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j-deku/README.md

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Jeremiah Deku

Backend-Focused Full Stack Engineer | Node.js | TypeScript | Systems that scale

I specialize in Node.js/TypeScript backends that scale - building secure, production-grade systems designed for reliability, speed, and real-world impact.

Open to Work Remote & On-site


About Me

Backend-focused full stack engineer with hands-on experience building production systems from scratch. I design scalable APIs, implement secure authentication flows, and optimize performance through strategic caching and queue management. I focus on shipping reliable, maintainable code that serves real business goals.

What I bring:

  • Scalable Architecture: Multi-tenant API design with RBAC, queue management, and real-time capabilities
  • Security-First: OAuth/JWT auth flows, role-based access control, and payment integrations (Paystack)
  • Performance: Redis caching, async queue processing, rate limiting, and optimized database queries
  • DevOps Maturity: Docker containerization, Nginx reverse proxy, Linux server management

Connect with Me

GitHub Portfolio LinkedIn Stack Overflow Email


Core Tech Stack

Frontend:

JavaScript TypeScript React Redux Vite CSS3

Backend / DevOps:

NodeJS Express.js Socket.io Docker Nginx Linux

Data & Infra:

MySQL MongoDB Redis Firebase

Auth & Payments:

JWT OAuth Paystack


What I Build

  • Production APIs built for real-world traffic and operational reliability
  • Secure auth systems with OAuth and JWT for business-critical apps
  • High-performance Redis-backed services and async queue management
  • Admin platforms with RBAC for operations teams
  • Full-stack systems designed for scale, not demos

System Design Focus

  • Scalable API architecture with load balancing
  • Caching strategies (Redis, CDN, in-memory)
  • Queue-based async processing
  • Rate limiting and abuse prevention
  • Fault tolerance and graceful degradation

Featured Projects

TOLI-TOLI -- Live Frontend Private

A production-grade advance transport booking platform - think Uber, built for scheduled rides. Passengers book trips in advance, drivers receive automated FCM alerts, and a unique seat management system lets drivers reserve slots for their own agents/regular customers per route. Real-time updates via Socket.io, secure payments via Paystack, and full OAuth/JWT auth - serving passengers, drivers, and admins in one unified system.

This repository is private as TOLI-TOLI is being developed for commercial use. The codebase is available for review upon request - feel free to reach out.

Engineering highlights:

  • Designed a multi-role system (passengers, drivers, admins) with full RBAC from scratch
  • Built a real-time seat reservation engine with Redis to prevent double-booking
  • Implemented async notification queues with FCM for reliable driver alerting
  • Deployed with Docker and Nginx with environment-based configuration

Node.js Express MySQL Redis React Vite Socket.io FCM JWT OAuth Paystack Docker Nginx


A full-stack e-commerce platform where registered users can browse, search, and order products with a fast-loading UI. Features product categorization, search querying, persistent cart management, secure checkout, and Paystack payment integration. Separate admin and user dashboards for full operational control.

Engineering highlights:

  • Built product search with indexed queries and category-based filtering
  • Implemented JWT session management with OAuth social login
  • Optimized frontend bundle with Vite for fast initial page loads
  • Designed dual-dashboard architecture separating admin and user concerns

Node.js Express MongoDB React Vite Paystack JWT OAuth


An early-stage transport booking MVP sharing TOLI-TOLI's core booking flow - passengers book rides in advance, drivers get notified, seat availability is managed per route, and payments are processed via Paystack. Built as a rapid iteration MVP to validate core booking functionality.

Node.js Express MongoDB React Paystack JWT OAuth


DocumindAi In Development

An AI-powered workplace assistant that reduces forgetfulness in digital workflows. Monitors user activity, predicts likely forgetful steps - like closing unsaved documents - and delivers timely reminders and smart suggestions to help office teams stay on top of their digital work before mistakes happen.

Python AI/ML Behavioral Analytics


System Architecture - DocumindAi

Diagrams


GitHub Activity

Top Langs


Let's Build Something Great

Available for full-stack engineering roles, backend-heavy positions, and system design challenges. Whether you're scaling a product, building a new platform, or optimizing existing systems - I'm ready to contribute.

Get in touch | LinkedIn | GitHub

Pinned Loading

  1. Transbook Transbook Public

    TransBook is a modern and scalable transport booking web application designed to simplify how users book, manage, and track their travel journeys. The platform supports customer reservations, ride …

    JavaScript 2

  2. BlooFi BlooFi Public

    A modern, responsive e-commerce frontend built for a balloon and floral decor business. The application showcases a complete shopping experience — from product discovery to cart management — with a…

    JavaScript 2

  3. jerryDek jerryDek Public

    As a full-stack web application developer, this portfolio presents a range of projects demonstrating my proficiency across both front-end and back-end technologies, including React, NodeJs, Express…

    1