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Is your AI-powered MVP built on a fragile 'vibe-coded' foundation? Are you struggling to scale a prototype that was built with lightning speed but is now plagued by bugs, security holes, and technical debt? I transform brittle AI prototypes into robust, **production-ready applications**. As a senior AI engineer specializing in the **Node.js** and **React** ecosystem, I bridge the gap between rapid, AI-assisted development and the disciplined engineering required for scalable, secure software. But robust software is only half the battle. The other half is making it *work for your business*. I design and implement **intelligent automation workflows** that connect your apps, eliminate manual tasks, and free up your team to focus on high-impact work. Whether you need to rescue a failing project, automate a core business process, or build a scalable MVP from the ground up, I provide the expert oversight to ensure your AI initiatives deliver real, measurable value. **My Core Services:** * **🤖 AI Code Rescue & Remediation:** I conduct deep **AI code audits** to debug, refactor, and secure fragile codebases (especially those built with LangChain.js). I turn unmaintainable prototypes into stable, scalable assets ready for real users. * **⚙️ Intelligent Workflow Automation & Integration:** I design and build digital assembly lines for your business. I offer a full spectrum of automation solutions: * **Rapid Integration:** Using **Zapier, Make.com & n8n** to connect your existing tools and solve immediate process bottlenecks. * **Custom API Development:** Building custom **Node.js** APIs and webhooks to connect proprietary systems or handle complex logic that no-code tools can't. * **AI-Powered Decisions:** Infusing your workflows with intelligence using the **OpenAI API** to triage support tickets, qualify sales leads, or generate content automatically. * **🚀 Custom AI Solution Development:** I architect and build bespoke AI solutions from scratch, from **Custom GPTs** and intelligent **AI Agents** to complex RAG (Retrieval-Augmented Generation) pipelines that leverage your private data. * **👨🏫 AI Engineer & Career Mentorship:** I provide 1-on-1 coaching to help developers navigate the AI landscape, master tools like LangChain.js, and build a successful career in AI engineering and automation. **My Tech Stack:** * **Languages:** Node.js, TypeScript, JavaScript * **Frameworks:** React, Next.js, Express.js, NestJS * **AI / LLM:** LangChain.js, OpenAI API, LlamaIndex, Vector Databases (Pinecone, Qdrant) * **Automation Platforms:** Zapier, Make.com, n8n Ready to move past the prototype phase and build a real business? **Send me a message with your project details or book a session to get started.** --- ### Service Packages * **Package 1: AI Code Audit & Production-Ready Roadmap** * **Description:** Have an AI-generated MVP that feels unstable? I'll perform a comprehensive review of your codebase. You'll receive a detailed report identifying security vulnerabilities, performance bottlenecks, and a concrete, actionable roadmap to make your application **production-ready**. This is the perfect first step to de-risk your project. * **Package 2: Intelligent Automation Workflow** * **Description:** Let's put a core business process on autopilot. We'll map out a high-impact workflow and I'll build a robust automation to solve it. Ideal for **automating lead qualification**, **triaging customer support tickets**, or **streamlining content pipelines** using the best tool for the job—Zapier, Make, or custom Node.js scripts. * **Package 3: Scalable AI MVP Development** * **Description:** Need to build an MVP the *right* way? I'll architect and develop a **scalable MVP** from day one, using professional, spec-driven development practices. We'll build a strong foundation with clean, documented code and a modern stack (Node.js, React) to avoid the technical debt that plagues "vibe-coded" projects.
I'm Matei, a full-stack developer with over 10 years of experience, specializing in JavaScript, React, and Node.js. I help developers at all levels overcome challenges, from debugging complex issues to understanding core concepts. My approach is patient and tailored to your needs, ensuring you gain confidence and clarity in your coding journey. Format: - regular (long term) or one-time - for any level (beginner/intermediate/advanced) - personalized take-home tasks & resources - 45-90min sessions, up to 6hrs/day on request - first session of week: 60$/hr, after that 30$/hr Availability: - 4:00-18:00 UTC on workdays - irregular on weekends - last minute or late night sessions on request (email matei@copot.eu) Technologies: - JavaScript: ESNext, NodeJS/Deno, TypeScript, React, Vue, NodeMCU, & more - Front-end Web Dev: HTML5, CSS3, responsive design, PWAs, SPAs, & more - Back-end Web Dev: Express/NextJS APIs, Python, AWS, Docker, SQL, PHP, & more - App Dev: Mac/Linux & Android, Electron, Expo, Python, Stripe, UX, & more - others: always curious about other technologies, e.g. haskell, ruby, WASM, WebGL... = Why me? I'm typically paid €100/hr by top companies, so the lower rate here means you're getting top-tier expertise at an accessible price. I enjoy mentoring because it brings variety and a more collaborative and relaxed dynamic. I have a proven track record of guiding learners from zero experience to landing high-paying jobs. My teaching adapts to your pace and goals — you'll always get honest, actionable advice, including what’s realistic and what’s not. If you're serious about growing your skills or career in tech, I’d be glad to support your journey.
