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niyontwali/README.md

👋 Hi, I'm John Niyontwali

Senior Full-Stack Developer & Technical Mentor

Website LinkedIn YouTube Email

My Journey

Senior Full-Stack Developer with 8+ years of experience designing and delivering scalable web, mobile, and enterprise applications across healthcare, fintech, e-commerce, government, education, property management, and corporate sectors. My journey began with JavaScript, evolved through the mobile revolution with React Native and Flutter, and expanded into Python's versatile ecosystem.

Currently serving as a Part-time Software Engineer Career Mentor at Springboard USA, I've successfully mentored over 100 developers with a 95% mentee satisfaction rate and 85% job placement success. Beyond building applications, I've found my passion in transforming coding concepts into accessible learning adventures through TechQuest e-Academy.

Technical Toolkit

Languages

JavaScript TypeScript Python C# PHP Dart HTML5 CSS3 SQL

Frontend & Mobile

React Next.js Angular React Native Flutter Redux Tailwind Material UI

Backend & APIs

Node.js Express.js NestJS FastAPI Flask Django .NET Core GraphQL Socket.IO

Databases

PostgreSQL MongoDB MySQL Redis Elasticsearch Firebase

Cloud & DevOps

AWS Google Cloud Docker Kubernetes Jenkins GitHub Actions

Testing & Quality

Jest Cypress Playwright

The Mentor's Approach

At TechQuest e-Academy and in my role at Springboard USA, I transform coding concepts into accessible learning adventures. My proven mentoring methodology has achieved remarkable results:

  • 95% mentee satisfaction rate across 100+ developers mentored
  • 85% job placement rate for program graduates
  • 80% completion rate in refugee coding programs
  • Teaching fundamental concepts topic-by-topic for both frontend and backend
  • Building real-world projects that solve genuine problems
  • Creating clear pathways from beginner to job-ready developer

🎬 Subscribe to our YouTube channel and join our growing community of developers transforming coding challenges into career opportunities.

Current Focus Areas

My current explorations and continuous learning include:

  • AI & Machine Learning Integration - Exploring LangChain and OpenAI APIs
  • Microservices Architecture - Event-driven systems and cloud-native solutions
  • Advanced Testing Strategies - E2E testing with Playwright and comprehensive quality assurance
  • Performance Optimization - Database optimization and system scalability
  • Serverless & Cloud Architecture - AWS Lambda, API Gateway, and cloud-native development

Key Achievements

  • Healthcare Impact: Developed HIPAA-compliant applications serving 4,000+ users with 99% uptime
  • Team Leadership: Led engineering teams of 5-8 developers, improving delivery velocity by 40%
  • Performance Excellence: Achieved 90%+ code coverage and reduced production bugs by 35%
  • Infrastructure Optimization: Reduced AWS costs by 25% through microservices architecture
  • Mentoring Success: 100+ developers mentored with industry-leading placement rates

Code Contributions

The DSA Challenges Repository serves as my contribution to the community—a collection of algorithm solutions with explanations designed to illuminate the reasoning behind each approach.

Connect With Me

Whether you're seeking development solutions, learning resources, or career mentorship, let's start a conversation:

LinkedIn YouTube Email Portfolio


"Transforming ideas into reality through code, and developers into industry professionals through mentorship."

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  1. task-api-python_fastapi task-api-python_fastapi Public

    Python

  2. google-clone-backend google-clone-backend Public

    JavaScript 1

  3. javascript-cheat-sheet javascript-cheat-sheet Public

    JavaScript Cheat Sheet: From Beginner to Advanced Concepts

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  4. google-clone-frontend google-clone-frontend Public

    TypeScript 1

  5. js-daily-dsa-challenges js-daily-dsa-challenges Public

    JavaScript 1

  6. wordle_game-clone wordle_game-clone Public

    TypeScript 1