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Most mobile apps in healthcare, wellness, and fitness don't fail because of missing features. They fail because they can't handle real-world usage. Slow screens. Broken sync. Unreliable data. And once users lose trust in a health app, they don't come back. That’s usually the moment I get involved. I'm a Senior Mobile App Developer with 15+ years of hands-on experience delivering iOS, Android, and cross-platform apps in healthcare, wellness, fitness, and connected systems where reliability matters as much as innovation. I don’t build quick demos; I build mobile systems that hold up under daily real-world use. A lot of my recent work sits at the intersection of mobile + healthcare + AI + GPS + connected devices. I’m selective about where intelligence and automation go. Features only stay when they improve outcomes or reduce friction. 📱 Mobile Development Expertise • Cross-Platform: React Native, Flutter (production apps) • Native iOS: Swift, SwiftUI, iPad apps • Native Android: Kotlin, Android features • Hybrid/Web: Ionic, WebRTC Focus Areas: • Real-world performance under heavy load • Offline-first systems, sync reliability, and state consistency • Clean, modular architecture • App Store & Google Play readiness 🗺️ GPS & Location Systems I build reliable location-based mobile systems that work in real conditions: • Real-time GPS tracking and route mapping • Background location tracking (battery-optimized) • Geofencing and location-triggered actions • Live location sharing • Fitness route tracking (running, cycling, walking) • Map integrations (Google Maps, Mapbox) These systems are designed to stay accurate even with weak signals, offline usage, and device restrictions. 📡 BLE & IoT Connected Systems I specialize in Bluetooth Low Energy (BLE) and IoT integrations where mobile apps connect to devices and sensors. • BLE device pairing and real-time communication • Wearable integrations (health & fitness tracking) • IoT systems using AWS IoT Core and Azure IoT • Sensor data streaming and sync • Background reconnection and stability handling I focus heavily on reliability: stable connections, clean reconnection logic, and consistent data sync. 🏥 Healthcare, Wellness & Fitness This is where most of my work lives: • Health tracking: vitals, symptoms, dashboards • Fitness apps: workouts, habits, progress systems • Wellness apps: journaling, meditation, mental health flows • Telemedicine: messaging, video consults, scheduling • GPS fitness tracking with real-time route analysis • Wearable + BLE health device integrations 🧠 Smart AI Integration AI is only used where it adds real value: • Personalized fitness and wellness insights • AI coaching and behavioral summaries • Journaling and guided health flows • OCR-based input for tracking • AI combined with GPS + sensor data ⚙️ Backend & Integrations • Node.js / Python (FastAPI) • Firebase & Supabase (real-time sync) • APIs, push notifications, in-app purchases • GPS + IoT data pipelines 📊 Impact • Fixed unstable wellness apps with sync issues • Built GPS-based fitness features with high retention • Delivered health MVPs without rewrites • Improved BLE reliability and reconnection stability • Integrated AI to reduce user friction, not add complexity 💬 How I Work Clients usually reach out when: • Apps break under real usage • GPS or BLE features are unreliable • MVPs need to become production-ready systems • AI needs to be integrated properly I’ll always point out what’s unnecessary early and clearly. 🏆 Additional Services 6 months free maintenance after launch Full IP transfer from day one (client GitHub) Agile development with regular updates App Store & Play Store deployment handled end-to-end I also work with no-code/low-code tools when it makes sense: Bubble, FlutterFlow, Webflow, Lovable, Base44 + AI APIs (Claude, GPT, OpenAI) 🧩 Core Skills Mobile App Development | iOS | Android | React Native | Flutter | Swift | Kotlin | AI Apps | Healthcare Apps | Fitness Apps | GPS Tracking Apps | Location-Based Services | Geofencing | Real-Time Tracking | BLE Development | IoT Integration | AWS IoT Core | Firebase | Supabase | WebRTC | API Integration | HIPAA-aware systems | In-App Purchases | App Store Deployment 🤝 Why Work With Me Healthcare, Fitness, Wellness, GPS, and connected systems aren’t just features. They need trust, stability, and real-world reliability. That’s what I focus on. 📧 Send me your project idea and I’ll give you a clear, practical next step. Rudy Pasillas

I build AI-powered SaaS & mobile apps that help startups launch fast and scale and AI trainer. From MVP to production, I handle everything—so you can focus on growth, users, and revenue. ⸻ 💡 What I Do * AI apps (GPT, Claude, automation workflows) * SaaS & MVP development (startup-focused) * Mobile apps (React Native / Expo) * Full-stack systems (React, Next.js, Node, Laravel) * APIs, payments, real-time features ⸻ ⚡ Proven Work * AI legal marketplace (USA) → smart search across 1.3M+ lawyers * BLE sports app (golf) → real-time device tracking with low latency * Healthcare platform → video consultations (WebRTC) ⸻ 🧠 Tech Stack GPT, Claude, Cursor, Replit React, Next.js, Node.js, Laravel React Native, Expo AWS, Vercel, GCP ⸻ 🎯 Why Clients Hire Me * I think like a founder, not just a developer * I build products that scale, not quick hacks * Clean architecture + fast execution * Clear, direct communication ⸻ 👉 Building something serious? Send an invite.

