Fifteen years professional experience developing firmware for embedded devices, as well as applications and services which interface with those devices. Solutions commonly employ embedded systems with microcontrollers, PLCs, or ARM-based computers. Tasks include interfacing with the user and coordinating the operation of various electromechanical devices. Control software, prototypes, and tools developed using a variety of programming languages such as: C, C++, C#, Python, and the IEC 61131-3 PLC languages. Application design and implementation for a variety of platforms including: Windows, GNU/Linux, OSX, iOS, and Android. Development performed on GNU/Linux, Windows, and OS X systems using both proprietary and open-source tools like GCC, Visual Studio, and TwinCAT. Technical documentation and version control.

I design and ship production macOS and iOS apps in Swift and SwiftUI, going deeper than most: virtual cameras, system audio capture, Accessibility-API automation, BLE device integrations, and the App Store release pipelines that get it all out the door. What I've shipped: Consumer iOS/macOS apps on the App Store — pet-safety monitoring with CloudKit two-device pairing, a SwiftUI menubar calculator, BLE health-device apps that reverse-engineer defunct hardware to keep it alive, and voice-transcription utilities monetized with StoreKit/RevenueCat System-level macOS — CoreMediaIO virtual cameras, ScreenCaptureKit capture, on-device AI overlays (WhisperKit + Foundation Models), and deep Accessibility-API automation to drive native apps that expose no API Production backend + clients — a Node.js/TypeScript WebSocket backend (Redis + PostgreSQL, horizontally scaled behind an ALB) bridging real-time messaging to CRMs, with native macOS and Windows clients Cross-platform desktop ecosystems — coordinated releases across macOS (Swift), Windows (.NET/WPF, Flutter), and Safari/Chrome/Firefox extensions Open source — I maintain forks of well-known macOS tools and a C++ routing engine, so I'm at home in large, unfamiliar codebases How I work: I take full ownership from concept to shipped product — architecture, implementation, signing/notarization, App Store submission, and release automation. I also step into technical-lead roles: setting architecture, aligning multi-repo systems, and bringing structure to projects that have outgrown their original design. My background spans CNC/CAD/CAM and manufacturing, which is why I'm especially effective on software-driven workflow optimization — turning manual, error-prone processes into reliable automated tools. Best fit for clients who need senior-level execution and decisive progress: someone who owns a hard problem end to end rather than waits for specs. If that's what you need, message me — happy to talk specifics.

🏆 Top-Rated PHP Developer | Real Estate IDX/RETS/MLS/RESO Specialist 💯 12+ Years of Experience | WordPress, Laravel, Symfony, CRM & API Integrations Are you a real estate agency, broker, or property tech startup looking to build or upgrade a powerful web platform? I specialize in building high-performance real estate websites powered by IDX, RETS, RESO, MLS, CREA DDF, and VOW feeds — with seamless CRM integration, lead generation tools, and user-friendly search interfaces. 🔹 Solutions I Deliver: - Custom Real Estate Websites (Agent, Broker, Team) - MLS & RESO Feed Integration (TRESTLE, BRIDGE, MLS GRID, SPARK API) - Interactive Map-Based Property Search - Neighborhood & Community Pages - Custom Branding + CRM + Search Alerts + Drip Emails - Mortgage Calculators, Blog, and Agent Portals - Third-Party IDX Integration (IDX Broker, Realtyna, iHomeFinder, dsIDXpress, etc.) - AI Chatbot 🔹 Tech Stack & Tools: - Languages: PHP, JavaScript, HTML5, CSS3, XML - Frameworks: Laravel, WordPress, Symfony, CodeIgniter, Bootstrap - CMS & Builders: Elementor, Divi, Gutenberg, WPBakery - Databases: MySQL, PostgreSQL, MongoDB - APIs: REST/RESO Web API, Payment Gateways, Google Maps, etc. - Version Control: Git, SourceTree 🔹 Why Work With Me? - 12+ years of full-cycle development experience - Deep expertise in real estate tech workflows - Trusted by clients across the US, Canada, and beyond - Reliable for ongoing support, maintenance & upgrades 📞 Let’s schedule a consultation to discuss your project needs. I’m confident you’ll want to work with me again and again — just like my returning clients.