I am a Software Engineer with over 10 years of experience in full-stack development and technical leadership. I specialize in modern web technologies, including JavaScript, TypeScript, React, Node.js, and AWS. My expertise spans frontend frameworks (React, Next.js, Electron), backend architectures (Node.js, Flask), and databases (MySQL, PostgreSQL, MongoDB). I have led diverse projects, from HRIS systems to eVoting platforms, focusing on scalability, security, and system performance. Recently, I developed an AI-driven response evaluator app, enhancing NLP with the Natural library and refining machine learning models, strengthening my AI and model evaluation skills. I developed a social media automation dashboard enabling users to authenticate via Facebook Login, schedule posts, and track engagement analytics in real time. Integrated the Facebook Graph API for user authentication, post publishing, and insights retrieval, while managing webhook updates for page activity. With a collaborative leadership style grounded in values of Excellence, Passion, Integrity, and Commitment, I have led initiatives that increased revenue and improved institutional rankings, including overseeing the creation of over 15 educational applications at Yaba College of Technology. Cross-platform offline-first POS built with Electron (macOS/Windows) featuring secure role-based sessions, robust API sync (idempotent/outbox), high-performance UI (workers/virtualized lists), and production packaging (code-signed, auto-updates). Also, actively use Cursor, GitHub Copilot, and ChatGPT in my day‑to‑day work. * Cursor: I lean on repo-wide context to refactor legacy modules, generate test suites, run multi-file code mods, and rapidly scaffold React/Next.js features. I also use its inline “chat-on-selection” to explain unfamiliar code paths and to produce migration scripts (e.g., Prisma/PostgreSQL schema changes). * GitHub Copilot: Great for fast boilerplate (handlers, DTOs, Prisma models), unit tests, and typed hooks in TypeScript-heavy codebases. * ChatGPT: Architecture brainstorming, prompt engineering for LLM features (LangChain), complex regex, and translating requirements into clean DDD/Clean Architecture boundaries. * Facebook Graph API–powered automation app that enables users to log in, schedule posts, and track real-time engagement analytics using React, Node.js, and Supabase. This combo has materially reduced cycle time on projects like IntelliTest (AI-powered CBT) and my LangChain eCommerce chatbot, where I used AI tools to scaffold multi-turn LLM workflows, write evaluation chains, and iteratively harden the codebase. My goal is to leverage my technical and leadership skills to drive innovation and deliver transformative solutions aligned with business objectives.
Hello there, I've completed **30+ jobs** and about **82+ sessions** ranging from website and web app development with React, Next.js, Python programming, and Threejs, to Artificial Intelligence, Blockchain, and Cybersecurity. I work in an agile environment and communicate my thoughts and work. I've also maintained a 5.0 Star Review throughout my time at Codementor.
I am a Full-Stack Next.js Developer I have a strong interest in Vercel AI SDK, have been building web products for my own company and, as a freelancer, and want to continue growing helping others.
Full stack developer for web application using different stacks. I love helping people. If you need help with your work, fixing bugs, solving SQL query contact me.
Passionate web developer for over 15 years, I started my career building WordPress website for multiple clients, now working full time at TELUS on our Internal Developer Platform by day and building SaaS applications, primarily using Next.js & Supabase, by night. I am also active in the community, mentor (HTML 500, Ladies Learn Code or here).
Hello! I’m a front-end engineer with 8 years of experience working with multiple tech startups and teaching at two coding boot camps. I’m passionate about sharing my knowledge and helping you achieve your goals! Technologies I’m Endorsed For: 🌟 React 🌟 TypeScript 🌟 HTML & CSS 🌟 Jest How I Can Help: 🤔 Debugging your code and resolving tricky issues 🤔 Integrating APIs into React applications and displaying data seamlessly 🤔 Preparing for job interviews and landing your first (or next!) developer role Proven Results for My Students: ✅ Overcome Debugging Roadblocks: Students I’ve worked with gain the confidence to tackle challenging bugs, learning structured approaches to problem-solving that save hours of frustration. ✅ Develop Real-World Projects: I guide students to build polished, portfolio-worthy projects, helping them showcase their skills effectively. ✅ Understand React Like a Pro: Students frequently report breakthroughs in understanding React concepts like hooks, context, and state management after just one session. ✅ Write Clean, Maintainable Code: By emphasizing reusable components and testing, I help students produce code that’s not only functional but also maintainable and professional-grade.
🏆 **Top-Rated** | ✅ **100% Client Satisfaction** | 🔥 [**200K+ Subscribers on YouTube**](https://www.youtube.com/@heyflutter) 💼 **6+ Years in Software Development** | 📱 **25+ High-Quality Applications Developed** --- --- Hi there! I help startups, entrepreneurs, and growing businesses **build beautiful, high-performance applications**. Whether you’re launching an MVP or scaling a product, I bring the **technical expertise** and **design-first mindset** to deliver stunning user experiences—on time and on budget. --- --- ### **What I Can Do for You:** ✅ Cross-Platform App Development 👉 Web App Development 🚀 MVP Launch & Rapid Prototyping 🎨 UI/UX Design with Figma 📲 App Store & Play Store Deployment ⚡ Performance Optimization --- --- ### **About Me** I began my career building real-world solutions—customer management systems, e-commerce platforms, and on-demand service mobile apps. Over the past 6+ years, I’ve grown into a results-driven mobile app engineer, delivering seamless, high-performance applications that solve complex business problems and create lasting value for users worldwide. My passion for Development also led me to work with [**HeyFlutter.com**](https://www.youtube.com/@heyflutter), a YouTube channel where I taught app development using Flutter to a community of 200K+ developers.
Passionate frontend developer with a knack for integrating cutting-edge AI technologies into seamless user experiences. I've spent over six years crafting React and TypeScript applications that serve more than 100,000 users globally, and I've recently delved deep into AI-powered solutions.
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The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Supabase project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Supabase request on Codementor, check out our article.
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