I am a passionate software engineer with 7+ years of experience designing, building, integrating, deploying, and maintaining scalable web, mobile, and enterprise applications.
I enjoy working across the full product lifecycle, from understanding business requirements and designing technical solutions to building user-focused applications, integrating APIs, improving performance, supporting deployments, and maintaining production systems.
- 🔭 Currently working on web, mobile, and cross-platform collaboration systems
- 👨💻 Experienced in React, TypeScript, Node.js, Flutter, Dart, React Native, and API integrations
- 🏗️ Strong background in enterprise applications, government platforms, e-learning systems, and digital transformation projects
- 🧠 Interested in scalable software architecture, clean code, DevOps, cloud deployment, and AI-assisted development
- 🤝 Experienced in leading engineering teams, coordinating releases, stakeholder communication, and production support
- 💬 Ask me about full-stack development, mobile applications, web systems, backend integration, and software delivery
✅ Full-stack web application development
✅ Mobile application development with Flutter, Dart, and React Native
✅ REST API integration and backend service development
✅ Authentication, authorization, and secure user workflows
✅ Database design, data handling, and performance-aware queries
✅ Cross-platform collaboration features such as messaging, calls, and meetings
✅ Deployment support, troubleshooting, and production maintenance
✅ Team leadership, release coordination, and stakeholder communication
- Scalable backend design
- Cloud and DevOps engineering
- Kubernetes-based deployments
- Clean architecture and maintainable code
- AI-assisted software development
- High-quality web and mobile product delivery
- 📧 Email: niyoceles3@gmail.com
- 📍 Location: Kigali, Rwanda
- 💼 LinkedIn: Niyonsaba Celestin
I am always open to collaborating on meaningful software projects, enterprise platforms, mobile apps, and digital transformation solutions.