10+ Years as a Full stack developer and Fractional CTO - using React.js, React-Native, Vue.js, Node.js, Next.js, Nest.js, and overall Full stack development in web and mobile. 10+ Years specifically building SaaS projects. SaaS development from MVP to complex high loaded products. 10+ Projects built with high user load in the role of Full stack developer - Delivered robust applications with a 100% job success score. (As an example app called Niya has over 💲 50.000 💲 active users) As a Full stack developer - I’m using in frontend (React, Next.js, React Native Tailwind, shadcn and other style UI libraries, Vercel), backend (Node.js, MongoDB, PostgreSQL) Neon, Render, also deep work with supabase (popular for AI Vibe coding). Also as a Full stack developer I made over 15 apps using React Native CLI and React Native Expo, so I’m open to mobile app developer opportunities. I used to work separately as a web developer only as well. As a Fractional CTO I gained a skill to be more specific on the project stack based on project goals, budget and plans. Performance & Scalability - Being Full stack developer is not only to build and ship it’s also to optimized solutions for speed, SEO, and scalability. I have worked on SEO on domains with high domain authority. Worked a lot with different backend infra providers. Starting some basics, like serverless solutions, finishing AWS services. Agile Collaboration - Transparent communication, iterative workflows, and timely delivery. I used to be on some projects in the role of project manager as well, I know the right way to manage things. I handle the entire development lifecycle, from React Native UI UX design to backend architecture, API integration, cloud deployment, overall a whole full stack delivery.. Hey, I’m Myroslav, a full stack developer and Fractional CTO on steroids with AI usage and large knowledge as a React developer & Senior web developer & IOS developer & Android developer as well. with over 10 years of experience since 2016, specializing in the Full stack development with different technologies React.js, Node.js, Next.js, Nest.js, React-Native CLI, React-Native, Expo, Vue.js, in generally mostly javascript based. I really love mern and mern stack in general, but nowadays I'm using PostgreSQL for most of the projects. My focus as a full stack developer is to deliver a fully functional, and production ready MVP for you within 20-40 days, you don’t need to hire ux designer, I’ll handle everything in house. ). I can even handle your "Replit" or "Base44" or "Lovable" or any other AI/Vibe-coding tools you used to make your project. Making sure that we have a great structure & architecture of the application, and making sure it’s ready to get heavy lifting features later on, and supporting hundreds of thousands requests hourly bases. My Fractional CTO experience will bring a new breath to your project. Industries: In the past I worked a lot with heavy loaded services that requested difficult mapping, maps, routes integration, orders functionality, complex payment integrations. Also worked many times with Health and Wellness, Transport & Geo, Retail, Dating and Lifestyle, Food Delivery, Fintech and Banking, Entertainment and Media, Logistics and Manufacturing, Productivity and Education, Marketplaces and Advertising, Automotive and Travel. Frameworks and staff: as a full stack developer, I used a lot of mern and mern stack. I also have experience working as a react developer or web developer only, and full stack developer django in the past. For the last 4 years I've been actively going deep into LLMs and machine learning which is mostly python based, so I’d say I can call myself a senior python developer as well. Let’s Connect! GET YOUR MVP WITHIN 20 DAYS! Click the “Invite to Job” button, and let’s discuss turning your idea into reality.

