I help healthcare companies and digital health teams build mobile apps faster, securely, and cost-efficiently, especially for connected devices, BLE integrations, and regulated environments. Instead of managing separate codebases, I deliver a single, scalable cross-platform architecture that supports medical-grade mobile applications, reduces development time by 40–60%, and maintains native performance. My focus goes beyond standard mobile development — I specialize in healthcare ecosystems, including: • Connected medical devices & wearables (BLE, IoT) • Real-time and near real-time health data processing • Apple Health / Google Fit integrations • HIPAA-aligned architectures & secure data handling • Remote patient monitoring & digital therapeutics apps Whether you're building an MVP or scaling an existing product, I help you choose the right architecture, avoid costly mistakes, and accelerate time to market. 𝙁𝙖𝙘𝙩𝙨 𝙖𝙗𝙤𝙪𝙩 𝙢𝙚 🏅 Built 100+ mobile applications across Flutter, iOS and Android 🚀 15+ years in mobile development including Flutter mobile development 🏆 Founded a technology company acquired by Microsoft 🌐 Developed developer tools acquired by AWS 🎯 Built products across Healthcare, IoT, Travel, Ecommerce and SaaS 💰 Helped startups launch profitable mobile products for iOS and Android 🔍 𝙃𝙤𝙬 𝙄 𝙃𝙚𝙡𝙥 𝙁𝙤𝙪𝙣𝙙𝙚𝙧𝙨 Whether you're building a startup MVP, SaaS platform, marketplace app or scaling an existing mobile development product for iOS and Android, I deliver production-ready Flutter mobile apps using modern mobile development architecture. 𝙈𝙮 𝙬𝙤𝙧𝙠𝙛𝙡𝙤𝙬 𝙛𝙤𝙘𝙪𝙨𝙚𝙨 𝙤𝙣: ✔ Fast MVP mobile development for startups ✔ Clean and scalable Flutter mobile development architecture ✔ Stable Flutter builds for iOS and Android ✔ High-performance UI and animations for Flutter mobile apps ✔ Long-term scalability in mobile development This approach helps companies reduce mobile development costs and launch faster across iOS and Android markets. 𝙎𝙝𝙤𝙧𝙩 𝙥𝙞𝙩𝙘𝙝 I'm a Senior Flutter Developer / iOS & Android Mobile App Developer with 15+ years of experience in mobile development. I design and scale mobile applications for iOS and Android using Flutter mobile development, Dart, Swift, Kotlin, Android development and iOS development combined with modern mobile architecture. Whether you need a Flutter developer, cross-platform mobile developer, startup MVP engineer, or mobile development expert for iOS and Android, I’ve got you covered. 𝙁𝙪𝙡𝙡 𝙡𝙞𝙨𝙩 𝙤𝙛 𝙢𝙮 𝙨𝙠𝙞𝙡𝙡𝙨 📱 Mobile Development: Flutter, Dart, Swift, SwiftUI, Objective-C, Kotlin, Java, Android, iOS 📲 Mobile Architecture: Flutter architecture, BLoC, Provider, Riverpod, Clean Architecture, MVVM 🖥 Web: TypeScript, JavaScript, React.js, Next.js 🔗 Backend & APIs: REST APIs, Firebase, GraphQL, WebSockets 🗄 Databases: SQLite, Firestore, MySQL, PostgreSQL ⚙ Tools: Git, CI/CD, Fastlane, TestFlight, Firebase With over a decade in mobile development, I also help with mobile product strategy, Flutter architecture consulting, AI integrations, backend infrastructure and full-stack development for mobile products. 𝙄𝙛 𝙮𝙤𝙪'𝙙 𝙡𝙞𝙠𝙚, 𝙛𝙚𝙚𝙡 𝙛𝙧𝙚𝙚 𝙩𝙤 𝙘𝙡𝙞𝙘𝙠 𝙩𝙝𝙚 𝙜𝙧𝙚𝙚𝙣 "𝙎𝙚𝙣𝙙 𝙖 𝙢𝙚𝙨𝙨𝙖𝙜𝙚" 𝙗𝙪𝙩𝙩𝙤𝙣 𝙖𝙣𝙙 𝙩𝙚𝙡𝙡 𝙢𝙚 𝙢𝙤𝙧𝙚 𝙖𝙗𝙤𝙪𝙩 𝙮𝙤𝙪𝙧 𝙢𝙤𝙗𝙞𝙡𝙚 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩🚀 Over the years I’ve delivered Flutter mobile development solutions for iOS and Android startups, SaaS platforms and enterprise mobile applications, helping companies scale mobile development products across Flutter, iOS and Android environments. Flutter developer focused on Flutter mobile development for iOS and Android applications. Experienced in building scalable Flutter mobile apps for iOS and Android using modern mobile development architecture. I design and deliver Flutter mobile development solutions for iOS and Android startups, SaaS products and enterprise platforms. My work combines Flutter mobile development, iOS development and Android development to deliver stable mobile applications with high performance across Flutter, iOS and Android. 7/04

Hello! Welcome to my profile! I am a US Citizen. I am a certified AWS Cloud Solutions Architect Associate and Terraform Associate. I am a senior software developer with a high level of experience in Python programming. I have plenty of experience with deep learning and machine learning, including NPL. I have also worked with API's, webapps (Flask and Django), cloud systems (AWS), socket programming, and web scraping/automation.

