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A Flutter and React Native developer with 7+ years building cross-platform iOS and Android apps, AI-powered SaaS platforms, and BLE-connected IoT apps that ship, scale, and generate real results. 17+ live apps shipped. 10M+ users reached. $8.5M+ in startup funding secured through AI-powered MVPs. 100% Job Success Score. If you need a mobile app developer, AI engineer, or full stack developer who delivers without excuses keep reading. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📱 MOBILE APP DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Flutter Developer — cross-platform iOS & Android from a single codebase ✅ React Native Developer — cross-platform mobile apps ✅ Native iOS — Swift, SwiftUI ✅ Native Android — Kotlin, Jetpack Compose ✅ Offline-first architecture, real-time sync, WebSockets ✅ In-app purchases, Stripe, PayPal & payment gateway integration ✅ App Store & Google Play deployment, TestFlight, Fastlane CI/CD ✅ Pixel-perfect UI/UX from Figma Redux Toolkit, Zustand, Bloc, TanStack Query ✅ Push notifications, deep linking, camera, video, audio & chat Apps shipped: → Opty Sleep — AI-powered sleep optimization (health & wellness) → Chaser the Network — social platform scaled to thousands of active users → Medalite — BLE-connected LED light therapy mask controller (Flutter + ESP32) → Race Command — real-time motorsports command app (in progress) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔵 BLE & IoT MOBILE APPS (Rare Skill Set) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Most mobile developers cannot build apps that talk to hardware. I can. ✅ Bluetooth Low Energy (BLE) SDK integration in Flutter & React Native ✅ ESP32 firmware communication via BLE ✅ NFC, AR, and real-time IoT monitoring & control apps ✅ Hardware-connected medtech and wellness apps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤖 AI ENGINEER & GENERATIVE AI DEVELOPER ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ ChatGPT integration — GPT-4, GPT-4o API ✅ Generative AI app development ✅ AI chatbot development — customer support, internal tools, SaaS ✅ OpenAI, Claude (Anthropic), Gemini & Groq API integration ✅ Prompt engineering & fine-tuning ✅ LangChain & LlamaIndex — RAG pipelines, AI agents, vector search ✅ pgvector & Pinecone for semantic vector databases ✅ AI automation — n8n, Make, Zapier ✅ AI-powered MVP development for funded startups ✅ No-code AI tools — Cursor AI, v0 by Vercel, Bolt New, Lovable ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌐 FULL STACK DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Frontend: React.js, Next.js 15 (App Router, SSR/SSG, Server Components), TypeScript, Angular, Vue.js, Nuxt.js, Tailwind CSS, Framer Motion Backend: Node.js, NestJS, Express.js, FastAPI, Django, Flask, Java Spring Boot, Laravel APIs: RESTful API, GraphQL with Apollo, WebSockets with Socket IO, event-driven microservices Databases: PostgreSQL (pgvector), MongoDB, Firebase (Realtime DB + Firestore), MySQL, Redis, SQLite Cloud & DevOps: AWS (EC2, S3, Lambda, SageMaker), GCP, Azure, Docker, Kubernetes, GitHub Actions, Jenkins CI/CD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏭 INDUSTRIES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Healthcare & MedTech | Fintech | IoT & Firmware | E-commerce | Real Estate | Entertainment | Fitness & Wellness | Social Networking | EdTech | Automotive | SaaS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤝 HOW I WORK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ → Milestone plan agreed before any code is written → Weekly written memos — what's done, what's next, what needs your input → 48-hour response guarantee — I never go silent mid-project → Billing breakdowns at every milestone — zero invoice surprises → 30+ hours/week availability | Fluent English ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 LET'S BUILD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Startup building an AI-powered MVP? Business scaling a mobile platform? Hardware company that needs a BLE-connected app? Click Invite to Job let's talk.