🙋‍♂️ I've built quick test versions of apps in just 4 to 6 weeks, launching over 50 that together pulled in $5 million in starting funds. 💬 What Clients said about me: "Fantastic developer and pleasure to work with. Highly recommend. Alex is a talented developer, adheres to strict deadlines. Certainly a great addition to any development (front or backend) team." -- Evan Tousey -- "Alex is awesome! He's very quick at finishing tasks, and can deliver exactly what you're looking for. I wish I had more tasks for him to do, and would totally get Alex to work on other tasks. He also started working on the task in advance, and finished way before my timeline. Props to him!" -- Yannie Tan -- With more than 10 years walking the full path of app-building, I've teamed up with folks from new startups to big established camps. I listen deep to your dream, turn it into a working app that breathes life, and stick around to help it thrive on the market trail. 🛠️ Here's the toolkit I carry: - AI Integrations: OpenAI, Cursor, Claude, Sonar, Llama, LLM, Langchain, Generative AI, Agentic AI, Multi-Model, Vector DB, - Frontend: JavaScript, TypeScript, React.js, MUI, Next.js, HTML, CSS, Tailwind, ShadCN, Flutter, Dart. - Mobile: React Native, Expo, Flutter, Redux, Zustand, NativeBase, react-navigation, react-native-reanimated. - Backend: Node.js, Python, Django, Firebase, Supabase. - UI/UX: Figma, wireframes, prototypes, sharp designs. - Databases: MySQL, PostgreSQL, MongoDB. - DevOps/Cloud: AWS, GCP, Vercel, Agile/Jira. - Agile: Jira, Scrum, Asana, Trello. - Version Control: Git, GitHub, GitLab, Bitbucket. Tell me your vision and I'll go beyond with real results you can count. I hit goals and meet deadlines. Ready to lift your startup like raising a lodge? 📩 Send me a message or invitation, and let's build something amazing together. --- If you check my profile, I've got open spots right now (Last Updated: Feb 2026) Keyword: ARKit, AVKit, ClassKit, CloudKit, ClockKit, Core Bluetooth, Core Data, Core ML, EventKit, GameKit, HealthKit, HomeKit, MapKit, Metal API, PassKit, PushKit, SceneKit, SiriKit, SpriteKit, StoreKit, TVMLKit, UIKit, WatchKit, WebKit, iBeacon, iAd, GLKit, Apple Pay JS, Apple Xcode, SwiftUI, iOS SDK, Instruments, Apple Watch Application, Apple HealthKit, TestFlight, App Store Upload, Swift, Objective-C, Kotlin, Java, Dart, TypeScript, JavaScript, Python, PHP, HTML5, CSS3, React Native, Flutter, FlutterFlow, NativeScript, Angular, AngularJS, Mobile Angular UI, Firebase, AWS Amplify, Retrofit, RxSwift, SwiftyJSON, Dagger, Android Studio, Android SDK, Android NDK, Android Debug Bridge, Gradle, Mapbox, WebRTC, Kendo UI, CodeIgniter, MVC Framework, ARCore, Google Cloud Vision API, Google ML Kit, OpenAI API, ExpressJS, Node.js, GraphQL, RESTful Architecture, LangChain, SQLite, Realm Database, Firebase Realtime Database, Firebase Cloud Firestore, MySQL, MongoDB, Amazon DynamoDB, PostgreSQL, MariaDB, Redis, LevelDB, Android Room Persistence, Push Notifications, In-App Purchases, In-App Advertising, In-App Search, In-App Support, In-App Subscription, Payment Functionality, Payment Gateway Integration, Map Integration, Location-Based Service, Bluetooth, Camera, Microphone, QR & Barcode Scanner, Augmented Reality, Face Detection, Text-to-Speech, Motion Sensor, Click-to-Call, User Authentication, User Profile Creation, Social Media Account Integration, Chat & Messaging, Review or Feedback Collection, Offline Functionality, Application Security, Advanced Analytics, Mobile App Development, iOS Development, Android App Development, Hybrid App Development, Native App Development, AI Mobile App Development, Mobile App Bug Fix, Mobile App Improvement, Mobile App Redesign, Mobile App Testing, Mobile App Localization, Mobile App Development Consultation, App Feature Development, Custom App, iPad App Development, iPhone & iPad Apps, Apple Watch Application, AR Application, AR & VR Applications, VR Application, Ecommerce Functionality, HIPAA, Food Delivery Application, Telemedicine, SaaS, Mobile App Design, UI/UX Prototyping, User Interface Design, User Experience Design, User Flow, Figma, SwiftUI, Material UI, iPhone UI Design, Amazon Web Services, Google Cloud Vision API, Firebase, Node.js, GraphQL, API Development, API Integration, Google Maps API, Git, Agile Software Development, Full-Stack Development, Application Optimization, Application Improvement, Ecommerce, Analytics Dashboard, Flutter developer, Flutter app developer, Android app developer, iOS app developer, Cross-platform mobile developer, Mobile app development, AI mobile app developer, Artificial intelligence app development, Machine learning app integration, Firebase app developer, API integration Flutter, Hybrid app developer, AI solutions for mobile apps, AI app developer, Mobile App Developer, Senior Mobile App Developer, Mobile App Development, Dating App, Flutter Mobile App Development, Education App Developer, Mobile App Developer, Sa

