Independent Software Engineer

Building Software
That Works.

SaaS Platforms · Web Applications · API Systems

I design, build, and operate scalable software products for real businesses. From backend architecture to customer-facing interfaces — I handle the full stack, independently and professionally.

I am an independent systems engineer and SaaS developer based in Oran, Algeria. I specialize in designing and building web-based software products — from the database layer and backend APIs through to front-end interfaces and cloud deployment.

My main business activity is operating Software as a Service (SaaS) platforms that I develop myself. Business clients subscribe to my platforms on a monthly basis to access tools that automate and streamline their workflows.

All products I operate are 100% digital software services. Revenue is generated through monthly subscription fees charged to verified business users, with clear pricing, terms of service, and documented service delivery.

5+
Years in Software
SaaS
Primary Business Model
B2B
Customer Profile
100%
Digital Delivery

What I Build

A breakdown of the technical disciplines I work across when building and operating production software products.

01 — Engineering
Systems Architecture

Designing robust backend systems, database schemas, cloud infrastructure, and API layers that power scalable, reliable web applications.

02 — Product
SaaS Development

End-to-end development of Software as a Service platforms — authentication, subscription billing, user dashboards, automated workflows, and analytics.

03 — Integration
API & Webhooks

Building and integrating REST APIs, real-time webhooks, and third-party service connections including payment processors and cloud platforms.

04 — Frontend
Web Application UI

Designing and building customer-facing interfaces with React — from marketing pages to complex multi-role web applications with real-time data.

05 — Infrastructure
Cloud Deployment

Deploying and managing applications on Firebase, Cloudflare Pages, and Render — with CI/CD pipelines, uptime monitoring, and environment management.

06 — Automation
Workflow Automation

Automating repetitive business operations through custom-built software, scheduled jobs, and event-driven webhook systems.

Commercial Software

These are active, commercially operated software products that I have built and continue to maintain. Each generates subscription revenue from verified business customers.

SaaS · B2B Fitness Tech Subscriptions
CheckinHQ

A subscription-based SaaS platform purpose-built for online fitness coaches. CheckinHQ automates the weekly client check-in process — replacing manual spreadsheets and back-and-forth messaging with a structured, branded workflow. Coaches subscribe monthly and gain access to: custom form builders, a client management dashboard, automated check-in reminders, progress tracking analytics, and coach-to-client response tools. Built with React (frontend), Node.js/Express (backend), and Firebase/Firestore (database & auth). Revenue model: monthly SaaS subscription.

Web App Media Tools API Product
Stream Archive Tool

A web application that allows content creators and media organizations to automatically archive Facebook Live streams as permanent video recordings using the Facebook Graph API. Solves the business problem of live content being lost after broadcast. Built with React, Node.js/Express, Firebase Hosting, and Firestore. Delivered as a hosted web service.

Custom Tools Productivity
Bespoke Business Web Tools

Custom-built web applications and internal tools for organizations and small businesses — including document generators, structured form systems, content management utilities, and static web applications. Delivered as fully hosted, production-grade software on Cloudflare Pages or equivalent cloud infrastructure.

Technical Stack

The tools and platforms I use to design, build, and operate production-grade software.

Frontend
  • React.js
  • HTML5 / CSS3
  • JavaScript ES2022+
  • Tailwind CSS
  • Vite
Backend
  • Node.js
  • Express.js
  • REST APIs
  • Webhooks
  • OAuth 2.0
Infrastructure
  • Firebase / Firestore
  • Cloudflare Pages
  • Render
  • Google Cloud
  • GitHub Actions
Integrations
  • Stripe (Payments)
  • Facebook Graph API
  • Firebase Auth
  • SendGrid
  • Google APIs

Business Model Overview

A transparent summary of how my business operates, for the benefit of financial institutions and payment processors reviewing my account.

Revenue Type
Software Subscriptions

Monthly recurring subscription fees paid by business customers for continued access to SaaS platforms I operate. All services are transparently priced, clearly described, and delivered digitally with verifiable usage.

Customer Profile
B2B — Small Business Owners

My customers are small business operators and independent professionals — fitness coaches, content creators, and service providers — who subscribe to my software tools to automate and manage their operations.

Delivery Method
100% Digital, Web-Based

All products are delivered as web-based software. No physical goods or in-person transactions. Access is managed via authenticated user accounts with clearly defined subscription terms.

Transaction Profile
Recurring, Low-Value

Typical charges are monthly subscription fees in the range of $20–$99/month per customer. Predictable, low-risk transaction profile consistent with standard B2B software subscription businesses.

Contact

Name Mahdi
Role Independent Systems Engineer & SaaS Developer
Location Oran, Algeria
Website bdjlmn.com
Entity Type Sole Proprietor — Software Development
Reviewing my business
for onboarding?

I am happy to provide further documentation on my business operations, product architecture, customer agreements, or any other information required for verification. All of my products are legitimate digital software services with clear terms, transparent pricing, and real customers.

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