Co-Founder & CEO of IT-Dimension, IT engineer, and project coordinator with deep hands-on expertise. Since 2007, I’ve led the delivery of 600+ custom software products and acted as a technical partner in 10+ SaaS ventures, taking them from idea to scalable success. In IT-Dimension we create software of any complexity to boost business in a wide range of industries: Industry 4.0 & Internet of Things (including Robotics + hardware development), Logistics/Transportation, Media & Entertainment, Healthcare/Wellness, Social Apps, AI Business Automation, GameDev, AR/VR, and far beyond. We offer deep and wide expertise in the following areas: 📌Strategic AI Adoption & Implementation Consulting 📌Web Backend: Node.js, NextJS, Express, Python, C++, .NET Core, ASP.NET Core, PHP, Go, Java, Kotlin 📌Web Frontend: Angular, React, Vue, Blazor 📌Mobile Development: Xamarin, Swift, Objective-C, C++, Kotlin, Java, Flutter, React Native, 📌Desktop Development: C#/.NET, WPF/Xamarin, C++, wxWidgets, Qt 📌UI/UX: User Interface Research, User Scenarios, User Interface Design, Usability Testing, Wireframing, Prototyping, UX Research, UX Writing, App design, web design, Visual Communication, UI/UX audit, custom graphics, brand identity 📌AR/VR: Unity, AR Foundation, AR Kit, AR Core, Kinect, Computer Vision, ML/AI 📌3D Modeling, Animation, Video Montage: Blender, Metahuman, Cinema 4D, Speedtree, DaVinci Resolve, Marmoset 📌Industrial Blockchain Sulutions: Web3.js, Solidity, C++, Go, Rust 📌Hardware Prototyping and Embedded: C, C++, Python 📌Cloud Platforms: AWS, Google Cloud, Azure, Heroku, Docker, DigitalOcean, Kubernetes, Terraform Partnering with IT-Dimension gets you: ❇️ In-depth Technology Consultation ❇️ Professional UI/UX Design ❇️ AI-first approach and AI integrations ❇️ Dedicated Software Development ❇️ Project Management ❇️ Quality Assurance ❇️ Deployment and DevOps Services ❇️ Software Maintenance and Enhancement Why choose IT-Dimension? 🔷 Dedicated multinational onshore/offshore teams (US, Europe located, different time zones) 🔷 16+ years of technological expertise 🔷 Swift and efficient project initiation 🔷 Deep-rooted expertise in 20+ domains 🔷 Personalized project handling 🔷 Innovative thinking for maximizing results

Envion Software helps companies build, modernize, and recover stalled software projects through senior engineering teams, fixed-cost projects, and time-and-materials development. We work with startups, growing companies, and established businesses that need reliable execution across full-stack development, cloud, DevOps, AI/LLM applications, data engineering, mobile, embedded systems, firmware, IoT, and legacy modernization. We can augment your existing team, take ownership of a defined project, or step into a stalled codebase to stabilize architecture, improve delivery, and restore forward progress. Clients choose Envion when they need experienced engineers who understand complex systems quickly, integrate smoothly with existing teams, and deliver dependable results.

