Need a mobile app, a web app, or real AI built into your product, all from one reliable engineer who owns it start to finish? That's what I do, and I do it Top Rated, with 100% Job Success and 5 stars on every project I've delivered. Anyone can get an AI demo running in a weekend now. Turning that into a real product you can charge for and trust with real users is a different job, and that's the one I do. Most projects need more than one piece. An app that needs a web dashboard. A website that needs a mobile version. An AI feature that has to work in production, not just in a demo. I build all of it, so nothing breaks in the handoff between freelancers, and you deal with one person who owns the outcome. You're in the right place if: - You want one developer to own your web app, mobile app, and backend together - You want real AI inside your product, not a chatbot bolted on the side - Your last developer went quiet mid-build and you need someone reliable - You need a working MVP in weeks, not months - You want clean, documented code you won't pay to rebuild next year What I build › Websites & Web Apps Modern websites and web apps with Next.js and React: SaaS platforms, admin dashboards, client portals, and landing pages, with the backend, database, and Stripe payments built in. › Mobile Apps iOS and Android apps with React Native and Flutter, from idea to App Store and Play Store. Social, fitness, marketplace, real-time, and MVP builds shipped to live users. › AI Features Real AI built into your app: chat assistants, AI that knows your own data (RAG), text-to-speech, and smart workflows powered by Claude and OpenAI. Integrated to hold up with real users, not just in a demo. Why clients keep working with me - Top Rated, 100% Job Success, and 5 stars on every project I've closed - One engineer for web, mobile, backend, AI, and launch, so nothing gets lost between teams - Shipped real products to the App Store and to live web users, and led dev and design teams as Technical Lead - BSc Computer Science, plus 8+ years building and shipping software - 0 to 4 hour response time with clear, honest updates Tools: React Native, Flutter, Expo, Next.js, React, TypeScript, Node.js, Python, Django, Supabase, Firebase, PostgreSQL, Claude, OpenAI, RAG, LangChain, Stripe, AWS, Docker

Mobile App Developer since 2014 working on mobile apps across both Android and iOS, working in both small startups as well as large enterprises. I have worked primarily in the health, medical devices, fitness and travel sectors.

𝑻𝒐𝒑 3% 𝒐𝒏 𝑼𝒑𝒘𝒐𝒓𝒌 ⸻ I build AI-driven software products from end to end — helping founders and lean teams turn complex ideas into functional, scalable systems across mobile, web, and cloud. ⸻ 🛠️ 𝐖𝐡𝐚𝐭 𝐈 𝐔𝐬𝐞 𝗔𝗜 & 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲 𝗠𝗼𝗱𝗲𝗹𝘀 • OpenAI (GPT, Assistants API, function calling) • Mistral, Anthropic (Claude), embedding + summarization pipelines 𝗩𝗶𝘀𝗶𝗼𝗻 & 𝗢𝗖𝗥 • Google Vision AI, Microsoft Vision API, Tesseract, YOLO, TensorFlow Lite 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 • Flutter, React Native, Next.js 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 / 𝗖𝗹𝗼𝘂𝗱 • Supabase, Firebase, PostgreSQL • Secure auth, RBAC, email/calendar APIs 𝗠𝗼𝗯𝗶𝗹𝗲 𝗡𝗮𝘁𝗶𝘃𝗲 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 • Swift & Kotlin for camera, calendar sync, file access, health data, etc. ⸻ Beyond full-stack execution, I bring deep expertise in designing custom AI agents, fine-tuning language models, and prompt engineering workflows tailored to real business use cases. Whether you’re building a vision-based tool, a reasoning system, or an LLM-backed assistant, I focus on delivering production-ready software that works in the real world. ⸻ 🧭 𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤 𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 & 𝗣𝗹𝗮𝗻𝗻𝗶𝗻𝗴 • Focused on understanding the core problem before writing code • Strategic technical planning with scalable architecture in mind • Clear milestones and realistic timelines 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗘𝘅𝗲𝗰𝘂𝘁𝗶𝗼𝗻 • Well-structured, maintainable codebases across mobile, web, and backend • Optimized for real-world performance, not just demos • Continuous testing and quality assurance baked into the process 𝗦𝗺𝗼𝗼𝘁𝗵 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻 • Regular, async-friendly updates with fast response times • Plug-and-play with your tools and team setup • Clean documentation and transparent decisions at every step 𝗟𝗮𝘂𝗻𝗰𝗵 & 𝗕𝗲𝘆𝗼𝗻𝗱 • Confident app store submissions and production deployment • Performance monitoring and issue tracking in place • Available for iteration, scaling, or long-term support ⸻ If you’re building something smart and need someone who understands both the product and the tech — 𝙡𝙚𝙩’𝙨 𝙩𝙖𝙡𝙠. ⸻

