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Hi! I am a full-stack web developer with 12 years of experience in development, ecommerce and team managment. 22 completed Upwork jobs, 100% job success | all 5-star reviews | 3,100+ hours My specialities are building SaaS and Ecommerce products I spent 5.5 years running web engineering at FaZe Clan, one of the world's biggest esports brands: managing the dev and QA teams, planning and delivering major launches year after year, and personally architecting their platform end-to-end - including a Shopify e-commerce operation that processed $1.6M in a single-day merch drop. I'm also Co-Founder & CTO of cloaq.ai, an AI photo-retouching SaaS, where I built the product from zero and run everything technical. Here are some of the tech stacks I use: - Back-end: Node.js, Laravel, PHP, CodeIgniter, REST - Front-ent: vue.js, three.js, javascript, jQuery, HTML, CSS, Bootstrap, Tailwind - Ecommerce: Shopify, Wordpress - Cloud & DevOps: AWS. Cloudflare, Vercel, Git - Data and integrations: MySQL, MongoDB, Google APIs, Stripe... - AI: AI models integration, AI-assisted development workflow I'm especially drawn to products that improve people's lives — health, wellbeing, education, quality of life — though I bring the same standard of work to every project. Tell me what you're building — and where it's stuck. I'll tell you how I'd get it shipped.

🙌 7+ Years of experience in full-stack web development 🏆 Top Rated Plus on Upwork | 100% Job Success Score | 7+ Years building for founders Hi, I'm Gabriel. For the past 7 years I've helped founders and teams turn ideas into real, working software, from MVPs that get to market fast to full SaaS platforms built to scale. These days, my focus is on full-stack development, AI integration, and SaaS. A lot of founders find me after a previous developer already burned through their time and budget and left them with nothing, almost always because of poor communication and the wrong expectations. With me, it's no micromanagement and complete transparency. You'll always know where things stand, what's done, what's next, and what's blocking. That's how I've helped dozens of founders launch their ideas and grow them. You can check out my case studies below to see for yourself, or read what some of my clients have said: Ben Furtado | Founder of Moonlitemoney - ⭐⭐⭐⭐⭐ "Gabriel is awesome. I was struggling to find the right developer to knock out my software MVP. I tried a lot of people who were over complicating the project and taking forever. Gabe came in and rebuilt the whole ring from scratch and did it 10x better in 1/10th the time. He understands the vision and knows how to bring it to life. I really can’t recommend him highly enough. Thank you Gabe!" Seth Carstens | Web Development Lead Nextiva - ⭐⭐⭐⭐⭐ "Gabriel was a valuable member of our web development team. He always delivered high-quality work and was willing to go above and beyond with extra hours on the nights and weekends to get the project across the finish line." Cristian Sava | CEO at Compire LLC - ⭐⭐⭐⭐⭐ "Gabriel is an exceptional engineer, truly one of the best I've worked with. His expertise and willingness to go above and beyond ensure top-notch delivery on every project. Beyond his technical skills, Gabriel stands out for his excellent communication, a rare find on Upwork. He's also highly reliable; I can trust him to complete any assigned task on time and with outstanding quality." I love working with ambitious founders and teams who want their website to stand out and perform. If that sounds like you, let’s connect.

I fix urgent production issues for Cloudflare, AWS/Linux servers, WordPress, and Magento sites: downtime, 500/502 errors, DNS/SSL failures, Cloudflare misconfigurations, hacked WordPress sites, Magento performance issues, failed migrations, server overload, bot attacks, and NGINX problems. I start with a capped diagnostic so you know the root cause quickly and avoid open-ended cost. Most clients come to me when production is already in trouble: AWS issues, slow servers, broken DNS/SSL, overloaded NGINX/PHP/MySQL, failed migrations, Cloudflare misconfiguration, Shopify bot abuse, ecommerce abuse, WordPress/Laravel/Magento performance issues, or active attacks. Top Rated Plus, 100% Job Success, $700K+ earned, 278 Upwork jobs, and 11,700+ hours. ▸ AWS & DEVOPS INFRASTRUCTURE AWS architecture, EC2, VPC, CloudFront, RDS, ECS/Docker, VPN, Linux, NGINX, DNS, SSL, migrations, monitoring, patching, cost/performance troubleshooting, and system administration. ▸ INFRASTRUCTURE SECURITY & HARDENING Linux hardening, AWS security groups, origin protection, access control, SSL/TLS, DNS safety, cPanel/Plesk/WHM cleanup, malware cleanup, patching, incident response, and production risk reduction. ▸ CLOUDFLARE SECURITY, WORKERS & TRAFFIC ABUSE DEFENSE Cloudflare WAF, DDoS mitigation, bot protection, rate limiting, and Workers development for edge proxying, request filtering, redirects, header/cookie logic, API protection, custom traffic handling, scraping, carding, fake signup, login/cart/checkout abuse, and origin protection. ▸ AI-ERA PRODUCTION SECURITY Protecting AWS/Linux, Cloudflare, APIs, ecommerce, and SaaS systems from automated abuse, bots, scraping, fake signups, login abuse, API abuse, and AI-assisted attacks. ▸ ECOMMERCE, WORDPRESS, LARAVEL, MAGENTO & SAAS PROTECTION Shopify, WooCommerce, WordPress, Laravel, Magento/OpenMage, SaaS apps, PHPBB checkout abuse, fake accounts, API abuse, malware cleanup, uptime protection, migrations, hardening, and performance fixes.