About Me I have 25+ years of experience in partial CTO, CEO, Mobile App Development Project Management, specializing in Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, React Native, Redux Flutter, Firebase, Mongo Db, User Authentication, EHR, FHIR, HL7, HIPAA compliance, Typescripts, and AI-driven applications. My expertise spans iOS & Android development, AI-powered solutions, seamless authentication systems, and full-stack capabilities, ensuring modern, high-performance apps for businesses of all sizes. Our Agency Since July 2017, my wife, our talented 55+ team members, and I have been delivering world-class digital solutions. - 150+ apps successfully delivered across multiple platforms in the last year - $4M+ turnover on Upwork - 500+ successful projects, 15,000+ hours worked - Close to a 100% success rate - Worked with 7, 8, and 9-figure businesses Our Expertise Mobile App Development • Android, iOS, & Cross-Platform Apps (Java, Kotlin, Swift, Objective C, React Native, Flutter) Web & Full Stack Development • Front-End: React.js, Angular.js, Next.js, WebRTC • Back-End: Node.js, Firebase, MongoDB, PostgreSQL • Cloud Deployment & API Integrations E-commerce & CMS Development • Shopify Developer & Customization • WordPress Developer & WooCommerce Solutions UI/UX Design & Branding • Adobe XD, Figma, Photoshop, Sketch Digital Growth & Security • SEO & Digital Marketing Optimization • Data Security & Intellectual Property Protection Intellectual Property Services • Trademark & Copyright Assistance Why Choose SolidAppMaker? - Tailored Approach: Every project is customized to fit your needs and budget. - Agile Workflow: Regular updates, milestones, and transparent communication. - High-Quality Development: Rigorous testing & performance optimization. - Competitive Pricing: Top-tier services at fair and transparent pricing. - Proven Track Record: Experience with MVPs, SaaS platforms, AI-driven apps, and enterprise solutions. Why SolidAppMaker Stands Out - 8+ years of expertise in UI/UX, mobile apps, SaaS & web development - 510+ projects successfully completed for startups & enterprises - 10+ awards & recognitions, featured on Upwork & top design platforms - 50+ countries served, delivering top-tier prototyping & development solutions Proven Results: - SaaS UI/UX enhancements boosted retention by 60% - Mobile UI redesigns reduced churn by 40% - Web App UX improvements increased task completion by 90% - eCommerce UI revamps increased sales by 70% Industries We Cover Healthcare, Transport, Retail, Asset Management, Real Estate, Dating, Nature/Wildlife, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Logistics, Manufacturing, Media and Publishing, Non-Profit, Sports and Fitness, Travel and Tourism, Utilities, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Business Innovations, Ecology, Human Resources, LegalTech, Lifestyle, Fashion, Marketing, Navigation, Education, E-learning. Highlighted Skills Project Planning, MVC Architecture and RESTful APIs, Front-end Technologies (React.js, HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (MongoDB, Firebase), User Authentication, Integration of Third-party APIs, Deployment to Cloud Platforms (AWS), Test-driven Development, Agile Methodologies (Scrum, Kanban), Security Technologies, QR Code Scanner, GPS and Mapping, Blockchain and NFT, ChatGPT and Artificial Intelligence. Flutter Developer 10+ years of experience As a Mobile App Developer and Full Stack Developer with deep expertise in SaaS Mobile App, ReactNative App I bring over a decade of experience in building high-performance cross-platform mobile application. As a talented Flutter Developer with good knowledge of cross-platform development, I specialize in crafting high-performance mobile apps for both iOS and Android platforms. I made more than 400 apps using Flutter. Flutter is my main tech stack, I helped dozens clients making top-performing apps using Flutter. I am a dedicated mobile app developer with extensive experience building cross-platform apps in Flutter, React Native, and Expo. As a full stack developer, I combine clean front-end design with robust back-end systems using Laravel, Node.js, or Firebase to deliver high-performance mobile solutions. FlutterDeveloper MobileApp AndroidDevelopment IOSDeveloper. Next Steps – Let’s Build Something Amazing! 📅 Would you be available for a 30-60 minute free consultation? During this meeting, we will: - Go over your project goals, technical needs, and budget. - Provide a project plan with a timeline and cost estimate. - Discuss the best development approach to fit your vision. 📩 Send me a message, and I’ll share the Upwork scheduler link so we can set up a time that works best for you. Looking forward to collaborating and creating something extraordinary! Best regards, John H Fijen

