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Zerocode-sean/README.md

JOHN Mutua

I am a software engineering practitioner with a strong focus on backend systems, DevOps, and structured system design.
My work emphasizes reliability, automation, and building systems that are production-oriented rather than experimental.

I am actively developing skills in cloud infrastructure, CI/CD, agentic AI workflows, and scalable backend architectures.

Current Focus Areas

  • Backend system design and API development
  • DevOps fundamentals and cloud-native workflows
  • Specification-driven development with AI agents
  • Infrastructure monitoring and automation
  • Security-aware application development

Technical Stack

Programming & Scripting

  • JavaScript (Node.js)
  • PHP
  • Rust (backend-focused learning path)
  • Java
  • Python

Backend & Data

  • RESTful API design
  • MySQL, PostgreSQL
  • Firebase (authentication, FCM)
  • Server-side validation and security controls

DevOps & Infrastructure

  • Git & GitHub (workflow-driven development)
  • GitHub Actions (CI/CD pipelines)
  • Docker & containerized deployments
  • Linux server administration
  • AWS fundamentals (Cloud Practitioner path)
  • Infrastructure monitoring concepts (FTTH systems)
  • Monotering with prometheus and Grafana

Frontend (Supportive)

  • HTML5, CSS3
  • JavaScript
  • Bootstrap

Notable Projects & Work

  • Online Book Reading & Monetization Platform
    Full-stack system with uploads, downloads, ratings, comments, and security controls.

  • FTTH Network Monitoring Tool
    Backend-focused monitoring platform for network visibility and operational insights.

  • Certificate Verification System
    Public verification page using QR codes mapped to certificate identifiers.

  • Push Notification System
    Web-based Firebase Cloud Messaging (FCM) implementation using PHP and JavaScript.

  • Spec-Driven Development Experiments
    Applying GitHub Spec Kit and agentic workflows to design-first development.

(Pinned repositories below represent active and representative work.)

Engineering Approach

  • Specification before implementation
  • Security and failure-awareness in system design
  • Automation over manual processes
  • Documentation as part of delivery, not an afterthought
  • Continuous improvement through tooling and feedback

Professional Interests

  • Backend engineering
  • DevOps and platform engineering
  • Cloud infrastructure
  • Agentic AI applied to real development workflows
  • Scalable and maintainable system design

Contact & Collaboration

Pinned Loading

  1. jenkins-docker-install jenkins-docker-install Public

    installing jenkins on docker easily with built script all from one place

    PowerShell 1

  2. nba-prediction-system nba-prediction-system Public

    Professional NBA Sports Prediction System - Streamlit App with ML Models

    Python 1

  3. Devops_blog Devops_blog Public

    Platform for downloading DevOps learning materials

    JavaScript 1

  4. drms drms Public

    A digital platform where urban residents can request for waste collection digitally. This a got automated features that eneble user to manage waste collection efficiently

    PHP

  5. multi-platform-downloader multi-platform-downloader Public

    Video downloader app with CI/CD practice

    Python