As a **Senior Full\-Stack Developer**, you will play a critical role in developing, maintaining, and scaling Lumi’s mobile and backend systems. You will work on both **React Native mobile applications** and **NestJS\-based backend services**, contribute to architectural decisions, and ensure high performance, security, and scalability. This role requires hands\-on expertise, strong problem\-solving skills, and experience working with real\-world production systems. **Key ResponsibilitiesFrontend / Mobile Development** * Develop, enhance, and maintain **React Native** mobile applications (**Android \& iOS**). * Improve UI/UX performance, responsiveness, and stability. * Fix bugs, optimize existing features, and implement new functionality. * Integrate APIs and third\-party services efficiently. * Ensure smooth app deployment to **App Store \& Play Store.** **Backend Development** * Design, develop, and maintain backend services using **NestJS (Node.js)**. * Build and manage **RESTful APIs** for mobile and web platforms. * Optimize backend performance, security, and scalability. * Work with authentication, authorization, and role\-based access control. * Integrate real\-time services and background jobs where needed. **AI \& Smart Features** * Collaborate on AI\-driven features such as automation, recommendations, and intelligent workflows. * Work with AI APIs, data pipelines, and AI\-based decision systems. * Support integration of AI modules into mobile and backend systems. **DevOps \& Infrastructure** * Work with **CI/CD pipelines** for automated build, test, and deployment. * Experience with **Azure Cloud** (App Services, Storage, Databases, Functions, etc.). * Manage environments (Development, UAT, Production). * Ensure system reliability, monitoring, and performance optimization. **Code Quality \& Collaboration** * Maintain clean, scalable, and well\-documented code. * Use **GitHub** for version control, pull requests, and code reviews. * Collaborate with product managers, designers, and QA teams. * Participate in technical planning, estimations, and architecture discussions. **Required Skills \& ExperienceMust\-Have Skills** * **4\+ years of experience** in mobile and full\-stack development. * Strong expertise in **React Native**. * Strong experience with **NestJS** and **Node.js**. * Excellent knowledge of **JavaScript / TypeScript**. * Experience building and consuming **RESTful APIs**. * Solid understanding of **Git / GitHub workflows**. * Experience with **CI/CD pipelines**. * Hands\-on experience with **cloud hosting (Azure preferred)**. * Strong debugging, optimization, and problem\-solving skills. * Experience maintaining and improving existing production apps. **AI \& Advanced Skills (Highly Preferred)** * Experience working with **AI\-powered features or APIs**. * Understanding of AI workflows, data processing, or ML integration. * Experience integrating AI into mobile or backend systems. **Email at support@lumi.qa** Job Types: Full\-time, Permanent, Contract Contract length: 24 months Pay: QAR5,000\.00 \- QAR7,000\.00 per month