𝗛𝗲𝗹𝗽𝗶𝗻𝗴 𝘀𝘁𝗮𝗿𝘁𝘂𝗽𝘀 𝗮𝗻𝗱 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝘁𝘂𝗿𝗻 𝗶𝗱𝗲𝗮𝘀 𝗶𝗻𝘁𝗼 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹 𝗱𝗶𝗴𝗶𝘁𝗮𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀. Have an app idea but don't know where to start? Need to modernize existing software, integrate AI, automate business processes, or build a product that can grow with your business? You're in the right place. Building software isn't just about writing code. It's about making the right decisions from the beginning. The wrong technology, poor planning, or rushed development can cost months of time and thousands of dollars later. That's where I help. I work with startups, founders, and businesses that need more than someone who can code. They need a trusted technology partner who understands business goals, recommends the right solutions, and builds software that's designed to grow. Whether you're starting with a rough idea or improving an existing platform, I'll help you move from planning to launch with confidence while avoiding unnecessary complexity and costly mistakes. You focus on your business. I'll handle the technology. 𝗛𝗼𝘄 𝗜 𝗛𝗲𝗹𝗽 Every project is different, so every solution should be too. I help businesses: • Turn ideas into clear product roadmaps • Validate ideas with MVPs before large investments • Build SaaS platforms, AI solutions, web applications, and mobile apps • Modernize legacy systems and improve existing products • Automate repetitive business processes • Integrate payment gateways, third-party APIs, and enterprise systems • Design secure, scalable, and cost-effective cloud solutions • Continue improving products after launch with long-term support and new features 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗧𝗵𝗮𝘁 𝗠𝗮𝗸𝗲𝘀 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗦𝗲𝗻𝘀𝗲 Technology should help your business, not become another problem to manage. For example, if you're building an app for both iOS and Android, a cross-platform approach can often reduce development costs and future maintenance while delivering an excellent user experience. If you're launching a startup, we'll identify the smallest version of your product that delivers real value so you can validate your idea before making a larger investment. If AI can genuinely improve productivity, reduce manual work, or create a better customer experience, I'll show you where it adds value. If it doesn't, I'll recommend a simpler solution instead. Every recommendation starts with one simple question: "What's the smartest investment for your business?" 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 Technology is only part of a successful project. Communication, planning, and honest advice matter just as much. When we work together, you can expect: • Clear communication without unnecessary technical jargon • Practical recommendations focused on business outcomes • Transparent milestones and regular progress updates • Clean, scalable, and maintainable solutions • Honest feedback, even when a simpler solution is the better choice • A long-term partner who stays invested after launch My goal isn't to build another application. My goal is to build software that helps your business grow. 𝗣𝗿𝗼𝘃𝗲𝗻 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 I've partnered with startups, growing businesses, and enterprise organizations across Healthcare, FinTech, SaaS, AI, Logistics, E-Commerce, Real Estate, Government, and Enterprise Software. Highlights include: • 90+ Successful Projects Delivered • $200K+ Earned on Upwork • Products Serving 200,000+ Active Users • Long-Term Partnerships Across Multiple Industries 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 From MVPs to enterprise platforms, I help clients build reliable, scalable software using modern technologies including React, Angular, Next.js, Flutter, React Native, .NET, Python, Django, Node.js, AWS, Microsoft Azure, Docker, SQL Server, PostgreSQL, Firebase, OpenAI, AI automation, cloud architecture, payment integrations, and enterprise APIs. I don't recommend technologies because they're popular. I recommend them because they're the right fit for your product, your budget, and your long-term goals. 𝗟𝗲𝘁'𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 You don't need a detailed specification before reaching out. Some of my most successful projects started with a simple conversation and a rough idea. Whether you're building your first startup, improving an existing platform, integrating AI, or scaling a growing business, I'd love to hear what you're working on. Send me a message with your idea, your goals, or the challenge you're trying to solve. Together, we'll identify the best path forward and build a solution that's designed not just to launch, but to grow with your business.

