Looking for a backend expert who can build robust web and desktop applications with scalable architecture? I’m a Backend Developer specializing in .NET, C#, Go, and cloud platforms, with 15+ years of experience delivering high-performance solutions. I combine deep technical expertise with practical architecture design, ensuring your projects are reliable, maintainable, and future-ready. - 15+ years of experience in Software Engineering - 4+ years average project duration - I’ve worked across various industries, including Retail, Healthcare, Fintech, and Sports - Created ERP, CRM, POS systems, complex web platforms, and desktop applications. - My experience also covers system architecture, requirements analysis, and deployment pipelines, helping businesses optimize workflows and scale efficiently. - Specialize in full lifecycle development (SDLC) and high-performance solutions with .NET, Go, and React - Design and implement distributed systems, AI-driven applications, cloud-native platforms, - Ensure secure, efficient, and resilient systems, including web portals, APIs, mobile apps, and IoT integrations Core Technologies & Skills: - Languages: C#, TypeScript, Go, C++ - Frameworks: .NET Core, ASP.NET MVC, Tauri, Gin, Avalonia, Blazor - Architecture & Design skills: Solution Architecture Principles, Design Patterns, DevOps and CI/CD Pipelines, Security and Compliance, Integration Architectures, Performance & Scalability Design, Data and Storage Architectures - Databases: Microsoft SQL, PostgreSQL, CosmosDB, Redis, Azure SQL - Front end: React, Next.js, Tailwind - Cloud Services: Azure, AWS, Vercel, Netlify, Supabase - Other: Rust, Docker, PlatformIO, Unity3D, Swift, Augmented Reality, TUI, IoT If you need someone who can turn complex backend requirements into scalable, high-performance applications, I’ll help bring your project to life. Explore my portfolio of projects delivered with my team at MobiDev, helping businesses across North America and Europe achieve their software goals.

Experienced full stack developer building complete web applications and mobile apps with modern technologies. Expertise in React, Node.js, Python, and Flutter for end-to-end development solutions. Full Stack Development Expertise Specialized in creating scalable web applications and mobile apps from concept to deployment. Proven track record delivering complete solutions across frontend, backend, database, and mobile platforms for startups and established businesses. Technical Skills Frontend Development: React.js with modern hooks, context, and state management TypeScript and JavaScript ES6+ Responsive design with CSS, Tailwind CSS, and Material-UI Single Page Applications (SPAs) and Progressive Web Apps Backend Development: Node.js with Express.js for REST APIs and microservices Python with Flask and Django for web applications RESTful API design and GraphQL implementation Database design with PostgreSQL, MySQL, and MongoDB Mobile Development: Flutter for cross-platform iOS and Android apps React Native for JavaScript-based mobile solutions App Store and Google Play Store deployment Mobile API integration and offline functionality Cloud & DevOps: AWS services: EC2, S3, RDS, Lambda, CloudFront Docker containerization and deployment CI/CD pipelines with GitHub Actions Database management and optimization Data & Visualization: Interactive charts with Chart.js, D3.js, and Flutter charting libraries Real-time dashboards and analytics platforms Data processing and API development Business intelligence and reporting systems Recent Project Highlights Full Stack Web Applications: React frontends with Node.js/Express backends User authentication and role-based access control Real-time data dashboards with interactive charts E-commerce platforms with payment integration Admin panels and content management systems Mobile Applications: Cross-platform Flutter apps with API integration Real-time monitoring and notification systems Offline-capable apps with local data storage Business productivity and data visualization apps Backend Systems: Scalable REST APIs serving web and mobile clients Database design and optimization for high-performance applications Third-party service integrations and webhook handling Automated deployment and monitoring systems Technology Stack Frontend: React, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS Backend: Node.js, Express.js, Python, Flask, Django Mobile: Flutter, React Native, Dart Databases: PostgreSQL, MySQL, MongoDB, SQLite Cloud: AWS (EC2, S3, RDS, Lambda), Firebase, Heroku Tools: Git, Docker, Webpack, npm/yarn, REST APIs, GraphQL Proven Results Delivered web applications and mobile apps with clean, maintainable code architecture. Apps published on major app stores with positive user feedback. Specialties: API-driven applications, real-time data systems, e-commerce platforms, business dashboards, and complete end-to-end development.

I help companies transform ambitious ideas into high-performance, scalable software. Whether you're a startup launching an MVP or an established business optimizing a complex system, I provide the strategic blueprint for success. As a seasoned software consultant, I specialize in the intersection of business strategy and technical execution. My consulting approach focuses on: ✅ Software Development Strategy & Consulting ✅ Technical Architecture & System Design Review ✅ Project Scoping & Requirements Definition ✅ Agile/Scrum Process Setup & Optimization ✅ Digital Marketing for Product Growth If you're looking for an experienced partner to help you plan, refine, or rescue your software project, let's connect. I'm ready to help you build better.