🎯 100% Refund If I set the wrong expectations and can’t deliver. No questions asked. Top-Rated Plus, Upwork Top 1 Percent, Highly recommended. What do I offer: 1- 100% work satisfaction 2- 24/7 Support 3- On-time delivery 4- Enterprise quality 5- 15 Days of free support after completion of the project Cloud Architect with 10+ years of DevOps experience, specializing in scalable, platform-agnostic cloud infrastructures. Proven track record in high-scale environments. Proficient in Infrastructure as Code, automation, and scripting, with expertise in CI/CD, Cloud Services, and Infrastructure Automation. Skilled in building, deploying, and managing applications on AWS, GCP, Azure, and OCI, with a focus on robust monitoring and observability. ➜ Zazmic Inc, San Francisco, CA • Automation Tools: Terraform, Ansible • Cloud Platforms: GCP • Containerization: Docker, Helm charts • CI/CD: GitLab CI • Monitoring: HPA, Cloud Armour • Databases: Different kinds of databases on GCP ➜ Tripleseat, Concord, Massachusetts • Cloud Platforms: Azure, GCP • Containerization: Docker • CI/CD: Azure Pipelines, Azure DevOps • Monitoring: Grafana, Prometheus ➜ Century Communities, Inc., Greenwood Village, CO • Cloud Platforms: AWS, Oracle Cloud • Automation Tools: Lambda functions, Ansible • Containerization: Docker, AWS ECS, EKS • CI/CD: CircleCI, GitHub Actions, AWS CodePipeline • Monitoring: CloudWatch, CloudFront ➜ Summary: • Proficient in Kubernetes, I architect and manage clusters to facilitate agile and scalable application deployment. • Skilled in Infrastructure as Code (IaC), I employ Terraform, Ansible, and Chef to automate configuration and ensure uniform environments. • With hands-on experience in CI/CD pipeline creation and maintenance using Jenkins, GitLab CI, and Azure DevOps, I ensure the efficient and reliable delivery of software products. • Possessing a robust background in Linux/UNIX system administration, including expertise in managing RHEL environments. • Armed in scripting with Bash and Python to streamline automation processes and optimize operational efficiency. • Good Know how of monitoring and logging tools such as Elasticsearch, CloudWatch, Prometheus, and Grafana, enabling proactive monitoring of infrastructure and application health. • Experienced in VMware virtualization, proficiently managing VMs, executing V-motion operations, and maintaining Snapshots. • Adaptable to fast-paced 24/7 production environments, providing responsive on-call support, including weekends. • Successfully deployed and managed scalable microservices on Kubernetes clusters across GCP and AWS platforms. • Expertise extends to migrating on-premises workloads to the cloud, focusing on performance optimization and cost efficiency. • Possess proactive problem-solving and troubleshooting skills essential for maintaining high-quality production environments. • Strong communication and collaboration abilities, facilitating effective bridging of the gap between development and operations teams. ➜ Tools: Git, Ansible, AWS CloudFormation, ELK, GitLab, GitLab CI/CD, Terraform, Docker Compose, Grafana, Telegraf, CircleCI, Traefik, Amazon CloudWatch, Amazon Elastic Container Service (Amazon ECS), GitHub, VPN, AWS Fargate, Amazon CloudFront CDN, AWS IAM, Amazon Virtual Private Cloud, Docker Swarm, NGINX, Puppet, Jenkins, Amazon EKS, Amazon Simple Queue Service, RabbitMQ, Celery, TeamCity, Nagios, Makefile, AWS CodeDeploy, Confluence, AWS CodeBuild ➜ Platforms: Linux, Docker, Amazon Web Services, AWS Elastic Beanstalk, Amazon EC2, Kubernetes, AWS Lambda, Windows, Apache Kafka, JVM, Heroku, Azure, WordPress, New Relic, Windows Server, Google Cloud Platform, Blockchain, Rancher ➜ Storage: Amazon Aurora, Amazon S3, MySQL, MongoDB, InfluxDB, Redis, On-premise, Amazon DynamoDB, Redis Cache, Elasticsearch, MySQL, Databases, PostgreSQL ➜ Languages: Python, Bash, Java, PHP, Markdown, Go, JavaScript, SQL, TypeScript ➜ Frameworks: Flask, Django, Windows PowerShell, .NET, Serverless Framework ------------------------------------------------------------------------------------------------------ #CloudArchitect #DevOps #Kubernetes #Terraform#Azure #GCP #Docker #CI_CD #InfrastructureAsCode #CloudMigration #DevOpsEngineer #Automation #CloudInfrastructure #Microservices #CloudSecurity #NetworkSecurity #AWSCloud #AzureCloud #Serverless #AWSLambda #AzureDevOps #GitLabCI #GitHubActions #Linux #Unix #Bash #Python #GoLang #Java #Git #Ansible #Jenkins #NGINX #ApacheKafka #Databases #SQL #MySQL #PostgreSQL #MongoDB #Redis #DynamoDB #CloudStorage #S3 #CloudWatch #BackendInfrastructure #WebInfrastructure