🚀 SENIOR FULL-STACK AUTOMATION ENGINEER — AI · CRM/ERP · DevOps I build production AI agents, automation workflows, and end-to-end integrations as ONE technical partner — instead of clients juggling 3-4 specialists who blame each other when systems break. Trusted across 20+ verticals since 2019. 📊 TRACK RECORD (6+ years on Upwork) ✅ $1M+ earnings · 462 projects ($2K → $500K range) · 16,635 hours logged ✅ 100% Job Success Score · Top Rated Plus ✅ 5,000+ workflows deployed · $5M+ saved · 100K+ hours of manual work eliminated ✅ AI agents in production handling 10,000+ calls/month ✅ Certified partners: Monday, Make, Vapi, Retell AI, Palantir Foundry ✅ Supported by Retailbox team (15K+ combined hours) for surge capacity ✅ Average response under 4 hours · US East Coast (West Palm Beach, FL) ✅ Available 10-30 hrs/week or full-time burst engagements 🏆 RECENT WINS (anonymized) • AI Copilot for $500M+ investment portal — Salesforce + SharePoint + RAG, 4-month build • Multi-tenant AI SaaS for elder care lead intelligence — scraping + AI scoring + dashboard • Healthcare wound care platform — HIPAA-compliant, mobile + EMR + AI transcription • Estate Planning AI Copilot — Claude + custom legal workflows for law firm • B2B Outbound System — Apollo + Clay + Smartlead + AI personalization, 1,000+ leads/week • ERP transformation — QuickBooks → Tryton migration, custom Python pipeline • AI Acquisition Engine — Multi-source enrichment + LLM scoring for B2B sales team 🌐 INDUSTRIES Home Services & Trades (HVAC · Plumbing · Electrical · Roofing · Solar · Pool · Painting) · Healthcare & Medical (Clinics · Pharmacy · Health Insurance · EMR · HIPAA) · Financial Services (Mortgage · Insurance · Investment · Crypto · Payments) · Manufacturing (Cabinet · Furniture · Steel · Civil Engineering) · Real Estate & Property · Marketing & Sales Agencies (GHL · HubSpot) · Construction & Contractors · Legal & Compliance · Retail & E-commerce (Shopify · Amazon · WooCommerce) · SaaS & Tech Startups · Telecom · Trucking · and more. 🤖 WHAT I DELIVER AI Engineering • Custom AI agents (Claude, GPT, Gemini) with tool calling • MCP server development for enterprise systems • RAG with vector databases (Pinecone, Weaviate, Qdrant, pgvector) • LangChain, LangGraph, CrewAI orchestration • I use Claude Code, Cursor, Codex daily — ship 5× faster Workflow Automation • n8n, Zapier, Make, Windmill, Power Automate • Custom Python/Node replacing fragile no-code chains • ETL pipelines (CRM ↔ data warehouse, AI training data, ERP migrations) • Event-driven systems, drip campaigns, scheduled reports CRM/ERP Integration & Architecture • HubSpot, Salesforce, Zoho, Monday, Pipedrive, Dynamics 365, GHL, Close CRM • NetSuite, Odoo, QuickBooks, Xero, Stripe • Field service — ServiceTitan, Jobber, Housecall Pro • Healthcare — eClinicalWorks, FHIR, HL7 • Multi-system architectures (5+ platforms unified) Full-Stack Development • React, Next.js, Node.js, Python, FastAPI, Django • Mobile — React Native, native iOS/Android • AI dashboards, admin panels, internal tools • PostgreSQL, MongoDB, Redis DevOps & Cloud • AWS, GCP, Azure · Docker, Kubernetes, CI/CD • Production monitoring, observability, security • HIPAA / SOC2 / PCI-aware integrations Voice AI — Vapi, Retell AI, Bland AI, Twilio (when use case fits) 🎯 COMMON ASKS • Claude/GPT integration into your app or CRM • AI SDR that books meetings (Apollo + Clay + Smartlead + Claude) • RAG chatbot trained on your company data • CRM automation with AI lead scoring (HubSpot/SF/Zoho/GHL) • Field service workflow (ServiceTitan/Jobber + AI) • Internal AI dashboard for ops team (Retool/custom) • Migrate Zapier/Make spaghetti to maintainable code • AI-powered mobile MVP (React Native + Claude) • Voice AI receptionist (Vapi or Retell + CRM sync) • ETL pipeline (QuickBooks/NetSuite ↔ data warehouse) • Custom MCP server for your team's Claude 🎯 IDEAL FIT I serve all sizes: • SMB ($1K-$10K) — small but specific automation that pays back fast • Mid-market ($10K-$100K) — multi-month engagements, multi-system builds • Enterprise ($100K-$500K+) — strategic platform builds, AI-native systems Engagement models: • $2K-$15K fixed scope (1-6 weeks) • $50K+ for AI/full-stack platform builds • $95-125/hr fractional (10-30 hrs/week, weekly Slack sprints) • Long-term Tech Support retainers 💼 HOW I WORK Week 1 — discovery + architecture · Week 2-N — weekly build sprints with daily Slack · Final week — production deploy with docs, tests, handoff. You own the code (zero agency lock-in). Available for ongoing maintenance OR clean handoff to your in-house team. 💬 NEXT STEP Send a 2-3 sentence brief: what you're building, your current stack, and the specific problem you want solved. Loom walkthroughs, existing repos, and architecture diagrams welcome.

