John Simiyu Portfolio

Introduction

John Simiyu

👨‍💻 Simiyu the Software Developer

I'm John Simiyu, known online as Simiyu the Software Developer—a full-stack software developer with a strong focus on pure PHP backend development and API architecture.

My work revolves around building smart, scalable and secure digital solutions, with a passion for crafting backend systems that are clean, maintainable and performance-driven.

Beyond coding, I'm deeply invested in system security—understanding how attacks work so I can design applications that are resilient against real-world threats. My expertise in PHP APIs, data flow optimization and security-focused backend logic enables me to deliver reliable solutions for both web and IoT integrations.

I also believe in sharing knowledge. I'm developing training programs to help other developers master backend development, understand vulnerabilities, and adopt a security-first approach in their work.

Whether I'm building custom APIs, integrating smart devices into cloud systems, or mentoring upcoming developers, my goal is the same: to create solutions that are robust today and future-proof for tomorrow.

Explore some of my work here and connect with me on GitHub, Facebook and LinkedIn at @Simiyu the Software Developer.

📞 Call:
0704 860 427

💬 WhatsApp:
0739 334 082

Paid mentorship Program

3 Days of Focus – PHP Full Stack Developer Training

Build a complete full stack system in just 3 days

💻 Daily hands-on sessions (3hours/day)

🚀 Build real-world projects & sharpen your mindset

💰 Investment: KES 2,500

🔥 Challenge: No Day Off — 3 Days of Relentless Building

How to join:

Click the get started button it will redirect you to my WhatsApp number, then request for 3 days mentorship Program and specify which one you want.

You can also call me directly through my number 0704860427 I will give you the details of how you can join these private classes and get a full stack developer badge.

📅 New intake every month

Get started now

🔥 3 Days of Focus Programs

🚀 No-Code Web Development on cPanel

In 3 Days You Will:

✅ Build a Full Website Without Writing Code

✅ Work Directly on cPanel – No Software Installation Needed

✅ Create & Manage Pages, Blogs, and Contact Forms

✅ Customize Your Design with Professional Templates

✅ Publish Your Site to the Internet in Minutes

✅ Manage Content Easily with a Web-Based Editor

📍 3 Days | 3 Hours Daily | Real Project

📡 Venue: Online via Google Meet

💰 KES 2,500 — One-time Fee

🧠 Challenge: No Day Off – Build, Launch & Go Live in Just 3 Days.

📲 WhatsApp: 0739 434 082

🚀 PHP Full Stack Developer – Beginner Class

Title: What You Need to Know Before Starting Your Software Development Journey

In 3 Days You Will:

✅ Understand the difference between Frontend & Backend

✅ Learn how websites and web apps actually work

✅ Discover the essential tools every developer must know

✅ Understand databases and how they store data

✅ Learn how servers deliver your website to the world

✅ Get a clear roadmap to becoming a professional developer

Note: This is not a coding class — it's a theory-rich, illustration-heavy guide to cut your learning curve by 80%, so you only focus on what truly matters when you start coding.

📍 3 Days | 3 Hours Daily | Real Project

📡 Venue: Online via Google Meet

💰 KES 2,500 — One-time Fee

🧠 Challenge: No Day Off – Build Your Developer Mindset in Just 3 Days.

📲 WhatsApp: 0739 434 082

🚀 PHP Full Stack Developer Training – Direct on cPanel

In Just 3 Days, You Will:

✅ Build & Deploy a Live Registration System

✅ Create Login, User Dashboard & Admin Panel

✅ Work Directly on cPanel – No Local Editors

✅ Deploy Your App to the Internet in Minutes

✅ Manage Databases Seamlessly with phpMyAdmin

📍 3 Days | 3 Hours Daily | 💻 Real Projects – Live Online

📍 Venue: Google Meet

💰 KES 2,500 — One-time Fee

🧠 Challenge: No Day Off – Build, Deploy & Go Live

📲 WhatsApp: 0739 434 082

🚀 PHP Full Stack Development – API Integration Masterclass

In 3 Days You Will:

✅ Understand what APIs are and how they work

✅ Integrate M-Pesa payments into your app or website

✅ Connect your system to Bank APIs for secure transactions

✅ Integrate SMS APIs to send text messages from your app

✅ Add Email API functionality for sending automated emails

✅ Connect your app with other systems' APIs for real-time data and automation

📍 3 Days | 3 Hours Daily | Real Project

📡 Venue: Online via Google Meet

💰 KES 2,500 — One-time Fee

🧠 Challenge: No Day Off – Become API-Savvy in Just 3 Days.

📲 WhatsApp: 0739 434 082

🚀 PHP Full Stack Developer – Ethical Hacking & Security

In 3 Days You Will:

✅ Learn how hackers exploit SQL Injections and how to stop them

✅ Prevent Authentication Bypass attacks

✅ Identify and block Cross-Site Scripting (XSS) attempts

✅ Guard against Cross-Site Request Forgery (CSRF)

✅ Fix Broken Access Control vulnerabilities

✅ Secure File Uploads to prevent malicious files

✅ Protect APIs from Brute Force Attacks

✅ Reduce risk of Sensitive Data Exposure

📍 3 Days | 3 Hours Daily | Real Project

📡 Venue: Online via Google Meet

💰 KES 2,500 — One-time Fee

🧠 Challenge: No Day Off – Learn to Protect Your Apps in Just 3 Days.

📲 WhatsApp: 0739 434 082

Projects

14 Projects Completed

Welcome to My App Showcase

A clean and modern business website template designed to fit any industry. Built with responsive design, intuitive navigation, and customizable features, it serves as a versatile theme for showcasing products, services, or brand identity.

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