Did you know that 68% of MVPs fail within months of launch? Budgets blow up. Deadlines slip. Most teams lose focus on what actually matters. Sound familiar? I'm Herman, CEO of Coding House Studio. As your future technical partner and a mobile app development team, we help advertising agencies and small to mid-size businesses launch MVPs the right way — fast, focused, and without cutting corners. We build products ready to grow, centered on the features that matter most, and designed to get your idea in front of real users as quickly as possible. We reduce time to market by 40% compared to traditional alternatives by focusing strictly on high-impact MVP features. We've been doing this for over five years and we understand what our clients need, often before they say it. More than 20 projects delivered across North America. In Q1 of 2026, three of our clients went live on both the App Store and Google Play. We know what it takes to go from idea to launch as a mobile app developer — and we help you get there without wasting time or money. Our mobile app developer team of 15 handles everything from rough notes to a polished, ready-to-launch product. Most projects ship in 4 to 12 weeks, with ongoing support if you need it. We use AI to build faster and smarter — and help our clients integrate AI directly into their own apps. You get a clear path from idea to a working mobile app that launches, gets users, and scales. Instead of just development, you get a mobile app developer team focused on real outcomes for iOS and Android. If your mobile app developer process slows down or becomes too complex, you get structure and clarity. If you already have a mobile app, you get help with new features, API integration, and performance improvements. If you are starting from scratch, you get a clear path to MVP launch with an experienced mobile app developer by your side. Our clients rely on us for transparency. We help you figure out what your MVP needs right now — and what can wait. If you're looking for a trusted mobile app developer partner to launch on time and on budget, we're here. 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 - Mobile app developer for iOS development and Android app development using Flutter, React Native, Swift, Kotlin, and Java, with strong focus on mobile app design, performance, and smartphone optimization - A clear MVP development process with fast time to market and structured app development - A full product built with backend systems, API integration, and scalable architecture using Node.js, JavaScript, Python, Firebase, and Supabase - Web application, admin dashboard, and user dashboard to support your product, built with a web developer approach using React and modern frontend tools, wordpress - Continuous product growth through mobile app improvement, mobile app redesign, and mobile app bug fix cycles You get experience from 20+ launched products across healthcare, SaaS platform, marketplaces, EdTech, and consumer apps. The focus is always the same. Your product works for real users, not just in code. 𝗪𝗵𝗮𝘁 𝗺𝗮𝗸𝗲𝘀 𝘁𝗵𝗲 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 You get a product that performs after launch, not just something that was built. No unnecessary complexity and no overengineering. You get AI integration, payment integration, subscription system, and real-time communication only where it actually improves your product. 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝘆𝗼𝘂 𝗰𝗮𝗻 𝗲𝘅𝗽𝗲𝗰𝘁 - 20+ mobile app developer projects launched across iOS and Android - Products with active users, subscription system, and real business logic built through mobile app developer - Scalable systems with API integration, admin dashboard, and user dashboard built from the start If you are looking for a mobile app developer who can take your idea to launch or move your product forward, send a message. You will get a clear breakdown of your idea and a step-by-step plan to launch your app faster. 𝘏𝘦𝘳𝘮𝘢𝘯 𝘒𝘳𝘢𝘷𝘤𝘩𝘦𝘯𝘬𝘰 𝘊𝘰𝘥𝘪𝘯𝘨𝘏𝘰𝘶𝘴𝘦𝘚𝘵𝘶𝘥𝘪𝘰 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝗮𝗻𝗱 𝗹𝗲𝘁’𝘀 𝘁𝗮𝗸𝗲 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽 𝗶𝗱𝗲𝗮 𝗳𝗿𝗼𝗺 𝗰𝗼𝗻𝗰𝗲𝗽𝘁 𝘁𝗼 𝗹𝗮𝘂𝗻𝗰𝗵.