Freelance developer with a Bachelor's degree in Software Engineering (4 years) from Université Barack Obama de Sonfonia, Conakry. I design and ship complete systems for real clients in Guinea: web and mobile platforms, business back-offices, offline-first systems, security architectures, and payment / money-transfer integrations.
A strict multi-tenant school platform, fully configurable per institution — no hard-coded business lists — with a lifetime offline architecture running on an appliance box deployed at the client's site.
Seven Spring Boot services, and a delivery design where video runs at near-zero infrastructure cost.
A commerce and inventory ERP sold as multi-tenant SaaS: three deployments over one database, OHADA accounting, and an offline mode where the local replica is encrypted and the queue carries intents rather than states.
National and international transfers, on the same proven architecture as the other projects.
Public storefront plus a private back-office: 15 Django models, architecture diagram, full RBAC.
Three interfaces — public site, courier app, admin dashboard — wired around one shared REST API.
Personal budgeting built for Guinea: cash, bank and Mobile Money in one place, usable without internet and synced as soon as the network is back.
Java, Python, PHP, C, C++, JavaScript / TypeScript
Spring Boot, Django REST Framework, Laravel, .NET, Next.js
PostgreSQL (Neon), SQLite / WASM (offline-first)
AWS, Fly.io, Cloudflare
Flutter (Android/iOS), desktop applications with Java and Python libraries
REST API design, software architecture for complex systems, UML modelling, security architecture (encryption, WebAuthn biometric authentication, key management), networking fundamentals
WebAuthn / PRF, offline encryption key management, threat modeling
Google IT Support Professional Certificate Google Project Management Professional Certificate
Open to remote freelance work, architecture assignments and long-term collaborations.