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Enterprise .NET Engineer | Blazor, REST APIs, MSSQL, Dapper, Clean Architecture, CQRS I am an Enterprise .NET Engineer with 4+ years of experience designing, developing, and maintaining high-performance, scalable web applications using the Microsoft technology stack. I specialize in ASP DOT NET Core, Blazor, REST API architecture, MSSQL Server, Dapper, Clean Architecture, and the CQRS pattern—delivering robust, maintainable enterprise solutions. I help organizations build modern systems with clean code, optimized database structures, and secure, predictable features. Whether you need a complete application built from scratch or improvements to an existing system, I provide dependable engineering with strong attention to detail. Stored Procedure–Driven Architecture for Faster Deployment & Easier Support I design applications that utilize well-structured MSSQL stored procedures to reduce deployment effort and simplify ongoing support. By placing key business logic in the database layer, most updates can be applied without redeploying the entire application—minimizing downtime and reducing support overhead. Benefits include: Faster updates and shorter deployment cycles Quicker issue resolution through targeted database-level fixes Higher performance via optimized queries Cleaner and easier-to-maintain application code Fewer production headaches for teams and clients Core Expertise ASP DOT NET Core Web Apps (MVC, Razor Pages, Web API) Blazor Server & Blazor WebAssembly Clean Architecture & CQRS pattern MSSQL Server design, tuning, and stored procedures High-performance data access with Dapper ORM Authentication & Authorization (JWT, Identity) Enterprise-grade REST API design and integrations Application optimization, debugging, and modernization What You Can Expect Clear communication and accurate requirement analysis Clean, maintainable, well-documented code Scalable architecture suitable for long-term growth On-time delivery with proactive updates Post-deployment support and continuous improvements I am available for both long-term contract roles and project-based engagements. If you need a reliable .NET engineer who can deliver secure, high-quality software aligned with enterprise standards, I would be glad to collaborate.

Hi, I'm Opi, a Top-Rated Full Stack Developer with 6+ years of experience building custom web applications, SaaS platforms, AI-powered software, enterprise systems, and production-ready MVPs for startups, SMEs, and growing businesses. I help founders and companies transform ideas into secure, scalable, and maintainable software. Whether you need a new SaaS platform, an AI-powered application, an enterprise business system, or a custom web application, I can take your project from planning and architecture to deployment and long-term support. Services - Full Stack Development - Custom Software Development - Web Application Development - SaaS Application & MVP Development - AI Application Development - Enterprise Software Development - CRM, ERP, HRM & POS Systems - Warehouse Management Systems (WMS) - Admin Dashboards & Customer Portals - REST API Development & Third-Party Integrations - Payment Gateway Integration - Cloud Deployment & DevOps Tech Stack Frontend: React.js, Next.js, TypeScript, JavaScript, Tailwind CSS Backend: Node.js, Express.js, NestJS, Laravel, PHP, Python, FastAPI Database & Cloud: PostgreSQL, MySQL, MongoDB, Supabase, AWS, Docker, DigitalOcean, GitHub Actions (CI/CD) Why Work With Me - Top-Rated Freelancer on Upwork - 100% Job Success Score - 50+ Custom Software Products Delivered - Experience building AI, SaaS, ERP, CRM, WMS, HRM, and enterprise platforms - Clean, scalable, and maintainable code - Secure authentication, role-based access, and API-first architecture - Fast communication and transparent project management - 6 Months Free Maintenance After Delivery Whether you're looking for a Full Stack Developer, Web Application Developer, AI Developer, SaaS Developer, Enterprise Software Developer, or a Custom Software Engineer, I'm ready to help build software that's reliable, scalable, and designed for long-term success. Let's build something great together. Keywords: Full-Stack Developer, Full Stack Software Engineer, Custom Software Developer, Web Application Developer, SaaS Developer, SaaS MVP Developer, AI Developer, AI Engineer, AI SaaS Developer, Enterprise Software Developer, OpenAI API, ChatGPT Developer, GPT-4o, Claude AI, Gemini AI, AI Agent Developer, LLM Developer, RAG, LangChain, LangGraph, MCP, Vector Database, AI Automation, AI Integration, Prompt Engineering, React.js, Next.js, TypeScript, JavaScript, Tailwind CSS, Material UI, Bootstrap, React Native, Flutter, Node.js, NestJS, Laravel, PHP, Python, FastAPI, REST API, API Integration, PostgreSQL, MySQL, MongoDB, Supabase, AWS, Docker, DevOps, CRM Development, ERP Development, HRM Development, POS Development, Warehouse Management System (WMS), Inventory Management System, Marketplace Development, Multi-Tenant SaaS, Subscription Platform, Payment Gateway Integration, Admin Dashboard, Customer Portal, n8n, Zapier, Microsoft Power Automate, Healthcare, Telemedicine, Fintech, Logistics, Supply Chain, Education, LMS, Video Streaming, E-commerce.

