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With 7+ years of extensive experience in full-stack development, I bring a strong mix of technical depth and practical execution to every project. I focus on building robust, scalable applications while ensuring a seamless user experience from backend to frontend. Expertise: 📱 Mobile App Development: Specialized in building high-performance apps using React Native and Expo 🌐 Frontend Development: Proficient in React and Next.js, delivering clean, responsive, and interactive interfaces 🔧 Backend Development: Experienced with Node.js, Express, NestJS, and PHP for scalable and maintainable APIs 💾 Database Management: Skilled in PostgreSQL, SQL Server, and MongoDB for efficient data modeling and performance ☁️ Cloud & Infrastructure: Hands-on experience with AWS, Firebase, and Azure for secure and reliable deployments AI-Enhanced Workflow: I leverage modern AI tools like Claude to significantly improve development speed and code quality: ⚡ AI-assisted coding to accelerate feature development 🔍 AI-powered PR reviews for cleaner, more maintainable code 🧠 Using AI as a “second engineer” for debugging, refactoring, and edge cases 🔁 Parallelizing tasks by delegating smaller, well-defined work to AI 🚀 Faster iteration cycles without compromising quality Why Work With Me? 💡 Technical Versatility: I choose the right tools and architecture based on your specific needs 🗣️ Clear Communication: Consistent updates and proactive collaboration throughout the project 🧩 Problem Solver: I focus on practical, efficient solutions that move your product forward If you’re looking for a developer who combines solid engineering fundamentals with modern AI-driven efficiency, I can help bring your vision to life faster and smarter.

Many founders and business owners know the problem they want to solve, but aren't sure which technology is the right fit. Should it be no-code? A low-code solution? A custom web application? The wrong decision can cost months of development time, thousands of dollars, and leave you with a system that's difficult to maintain or impossible to grow. That's where I help. For more than 25 years, I've worked with founders, startups, researchers, manufacturers, and service businesses to turn ideas, workflows, and operational challenges into working software systems. My longest client relationship spans more than 15 years—a level of trust that's earned by consistently helping businesses solve problems and adapt as their needs evolve. I don't believe in forcing every project into the same technology stack. Sometimes Bubble is the right choice. Sometimes a low-code solution makes more sense. Sometimes a custom application is the better long-term investment. My job is to help you choose the right approach and then execute it successfully. I help founders and business owners make better technical decisions and build software that solves real operational problems. Some projects need a developer who can execute a well-defined specification. Other projects need someone who can help shape the solution, navigate technical tradeoffs, and make informed recommendations along the way. If you're facing technical decisions and want an experienced partner to help you work through them, let's talk. What I typically help clients build: ✔️ MVPs and early-stage products ✔️ SaaS applications ✔️ Operational dashboards ✔️ Client portals ✔️ Internal business tools ✔️ Marketplace and booking platforms Recent examples include: • Helping an industrial equipment manufacturer evolve a standalone controller application into a larger operational software ecosystem used across multiple locations. • Helping a researcher bring an AI-supported educational platform into production so it could be tested and validated as part of a graduate thesis program. • Stabilizing and improving existing business systems where critical workflows, integrations, and user experiences had become blockers to growth. Why clients work with me: ✔️ 25+ years of software development experience ✔️ Top Rated Upwork freelancer ✔️ Published technical author ✔️ Long-term client relationships measured in years, not months ✔️ Experience helping clients evaluate, build, improve, and evolve software systems Technologies I regularly work with include: • Bubble IO • SvelteKit • Supabase • Firebase • AI-assisted development workflows Whether you're evaluating a new idea, improving an existing system, or trying to determine the best technical approach for your business, I'd be happy to discuss your goals and help you determine the best path forward.