I’m Luis, a results-driven Senior Technical Manager and Full-Stack Software Engineer with 22+ years of experience designing, developing, and delivering scalable, high-performance solutions for enterprise and mid-size clients. What I Bring to Your Project: - Full-stack expertise across JavaScript/TypeScript, Python, C#, .NET, Node.js, React, Next.js, Django, NestJS, Laravel, and mobile development with Flutter and React Native. - Extensive experience building cloud-native systems on AWS and Azure, including CI/CD pipelines, containerization (Docker, Kubernetes), and serverless architectures. - Strong skills in database design and optimization with PostgreSQL, MySQL, SQL Server, MongoDB, and DynamoDB. - Proven ability to architect microservices and APIs (RESTful, GraphQL, event-driven using Kafka and SQS) focused on scalability and resilience. - Deep knowledge integrating AI/ML solutions such as OCR, intelligent document processing, and OpenAI LLM APIs. - Expertise in integrating third-party services and payment platforms, including Stripe, PayPal, Twilio, Firebase, SendGrid, Cognito, Auth0, and HubSpot. - Solid background in application and system design, ensuring intuitive UI/UX, secure platforms, and smooth business workflows. Agility, Quality, and On-Time Delivery: - Consistently delivers MVPs and production-ready systems on time and within scope, even on complex, multi-role projects. - Writes clean, maintainable, and well-documented code to facilitate fast iteration and easy scaling. - Quickly understands and refactors legacy systems, enhancing architecture and code clarity to reduce technical debt. Leadership That Drives Success: - 10+ years leading Agile, cross-functional teams spanning backend, frontend, DevOps, QA, and mobile development. - Experienced in project rescue and legacy modernization with minimal disruption to ongoing operations. - Skilled in hiring, mentoring, and building autonomous teams aligned with best practices and company goals. If you need to build, scale, or modernize your software product with a partner who values speed, quality, and strategic vision, let’s connect and create something great together.