Top-Rated Plus Full Stack Developer specializing in PHP, Laravel, Vue.js, and Nuxt.js I build and maintain production web applications for businesses that need reliable backend architecture, modern frontend experiences, and clean, maintainable code. With 1,200+ hours of Upwork experience and projects across SaaS, ERP, fintech, ecommerce, booking systems, dashboards, APIs, and custom business applications, I can take a project from requirements and technical planning through development, integration, deployment, optimization, and ongoing maintenance. My Core Stack • PHP & Laravel • Vue.js & Nuxt.js • JavaScript & TypeScript • MySQL & Database Design • REST APIs & Third-Party Integrations • Tailwind CSS, Bootstrap & Responsive UI • Git, GitHub & CI/CD What I Can Build or Improve • Laravel / PHP web applications • SaaS platforms and MVPs • Vue.js / Nuxt.js applications and SPAs • ERP, CRM and business management systems • Ecommerce and marketplace platforms • Booking and reservation systems • Payment, subscription and billing workflows • REST APIs and API-driven applications • Admin panels, dashboards and internal tools • Third-party API, webhook, and payment integrations • Legacy PHP/Laravel applications and modernization • Performance optimization and scalability improvements Application Architecture & Engineering Beyond feature development, I bring strong application architecture and system design experience. I can help with database architecture, API design, authentication and authorization, queues and background jobs, caching, modular application structure, integrations, security considerations, and production performance. I work comfortably with both new products and existing codebases. For a new application, I can translate business requirements into a practical technical architecture and development plan. For an existing application, I can understand the current codebase, identify technical issues, implement new features, refactor where necessary, and improve reliability without unnecessary rewrites. Deployment & Production I can also handle the technical work required to get applications running reliably in production, including: • VPS and Linux server setup and management • Domain, DNS, SSL and HTTPS configuration • Nginx / Apache configuration • Laravel production deployment and server configuration • GitHub Actions and CI/CD pipelines • Laravel queues, workers, Supervisor and cron jobs • Database and environment configuration • Server migration and application deployment • Production troubleshooting and maintenance This allows me to work beyond writing application code and take ownership of the complete path from development to production. AI Integration I also work with AI integrations when they provide meaningful business value, including LLM APIs, AI assistants, document processing, intelligent workflows, and AI-powered application features. Why Clients Work With Me • Strong PHP/Laravel backend expertise • Professional Vue.js/Nuxt.js frontend development • Business-focused approach to complex workflows • Clean architecture and maintainable code • Experience with APIs, payments and third-party integrations • Ability to handle deployment and production infrastructure • Comfortable taking ownership of an application or working as part of an existing engineering team • Fast communication and practical problem-solving If you need a developer who can understand the business requirements, design the technical solution, build the application, deploy it, and keep it running reliably—not just implement isolated features—I can help. Let's discuss your project, existing application, or technical challenge and determine the most practical way forward. Keywords: full stack developer | full stack developer php | Full-Stack Development | Back-End Development | API Development | Full stack web developer | Senior full stack developer | ful stack developer | fullstack web developer | web application developer | custom PHP | saas Developer | Laravel developer | php laravel developer | Full stack laravel developer | Laravel full stack developer | Laravel developers | Senior php developer | php full stack developer | Vue developer | Laravel vue | Nuxt developer | Fintech app | Web application development | Web app enhancement | Web application enhancement | Codeigniter developer | Custom code | Full stack development skills