$𝟏𝐌 𝐄𝐚𝐫𝐧𝐢𝐧𝐠𝐬 | 𝟏𝟔𝐤+ 𝐇𝐨𝐮𝐫𝐬 𝐖𝐨𝐫𝐤𝐞𝐝 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 | 𝐄𝐱𝐩𝐞𝐫𝐭 𝐕𝐞𝐭𝐭𝐞𝐝 🏅 Senior Full Stack Developer and AI Engineer with 15 years of experience building scalable web platforms, SaaS products, enterprise applications, and MVPs. As a Full Stack Developer, I take ownership of the entire product lifecycle—from discovery and architecture to deployment and long-term scaling. By combining modern AI-powered workflows with deep engineering expertise, I help businesses launch faster, reduce development costs, and build products that are ready to grow. As a Full Stack Developer, I leverage AI-powered tools including Cursor, GitHub Copilot... to accelerate development without compromising code quality. My experience as an AI Engineer allows me to integrate intelligent features, automate workflows, and build AI-driven products that create real business value. Whether you're building an MVP or scaling an existing platform, you can expect a Full Stack Developer who focuses on business outcomes first. I build maintainable architectures, deliver clean code, and ensure every technical decision supports your long-term product strategy. My work with React, Node.js, and Next.js enables me to create high-performance applications that are fast, secure, and scalable. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐢𝐧: 💰 FinTech & Banking Platforms 📊 SaaS & Dashboards 🤖 AI Applications 🩺 Healthcare & MedTech 🏡 Real Estate Platforms 🏢 Corporate Websites 🛒 E-commerce ✈️ Travel & Logistics 🧘 Wellbeing & Fitness Apps ❤️ Social Apps & Dating Apps ⚙️ Management Systems 💎 Luxury Membership Platforms 🚸 Children's Applications 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: 🤖 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 𝐀𝐬 𝐚𝐧 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫, 𝐈 𝐛𝐮𝐢𝐥𝐝 𝐢𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐮𝐬𝐢𝐧𝐠 • OpenAI API • GitHub Copilot • Cursor • Lovable.dev • AI automation and workflow integrations • AI integrations ⚛️ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 As a Full Stack Developer, I specialize in modern frontend technologies including: • React • React ecosystem • React Query • React Router • Next.js • Next.js App Router • Next.js Server Components • TypeScript • Tailwind CSS • HTML5 • CSS3 • JavaScript 🔗 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 My backend expertise includes: • Node.js • Node.js APIs • Node.js microservices • NestJS • Express • Firebase 📱𝐍𝐚𝐭𝐢𝐯𝐞 & 𝐂𝐫𝐨𝐬𝐬-𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • Flutter • React Native • Swift • SwiftUI • Kotlin ☁️ 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 • AWS • Docker • Kubernetes • Terraform • CloudFormation • PostgreSQL • MySQL • MongoDB • Supabase • Firebase • Vercel • GitLab CI/CD 🎨 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐃𝐞𝐬𝐢𝐠𝐧 • Figma 🚀 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞 You work directly with one experienced Full Stack Developer instead of coordinating multiple specialists. As both a Full Stack Developer and AI Engineer, I bridge product strategy, frontend, backend, infrastructure, and AI implementation under one roof. My expertise in React enables me to build modern, responsive user interfaces that users love. My experience with Node.js allows me to create reliable APIs and scalable backend services. Using Next.js, I deliver SEO-friendly, high-performance applications optimized for speed and growth. Clients choose me because I combine the technical depth of a Full Stack Developer with the innovation of an AI Engineer. Whether it's a SaaS platform, enterprise application, AI-powered product, or startup MVP, I use React, Node.js, and Next.js to deliver solutions that scale. 📈 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐄𝐱𝐩𝐞𝐜𝐭 • Complete ownership from idea to production • Fast MVP development using AI-assisted workflows • Scalable architecture built with React, Node.js, and Next.js • Clean, maintainable code • Transparent communication • 100% IP ownership upon delivery • Fluent English • Seamless collaboration via Slack, Jira, GitHub, and Notion If you're looking for a Full Stack Developer who can also act as an AI Engineer, delivering modern products powered by React, Node.js, and Next.js, I'm ready to help you build software that moves your business forward. 📞 Let’s catch up right NOW and focus on what matters for your first release 📞 Ivan Kovač ___________________________________________________ Discover me by: #FullStackDeveloper #FullStackExpert #FullStackSpecialist #BackendDeveloper #FrontendDeveloper #React.js #Node.js #Next.js #SeniorDeveloper #WebDevelopment #MobileDevelopment #Flutter #Kotlin #Swift #iOSDeveloper #AndroidDeveloper #API #Enterprise #SaaSDeveloper #AdminDashboard #WebSecurity #AWS #Azure #GoogleCloudPlatform #UX/UIDesign #ProductDesign #LLM #AIAgents #GitHub #Co-Pilot #ChatGPT #Cursor #WindSurf #ClaudeSonet #AIEngineer #SaaSPlatform #AI-First Full Stack Developer # AI-Powered Full Stack Developer

