Passport/Sanctum, designed for mobile (Flutter) and external integrations

Core domain models include:

• Orders / OrderDetails acting as invoices and line items

• Accounts representing financial buckets (cash, bank, receivable, payable)

• Transactions capturing every financial movement (income, expense, transfer)

• Customers and Suppliers with full transaction histories and balances

• Products with stock levels, pricing, tax, and discount configuration

All billing operations are handled within database transactions to guarantee consistency across invoices, stock adjustments, and financial records.

Key Functional Areas

Billing & Invoicing

• Invoice creation with line items, taxes, discounts, and coupons

• Status handling (pending, completed, refunded)

• PDF invoice generation and printable views

• Coupon system with limits, validity periods, and validation rules

Accounting & Financial Transactions

• Central transaction engine recording income, expenses, and transfers

• Automatic account balance updates

• Financial dashboards showing totals, trends, and summaries

• Clear linkage between invoices and financial entries

Receivables & Payables

• Customer balances and outstanding invoices

• Supplier dues and payment tracking

• Full transaction history per customer or supplier

Inventory-Aware Billing

• Stock levels automatically adjusted per invoice

• Low-stock alerts and reorder thresholds

• Inventory reports exportable to PDF or Excel

Fast POS-Style Interface

• High-speed billing screen optimized for daily sales

• Product search, cart handling, coupon application, and quick checkout

• Designed for retail counters and service desks

Security, Roles & Configuration

• Role-based access control with fine-grained permissions per module

• Business-level configuration for currency, locale, branding, and system behavior

• Secure authentication for both admin users and API consumers

Impact & Results

• Improved billing accuracy by ~20% through automated calculations and validation

• Reduced service turnaround time by ~50% by unifying billing, accounting, and inventory

• Enabled businesses to move from fragmented tools to a single source of financial truth

Why This Project Matters

SmartBill goes beyond a basic POS or invoicing tool. It demonstrates the design and implementation of a real-world billing and accounting engine, capable of supporting daily operations, financial reporting, and future expansion into mobile apps or SaaS offerings.

Micklink is a full-stack project management, time tracking, and invoicing platform designed for agencies and service teams that bill based on time, effort, or fixed project budgets.

1. Presentation Layer (User Experience)

Admin Dashboard

Used by managers and team leads to:

• Create clients, departments, and projects

• Assign tasks and team members

• Track progress, budgets, and productivity

• Generate invoices and reports

Task & Kanban Interface

• Visual Kanban boards for task flow

• Task details with comments, attachments, tags, priorities, and due dates

• “My Tasks” views for individual contributors

Client Portal

• Clients can log in to:

  • View project progress

  • Track invoices and payment status

  • Access relevant documents and reports
    This improves transparency without exposing internal operations.

2. Authentication & Access Control Layer

• Role-based access control using Spatie Permissions

• Roles such as:

  • Admin

  • Team Member

  • Client

• Fine-grained permissions (e.g. manage_projects, manage_invoices, manage_expenses)

• Department-level scoping ensures users only see relevant data

This layer ensures data isolation, security, and accountability across teams and clients.

3. Core Business Domains

   A. Project & Task Management Domain

• Projects support:

  • Hourly or fixed budgets

  • Status tracking (Ongoing, On Hold, Finished, Archived)

• Tasks include:

  • Status, priority, tags, attachments, comments

  • Multiple assignees

• Project progress is calculated dynamically from completed tasks

This domain acts as the operational backbone of the system.

B. Time Tracking Domain

• Time can be logged via:

  • Real-time stopwatch

  • Manual time entry

• Each entry records:

  • Start/end time

  • Duration (minutes)

  • Activity category (development, meeting, design, etc.)

• Calendar and timeline views show work distribution over time

This provides accurate effort tracking, essential for billing and productivity analysis.

C. Billing & Expense Domain

• Invoices can be generated from:

  • Logged time

  • Project summaries

  • Saved reports

• Supports:

  • Taxes, discounts, invoice statuses (Draft, Sent, Paid)

  • PDF invoice generation

• Expenses can be logged separately and tied to projects or clients

This domain connects work done → cost → revenue.

4. Reporting & Analytics Layer

• Multi-dimensional reports grouped by:

  • Department

  • Client

  • Project

  • User

  • Task

• Calculates:

  • Total time

  • Cost (based on user salary and working hours)

  • Productivity and utilization

• Dashboards show:

  • Team workload

  • Project status distribution

  • Invoice health

  • Client-specific insights

This turns operational data into decision-ready insights for leadership.

5. Data Integrity & Architecture Design

• Built as a monolithic Laravel MVC application

• Controllers orchestrate requests

• Heavy query and reporting logic handled in Repository classes

• Consistent use of:

  • Database transactions

  • Soft deletes

  • Permission middleware

• Ensures:

  • Accurate time and billing records

  • Reliable reporting

  • Safe multi-user collaboration

6. Technology Stack (At a Glance)

• Backend: PHP (Laravel)

• Frontend: Blade templates, Bootstrap, Livewire

• Database: MySQL

• Key Capabilities:

  • Kanban boards

  • Stopwatch-based time tracking

  • PDF invoicing

  • Role-based security

  • Advanced reporting

Why This Architecture Works

• Clear separation between projects, time, and billing

• Designed around billable effort, not just task tracking

• Scales from small teams to multi-department agencies

• Supports both internal operations and client transparency

• Strong foundation for future API or SaaS expansion

ProfilePal is a multi-tenant SaaS platform built with Laravel 9 that enables freelancers, job seekers, consultants, and creatives to build professional online presence pages -- including portfolios, digital business cards (vCards), CVs/resumes, appointment booking pages, and blogs -- all without technical skills. The platform is at version 4.0 (released Nov 8, 2025).

It operates on a subscription model with tiered packages, integrating 20+ payment gateways. Each user (tenant) gets a fully isolated website with custom domains/subdomains, themes, languages, and content.

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