FULL-STACK ENGINEER | WEB, MOBILE, BACKEND, AI INTEGRATION I build software end to end, and I'm not tied to one language or platform. A web platform, an iOS app, an Android app, a backend API, an AI-powered feature, or all of them working as a single system. You describe the product; I select the right technology and deliver it. 7+ years of full ownership, from architecture through deployment. I don't start from a stack; I start from your requirements. The product decides the technology, so you never pay for workarounds later. WHAT I BUILD Web: customer-facing platforms, SaaS products, e-commerce, dashboards, admin panels, internal tools Mobile: native iOS, native Android, or one cross-platform codebase covering both Backend & APIs: REST and GraphQL services, real-time systems, authentication, third-party integrations Data: relational and NoSQL databases, schema design, migrations, query optimization, reporting Infrastructure: server configuration, cloud or dedicated deployment, CI/CD, monitoring, scaling Design to code: Figma, Adobe XD, and wireframes turned into production interfaces AI INTEGRATION I add AI to existing products and build new products around it: Custom chatbots and assistants trained on your documents, catalog, or knowledge base (RAG) LLM integration into existing applications: OpenAI, Anthropic, and open-source models AI agents and workflow automation that replace repetitive manual operations Document processing: extraction, classification, and summarization at scale Speech-to-text, translation, and content generation pipelines Search and recommendations that understand intent, not just keywords Every integration is built for production: cost control, rate limiting, error handling, and predictable behavior, not a demo that breaks under real usage. PAYMENTS, DELIVERY & COMPLEX INTEGRATIONS Payments: Stripe, PayPal, and regional gateways; subscriptions and recurring billing, marketplace split payments, multi-currency, refunds, webhooks, reconciliation Delivery & logistics: carrier API integration, live rate calculation, label generation, real-time order tracking, delivery zones, driver and dispatch apps Anything with an API: CRM, ERP, accounting, SMS and email providers, maps, analytics, legacy systems These are the parts of a project where things quietly go wrong months after launch. I build them to be traceable, testable, and safe to change. LANGUAGES & STACKS PHP (Laravel), JavaScript and TypeScript (React, Vue, Node.js), Python, Java, Kotlin, Swift, C#, Go, and Dart/Flutter. I pick up an unfamiliar stack quickly when a project calls for it. If your product runs on something not listed here, ask; the answer is usually yes. HOW I WORK Scope before code: we define what "done" means in writing before development starts Regular demos: you see working software throughout the project, not a status report at the end Clean handover: documented code, environment setup, and a walkthrough; you are never locked in Direct communication: clear updates, reliable timezone overlap, no silent stretches Whether you need a single feature, a full product built from zero, a rescue of an existing codebase, or long-term development alongside your team, the value is the same: one engineer covering the entire product, no handoffs between separate teams, and no gaps where handoffs usually fail. Tell me what you're building and where it stands today. I'll reply with an honest assessment of scope, timeline, and the approach I'd recommend, before you commit to anything.

