JustinChinonso

Backend engineer / Fullstack developer

Backend focused fullstack engineer with 4 years of experience building scalable APIs and web applications. Strong in Python, Django, FastAPI and Node.js, with hands on experience deploying production systems and integrating AI features.

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4+Years experience

10+Projects shipped

3+Companies

02 / Selected works

Things I have built

View all works

01AI

Parvo

An open-source, local-first desktop AI assistant built with Tauri (Rust) and React that executes real-world tasks across the web and operating system. Featuring voice wake-word activation, multi-model LLM routing (Gemini, Groq, Ollama), and an intelligent browser automation engine. (In development)

TauriRustReactGeminiGroqOllama

02Fullstack

NACOS UI

A dedicated web platform engineered for computer science students at the University of Ibadan to eliminate fragmented group links and manual workflows. Centralizes membership dues verification, election voting, tech events, and a structured course material index linked directly to shared academic drives.

Next.jsTypeScriptTailwind CSS

03Fullstack

Tippa

A creator-first monetization tool designed to help social media creators effortlessly turn audience engagement into income. Creators can paste any post link to generate a dedicated tip page with customizable tipping tiers, real-time click tracking, frictionless fan checkout, and instant direct wallet payouts.

Next.jsFastAPIPythonTailwind CSS

04Fullstack

PatchedLab

A full-stack web platform built for a hands-on cybersecurity training academy. Features an interactive Three.js 3D padlock hero canvas, course tracks directory with waitlists, an alumni Hall of Fame for verified CVE writeups, Calendly diagnostic booking, and an admin CMS with Brevo email broadcasts.

Next.jsTypeScriptPrismaPostgreSQLThree.jsBrevo

03 / Experience

Where I have worked

Software Engineer

Sleekabyte Technologies • Full time • Remote

Aug 2026 - Present

2 mo

Delivered the Smart Shopper Experience: Built core features for QReceipts, an intelligent shopping platform that enables users to discover regional merchant products, compare effective prices, and manage smart, budget-capped shopping lists.
Streamlined Multi-Currency Expense Tracking: Developed the analytics and receipt-management engine, enabling users across different timezones to automatically track spending, categorize expenses, and view accurate financial insights in their local currencies.

Backend Engineer (Contract)

Regent Microfinance Bank Ltd • Contract • Remote

May 2026 - Jul 2026

2 mo

Engineered secure NestJS and Node.js backend infrastructure and RESTful APIs for digital banking operations.
Optimized database schemas, executed migrations, and integrated payment gateways with encryption and RBAC security.
Collaborated on CI/CD pipelines, documented systems, and maintained high availability and code quality.

Backend Developer

ULININ • Full time • Remote

Aug 2023 - Sep 2025

2 yr 1 mo

Built and maintained backend services for the Landmark University Student Portal and HR Management Portal using Express.js and Node.js, handling core functionalities such as user management, authentication, and system operations.

Fullstack Developer

Freelance • Freelance • Remote

Jan 2022 - Present

4 yr 9 mo

Designed and developed fullstack systems for clients using Django, FastAPI and Node.js.
Built and optimized RESTful APIs with a focus on security, scalability and clean integration with frontend apps.

04 / Stack

Technical toolkit

Backend

Python

Django

FastAPI

Node.js

Express

NestJS

Frontend

React

Next.js

Tailwind CSS

Databases

PostgreSQL

MySQL

MongoDB

SQLite

Vector DBs

Tools

Git

GitHub

Postman

Swagger

Cloud and DevOps

Docker

AWS

CI/CD

GitHub Actions

LangChain

Gemini API

Prompt Engineering

05 / Let's work together

Have a project in mind?

chinonsoali2005@gmail.com

Get in touch