Gayan C.

AI Application Developer | Full-Stack Developer | Bubble io Expert | API Integration Specialist Hi, I'm Gayan Chamara, a software developer with 12+ years of experience in web and software development and 8+ years of professional experience building applications with Bubble io. I have a BSc in Web Engineering and experience across 100+ international projects. I help startups, entrepreneurs, and businesses transform ideas into reliable, scalable web applications, AI-powered products, SaaS platforms, and custom business solutions. I combine visual programming, traditional coding, AI technologies, APIs, databases, and cloud infrastructure to deliver practical solutions. 🤖 AI & LLM DEVELOPMENT I integrate modern AI models into applications and business workflows: • OpenAI API and GPT-powered applications • Anthropic Claude API • Google Gemini API • DeepSeek API and Groq API • AI chatbots, assistants, and AI agents • RAG, document processing, and data extraction • Prompt engineering and structured JSON outputs • Voice AI, transcription, and conversational interfaces • AI automation and custom AI integrations ⚙️ BUBBLE IO & VISUAL PROGRAMMING Bubble io is one of my core specializations. I develop complete web applications using visual programming, supported by sound database design and application architecture. • Custom Bubble io applications and SaaS platforms • Complex workflows and backend workflows • Database architecture, privacy rules, and authentication • REST API, webhooks, and third-party integrations • Custom plugins, JavaScript, and CSS • Responsive UI development and performance optimization • Payment gateways, subscriptions, and user management • Bubble frontends connected to external backends and AI services 💻 PROGRAMMING & BACKEND DEVELOPMENT I also build custom backend services, APIs, automation tools, and application logic using traditional programming. • Python — backend development, automation, AI, and data processing • TypeScript and JavaScript — web applications and APIs • Rust — systems and performance-focused development • Java — backend and application development • HTML5, CSS3, and SQL • Database design, querying, and optimization 🔗 API INTEGRATION & AUTOMATION • REST, GraphQL, and SOAP API integrations • Webhooks and event-driven workflows • Custom API development and backend services • OAuth, authentication, and secure integrations • Stripe and payment gateway integrations • Twilio, SendGrid, and WhatsApp Business API • Database migration and third-party system integration • AI API integration and business process automation ☁️ CLOUD HOSTING & DEPLOYMENT I help deploy and connect applications using suitable hosting and cloud infrastructure: • Railway — backend services and application deployment • PythonAnywhere — Python application hosting • Microsoft Azure and Google Cloud • AWS and VPS/Linux hosting • Namecheap domains, DNS, and hosting configuration • Custom domains, subdomains, SSL, and deployment troubleshooting • Environment configuration and database connectivity 🌐 WEB & E-COMMERCE DEVELOPMENT • WordPress and WooCommerce development • Shopify and e-commerce integrations • Laravel applications and custom business systems • Admin dashboards, customer portals, and booking platforms • Responsive websites and application maintenance 📈 TECHNICAL SEO & PERFORMANCE I can implement technical SEO improvements to help websites become faster, more accessible, and easier for search engines to crawl and understand. • Technical SEO checks and implementation • Core Web Vitals and website speed optimization • Mobile responsiveness and usability • Metadata, headings, and search-friendly URLs • XML sitemaps and robots.txt • Canonical URLs, redirects, and indexability checks • Structured data and schema markup • Google Search Console and technical troubleshooting 🤝 WHY WORK WITH ME? • 12+ years of web and software development experience • 6+ years of professional Bubble io experience • Experience across 100+ international projects • Strong focus on API integrations, databases, and AI applications • Practical solutions combining no-code and custom coding • Maintainable, secure, and performance-conscious development • Clear communication and regular progress updates • Commitment to quality and agreed deadlines Whether you need an AI-powered application, a Bubble io SaaS platform, a custom backend, complex API integrations, or technical website improvements, I can help you choose the right approach and bring your project to life. Let's discuss your requirements and build a reliable solution for your business.