Transform your business operations with intelligent AI Agents and automation solutions. With 14+ years of experience building enterprise-grade software solutions, I specialize in creating custom AI Agents and automations that drive real results for businesses. 🎯 What I Do Best: 1) Design and implement AI Agents 2) Create automated workflows that integrate with your existing systems 3) Develop custom AI solutions that reduce costs and increase efficiency 🚀 Featured Projects & Results: ✅ Real Estate Lead Generation System 1. Built custom AI Voice Agent handling 1000+ calls daily 2. Increased qualified lead generation by 40% 3. Reduced response time by 65% 4. Automated appointment scheduling with 95% accuracy ✅ Healthcare Patient Management 1. Developed intelligent scheduling system with AI Agents 2. Reduced no-show rates by 35% 3. Automated 80% of routine appointment confirmations 4. Integrated with existing EMR systems ✅ E-commerce Customer Service Created multilingual AI Voice Agent handling customer inquiries Automated 70% of common customer service requests Increased customer satisfaction scores by 45% Seamless integration with existing CRM 🛠️ Technical Expertise: AI Stack: Openai models, Claude, Gemini, Rag pipleine AI Voice Platforms: VAPI ai, Retellai, Blandai, Airai Voice Technologies: ElevenLabs, Whisper, Deepgram Automation Tools: n8n, Make, Zapier CRM Integration: Salesforce, HubSpot Custom API Development & Integration 💡 Specialized Services: ✔️ AI Agent Development 1. Custom agent design and implementation 2. Natural language processing optimization 3. Voice personality customization 4. Multi-language support ✔️ Automation & Integration 1. End-to-end workflow automation 2. CRM and business tool integration 3. Custom API development 4. Real-time analytics and reporting ✔️ Business Process Optimization 1. Call center automation 2. Lead qualification systems 3. Appointment scheduling 4. Customer service automation 🌟 Why Work With Me: 1. Deep expertise in AI technologies and automation 2. Focus on measurable business results 3. Clear communication and project management 4. Fast implementation and deployment 5. Ongoing support and optimization 📈 Recent Success Stories: "JC transformed our outbound calling process. His AI Agent solution increased our contact rate by 45% and saved us $12,000 monthly in operational costs." Mark R Real Estate Agency "The AI Agent JC built for our medical practice is incredible. It handles scheduling, confirmations, and basic patient inquiries perfectly. Our staff can now focus on more important tasks." - Dr. Sarah L Medical Director 🔍 My Approach: 1. Understand your specific business needs 2. Design custom AI solution 3. Develop and test extensively 4. Deploy and monitor performance 5. Optimize based on real-world data 6. Provide ongoing support Ready to revolutionize your business with AI Agents? Let's discuss your needs and create a solution that delivers real results.

Le-Roy is a seasoned technology leader with a track record of delivering software solutions across security, construction, mixed reality, and video games. He’s passionate about crafting software that feels exceptional; an approach recognized through Apple feature placements and exclusive invitations from Google and Unity.

As a seasoned Fullstack Engineer with 20+ years of experience, I build high-performance, scalable web and mobile applications that deliver exceptional user experiences. I specialize in modern frameworks and architectures, combining clean, maintainable code with a strong focus on performance and usability. Beyond traditional development, I integrate AI and automation deeply into the products I build, helping founders and teams ship smarter platforms, not just websites. That means real AI integration, custom backends, smart workflows, and interfaces your users will actually love. I bring a product-driven mindset to Agile teams, collaborating closely with designers and stakeholders to turn ideas into reliable, production-ready solutions. My expertise includes API design and integration, component-driven development, and enforcing best practices with tools like TypeScript, ESLint, and modern CI/CD workflows. ✔ Core Expertise - Frontend: React, Next.js, Vue, Nuxt.js, TypeScript, Tailwind CSS, Bootstrap, shadcn/ui - Backend: Node.js, Express, NestJS, REST APIs, GraphQL, Django, Python, PHP, Laravel, CodeIgniter - Mobile: React Native, Flutter, Ionic, PWA - AI & LLM Integration: OpenAI, Claude, LangChain, RAG, AI agents, vector databases, chatbots, content automation - Automation: n8n, Zapier, Make, custom workflow automation, API orchestration - Database: PostgreSQL, MongoDB, Firebase, Supabase, MySQL - Cloud & DevOps: AWS, Vercel, Docker, CI/CD pipelines - Code Quality: ESLint, Prettier, scalable architecture, reusable components ✔ What I Deliver - Scalable SaaS platforms and dashboards - AI-powered features (chat, recommendations, RAG, agents, automation workflows...) - Web and mobile apps built for performance and growth - High-converting landing pages and SPAs - Custom internal tools and client-facing applications - Clean, maintainable, well-documented code - Fast turnaround with clear communication I stay at the forefront of evolving technologies, continuously refining my skills to build innovative, future-ready digital products. From dynamic single-page applications to complex, data-driven platforms enhanced with AI, I focus on delivering solutions that are both technically robust and business-impactful. Whether you have a clear spec or a rough idea, I can help you scope it, build it, and ship it. Send a message with what you are working on and I will reply within a few hours.