As a senior software engineer and architect, I have over 25 years experience partnering with businesses to transform their ideas into functional software products. I excel at software engineering, software architecture design and planning, leading development teams, writing technical specifications, and designing user interfaces and experiences. My work spans development of both enterprise and consumer applications with a focus on artificial intelligence, e-commerce and online payments, iOS and Android applications, API integrations, hardware integrations, server administration, automations, content management, web development, and SEO - all with an emphasis on exceptional design. I understand the importance of striking a balance between timeline, budget and feature set when designing and phasing a project, ensuring it works realistically within a business’ constraints. My communication style is clear, concise and transparent. When you hire me, you gain a team player that takes full ownership of his assignments and is guided by a relentless work ethic. I am proactive in looking ahead for potential issues and opportunities, and provide these insights as continuous feedback to stakeholders. While I am eager to discuss projects both large and small, simple and complex, covering a wide range of disciplines, below is a list of areas where I have deep expertise: Artificial Intelligence Extensive experience implementing AI technologies, including custom AI agents, conversational chatbots, recommendation engines, automated decision-making, predictive analytics, personalized user interactions, and content analysis/generation. Skilled in prompt engineering, model fine-tuning, and building hybrid systems combining multiple AI models with traditional software components. Proficient in integrating frontier models from OpenAI, Anthropic, Google, and Meta. I maintain expert knowledge of current and forthcoming offerings, enabling me to guide clients in selecting services that deliver optimal output at economical costs. API Integration Deep expertise building secure, efficient, and well-documented API integrations, including RESTful, GraphQL, legacy services (SOAP, XML-RPC), OAuth and other authentication protocols, and real-time data synchronization. My integration experience includes: Stripe, Plaid, Square, Twilio, SendGrid, Slack, Google/Bing/Meta Ads, Salesforce, HubSpot, Pipedrive, Google Docs/Sheets/Drive, Klaviyo, Mailchimp, Hootsuite, Monday.com, Quickbase, Teamwork, Asana, Quickbooks, NetSuite, Zendesk, Freshdesk, Intercom, DocuSign, Google Analytics, Mixpanel, Segment, Google Maps, Mapbox, and more. DevOps and Server Administration Twenty years experience in setup, migration, and maintenance of Unix/Linux hosting environments, including 15 years managing AWS infrastructure as well as Azure, Google Cloud, Heroku, Cloudflare, and others. Skilled in optimizing performance, ensuring availability, load balancing, security hardening, automated deployments, monitoring and alerting systems, and maintenance automation. Thrives during emergency situations and catastrophic failures under extreme pressure. E-commerce I’ve developed custom e-commerce offerings that have processed over a billion dollars in transactions. Functionality has included payment processing integrations, bi-directional third-party inventory management and POS integrations, fulfillment pipelines, subscription services, and high volume architectures processing thousands of orders per minute. Android & iOS Development Ten years of experience building native and non-native Android & iOS apps and supporting API suites with hundreds of App Store and Google Play submissions. Feature sets include e-commerce, push notifications, user authentication, location services, deep linking, barcode scanning, and Bluetooth low energy (BLE) beacons. Cannabis Tech Fourteen years experience developing software for cannabis dispensaries and MSOs, including online ordering, in-store kiosks, in-store TV menus, and Android/iOS apps. Expert knowledge integrating with cannabis POS platforms and APIs, including Dutchie POS (formerly LeafLogix) and Dutchie Plus, Jane POS and Jane Roots, Treez, BioTrack, Greenbits, Blaze, Flowhub and MJ Platform, as well as delivery logistics platforms like Onfleet and Detrack. Subject matter expert on Android and iOS apps for dispensaries, having submitted more dispensary apps than any other developer in the world. Fractional CTO & Consulting Apart from software development, I also offer fractional CTO services as well as consultation services to businesses during the idea conception, planning, and pre-production phases of their software projects. This can include product design, strategic planning, technical feasibility analysis, market research, risk assessment, budgeting and cost estimation, project scoping, workflow design, team structure and roles, RFP creation and management, and vendor selection and staffing.

Alain is a multi-faceted Software Developer based in New York, specializing in immersive technologies, interactive design, and full-stack development. With a strong command of C#, C++, Swift, JavaScript/TypeScript, Python, Java, and Kotlin, he develops performant, scalable, and visually refined applications across multiple platforms. His technical repertoire spans Unity, Lightship ARDK (Niantic), ARKit/ARCore, Mapbox, and Meta Quest (Quest 3), blending creativity and engineering to craft immersive AR/VR experiences. On the backend, Alain expertly integrates PostgreSQL, MySQL, MongoDB, DynamoDB, and Firestore with robust APIs and secure cloud infrastructure powered by AWS, Firebase, and Azure. An advocate of Agile methodologies (Scrum) and clean architectural principles, he combines deep technical insight with a designer’s precision in UI/UX, animation, and professional 2D design. His portfolio features launched applications on iOS and Google Play and enterprise-grade solutions for Henry Schein and Barbie, demonstrating his capacity to fuse technical excellence with human-centered design.

