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Your backend is either built to scale or built to be rewritten. Most clients find out which one after it is too late. I build production-grade Python backends with FastAPI: structured project layouts, async request handling, JWT/OAuth2 authentication, PostgreSQL with proper query optimization, Redis caching layers, and background task queues with Celery or ARQ. Every system I ship is built to run without babysitting. I have shipped backends for clients across automation pipelines, API integrations, and data-heavy systems. Every project delivered with a 100% Job Success Score and a 5.0 rating across the board. The engineers who build clean backends early are the ones who are not rewriting everything six months later. The ones who do not are the ones posting jobs like this one. Whether you need a greenfield FastAPI service scaffolded the right way, an existing Python backend debugged and hardened, or a data pipeline wired into your LLM stack, I have done it. 100% Job Success Score. Every project delivered.

Still relying on spreadsheets, manual work, and disconnected tools to run your business? I build AI-powered automations, SaaS platforms, and custom business systems that help companies save time, reduce operational costs, and scale more efficiently. I'm a Full Stack Developer and founder of Yerradi Labs, where I build software products, AI tools, web applications, and automation systems designed to solve real business problems. My focus is not just writing code — it's building systems that eliminate repetitive work, improve workflows, and create measurable business value. I can help you with: ✅ AI Automation & Workflow Automation ✅ Custom SaaS Development ✅ Business Systems & Internal Tools ✅ Dashboards & Reporting Platforms ✅ Admin Panels & Back-Office Applications ✅ API Integrations ✅ Database Design & Optimization ✅ Web Applications & Portals ✅ Process Automation ✅ Performance Optimization Technical Stack: • ASP.NET Core • ASP.NET MVC • C# • SQL Server • JavaScript • HTML5 / CSS3 • Bootstrap • REST APIs • AI Integrations • Git & GitHub Why clients work with me: ✔ Business-first mindset ✔ Clean, scalable code ✔ Fast communication ✔ Long-term thinking ✔ Reliable delivery ✔ Focus on real business outcomes Whether you need a custom SaaS platform, AI-powered workflow, business dashboard, internal management system, or automation solution, I can help you build software that saves time and supports growth. Let's turn your process into a system.

I am a highly experienced full stack web developer delivering high-performance websites and applications for businesses around the world. I specialize in full-stack web applications, custom WordPress development and AI-powered applications. I have led Projects for well-known companies like Clevenio, CSI-DMC and Monerus, and I bring the same level of dedication to every project, no matter the size. ***************** As a Full Stack Developer I have extensive experience with a Web application, Mobile Applications, Desktop Application Development, UI/UX Design, Tech Support, Cloud Architect, and Consulting Projects involving technologies like Wordpress, PHP, Python, Java, C#, Javascript, React, Angular, Node.js, Express.js, Shopify, Objective-C, React Native, AWS, GCP, Microsoft Azure, etc. 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗖𝗮𝗻 𝗘𝘅𝗽𝗲𝗰𝘁: Fast turnarounds: I deliver high-quality results on time, ensuring your project stays on track and meets your deadlines. Problem-solving mindset: Complex challenges don’t slow me down. I approach each problem with a solution-first mentality. Long-term support: After your website is live, I’m here to provide ongoing support and updates to ensure its continued success. Let’s work together to build something extraordinary! Whether you need a stunning website, a complex web app, a mobile solution, or AI integration, I’m here to help bring your vision to life. 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲: Proven results: From Monerus to Edukids and CSI DMC, I’ve helped businesses across various industries achieve their web development goals. Client-centered approach: I build long-term relationships with my clients, delivering consistent, high-quality work that exceeds expectations. My goal is to over-deliver and ensure every client feels valued. Clear communication: I believe in transparency, providing regular updates and maintaining open communication throughout the project to keep you informed at every stage. 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬: Fullstack Web Applications Custom WordPress Development & WooCommerce Mobile App Development (React Native, Flutter) AI-Powered Application Development Wix & HubSpot Customization React.js, Vue.js, Laravel, Node.js API Integration & Payment Gateways (Stripe, PayPal) Responsive, Mobile-First Design SEO & Performance Optimization Git Version Control for smooth project management 𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝘁𝗵𝗲 𝗧𝗮𝗯𝗹𝗲: Full-Stack Expertise: My skills in React.js, Vue.js, Laravel, and Node.js allow me to create dynamic, scalable web applications that elevate your online presence. Custom WordPress Development: From bespoke themes to complex customizations, I build WordPress sites that align perfectly with your business goals. Mobile App Development: I create high-performing, cross-platform mobile apps using React Native and Flutter, ensuring a smooth experience across devices. AI Application Development: I integrate artificial intelligence solutions into web and mobile applications to enhance functionality, automate tasks, and provide smarter user experiences. Wix and HubSpot Development: Whether you need a Wix website or require HubSpot CRM and marketing tool integrations, I ensure seamless development and customization to help your business grow. API Integrations: Seamless integration with third-party APIs (Google, Facebook, Salesforce) to extend the functionality of your site. Security and Speed Optimization: I prioritize security and performance, ensuring fast-loading websites that rank high on Google. E-Commerce Solutions: Whether it’s Shopify, WooCommerce, or custom platforms, I help businesses build and optimize online stores that drive conversions.

