Full-stack product engineer
Building marketplaces, mobile apps, commerce systems, and operational tools.
I am Nii Darku, a Ghana-based engineer who turns business problems into shipped software across mobile, web, backend, databases, integrations, and deployment.
Nii Darku
Accra, Ghana · Available
Systems I build
Product thinking, engineered end to end.
Mobile marketplaces
Expo, React Native, Flutter, auth, profiles, invitations, notifications, and release readiness.
SaaS operations
Multi-tenant dashboards, RBAC, reporting, admin tools, subscriptions, and business workflows.
Commerce systems
WooCommerce extensions, seller flows, product moderation, inventory sync, ledgers, and payouts.
Backend platforms
Node.js, TypeScript, Laravel, PostgreSQL, Redis, queues, webhooks, and service boundaries.
Field operations
Service requests, dispatch flows, maps, voice/SMS integrations, support, and admin oversight.
Product proof
Live links, shipped products, production docs, app-store workflows, and measurable business context.
Featured work
Shipped systems with business weight.
Wukuada
Product engineering, mobile, backend
A public creator marketplace for Ghanaian businesses and creators, shipped to the App Store.
BusyOS
Architecture, backend, web, mobile
A sales and inventory platform for shops, with POS, reporting, WooCommerce sync, receipts, and admin workflows.
Greysole
Marketplace architecture and implementation
A WooCommerce-centered marketplace layer with seller onboarding, APIs, admin review, ledgers, and seller tooling.
GHFIXER
Full-stack product build
A handyman services platform with customer requests, artisan dispatch, admin dashboards, maps, SMS, and voice workflows.
Open to roles
Looking for a full-stack engineer who can own product delivery?
I bring the range to shape interfaces, design APIs, model data, integrate services, deploy, debug, and keep the product moving.