I built Flowasis solo from scratch, a real-time options flow and market intelligence app shipped to iOS, Android, and web. React Native frontend, 60+ AWS Lambda functions, DynamoDB, Redis, real-time data pipelines, and an LLM assistant with tool-calling. It's in production. I built all of it. I also build OpenClaw-powered AI agents, automation workflows that connect Claude AI to external tools, APIs, and messaging systems. If you need someone to wire up AI assistants, LLM tool-calling, or agent automation into your product, I've already done it. I own projects end-to-end. I ship fast. I don't need hand-holding. If you want a developer who treats your project like their own business, that's exactly how I work. Stack: React Native, TypeScript, Node.js, AWS (Lambda, DynamoDB, API Gateway, ECS, Redis), LLM/AI integration, OpenClaw agent automation

Former Senior Developer at Angel Studios (millions of users). I build full-stack web and mobile apps with Next.js, React Native (Expo), Supabase, Node.js, and Stripe. I specialize in solo projects — owning everything from frontend to deployment. ⚡ Next.js Development: I build fast, SEO-optimized web applications with Next.js, TypeScript, and Tailwind — leveraging SSR/SSG for performance and search visibility. 📱 React Native & Expo: I create cross-platform mobile apps from a single codebase that deploy to iOS App Store, Google Play, and web. 🗄️ Supabase & Backend: Full backend development with Supabase (auth, storage, realtime, edge functions), Node.js, Express, GraphQL, and tRPC. 💳 Third-Party Integrations: Seamless integration with Stripe, Clerk, Twilio, SendGrid, and other APIs to power your app's core features. 🚀 Solo Full-Stack Ownership: I manage entire projects end-to-end — frontend, backend, integrations, CI/CD, and deployment to Vercel, Digital Ocean, or your preferred platform. If you're looking for a developer who can own your project from concept to launch, let's talk. Skills: ✔️ Next.js & React Development ✔️ React Native & Expo (iOS + Android) ✔️ Supabase, PostgreSQL, Prisma ORM ✔️ Node.js, Express, GraphQL, tRPC ✔️ TypeScript & Tailwind CSS ✔️ Stripe, Clerk, Twilio, SendGrid Integration ✔️ SEO & Core Web Vitals Optimization ✔️ CI/CD & Deployment (Vercel, Coolify, Digital Ocean) ✔️ App Store & Play Store Publishing ✔️ AI Development

Coding is bae! and I love my bae more than anything. I have completed Master of Computer Applications and I'm a senior Full Stack Developer with extensive experience in building high quality products. I have 12+ years of experience. My experiences range building different applications. I'm a professional developer to provide a seamless experience to my clients. It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects. Let's assess your project: 1. Do you have a project scope written down? with detailed deliverables? user stories? acceptance criteria defined? That's the first thing we'll talk about: SCOPE. I need to know the goal to get you there. 2. Do you have a deadline defined? for each deliverable? and a responsible? That's second on the agenda. 3. Do you have regular status meetings? PM tools? communication tools? organized folders? That's 3rd: I'll create structure and build habits. Let's get it done! I'm flexible with my working hours and am happy to work closely with any existing freelancers you work with.