Hi, I am

Brian Kareithi

|

Brian Kareithi

About Me

Brian Kareithi

Results-Driven Cybersecurity Analyst & Full-Stack Developer with proven track record of delivering secure, scalable solutions that drive business growth. Specialized in transforming complex challenges into efficient, high-performance digital systems.

Expertise: React/Next.js ecosystems • Node.js microservices • Cloud security architecture • Threat intelligence • API optimization • CI/CD automation • Zero-trust implementation

50+
Projects
100% Success Rate
75%
Security
Incident Reduction
2
Projects
Officially Shipped

Professional Journey

🚀

Frontend Developer

2025 - Present

Steadfast Academy

Architected and deployed scalable frontend systems serving 10,000+ users, improving UI performance by 40% through optimized components and state management. Led migration from legacy frontend to modern React architecture.

💼

Co-Founder & Backend Developer

2025 - Present

Thee Entity Limited

Established tech startup from ground up, designing cloud-native solutions that reduced client infrastructure costs by 60%. Implemented CI/CD pipelines cutting deployment time from 2 hours to 15 minutes. Successfully shipped 2 major projects to production.

🔒

Information Security Specialist

2022 - 2024

ICT Authority of Kenya

Secured government digital infrastructure protecting 50,000+ user accounts, reducing security incidents by 75%. Developed 15+ secure web applications with zero critical vulnerabilities post-deployment. Implemented automated threat detection systems.

💻

Full-Stack Developer

2022 - 2024

Fiverr & Upwork

Delivered 50+ projects with 100% client satisfaction rate. Specialized in building secure, high-performance applications that consistently exceeded client expectations and project deadlines by 15%.

Certifications & Expertise

🏆

IBM Cybersecurity Analyst Professional

2024

IBM

Mastered advanced threat intelligence and security operations. Implemented SOC procedures that reduced incident response time by 65%. Expertise in NIST framework compliance and risk assessment methodologies.

🌐

Cisco Certified Network Associate

2023

Cisco

Designed and secured enterprise networks serving 500+ devices. Reduced network downtime by 80% through proactive monitoring and automated failover systems.

🛡️

Google Cybersecurity Professional

2023

Google

Developed comprehensive SIEM strategies processing 1M+ events daily. Created automated incident response playbooks that improved security team efficiency by 45%.

☁️

AWS Cloud Practitioner

2023

Amazon Web Services

Certified in cloud services and infrastructure. Implemented scalable solutions on AWS reducing operational costs by 30% through optimized resource allocation.

🔐

CompTIA Security+

2022

CompTIA

Validated baseline security skills and knowledge. Applied security principles across various environments and compliance requirements.

🔷

Microsoft Azure Fundamentals

2022

Microsoft

Demonstrated foundational knowledge of cloud services and how Microsoft Azure provides those services.

Education & Leadership

🎓

BSc Information Technology

2021 - Present

Umma University

Maintained excellent academic performance while leading Cybersecurity Club of 200+ members. Organized 15+ workshops on ethical hacking and secure coding practices. Research focus on AI-powered threat detection systems.

📚

KCSE - Science & Technology

2017 - 2020

Thika High School

Graduated with distinction in STEM subjects. Led school tech team to national competitions, winning 3 innovation awards. Developed early passion for problem-solving through technology.

✏️

KCPE

2013 - 2016

Lily Academy

Built strong foundation in mathematics and sciences. Showed early aptitude for logical thinking and problem-solving. Participated in science fairs and coding clubs.

Technical Expertise

Technologies I work with to create exceptional digital experiences

Core Stack

Next JS
Advanced
React JS
Expert
Node JS
Advanced
TypeScript
Advanced
Fastify
Intermediate
Express JS
Advanced

Languages

Java
Advanced
Python
Intermediate
JavaScript
Expert
Ruby
Beginner
C++
Intermediate
Kotlin
Intermediate
Flutter
Intermediate

Frontend

HTML5
Expert
CSS3
Expert
Bootstrap
Advanced
Tailwind
Advanced
Material UI
Intermediate
ShadCn UI
Intermediate

Databases

MsSQL
Intermediate
MySQL
Advanced
PostgreSQL
Intermediate
MongoDB
Advanced
Firebase
Advanced
Supabase
Intermediate

Platforms

Windows
Expert
MacOS
Advanced
iOS
Intermediate
Android
Intermediate
Linux
Expert

DevOps

AWS
Intermediate
Docker
Intermediate
Proxmox
Beginner

Design

Figma
Intermediate
Canva
Advanced

My Projects

A showcase of my work - some were collaborative efforts with other talented developers

Indicates collaborative project
UMMA Vision
WEBAPP
Team
In Progress

UMMA Vision

Comprehensive university portal with real-time collaboration features

ReactNode.jsMongoDB+1
First Lady Scholarship App
APP
Team
Completed

First Lady Scholarship App

Mobile scholarship management with automated eligibility checking

React NativeFirebaseNode.js
Library Link
APP
Team
Completed

Library Link

Mobile system for educational resources and past papers

JavaAndroid SDKFirebase
Visitor Management System
WEBAPP
Completed

Visitor Management System

Digital system for visitor logging and security tracking

ReactExpress.jsMySQL
Cybershield Security Suite
TOOL
Completed

Cybershield Security Suite

Cybersecurity tool with threat detection and vulnerability scanning

PythonJavaScriptSecurity APIs
Prayer Times & Qibla Finder
APP
Completed

Prayer Times & Qibla Finder

Islamic app with prayer times and mosque locator

React NativeGeolocation APIFirebase
Digital ID
APP
In Progress

Digital ID

Secure digital identity platform with advanced encryption

React NativeBlockchainBiometric Auth
Project Title Verifier
WEBAPP
Team
Completed

Project Title Verifier

System for verifying academic project originality

Vue.jsNode.jsMongoDB
Car Services System
APP
Team
Completed

Car Services System

Comprehensive car maintenance and service booking app

FlutterFirebasePayment Integration

It's impossible to list all my projects here - this page would be way too long! But these are some of my favorites.

I'm constantly experimenting with new technologies and building solutions to real-world problems.

Explore More on GitHub

Let's Connect

Open to new opportunities and collaborations

Remote - Worldwide

Available globally

Available: Yes

Open to opportunities

EMAIL

kareithibrian2@gmail.com

PHONE

+254 718 593 392

GITHUB

View Projects

LINKEDIN

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STEAM

Gaming Profile

Brian Kareithi © 2025 | Cybersecurity & Full-Stack Developer