--Hello World-- I am Hamza Kachachi, a dynamic and versatile professional with a passion for technology and innovation. With a strong foundation in various facets of the tech industry, I bring a unique blend of skills and expertise to the table. My journey in the realm of development has equipped me with proficiency in both front-end and back-end technologies, including HTML5, CSS, JavaScript, jQuery, Nodejs, Expressjs, Laravel, CodeIgniter, PHP, and Python. My grasp of architectural principles, such as microservices and MVC, allows me to craft robust and efficient solutions, while my adeptness in database management extends to both SQL and NoSQL databases like MySQL and MongoDB. I am well-versed in utilizing Git and GitLab for version control, ensuring seamless collaboration in coding projects. Guided by agile methodologies and a keen understanding of Scrum, I am experienced in project management tools like JIRA, enabling me to navigate complex projects with precision and efficiency. My familiarity with cloud computing, web hosting, and API development empowers me to build scalable and interconnected web applications. I am particularly skilled in leveraging the MERN Stack - uniting MongoDB, Express.js, React, and Node.js - to engineer cutting-edge web applications that seamlessly marry functionality with user experience. Moreover, my proficiency in data analysis and interface design, fueled by tools like Figma, adds an extra layer of insight and aesthetic finesse to my work. My journey is characterized by a commitment to continuous growth and innovation, bolstered by a strong analytical mindset and a flair for problem-solving. With a solid foundation in technology, a strategic vision, and a proactive approach to challenges, I am poised to make meaningful contributions to the ever-evolving world of tech.

I am a developer with 4 years of experience in .NET application development, holding a Bachelor’s degree from the Faculty of Science and Technology in Settat. Throughout my career, I have had the opportunity to work on various projects, ranging from web application development to database management, always with a focus on quality and optimization. _Team Collaboration I have experience working closely with developers, project managers, and other stakeholders to ensure that all technical and business requirements are met. My experience with the Agile methodology has taught me how to adapt quickly to changes, deliver incremental improvements, and maintain constant communication with the team. I value open communication and teamwork, which I believe are essential for creating efficient solutions and delivering high-quality projects. _Continuous Learning I am a proactive learner who consistently seeks to improve my technical skills. Throughout my career, I have dedicated time to refining my expertise in .NET and have applied this same approach to learning and mastering new technologies. Whether it's adopting new frameworks, tools, or methodologies, I am always eager to embrace change and stay up-to-date with industry trends to ensure that my solutions are modern and efficient. _Technical Skills and Expertise I possess a broad and in-depth knowledge of various technical environments, which enables me to tackle complex projects effectively. Here’s a detailed breakdown of my technical expertise: - Programming Languages: C#, SQL, Typescript, JavaScript. - Frameworks: Spring.NET, AureliaJS, Angular, AngularJS, Silverlight, Chai Assertion Library. - ORM (Object-Relational Mapping): Entity Framework, NHibernate. - Databases: PostgreSQL, SQL Server, Oracle. - Web Technologies: HTML5, CSS, SASS, JavaScript, XAML, JQuery, Bootstrap. .- NET Technologies: ASP.Net MVC, ASP.Net Web API, .NET Core, WCF (REST & SOAP), LINQ, MSTest, API Design, WPF, WebForms, WinForms. - Systems/Servers: Windows, IIS. - Version Control: Git, TFVC (Team Foundation Version Control). - Web Services: REST, SOAP. - Cloud Platforms: Microsoft Azure. - Methodologies: Agile/Scrum, Kanban, Design Patterns. - Tools: JIRA, Confluence, GitLab, Gitflow, TFS, Visual Studio 2022, Visual Studio Code, SonarQube, Sonar, Azure DevOps, DBeaver, Notepad++, mRemoteNG. _My previous project roles and contributions: Development (Build): I was responsible for implementing new features and enhancements in our application. I handled bug fixes reported by testers or clients to ensure smooth operation. I wrote technical documentation and synthesis reports to explain how to test the new features. I conducted unit tests to maintain software stability and reliability. I also participated in a major Frontend migration from Silverlight to AureliaJs. Support (Run): I frequently managed high-priority tickets and special assignments within the application. I performed code reviews to ensure and improve the quality of the codebase. I also proposed technical solutions to maintain and enhance the application efficiently. _Languages • English: My current level is intermediate, and I am eager to improve it. • French: I am fluent in French and can also communicate effectively in this language if needed.

