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Most software projects don’t fail because of missing features. They fail because of poor structure, slow performance, and code that becomes hard to maintain over time. 👋 Hello, I’m Yohanis, a Full Stack Engineer. I build and maintain web applications using React, Node.js, databases and cloud deployment. I focus on writing clean, scalable, and maintainable code that can grow with the product. Before I start coding, I try to understand what is actually causing the problem so the solution is correct, not just quick. What I can help you with: ✔ Fix slow, broken, or unstable applications ✔ Improve and refactor existing codebases ✔ Build backend systems and REST APIs ✔ Debug production issues and performance problems ✔ Develop full-stack applications from scratch to deployment How I work: ✔ Understand the real issue before building anything ✔ Keep architecture simple and scalable ✔ Write clean and maintainable code ✔ Communicate clearly and deliver on time I have worked on fintech systems, service platforms, and custom web applications where stability and performance matter. If you need someone who focuses on building reliable systems, feel free to reach out.

🚀 Passionate MERN Stack Developer | Transforming Ideas into Reality! Looking for a developer who can bring your vision to life? I’m a Full Stack Developer specializing in the MERN stack and React. I craft dynamic, user-friendly web applications that turn innovative ideas into functional, responsive digital experiences. 💼 What I Offer: MERN Expertise: Proficient in MongoDB, Express, React, and Node.js. Frontend Mastery: Engaging UIs with React.js. Backend Solutions: Seamless integrations with Node.js and Express. Database Efficiency: Speedy data management with MongoDB and MySQL. 🌟 Why Choose Me? Clear communication On-time delivery Dedicated to client satisfaction Let’s bring your project to life! Reach out and let’s build something extraordinary together. 🚀

AI Full-Stack Next.js & Node.js Developer | SaaS & MVP Specialist I help startups and businesses turn ideas into fast, scalable web applications and SaaS platforms using Next.js and Node.js. From MVPs to production systems, I focus on building clean, reliable software that actually works in real-world environments. I’ve worked on multiple business platforms, SaaS systems, and production web applications, including dashboards, e-commerce platforms, and API-driven systems. My focus is always on performance, maintainability, and delivering something clients can grow and scale without constant fixes. What I usually help clients with Building SaaS platforms from idea to production Next.js dashboards, admin panels, and business web apps Secure backend APIs with Node.js and FastAPI AI integrations using OpenAI and automation tools Fixing and optimizing existing applications API integrations and system improvements AI & Automation OpenAI API integrations and AI features Replit / Lovable / v0 app debugging and development AI-powered workflows and SaaS features Automation tools and backend integrations Tech Stack Next.js,SvelteKit, React, Tailwind, Shadcn Node.JS,NestJS, Express, FastAPI PostgreSQL,MySQL, MongoDB, Supabase, Convex,Firebase Stripe,Polar, NextAuth, BetterAuth, JWT OpenAI API, REST APIs GitHub, GitLab, Slack, Trello, Zoom

Let's Build Your AI-Powered Dream Product. I'm an AI Integration Specialist and Fullstack Web Developer with 5+ years of experience turning client ideas into impactful, intelligent products worldwide. My expertise lies in: 🚀 Integrating Advanced AI: Leveraging Langchain/LangGraph, Vercel AI SDK, and custom AI agents to build sophisticated, automated, and personalized web experiences. 💡 Modern Fullstack Development: Crafting robust and scalable applications with Svelte 5, TypeScript, Node.js, and a comprehensive modern tech stack. 🧩 Complex Problem-Solving: Tackling challenging technical hurdles, whether building from scratch or enhancing existing systems with AI. 🗣️ Clear Communication: Ensuring we're always aligned on your vision through effective collaboration and well-written documentation. I co-founded Kelal Tech PLC, an agency designing and developing cutting-edge web and mobile apps, increasingly with a focus on intelligent features. Ready to infuse your project with the power of AI? Let's connect and build something amazing. Technologies: ✅ AI & MACHINE LEARNING INTEGRATION: * Langchain, LangGraph * Vercel AI SDK * LLM APIs (OpenAI, Anthropic, Gemini, etc.) * Agent Development (Autonomous Agents, Conversational AI) * Model-Controller-Prompt (MCP) Architectures * Retrieval Augmented Generation (RAG) * Vector Databases (integration with Postgres, Elasticsearch, specialized DBs) * Prompt Engineering ✅ FRONT-END: Svelte, SvelteKit, Storybook, React, Next.js, Remix, Gatsby, HTML, CSS, SASS, Tailwind, styled-components, TypeScript, JavaScript, GraphQL, Urql, Apollo Client, RESTful ✅ BACK-END: Node.js, Fastify, Express, Koa, Mongoose, Objection.js, Knex, Sequelize, TypeScript, JavaScript, GraphQL, Apollo Server, RESTful APIs, Stripe, Bull queuing, Golang, GORM ✅ DATABASE: Postgres (incl. pgvector), MongoDB, MySQL, RocksDB, SQLite, Redis, Elasticsearch engine (incl. vector search) ✅ JAM STACK AND HEADLESS CMS: Prismic, Strapi, NetlifyCMS, DatoCMS ✅ HOSTING / CLOUD PLATFORMS: AWS, Vercel (incl. AI infrastructure), Cloudflare, Digital Ocean, Heroku, Netlify, Firebase, GCP, Azure ✅ UI/UX DESIGN: Figma, Adobe XD ✅ MOBILE: React Native, Progressive Web Apps (PWA), Flutter ✅ TOOLS: VSCode, GitHub, GitLab, Jira, Trello, Microsoft To-Do, Teams, Meet, Zoom, Loom...