I'm a passionated mobile developer since 2013. I have year long experience with Android, Flutter and iOS. In 2024 I also started with Kotlin Multiplatform. I am the right partner for you, to develop a high-quality, easy-to-use and beautiful mobile app. I have my own apps in the Play Store & App Store, and also providing and contributing to some open source projects. My offers to you: • New & further development of mobile apps • Right framework decision • Managing Play Store & App Store • Support for legal topics • Reduce crashes and errors • Automated test & deployment processes

I help companies stabilize, modernize, and extend complex Android applications. With 15 years of professional Android experience, I specialize in Kotlin, Jetpack Compose, application architecture, SDK integration, and legacy modernization. I can join an existing Android project, understand its architecture quickly, identify the actual technical risks, and deliver improvements without unnecessarily rewriting the application.

I'm a Senior Full-Stack Developer with 10. +years of experience building web, mobile and backend systems for startups, growing business and enterprise teams. I specialize in turning product ideas into production ready software that is stable, scalable and easy to maintain.My work covers the full development lifestyle from architecture and implementation to deployment and long-term support. Over the years, I've built SaaS platforms, mobile applications, internal tools, eCommerce systems and AI- powered products.I'm comfortable working across frontend, backend,databases, cloud infrastructure and third-party integrations, which allows me to deliver complete solutions rather than isolated features. What I Work With Frontend: React, Next.js, TypeScript, Tailwind CSS Backend: Node.js, Python, .NET, REST APIs, GraphQL Mobile: React Native, Flutter, Android, iOS AI: LLM integrations, RAG pipelines, automation workflows Databases: PostgreSQL, MySQL, SQL Server, MongoDB, Redis Cloud & DevOps: AWS, Azure, GCP, Docker, Kubernetes, CI/CD What I Build SaaS platforms Custom business applications Mobile apps for iOS and Android API integrations and automation workflows AI-powered tools and chatbots Scalable backend systems and cloud infrastructure How I Work I focus on writing clean maintainable code and making sound technical decisions early. I communicate clearly, identify risks before they become problems and deliver software that is built to perform well under real world conditions. Whether you need someone to architect a new product, modernize an existing system or join your team as a senior contributor, I can help you move quickly and build with confidence. Skills Full-Stack Development • React • Next.js • TypeScript • Node.js • Python • .NET • REST API • GraphQL • PostgreSQL • MongoDB • AWS • Docker • Kubernetes • Mobile App Development • React Native • Flutter • Android • iOS • AI Integration • LLM • RAG • DevOps

Need to build an intelligent mobile application that talks to your custom data, databases, or documents? I can build it from backend architecture to frontend UI. I hold a Master's degree in Data Analysis and Artificial Intelligence from Hong Kong Baptist University and a Bachelor's in Software Engineering. I bridge the gap between AI development and cross-platform mobile apps—meaning you don't have to hire separate backend and mobile developers. I specialize in building RAG (Retrieval-Augmented Generation) applications, integrating AI agents, and wrapping them in premium, high-performance Flutter mobile interfaces. 🛠️ MY TECHNICAL STACK: • AI & Back-End: Python (FastAPI, Flask, LangChain, LlamaIndex) • Vector Databases: Pinecone, ChromaDB, pgvector • Mobile Front-End: Flutter, Dart (iOS, Android, Web) • API Integrations: OpenAI (ChatGPT), Anthropic (Claude), Google Gemini • Database & Cloud: PostgreSQL, Firebase, AWS 💼 FEATURED PROJECTS: • AI Language Tutor App: Cross-platform Flutter app integrated with conversational LLMs for real-time translation and language tutoring. • AI Wellness App: Built predictive ML models using biometric data to provide personalized health insights. • Custom Mobile RAG: PDF and database querying via local/cloud vector search. If you want an engineer who can turn complex AI capabilities into a smooth, native app that your users will love, click the green button to start a conversation!

I’m a senior software engineer with ~17 years in production systems and 9+ years working with clients on Upwork and off-platform. I originally worked here as a Salesforce developer; today my strongest leverage is Flutter: shipping complete mobile apps quickly, cleanly, and with good judgment. I’m not a “junior Flutter specialist” and I’m not a large team. I’m the person you bring in when you need one senior engineer who can take ownership, make good architectural decisions, and actually finish things. What I do best: 1. Build Flutter apps from scratch or take over existing ones 2. Turn vague ideas into concrete, working software 3. Move fast without creating messes you’ll regret later 4. Make pragmatic trade-offs instead of over-engineering

We help founders and teams build and launch mobile apps that actually ship. Whether you’re starting from scratch or picking up an existing project, our team takes full ownership and moves things forward. We handle everything needed to get your app live—so you don’t have to worry about the technical side. We specialize in building high-quality iOS and Android apps using Flutter. From frontend to backend, we cover the full development cycle, so you don’t need to manage multiple developers. We also take care of deployment, App Store and Google Play submissions, and everything required to run your app smoothly in production. Our experience includes MVPs, subscription-based apps, real-time systems, location-based features, Bluetooth integrations, and AI-powered functionality. We focus on clear communication, fast execution, and solving problems—not just writing code. What we typically help with: Turning ideas into fully launched apps Building and shipping MVPs quickly and efficiently Subscription systems and payments (Stripe, RevenueCat) Real-time features and backend architecture Maps, GPS, and location-based functionality AI integrations App Store & Google Play deployment Tech we use regularly: Flutter, Supabase, Firebase, PostgreSQL, REST APIs, RevenueCat, Stripe, Mapbox, OpenAI We’re a great fit for founders building MVPs, startups that need to move fast, and teams looking for a reliable development partner who takes ownership and delivers results. If you’re serious about building or launching your app, send us a message—we’re happy to jump on a quick call and discuss your project.

