Sadiq Abdullahi
Full-Stack Developer  ·  Python · React · Django · Node.js
Building secure, production-grade web systems — from scalable APIs to polished frontends. Passionate about clean code and teaching developers.
Open to opportunities
Professional Summary

Full-Stack Developer and Computer Science undergraduate at Federal University Gusau with strong hands-on experience designing, building, and deploying production-grade web applications and backend systems. Skilled across the full stack — from responsive React and Next.js interfaces to Django/Node.js APIs and relational database architecture. Experienced in end-to-end delivery: architecture, UI, backend engineering, payment integration (Paystack), and deployment. Growing focus on AI data workflows and ML-ready data pipelines.

Experience
Full-Stack Developer 2022 – Present
Freelance · Open Source · Academic Projects · Running Jack ICT Academy
  • Designed and developed full-stack web applications using React.js, Next.js, Node.js, and PHP for clients and self-directed projects
  • Built RESTful APIs with Django and Flask; implemented JWT authentication and secure session management with CSRF protection
  • Architected and optimised relational databases using PostgreSQL and MySQL; implemented query optimisation and integrity constraints
  • Integrated payment systems (Paystack) across multiple platforms including school portals, hotel management, and e-commerce stores
  • Deployed applications on Linux (Nginx/cPanel) environments; configured SMTP email, OAuth (Google), and SSL/HTTPS security
  • Contributed to AI dataset preparation pipelines: data collection, annotation, cleaning, and structured preprocessing for ML workflows
  • Built responsive, mobile-first UI/UX interfaces applying component-driven architecture and accessibility principles
ICT Instructor & Mentor 2023 – Present
Running Jack ICT Academy · Nigeria
  • Designed and delivered structured programming courses for beginners and intermediate learners in web development
  • Maintained a full student management portal (registration, authentication, course management, results, email notifications)
  • Built and maintained the academy's platform including security hardening, OAuth integration, and maintenance systems
Technical Projects
School Management System (EduPortal)
Next.js · Node.js · PostgreSQL · Paystack
Production-grade multi-school SaaS with student portals, result computation, fee payments via Paystack, and a role-based admin dashboard.
Hotel Management System (StayEase)
PHP · MySQL · JavaScript · Bootstrap
Full hotel management covering room booking, guest records, and Paystack payment integration with admin control panel.
E-Commerce Platform
PHP · MVC · MySQL · Paystack · Bootstrap 5
Advanced product discovery with FULLTEXT search engine, faceted filtering, SEO scoring, sitemap generation, and Schema.org structured data. 31-file MVC architecture.
Factory Production System
PHP · MySQL · Multi-role · Shift Mgmt
Production management with multi-role dashboards, shift-aware record detection, alarm workers, and per-shift stat breakdowns.
AI Dataset Preparation Workflow
Python · Data Pipeline · ML Prep
Collected, cleaned, and labelled structured datasets for ML training. Built reusable preprocessing pipelines to support AI model workflows.
Chicken Disease Detection System
Python · TensorFlow/Keras · Flask · CNN
AI-powered poultry disease detection using Convolutional Neural Networks. Classifies common chicken diseases from images with a Flask web interface for real-time diagnosis.
Attendance Management System
PHP · MySQL · JavaScript · Bootstrap
Digital attendance tracking for organisations and schools with real-time marking, absence reporting, exportable records, and role-based admin and staff dashboards.
Clinic Management System
PHP · MySQL · Bootstrap · REST API
End-to-end clinic platform covering patient registration, appointment scheduling, medical records, prescription management, and billing with role-based access for doctors and staff.
Key Highlights
30+ projects delivered across school portals, hotel systems, clinic management, attendance systems, AI detection, POS, e-commerce, and booking platforms
Security-first development — implemented OAuth 2.0, CSRF protection, rate limiting, XSS filtering, and custom IDS/firewall systems
Full deployment experience — Namecheap/cPanel shared hosting, Linux/Nginx, SMTP configuration, SSL, environment security, and containerisation with Docker
Infrastructure & scaling — hands-on experience with Docker containerisation, server provisioning, horizontal scaling strategies, and cloud deployment on Railway and Render
Cross-platform development — built Electron (desktop) and React Native (mobile) apps, command-line tools, and browser extensions