𝐇𝐚𝐯𝐞 𝐚𝐧 𝐢𝐝𝐞𝐚 𝐟𝐨𝐫 𝐚 𝐖𝐞𝐛 𝐀𝐩𝐩 𝐨𝐫 𝐒𝐚𝐚𝐒 𝐛𝐮𝐭 𝐧𝐞𝐞𝐝 𝐬𝐨𝐦𝐞𝐨𝐧𝐞 𝐰𝐡𝐨 𝐜𝐚𝐧 𝐭𝐮𝐫𝐧 𝐢𝐭 𝐢𝐧𝐭𝐨 𝐚 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭? I’m a Full Stack Developer specializing in Next.js, TypeScript, and Node.js, helping startups and growing businesses build fast, scalable web applications from idea to production. I don’t just write code, I build complete systems that are clean, reliable and ready to grow with you. If you need a Full Stack Developer who understands both frontend experience and backend architecture, you’re in the right place. I work with modern stacks to create high performance SaaS platforms, dashboards, internal tools, and custom web applications that users actually enjoy using. Here’s how I can help: 👉🏼 𝐂𝐮𝐬𝐭𝐨𝐦 𝐖𝐞𝐛 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 End to end development using Next.js, TypeScript, and Node.js, from UI to API to database. 👉🏼 𝐒𝐚𝐚𝐒 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Authentication, subscriptions, Stripe integration, multi tenant architecture, and scalable backend systems. 👉🏼 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐰𝐢𝐭𝐡 𝐍𝐞𝐱𝐭.𝐣𝐬 SEO friendly, fast loading interfaces with clean UI and smooth user experience. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 🚀 𝐒𝐚𝐚𝐒 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 Multi-tenant SaaS platforms Subscription systems Role-based dashboards Admin panels & reporting systems ⚙️𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 Next.js production-grade applications React frontends with optimized rendering Node.js and Express backend systems REST APIs and secure authentication 💳 𝐏𝐚𝐲𝐦𝐞𝐧𝐭 & 𝐒𝐮𝐛𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 Stripe integration Webhooks & recurring billing logic Usage-based pricing systems Secure checkout flows 📊 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 & 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐓𝐨𝐨𝐥𝐬 Business analytics dashboards Workflow automation systems CRM and internal management tools Data-heavy reporting applications 🔐 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 Scalable API architecture PostgreSQL and MongoDB database design Authentication and authorization systems Microservices-ready backend structure 𝐖𝐡𝐨 𝐈 𝐖𝐨𝐫𝐤 𝐁𝐞𝐬𝐭 𝐖𝐢𝐭𝐡 SaaS founders building MVP to production Startups needing a reliable long-term developer Agencies outsourcing complex React or Node.js builds Businesses scaling existing web applications I am not a template developer. I build structured, scalable systems meant for growth. Why Clients Hire Me ✔ Strong focus on scalable SaaS architecture ✔ Clean, maintainable TypeScript code ✔ Business-oriented development approach ✔ Clear communication and structured workflow ✔ Comfortable joining existing teams or leading builds I think beyond features. I think in systems. 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 Languages: JavaScript ES6+, TypeScript Frontend: React.js, Next.js Backend: Node.js, Express.js, NestJS Databases: PostgreSQL, MongoDB, MySQL Payments: Stripe, subscription systems DevOps: Docker, CI/CD, Git workflows Architecture: REST APIs, Webhooks, scalable backend design 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐒𝐜𝐚𝐥𝐚𝐛𝐥𝐞 If you are developing a SaaS platform, subscription product, or full stack web application and need a developer who understands both architecture and business growth, send me a message with your idea. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 Senior Full Stack Developer, Full Stack Engineer, MERN Stack Developer, React.js Expert, Next.js Expert, Node.js Backend Developer, Express.js Developer, NestJS Developer, JavaScript Developer, Frontend Developer, Backend Engineer, Web App Developer, Custom Web Application Developer, SaaS MVP Developer, Startup MVP Developer, Product Development Engineer, Cloud Application Developer, API Integration Specialist, Secure Authentication Systems, JWT Authentication, OAuth Integration, Payment Gateway Integration, Stripe Developer, Webhook Integration, Subscription Billing Systems, SaaS Architecture Expert, Database Design Specialist, PostgreSQL Expert, MongoDB Expert, SQL Developer, Admin Panel Developer, Dashboard Developer, Internal Tools Developer, Automation Developer, Business Process Automation, Performance Optimization Expert, Scalable Backend Developer, High Performance Web Apps, Server Side Rendering Next.js, SEO Friendly Web Applications, Deployment Specialist, DevOps Support, Git Workflow Expert, Agile Developer, Scrum Team Developer,Long term full stack developer,Full stack developer long term,Full stack developer permanent remote,Full time full stack developer, Full time frontend developer,Frontend developer long term,React developer full time,Frontend developer contract to hire,Next.js developer long term,Frontend developer ongoing project,Dedicated frontend developer.