Every single day, your business is flushing money down the drain. If you are a local business owner (Auto Detailer, Plumber, HVAC Contractor, Roofer, Med Spa Owner) or a fast-scaling agency, your biggest enemy isn't your competitor—it’s SLUGGISH RESPONSE TIME. When you are busy under a car detailing a bumper, fixing a leaking pipe, or treating a patient, your phone rings. You miss the call. That prospect doesn't leave a voicemail; they immediately hang up and call the next business on Google. The exact same value leakage happens with unanswered Instagram DMs, Facebook messages, and webchat widgets. I stop that leakage. I turn your missed calls, abandoned chats, and cold databases into booked appointments automatically, while you focus on doing the actual work and scaling your business operations. 🚀 CORE AUTOMATION SYSTEMS I BUILD TO FIX YOUR REVENUE LEAKAGE: 1. ⚡ AI Missed-Call Text Back (The Ultimate ROI Multiplier) Missed a phone call while on a job site? Within 45 seconds, my system automatically fires a human-like, conversational text message to the prospect. It qualifies their problem, confirms your availability, and drops your live calendar booking link. You secure the job before they even think about calling a competitor. 2. 📲 Omni-Channel DM Closers (Instagram, Facebook & WhatsApp) Stop losing hot leads to the inbox graveyard. I integrate ManyChat with OpenAI to instantly respond to "How much?", "Where are you located?", or "Available today?" inquiries. The AI guides the conversation organically, moving the prospect from a random social media comment into a confirmed appointment on your calendar on autopilot. 3. 🔄 High-Volume Database Reactivation (DBR Workflows) Got a list of 500, 1,000, or 5,000+ past clients sitting completely dead in an old spreadsheet, Jobber, or legacy CRM? I design and execute smart, automated SMS and WhatsApp re-engagement waves. These workflows wake up your old customer base with highly targeted, no-brainer offers, completely filling your open calendar slots within 72 hours without spending a single dollar on new ads. 4. 🤖 Agentic Lead Qualification & Smart Triaging Stop wasting hours on the phone with tire-kickers who don't have the budget. I build AI qualification agents that textually vet incoming leads by project scope, location, budget, and urgency before they are ever allowed to book a slot on your sales calendar. You and your team only show up to talk to serious, high-intent buyers. --- 💼 INDUSTRY-SPECIFIC SOLUTIONS I DEPLOY: • HOME SERVICES (HVAC, Plumbing, Roofing, Electricians): Instant emergency dispatch triage, automated booking via SMS, immediate integration with field management software to sync customer data, and automated invoice follow-ups. • AUTO DETAILING & CERAMIC COATING: Visual quote-request estimators, instant photo-drop intake via messaging, automated maintenance reminders (e.g., "Your ceramic coating inspection is due!"), and automated Google Review requests post-service. • MED SPAS & AESTHETICS CLINICS: High-converting Instagram DM appointment setters, complex multi-step consultation intake forms, automated no-show protections (SMS/Email sequence reminders), and loyalty membership retention workflows. • REAL ESTATE & PROPERTY MANAGEMENT: 24/7 instant property inquiry handlers, automatic buyer/seller profiling, and instant calendar mapping for property walkthroughs and viewings. --- 🛠️ MY TECHNICAL STACK & ARCHITECTURE: • CRMs & Lead Hubs: GoHighLevel (GHL Snapshot Customization, Sub-Account Setups), HubSpot, Salesforce, ActiveCampaign. • Field Operations Tech: Jobber, Housecall Pro, ServiceTitan. • Automation & Logic Middleware: Zapier, Make dot com (Integromat), n8n. • AI, Voice & Communication: OpenAI API (ChatGPT), ManyChat, Twilio, VAPI (Autonomous Voice AI Receptionists). I pride myself on building clean, highly logical, and deeply tested systems. I don't just patch software together with fragile links—I map out fully redundant, production-grade business infrastructure that delivers measurable tracking, reduced headcount overhead, and undeniable ROI. Stop losing high-ticket revenue every single time you miss a notification on your phone. Let’s build an automated workforce that handles your front desk 24 hours a day, 7 days a week, 365 days a year. Please feel free to check out my portfolio section right here on this profile page to see my active system layouts, live workflow architectures, and visual case studies in action. Send me a message today, and let’s jump on a discovery call to map out the exact automation blueprint for your business