🟢 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 🏆 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗮𝗮𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 🌟 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗡𝗲𝘀𝘁𝗝𝗦 & 𝗡𝗼𝗱𝗲.𝗷𝘀 🏆 𝗥𝗲𝗮𝗰𝘁 & 𝗡𝗲𝘅𝘁.𝗷𝘀 🌟 𝗦𝗮𝗮𝗦 & 𝗠𝗩𝗣 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 🏆 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 & 𝗖𝗼𝗺𝗽𝗹𝗲𝘅 𝗔𝗣𝗜𝘀. ⭐ The job isn't complete until my client is satisfied! I work hard to earn the best feedback from my clients. If you are looking for a reliable software developer who values quality, communication, and long-term success, feel free to review my profile and reach out. I am a Full Stack SaaS Developer with 5+ years of experience building secure, scalable SaaS products and web applications. As a Full Stack SaaS Developer, I turn ideas into high-performance web applications built for real business workflows. My experience as a Full Stack SaaS Developer ensures you get clean, maintainable systems designed for long-term growth. For robust backend systems, my core strength as a Laravel, Node.js, NestJS developer ensures unmatched stability and speed. I use Laravel, Node.js, NestJS alongside PHP and Express.js to engineer fast microservices and RESTful APIs. This strong combination of Laravel, Node.js, NestJS prevents technical debt and keeps core database architectures optimized. On the Frontend, I leverage React/Next to build fast, highly interactive & responsive user interfaces. Using React/Next (React.js, TypeScript), I focus on hybrid rendering, clean state management, and asset optimization. A solid implementation of React/Next ensures pixel-perfect frontends & outstanding user experiences across all devices. My technical stack also includes hands-on experience with MySQL, PostgreSQL, MongoDB, Redis, AWS, Azure, and Docker infrastructure. I also specialize in AI Integration to automate workflows & enhance user experiences. My focus is on practical AI Integration that delivers real business value. Through custom AI Integration, I smoothly bring your MVP or SaaS platform into production. ✔️ Over 5 years of experience ✔️ Clean communication & high-quality, on-time delivery ✔️ Built 40+ web applications & SaaS products since 2020 🎯 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗕𝗨𝗜𝗟𝗗 ✅ SaaS Platforms & Multi-Tenant Applications ✅ Startup MVP Development ✅ Custom Web Applications ✅ Backend Development & System Architecture ✅ RESTful API Development & Integrations ✅ Microservices Architecture ✅ Cloud-Based Applications ⚙️ 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 📌 𝙁𝙧𝙤𝙣𝙩𝙚𝙣𝙙 ✔️ React.js ✔️ Next.js ✔️ JavaScript ✔️ TypeScript ✔️ HTML5 ✔️ CSS3 ✔️ Tailwind CSS 📌 𝘽𝙖𝙘𝙠𝙚𝙣𝙙 ✔️ PHP ✔️ Laravel ✔️ Node.js ✔️ Express.js ✔️ NestJS 📌 𝘿𝙖𝙩𝙖𝙗𝙖𝙨𝙚𝙨 ✔️ MySQL ✔️ PostgreSQL ✔️ MongoDB ✔️ Redis 📌 𝘾𝙡𝙤𝙪𝙙 & 𝙄𝙣𝙛𝙧𝙪𝙘𝙩𝙪𝙧𝙚 ✔️ AWS ✔️ Azure ✔️ Linux VPS ✔️ Docker ✔️ CI/CD 📌 𝙈𝙤𝙙𝙚𝙧𝙣 𝙏𝙤𝙤𝙡𝙨 ✔️ Supabase ✔️ Lovable.dev ✔️ Git ✔️ GitHub ✔️ Bitbucket 💼 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘 ✔ Strong backend expertise ✔ Full-stack ownership from planning to deployment ✔ Clean, maintainable, and scalable code ✔ Performance-focused development ✔ Clear communication and transparency ✔ Long-term product mindset ✔ Reliable delivery and support As a Full Stack SaaS Developer, I understand that successful software is more than code. It should solve business problems, improve operations, and create a great experience for users. 🚀 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘 As a Full Stack SaaS Developer, I have worked on: ✅ SaaS Platforms ✅ POS Systems ✅ Subscription Management Systems ✅ Dropshipping Platforms ✅ Internal Business Tools ✅ CRM Applications ✅ Workflow Automation Systems ✅ API-Driven Platforms ✅ Multi-Tenant Applications ✅ Microservice-Based Solutions My experience as a Full Stack SaaS Developer allows me to work across the entire software lifecycle, from requirements gathering and architecture design to development, deployment, optimization, and scaling. 📈 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗖𝗔𝗡 𝗘𝗫𝗣𝗘𝗖𝗧 When you hire me as your Full Stack SaaS Developer, you get: ✔ Reliable communication ✔ Clean and scalable architecture ✔ Professional development practices ✔ Fast issue resolution ✔ Production-ready software ✔ Long-term technical partnership If you need a reliable Full Stack SaaS Developer to build SaaS products, scalable web apps, backend architectures, or complex API integrations, let's discuss your project. As a Full Stack SaaS Developer, I focus on delivering stable software that scales seamlessly as your business grows. Combining my expertise in Laravel, Node.js, NestJS backends, responsive React/Next frontends, and smart AI Integration, I take full technical ownership of your lifecycle. Let's bring your vision to life! Full Stack SaaS Developer | Full Stack Developer | SaaS Developer | Laravel Developer | Node.js Developer | NestJS Developer | React Developer | Next.js Developer | Backend Developer | Web Application Developer | AI Integration | REST API Development | Microservices| Custom Software Developer | SaaS Platform Developer | MVP Development | React.js Developer