Most WordPress sites underperform. Not because of bad design, but because of how they're built. Page builders, plugin stacks, and rushed architecture create sites that look fine on launch day and fall apart six months later. I've spent 12+ years doing it differently. I've worked with brands like Rosetta Stone, Napster, and Marriott, handling everything from full theme builds to complex ACF field architectures and performance overhauls. My approach is ACF-first, builder-free, and built for the long run. Every project starts with a clean foundation: custom Gutenberg blocks, semantic markup, and a codebase your team can actually maintain. No Elementor. No Divi. No shortcuts that cost you later. What I bring to your project: ⚡ 90-95+ PageSpeed scores across mobile and desktop 🎯 Pixel-perfect Figma-to-WordPress implementation 🧩 Custom Gutenberg blocks editors love using 🔒 Minimal dependencies, maximum stability My stack: ACF Pro · Custom Gutenberg · SCSS · Vanilla JS · PHP · REST API integrations If you have a Figma file and need it built the right way, or if your current site is slow and you're not sure why, I'm happy to take a look and give you an honest assessment.

I am a Software Developer with a Bachelor's degree in Business Informatics from the Faculty of Organization and Informatics, University of Zagreb. My primary focus is backend and application development for web, mobile, and software platforms. I have experience building applications using technologies such as Node.js, TypeScript, C#, .NET, Kotlin, SQL databases, and REST APIs. I develop web applications, backend systems, mobile applications, and software tools while focusing on clean architecture, maintainable code, and reliable application logic. My development background allows me to understand both the technical implementation and the user experience side of software products. In addition to development, I also provide manual QA testing and usability validation for web and mobile applications. Because of my technical background, I approach testing from a developer’s perspective and can identify not only visible UI bugs but also potential logic issues, backend problems, or API-related errors. My QA work includes: • Mobile app testing (Android / iOS) • Web application testing • AI conversational system testing • Functional and usability testing • Writing detailed bug reports with reproduction steps • Verifying bug fixes and validating application flows I regularly collaborate with development teams and create structured issues using tools such as GitHub Issues, Jira, Trello, Notion, and Slack. I am familiar with modern development workflows including GitFlow methodology, which allows me to communicate issues clearly and efficiently with engineers. Technical stack: • Node.js / Express • C# / .NET • Kotlin (Android development) • SQL databases • NoSQL databases (MongoDB) – schema design, querying and integration with backend APIs • REST APIs • Git / GitHub Alongside development and QA work, I am also open to smaller or quick tasks such as bug verification, app testing, usability testing, and technical support tasks. I am reliable, detail-oriented, and focused on delivering accurate and high-quality results. If you need a developer who understands both software development and quality assurance, I would be happy to help.