Summary of Qualifications 1. Specialist on Mainframe Z/OS, AS/400 iSeries ,Windows Server 2019, UNIX and Linux systems. 2. Mainframe Development COBOL, JCL, VSAM, CICS 3. Development on AS/400 RPG/400, RPG ILE, CL/400, COBOL/400, SQL/400 4. Micro Focus Development COBOL, NetCOBOL, PeopleSoft 5. Data Migration on Mainframe and AS/400 to SQL Server and other Database 6. Development on Visual Studio 2022 - C#, VB.NET, ASP.NET 7. Development on Visual Studio - VB6, Visual FoxPro 9 8. Php/ MySql, ,HTML, XML, JavaScript, jQuery 9. Specialist Implement, maintain and customize ERP Systems (JD Edwards, Baan ERP) 10. Implement and maintain backend and Database of JD Edwards, Baan ERP System - BPCS, JD Edwards, Baan ERP Systems in AS/400 11. Open source Programs (Joomla, Zencart, Magento, Drupal,) 12. SAP/R3, SAP Business One Education: 1. Bachelor of Science in Information Systems - 1991, ACTON University – UK 2. Diploma in Computer System Design National Institute of Business Management (NIBM), Sri Lanka 3. Diploma in Computer System Design DMS Computer Center 4. Diploma in Advance Programming IDM Computer Studies Colombo, Sri Lanka 5. Advance Diploma in Computer Hardware Engineering 6. Advance Programming in JAVA Languages Career History 2009–2014 Acentria Solutions, Dubai, UAE Information Technology Manager- Habitat Hotel, Jeddah. KSA  Implement and maintain backend and Database of JD Edwards, Baan ERP System  Customize of JD Edwards, Baan ERP System reports in AS/400  Development Implement and maintain backend and Database of JD Edwards, Baan ERP System  Customize and Implement Application Software for organization ( RPG/400, RPG ILE, CL 400, Visual Basic .NET 2005, C#)  Monitoring & maintaining the internal network , WLAN & FIBER OPTICAL , Enhancing and operating on WIN 2003 SERVER , ISA SERVER 2006,MAIL EXCHANGE SERVER  Hardware and software maintenance.  MSSQL 2000, ORACAL 9i Servers Maintained and troubleshooting  Developed and enhance PAYROLL System – Developed in Microsoft Visual Studio 2005  Installation and support of systems, networking, devices, software and hardware equipment.  System support on technical and programming solutions. TECHNICALSKILLS  Php/ MySql, ,HTML, XML, JavaScript, jQuery  Open source Programs (Joomla, Zencart, Magento, Drupal,)  Microsoft Visual Studio 2005, 2008 ( VB.NET, C#.NET)  Microsoft MQL Server 2005, 2000  RPG/400, CL/400, COBOL/400, SQL/400  Oracle 9i  SAP/R3  Java  ASP

All stuff you can see here ... (github nickname rogvulf) C/C++ (STL, SFML,BOOST,Multithreading) Game development

I specialize in developing advanced mobile applications across iOS, Android, Flutter, and React Native platforms, with a focus on integrating cutting-edge AI technologies. My experience includes building intuitive, AI-driven apps that enhance user experiences and deliver personalized features. 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬: AI Integration: Implementing machine learning models for predictive analytics, personalization, and smarter user interactions. Cross-Platform Development: Proficient in Flutter and React Native to build efficient, high-performance apps for iOS and Android. iOS & Android App Development: Expertise in native app development using Swift, Kotlin, and Java, with a focus on AI-based functionalities. Cloud Services & Backend Integration: Utilizing platforms like Firebase, AWS, and Parse to seamlessly integrate AI-powered backend systems. Machine Learning: Integrating pre-trained AI models or developing custom solutions for mobile apps. Voice & Image Recognition: Leveraging AI tools such as OpenCV and TensorFlow for advanced image and voice processing capabilities. Natural Language Processing: Integrating chatbots and AI-driven communication systems for enhanced customer interaction. 𝐏𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐢𝐧 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐫𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐮𝐬𝐢𝐧𝐠 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞 𝐟𝐨𝐫 𝐛𝐚𝐜𝐤𝐞𝐧𝐝, 𝐚𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭. 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: AI-driven social networking apps AI-enhanced messaging apps On-Demand APPS Real Estate Solutions Online Learning Platforms CRM Software Development Custom Enterprise Solutions Payment Processing Solutions Social Media & Dating APPS Retail & E-Commerce APPS Voice assistant and chatbot integration HealthCare, Fitness & Finance Solutions Enterprise Portals & Identity Access Management E-commerce apps with personalized recommendations AR/VR integration using AI for improved user experiences My approach combines expert mobile app development with the integration of artificial intelligence to create powerful, user-centric solutions. Let’s collaborate to build smart, intuitive apps that transform user experiences with AI at their core.