💻 Full Stack Developer | MS Access, VBA, SQL Server, Excel, Azure, React, Firebase 🌟 Professional Summary With over 25 years of experience, I specialize in building and maintaining applications that help businesses operate more efficiently. My expertise ranges from legacy desktop systems to modern web and mobile solutions, always focused on solving real business problems through automation, scalability, and reliable support. 💡 How I Can Help ✔ Workflow Automation: Streamline operations using MS Access, Excel VBA, and SQL Server ✔ Legacy System Modernization: Upgrade VB6, VB.NET, and ASP applications to modern platforms ✔ Database & System Integration: Build and integrate ERP, CRM, and APIs for seamless workflows ✔ Web & Mobile Development: Develop responsive applications using React, Next.js, and Firebase ✔ Business Intelligence: Create dashboards and reports using Power BI for actionable insights ✔ Enterprise Tools Support: Enhance productivity using Azure, SharePoint, PowerApps, and Dataverse 💼 What I Do Best ✔ Microsoft Access Database Development (Forms, Queries, Reports) ✔ VBA Automation (eliminating repetitive manual work) ✔ Order Management & Inventory Systems ✔ Data Cleanup, Normalization, and Optimization ✔ SQL Server Integration & Backend Scaling ✔ Fixing slow or broken Access databases ✔ Workflow Automation for real-world business processes 🔥 Real Business Impact I don’t just build databases—I solve business problems. I’ve worked with clients for 4+ years on long-term engagements, helping them: Reduce manual data entry by up to 70% Improve order processing speed Eliminate duplicate and inconsistent data Maintain reliable and scalable systems ⭐ Client Feedback (5.0 Rating) “Roy has been great to work with in providing a monthly service for our company. He has worked with us on several projects over the last four years. He is very knowledgeable and responsive despite the time difference.” “Our company has worked with Roy for 4 years on various projects. He consistently understands requirements and delivers results as expected.” “Roy is easy to work with and highly skilled at solving application-related issues. He quickly understood my challenges and provided effective solutions.” “Roy is very responsive and easy to work with. He completes projects quickly and efficiently.” “I had the pleasure of working with Roy on an existing Access application. His expertise, patience, and clear communication exceeded my expectations. He explained complex concepts clearly and ensured the system worked exactly as needed.” 🚀 Proven Results ✅ Designed an accounting system used by 158+ active clients since 2006 ✅ Delivered mission-critical systems including POS, HRIS, payroll, hotel, and restaurant systems ✅ Developed AQUABIZ, a water refilling business app with real-time inventory and sales tracking 🧠 Why Clients Choose Me ✔ Specialized in Microsoft Access (not a generalist) ✔ Strong understanding of real business workflows ✔ Clear communication and dependable delivery ✔ Focus on long-term, scalable solutions ⚙️ Typical Projects I Handle Food / Retail Order Management Systems Inventory Tracking Systems CRM & Data Management Tools Reporting Dashboards Legacy Access System Optimization Access + Website / API Integration 💬 Let’s Work Together If your current system is: ❌ Slow ❌ Manual ❌ Error-prone ❌ Difficult to manage I can help you transform it into a fast, automated, and reliable system. Let’s discuss your project 👍

'The digital world inside our computers works in exact and with calculated ways', and that's the mindset I like to have whenever I do my work. I am a full-stack web developer who takes comfort from the repetitive part of programming and finds excitement from the endless learning in this field. I enjoy building projects, solving problems, and getting things done. I see solving bugs as satisfying and adjusting paddings and margins as relaxing. I mostly work with the MERN stack but I'm very eager to learn more technologies. I worked with ASP.Net MVC Front-End for a year.

I am a high agency developer, and have a CS degree. I'm always hungry to learn and grow. Here’s some of my work: Folderly (Co-Founder): $20K MRR, Took a school project to #1 in Productivity on the App Store. 1M+ downloads, 4.9-star average. Creatorly: Built the backend of an AI influencer management, tracking, and automations, and outreach platform, the system behind Folderly’s marketing success. PushTraining (Mobile Engineer) : $30K MRR, Worked part-time with the founder (former Google, Airbnb) to build the #1 treadmill running app fully dedicated to interval runs. FishVerify (Lead Mobile Developer): $40K MRR. The first fish app in the world before AI. Uses machine learning, tensor flow, AR Kit and now transitioning to the AI world. Winning Record: Won Apple’s Swift Student Challenge (2023) 4× consecutive national hackathon winner I won Apple’s Swift Student Challenge in 2023 without AI tools. Now I’m an AI-native developer, I use Claude Code (MCP, Claude Skills, commands, claude.md) to move faster and build better systems. Best, Lizter Angelo M. Abrau

I’m a Web Developer with 8+ years of experience building responsive, scalable, and maintainable websites and web applications using React, Next.js, Vue, Nuxt, and TypeScript. I’ve developed CMS-driven websites, e-commerce platforms, SaaS applications, and custom business tools using Sanity, Shopify, Node.js, Express, Storyblok, and BigCommerce. With a strong foundation in traditional software development, I now use an AI-assisted workflow with tools such as Claude Code, Codex, and Cursor to accelerate development while maintaining thoughtful design, intuitive user experiences, and clean, maintainable, production-ready code.