🏆 Top Rated Plus | Top 3% of Talent on Upwork ☯ Long-term Client Relationships ✅ 100% Job Success Score 💼 5+ Years of Professional Experience I'm a Full Stack Developer and IT Support Specialist with experience building scalable web applications, troubleshooting complex technical issues, managing cloud infrastructure, and supporting end users in fast-paced environments. My background combines software development, system administration, technical support, and DevOps, allowing me to deliver complete solutions, from designing and developing applications to maintaining infrastructure and providing ongoing technical support. Areas of Expertise: ✅ Frontend Development: HTML5, CSS3, JavaScript, TypeScript, React.js, Next.js, Vue.js, Angular, Tailwind CSS, Material UI, Sass, Chakra UI, API Integrations ✅ Backend Development: Node.js (NestJS, ExpressJS), Python (Django, Flask), Golang, ASP.NET, Firebase ✅ Database Management: PostgreSQL, MySQL, SQL Server, MongoDB ✅ DevOps & Cloud: AWS, Docker, Kubernetes, Jenkins, GitHub Actions, CI/CD Pipelines ✅ IT Support & Systems Administration: • Technical troubleshooting and issue resolution • Windows, macOS, and Linux administration • User account management and access control • Network troubleshooting and connectivity support • Hardware and software deployment • Help Desk and Tier 1/Tier 2 Support • Microsoft 365 and Google Workspace administration • Remote desktop support and ticket management systems ✅ UI/UX: Figma, Wireframing, User-Centered Design Why Work With Me? ⭐ Able to work independently with minimal supervision ⭐ Strong problem-solving and troubleshooting mindset ⭐ Clear communication and fast response times ⭐ Client-focused and detail-oriented approach ⭐ Reliable delivery under tight deadlines ⭐ Experience supporting both technical and non-technical users ⭐ Committed to long-term partnerships and client success Whether you need a modern web application, infrastructure support, system administration, technical troubleshooting, or a combination of development and IT services, I can help deliver reliable, scalable, and efficient solutions.

Full-Stack Developer | AI & Cloud Specialist I am a Full-Stack Developer with a strong foundation in Computer Science and a passion for building robust, scalable web applications, intelligent AI-driven solutions, and seamless APIs. My expertise lies in crafting high-performance software that is not only functional but also efficient, secure, and maintainable. I take a results-oriented approach, ensuring that every project I work on is tailored to drive business impact. Whether it’s developing a complex web platform, integrating AI-powered functionality, or optimizing cloud deployments, I bring a strategic and collaborative mindset to every challenge. 🔹 What Sets Me Apart? ✅ Comprehensive Full-Stack Expertise: Mastery in both front-end and back-end development ensures seamless integration and high-quality user experiences. ✅ AI-Driven Innovation: Skilled in integrating Machine Learning, Image Processing, and Data Visualization to create intelligent applications. ✅ Cloud & DevOps Proficiency: Extensive experience deploying and managing applications on Google Cloud Platform (GCP), AWS, and Azure with Docker, Kubernetes, and CI/CD pipelines. ✅ API & Microservices Development: Expert in designing RESTful and GraphQL APIs that are secure, scalable, and easy to integrate. ✅ Security-First Approach: Focused on implementing best practices for authentication, authorization, and data protection. 🔹 My Technical Toolkit 💻 Programming Languages: JavaScript, TypeScript, Python, C++, Go, Java, 📌 Frontend Technologies: React.js, Next.js, Redux, Material UI, Tailwind CSS, SCSS 🛠️ Backend & API Development: Node.js, Express.js, NestJS, FastAPI 🗄 Databases: MongoDB, PostgreSQL, Firebase ☁️ Cloud & DevOps: Google Cloud Platform (GCP), AWS, Azure, Docker, Kubernetes, CI/CD Pipelines (Jenkins, GitHub Actions) 🔍 Testing & Debugging: Postman, Swagger 🛡️ Security & Authentication: JWT, OAuth2, Role-Based Access Control (RBAC) 🔹 How I Can Help You 🚀 Develop Scalable Web Applications: From e-commerce platforms to enterprise solutions, I build responsive and intuitive web applications that enhance user engagement. 🔗 Craft Secure & Efficient APIs: Expertise in RESTful API design, third-party integrations, and real-time data processing. 🤖 Implement AI-Powered Functionality: Whether it’s image recognition, NLP, or predictive analytics, I bring AI-driven innovation to your projects. ⚡ Optimize Performance & Scalability: Focused on speed, efficiency, and load balancing to ensure smooth performance under high traffic. 🔄 Automate CI/CD Pipelines: Streamlining development workflows with continuous integration & deployment best practices. 🔹 Experience Highlights ✅ E-commerce Development: Built high-performance platforms with shopping carts, payment integrations (Stripe, Chapa), and advanced search capabilities. ✅ AI & Image Processing: Developed image restoration, intelligent recommendation systems, and computer vision applications. ✅ Enterprise & Real Estate Solutions: Created secure property management and rental platforms with dynamic property listings, user management, and booking features. 💡 Let’s Build Something Amazing! I’m excited to bring my expertise to your project and help turn your vision into a high-impact digital solution.