Bonaventure W.

I design, build, deploy, and maintain complete software systems—web applications, native iOS and Android apps, e-commerce platforms, APIs, AI agents, and automated business workflows. With 15+ years of experience, I help businesses develop new products, improve existing applications, connect platforms, and manage their hosting infrastructure. You can engage me for a focused technical task or end-to-end delivery, from discovery and architecture through development, deployment, and ongoing support. WHAT I CAN HELP YOU WITH • Software architecture and consulting System design, technology selection, integration planning, technical roadmaps, and phased delivery plans for new and existing products. • Web and custom application development Customer portals, admin dashboards, booking systems, business applications, and custom platforms using frameworks including Laravel, Symfony, Django, and FastAPI. • iOS and Android development Native iOS and native Android applications, cross-platform development with React Native and Flutter, and Python mobile applications using Kivy. Backend integration, app store deployment, and ongoing maintenance. • APIs and system integrations REST and WebSocket APIs, third-party integrations, data synchronisation, background processing, and real-time services that connect your applications and business systems. • AI agents and workflow automation AI agents and connected workflows using LangGraph, LangChain, the OpenAI Agents SDK, and n8n. Intelligent search, research workflows, transcription, summarisation, tool integrations, and automation of repetitive business processes. • CMS and learning platforms Drupal, WordPress, Joomla, Moodle, and custom content and learning management systems—from new builds and custom functionality to maintenance and major version upgrades. • E-commerce Shopify, Magento, WooCommerce, and Drupal Commerce development, customisation, and integrations with payment providers, product catalogues, and other business systems. • Migration and modernisation Legacy application upgrades, platform migrations, database and content migrations, and restructuring systems for long-term maintainability. • Content and data engineering Bulk content imports, spreadsheet-to-CMS pipelines, structured data processing, content audits, and content restructuring. • DevOps and hosting VPS and cloud configuration, website and application hosting, Docker, CI/CD pipelines, deployment automation, scripting, caching, and performance optimisation. • Maintenance and support Troubleshooting, security patches, application upgrades, proactive monitoring, feature development, and ongoing technical care. TECHNICAL BACKGROUND My experience spans PHP, Laravel, Symfony, Python, Django, FastAPI, Kivy, Go, Node.js, JavaScript, TypeScript, React, Next.js, Vue, React Native, Flutter, Kotlin, Java, PostgreSQL, MySQL, and Redis. For AI and automation, I work with LangGraph, LangChain, the OpenAI Agents SDK, n8n, LLM integrations, and MCP. HOW I WORK I consider how the whole system fits together: your users, business processes, applications, data, integrations, and infrastructure. I start by understanding the problem and agreeing on a clear scope. From there, I plan the technical approach, build in manageable stages, test the relevant workflows, and prepare the application for deployment and maintenance. Message me on Upwork with what you want to build, improve, or connect. We can define a practical first milestone.