Andre Nyanjahia

Kia ora! I'm Andre...

Solutions Architect, Data Engineer & Full-Stack Developer

I’m a highly autonomous Full‑Stack Systems Architect and Data Strategist specializing in enterprise backend systems and emerging technologies. I design and deploy scalable, high‑performance applications from decentralized Web3 protocols to AI-integrated cloud infrastructures owning the full technical lifecycle.

Technical Expertise

Domain Technologies & Competencies
Systems Architecture & DevOps Enterprise Backend Design | NestJS | Node.js | Microservices | RESTful & GraphQL APIs | Cloud Solutions (IBM) | JWT/OAuth 2.0 | CI/CD | Git/GitHub | Postman | Docker
Full-Stack & Mobile React.js | Next.js 13 (App Router) | React Native (Expo) | TypeScript | State Management (Zustand, Redux, Context API) | Tailwind CSS | EJS | App Store & Google Play Publishing
Backend & Databases Express.js | PostgreSQL (Relational) | MongoDB & Mongoose (NoSQL) | BigQuery | Multer & GridFS (Advanced File Systems) | Firebase | Supabase | Persistence Layer Optimization
Web3 & Emerging Tech Internet Computer Protocol (ICP) | Motoko (Smart Contracts) | Decentralized Apps (DApps) | Canister Development | On-chain Persistence | Internet Identity Integration
Data Science & AI Python (Scikit-learn, Pandas, NumPy) | R Programming | SQL | Predictive Modeling | Machine Learning Pipelines | Tableau | Power BI | Regression Modeling | Hypothesis Testing
Strategy & Management Agile (Scrum) | Waterfall | Grant Proposal Writing | Budgeting & Resource Allocation | Project Management Lifecycle (PACE)

Latest Projects

June 2026

Data Analytics Portfolio – Google Sites

SQL

Python

Tableau

Looker Studio

A comprehensive portfolio showcasing my data analytics projects, dashboards, and reporting work. Built using Google Sites, it highlights case studies, academic research, and professional projects in data visualization and reporting.

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June 2026

Personal Portfolio – StackDre Tech

React

Vite

UI/UX

Responsive Design

A modern, fully responsive personal portfolio showcasing my work as a Full-Stack Developer and Data Analyst. Built with React and Vite, the site highlights real-world projects, technical skills, and professional experience with a clean UI and smooth user interactions. Designed to demonstrate frontend architecture, performance optimization, and intuitive navigation.

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June 2026

Unifreight LDA Website

Wix

Responsive Design

UI/UX

A corporate website for Unifreight LDA, a Mozambique-based engineering solutions provider. Built with Wix, the site showcases services, projects, and client portfolio with a clean, responsive design and multilingual support. It highlights the company’s expertise in energy, oil & gas, and infrastructure sectors.

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May 2026

HydroNexus One

React 18

Refine.dev

Node.js

MongoDB

Leaflet.js

Arcjet

A production-grade One Health digital infrastructure framework for transboundary water management and AMR surveillance across the SADC region. Features real-time GIS mapping, low-bandwidth data logging, an automated Early Warning System, and a cryptographic audit trail secured by Better-Auth. Tested in live simulations to drop data entry workflows under 8 minutes.

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Jan 19, 2025

Brogram

ReactJS

FantaCSS

JavaScript

The Simple 30 Workouts Training Plan.

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April 8, 2026

Classroom Management Dashboard

React 19

Refine.dev

Node.js

Drizzle ORM

PostgreSQL

A high-performance educational ERP featuring automated enrollments, secure teacher/student authentication via Better Auth, and real-time analytics dashboards. Built with a serverless Neon database and Arcjet security.

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May 20, 2026

ShopHub: Subscription E-commerce

Next.js 16

Stripe API

Zustand

Tailwind v4

A modern storefront featuring server-side rendered product listings, secure Stripe subscription checkouts, and a high-performance global cart system powered by Zustand.

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April 14, 2026

SyntexHub Blog App

React.js

Express.js

MongoDB Atlas

Node.js

A full‑stack blogging platform with JWT authentication, secure API routing, and responsive UI. Built with React on the frontend and Express/MongoDB on the backend, deployed seamlessly to Netlify and Render.

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April 14, 2026

Secrets Project

Node.js

Express.js

MongoDB Atlas

Passport.js

EJS

A web application that allows users to share and view secrets anonymously after authentication. Features local login and Google OAuth, secure password hashing with bcrypt, session management, and dynamic EJS templating. Deployed with MongoDB Atlas and ready for cloud hosting.

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April 14, 2026

Book Tracker

Node.js

Express.js

MongoDB Atlas

Mongoose

EJS

A full‑stack web application for tracking your reading journey. Users can add, edit, and delete books, rate them, and attach notes. Book covers are fetched from the Open Library API. Built with Express.js and MongoDB Atlas (via Mongoose), styled with EJS templates, and secured with environment variables.

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