Don C John — Principal SoftwareEngineer
I build scalable AI systems, LLM-powered applications, and high-performance backend architectures.
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... /About me ...
Hello, I'm Don an AI-focused Full Stack Engineer. 6+ Years of Architecting AI Solutions.
Front-end
Back-end
Data Science
DevOps
Some of my favorite technologies,
topics, or tools that I worked with
Certifications16
Google Professional Machine Learning Engineer
Google Cloud · 2025
Azure Data Scientist Associate
Microsoft · 2025
Google Cloud Professional Architect
Google Cloud · 2023
Microsoft Azure Administrator
Microsoft · 2021
IBM Machine Learning Professional
IBM · 2025
IBM Data Science Professional
IBM · 2021
IBM Applied Data Science
IBM · 2021
Microsoft Associate: Python
Microsoft · 2019
Projects
Enhanced E-commerce Platform
A comprehensive full-stack e-commerce solution featuring real-time inventory tracking, seamless product management, and smooth user experience across all devices.
- ReactJS
- NestJS
- Fastify
- PostgreSQL
- Redis
- Microservices
- Real-time
- E-commerce
AI-Driven Customer Support Chatbot
An advanced, AI-powered chatbot utilizing Natural Language Processing (NLP) to deliver intelligent, responsive customer support and enhance user engagement.
- Python
- TensorFlow
- FastAPI
- ReactJS
- Vertex AI
- NLP
- Chatbot
- ML/AI
AI-Powered Job Candidate Matchmaking System
AI platform matching candidates with jobs based on skills, experience, and preferences, enhancing transparency and hiring with machine learning.
- Generative AI
- Large Language Models (LLM)
- Vertex AI
- ReactJS
- PostgreSQL
- Python
- AI Matching
- Job Search
Intelligent Review Analyzer and Sentiment Classifier
An intelligent tool that analyzes product reviews using AI to categorize sentiments, identify toxic feedback, and provide actionable insights to help product owners improve offerings.
- Python
- TensorFlow
- FastAPI
- ReactJS
- Sentiment Analysis
- AI
- Review Management
Digital Learning & Development Platform
An interactive platform designed for freshers, offering technical training modules and performance evaluations to foster skill improvement and career growth.
- ReactJS
- NestJS
- Fastify
- PostgreSQL
- Redis
- Microservices
- BFF
- Training
- Skill Development
Comprehensive Machine Learning Toolkit Platform
A versatile platform equipped with various AI and machine learning tools such as web summarization, PDF query handling, mock API generation, and code validation for efficient software development.
- Python
- TensorFlow
- Keras
- NextJS
- PostgreSQL
- FastAPI
- Machine Learning
- LLM
- Langchain
Interactive Labs
Explore the browser-native experiments behind the portfolio
Each experience runs as its own focused demo, from webcam ML and tracking to chat, notes, music, and playful microsites. How each one works →
Work
- 8 monthsMouri TechPrincipal Software Engineer - AI
AI Engineer | Fullstack Developer
- 4 years 4 monthsQBurst TechnologiesSenior SDE Data Science
Data Scientist | Fullstack Developer
- 1 yearWebandCraftsSoftware Engineer
Fullstack Developer | JavaScript & Python
Articles
Multi-Agent AI and the Future of Work
How generative AI, LLMs, and multi-agent systems are reshaping organizations—from reactive chatbots to coordinated swarms of autonomous agents.
Read more: Multi-Agent AI and the Future of WorkModern E-commerce: Real-Time Inventory and Microservices
Building scalable commerce with React, NestJS, event-driven inventory, and service boundaries that survive traffic spikes and seasonal load.
Read more: Modern E-commerce: Real-Time Inventory and MicroservicesModern Customer Care with NLP and Vertex AI
Designing support bots that understand intent, escalate gracefully, and stay grounded in your knowledge base using Python, TensorFlow, and cloud AI.
Read more: Modern Customer Care with NLP and Vertex AIAI in Recruitment: Matching Candidates Without Bias Drift
Using LLMs and structured retrieval to improve hiring efficiency while keeping human review, audit trails, and fairness guardrails in the loop.
Read more: AI in Recruitment: Matching Candidates Without Bias DriftBuilding a Review Analyser with TensorFlow
From noisy product feedback to actionable insights: sentiment, toxicity, and theme extraction for product teams.
Read more: Building a Review Analyser with TensorFlowModern Digital Learning Platforms for Early-Career Engineers
Orientations and upskilling at scale with React, NestJS, assessments, and AI-assisted personalization.
Read more: Modern Digital Learning Platforms for Early-Career EngineersML Development Toolkits: Summaries, PDF Q&A, and Mock APIs
Shipping internal developer productivity tools with TensorFlow, Keras, and Next.js—without drowning in glue code.
Read more: ML Development Toolkits: Summaries, PDF Q&A, and Mock APIs