With over a decade of experience, I have built complete connected hardware products - from PCB design and firmware to mobile apps and cloud infrastructure. Most teams build the software. We build the entire product. My name is Alex Polchert, co-founder at Imajine. Our team delivers end-to-end IoT and hardware development, from the first circuit board prototype all the way through to the cloud platform and mobile app that connects to it. Our work is used by millions of users across the U.S. 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 & 𝗙𝗶𝗿𝗺𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 End-to-end hardware prototype development: CAD design, PCB manufacturing, component sourcing and testing, 3D-printed enclosures Firmware development for ESP32, Arduino, ESP8266 and custom microcontrollers Sensor sourcing, evaluation and integration: audio, PPG, ECG, motion, temperature, gas, and more Embedded audio and signal processing for real-time detection and alerts BOM creation, component sourcing and manufacturing coordination OTA firmware updates and device provisioning Bluetooth Low Energy and WiFi connectivity and commissioning Technologies: ESP32, Arduino, ESP8266, C/C++, MQTT, BLE, AWS IoT Core, GCP IoT 𝗜𝗼𝗧 𝗖𝗹𝗼𝘂𝗱 & 𝗠𝗼𝗯𝗶𝗹𝗲 IoT cloud infrastructure setup: device provisioning, MQTT protocol, real-time data processing, OTA updates Mobile app development integrated with hardware libraries for Bluetooth and WiFi connection Web-based dashboards for real-time data display, alerts, device management and analytics Multi-role platforms connecting device installers, business admins and end users Custom AI/ML algorithms for device data interpretation and predictive alerts Technologies: AWS IoT Core, GCP, Node.js, Nest.js, Next.js, React.js, React Native, MongoDB, MySQL, Firebase, Twilio 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 & 𝗠𝗲𝗱𝗶𝗰𝗮𝗹 𝗜𝗼𝗧 Medical wearable device development: sensor integration, firmware, prototype to production Remote patient monitoring systems with real-time hospital web dashboards Telehealth and telemedicine platform development: video appointments, e-prescriptions, lab results HIPAA-compliant cloud infrastructure and data management Electronic Health Record and EMR system development Healthcare IoT: wearable devices, cloud infrastructure, mobile apps and clinical dashboards Technologies: HIPAA, FHIR, AWS Cognito, Vonage, Cronofy, Node.js, React.js, React Native, MySQL, MongoDB 𝗔𝗜/𝗠𝗟 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ChatGPT, OpenAI, and LLM-based web and mobile applications AI-based CRMs and sales automation Custom niche generative AI algorithms and integrations Computer vision, signal processing and real-time detection algorithms Data science and custom algorithm development Technologies: PyTorch, Python, Scikit-learn, Hugging Face, AWS SageMaker, BigML 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Custom marketplace development with Stripe Connect: KYC, payouts, business commission logic, identity verification Custom CRM development: analytics, KPI dashboards, PDF generation, email and SMS integrations Real estate platforms, social networks, fintech apps and SaaS products Multi-vendor and multi-role platforms serving millions of users Technologies: Stripe Connect, React.js, Next.js, Node.js, Nest.js, Vue.js, MongoDB, MySQL, DynamoDB, AWS, GCP, Firebase Whether you are building a hardware product from scratch, adding a connected app to an existing device, or scaling a software platform - our initial consultation is always free and no strings attached. Are you available for a quick chat to discuss your project?

I help startups and founders turn ideas into scalable SaaS products using React, Node.js, and AWS from initial concept to production-ready MVP. Over the past 10+ years, I’ve worked on multiple SaaS platforms, focusing on fast delivery, clean architecture, and long-term scalability. What I can help you with: Build your MVP from scratch (frontend + backend + cloud) Turn your concept or Figma designs into a working product Design scalable backend architecture (Node.js, PostgreSQL) Set up cloud infrastructure (AWS, CI/CD, deployments) Improve and refactor existing SaaS applications 💡 I don’t just write code - I help you make product and technical decisions to launch faster and avoid costly mistakes. 🧩 Relevant Experience 🔹 SaaS MVP Development Built multiple MVPs from scratch with React + Node.js Delivered production-ready apps within tight timelines Helped founders validate ideas and go to market faster 🔹 Backend & Architecture Designed scalable APIs (Node.js, Express/NestJS) Database design (PostgreSQL, MongoDB) Authentication, multi-tenant systems, integrations 🔹 Frontend Development React (hooks, state management, performance optimization) Clean UI implementation from Figma / designs 🔹 Cloud & DevOps AWS (EC2, RDS, S3, Lambda) CI/CD pipelines, Docker Deployment and monitoring setup AI-Driven Development Approach In addition to traditional software engineering, I actively use modern AI tools and workflows to accelerate development, improve code quality, and deliver solutions faster. My approach combines full-stack engineering expertise with AI-assisted development, allowing me to rapidly design architectures, generate reliable code components, automate repetitive tasks, and prototype complex features. By integrating AI into the development workflow, I can significantly reduce development time while maintaining high standards of scalability, performance, and maintainability. 📈 Example Outcomes Built MVP for a SaaS platform in 8–10 weeks from scratch Reduced infrastructure costs by 30% through AWS optimization Improved API performance by 2–3x for high-load applications ⚙️ Tech Stack React, Node.js, TypeScript, PostgreSQL, MongoDB, AWS, Docker, REST APIs, CI/CD 📩 If you’re looking to build or improve your SaaS product — feel free to reach out. Happy to jump on a quick call and discuss your idea.