I am a professional full-stack developer with a Specialist degree working since PHP 4 era. I write very stable and tested code for business-critical applications.

I am a Senior Node.js Developer and React.js Developer with 15+ years of experience building scalable SaaS, eCommerce, and marketplace platforms that are designed for performance, growth, and real business impact. As a Full Stack Developer, I specialize in building high-performance backend systems using Node.js, Express.js, and API-first architecture. I design and develop secure RESTful APIs, microservices, and scalable server logic for SaaS platforms, marketplaces, and subscription portals. As a Node.js Developer, I focus heavily on backend architecture, RESTful APIs, and scalable system design. My experience in API Development includes building secure authentication systems (JWT, OAuth), payment integrations, real-time systems, and microservices-based applications. I prioritize clean architecture, performance, and long-term maintainability in every backend system I build. With strong experience as a Backend Developer, I design optimized database structures (MongoDB, PostgreSQL, MySQL) and develop high-performance server-side applications using Node.js, Express.js, and NestJS. On the frontend, I work as a React.js Developer, building modern, responsive interfaces using React.js and Next.js that integrate seamlessly with Node.js APIs and backend services. Core Expertise: • Backend Development (Node.js, Express.js, NestJS) • API Development & Integration (REST, authentication, third-party APIs) • Database Design (MongoDB, PostgreSQL, MySQL) • Full Stack Development (React.js + Node.js) • Scalable Architecture & Microservices I specialize in: • SaaS application development • Custom API development • Full-stack web application development • Node.js backend systems • Scalable platform architecture Node.js Developer | Node.js Development | Backend Development | Server-side JavaScript | Express.js | REST API Development | API Integration | Custom Web Application Development | Scalable Web Applications | Full Stack Development | Backend Architecture | Microservices | Server-side JavaScript | Authentication (JWT / OAuth) | Payment Gateway Integration | Third-party API Integration Tech Stack: Node.js | Express.js | NestJS | React.js | Next.js | MongoDB | PostgreSQL | MySQL | AWS | Docker React + Node.js | MERN Stack Developer | Next.js + Node.js | JavaScript Full Stack Developer | API Development with Node.js If you're looking for a reliable Node.js Developer or React.js Developer who can take ownership of both backend and frontend systems, I’d be happy to discuss your project.

Hi, I'm Mohsin, an expert in Generative AI, Machine Learning, and Automation with strong proficiency in the MERN stack. I specialize in creating AI-driven solutions and full-stack web applications that automate tasks and enhance user experiences. Key Strengths: -GenAI & Machine Learning: Craft intelligent models for dynamic content and predictive insights. -Automation: Optimize workflows with AI-powered automation tools such as Make.com and Zapier -MERN Stack: Develop robust, scalable web apps from front-end to back-end. Why Me? With 5+ years of experience, I blend AI innovation with full-stack expertise to help you achieve your goals. Let's collaborate to turn your ideas into impactful solutions. -Mohsin

As a Top-Rated Shopify Plus Expert with $1M+ earned on Upwork, I help 6–8 figure brands build high-converting, scalable Shopify stores that drive sales and growth. With 15+ years of experience, I’ve successfully delivered 500+ Shopify projects, including: ✅ Custom Shopify & Shopify Plus theme development ✅ Full store setups, redesigns, and migrations ✅ Speed & conversion rate optimization ✅ Advanced app integrations & custom features ✅ Multi-store and international storefronts ✅ Custom Shopify App development ✅ Ongoing maintenance and CRO support I’ve worked with D2C brands, agencies, and entrepreneurs globally turning ideas into high-performing online stores. If you're looking for a reliable expert who understands brand, performance, and user experience, let's connect. ✨ Certified Shopify Partner 📈 Proven track record with real results 🕒 On-time delivery, clear communication 🔧 Tech stack: Liquid, HTML/CSS, JavaScript, JSON, API integrations Let’s build a Shopify store that sells.