SUMMARY: 8 years in software development. Expertise in FlutterFlow, Flutter, AppStore & Google Play deployment, Claude Fable, Claude Opus4.8, Claude GStack agents, Claude cowork, Claude Code, GPT API, AWS (ECS/Fargate, Dynamo, SQS queue, Event Bridge, Kubernetes), Firebase, GitHub, Terraform, Circle CI, C# and DotNet 6. Proficient in English, Spanish and Chinese. High level AI web scraping. FlutterFlow Mobile App Development: * Cambalachero: Android, iOS

I'm an Android-first software developer with 10 years of professional experience, 9 of which have been focused on mobile app development. Kotlin and Jetpack Compose are my home base, and I care a lot about architecture, testing, and release discipline. Most of my career has been on a consumer Android app with 500k+ Google Play downloads, including work across a dual-flavor codebase supporting two distinct apps from a shared foundation. This work included things such as feature development, API integration and error handling, SDK integrations, and memory leak diagnosis with Android Studio Profiler and LeakCanary. I also built iOS features in Swift and SwiftUI during that time. Now I work as a software developer at Batteries Included, LLC, taking on web and native mobile projects with a focus on modular, maintainable code. I'm the kind of developer who likes shipping complete things. I even built my own portfolio site in SolidJS, TypeScript, and Tailwind because I like understanding the full product surface. Lately I've been exploring Kotlin Multiplatform: shared logic, shared tests, practical multi-target Gradle setups, finding the right balance between shared code and platform-native experience. Off the clock I'm usually knitting, riding my bike, building LEGO sets, or hanging out with my cats, dogs, and chickens.

𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝟏𝟎+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 | 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐅𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 | 𝟏𝟎𝟎% 𝐉𝐒𝐒 Searching for a Mobile App Developer who ships mobile apps that actually hold up once real users hit them? If you've been burned before with a mobile app that shipped late, broke under real users, or left you stuck with code no other mobile app developer could pick up, you already know the difference a senior mobile app developer makes. I'm a React Native developer and Flutter developer with 10+ years of full-stack engineering behind me, and I build production-ready iOS and Android mobile apps. I take them from empty repo to live on the store, and I build them to hold up after launch. 𝐀 𝐟𝐞𝐰 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬 𝐈'𝐯𝐞 𝐬𝐡𝐢𝐩𝐩𝐞𝐝: a real estate mobile app with a built-in AI property assistant, a conference mobile app that passed 50,000 downloads and held a 4.9-star rating across the App Store and Google Play, and a satellite-data farming platform I led as mobile app developer for 8 months that served 10,000+ active users without breaking a sweat. I've taken mobile apps from empty repo to launched in as little as 6 weeks. Different industries, same standard every time. 𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐛𝐮𝐢𝐥𝐝 𝐟𝐨𝐫 𝐲𝐨𝐮 𝐚𝐬 𝐲𝐨𝐮𝐫 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫, 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐨𝐫 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫: • One codebase for your mobile app in React Native or Flutter that ships to both iOS and Android, so you pay for one build instead of two • Pixel-perfect mobile app screens from your Figma or Adobe XD, so the mobile app looks exactly like the design and not a rough copy • A backend built to scale with Node.js, Python, Firebase, Supabase, MongoDB, or PostgreSQL, so it holds up when your users grow • App Store and Google Play submission handled from start to finish, so you're not stuck fighting rejections on launch day • Maintenance, performance, and new features after launch, so your mobile app keeps improving instead of rotting As the React Native developer or Flutter Developer on your project, I own your entire build from first commit to launch day, and I stay accountable for how it performs after. 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐲𝐨𝐮: • We start with a quick chat or call to understand your idea and your business goals, so the mobile app we build actually drives revenue and growth, not just looks nice • Then I come back with a clear technical plan and the right architecture, so you spend your budget once and never pay later to rebuild a shaky foundation • I design and build your mobile app in React Native or Flutter with working builds you test as we go, so you steer the product the whole way and get exactly the mobile app you pictured • I test hard across iOS and Android and handle full App Store and Google Play submission, so you launch clean, on time, and without the rejections that stall most mobile apps • After launch I stay on for maintenance and new features, so your mobile app keeps growing with your users instead of slowly breaking behind you 𝐖𝐡𝐲 𝐬𝐞𝐫𝐢𝐨𝐮𝐬 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐡𝐢𝐫𝐞 𝐦𝐞 𝐚𝐧𝐝 𝐬𝐭𝐚𝐲: • 100% five-star rating across every project, with zero exceptions • Clients who come back for their next build and keep me on long-term • Real client words: "quickly grasped what I needed and needed little to no guidance," and "delivered everything as promised with great attention to detail" • I reply fast, I hit deadlines, and I tell you the truth even when it's not what you want to hear 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐛𝐮𝐢𝐥𝐝 𝐲𝐨𝐮𝐫 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩? 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 or 𝐢𝐧𝐯𝐢𝐭𝐞 𝐦𝐞 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐣𝐨𝐛 with your idea, even if it's still rough. If you're serious about building a mobile app that lasts and you want an experienced Flutter developer and React Native developer to own it start to finish, let's talk.