Senior Fullstack Developer (.NET, React, Claude)

Around 5 years of commercial software development experience.Strong, proven experience with C# and .NET / .NET Core.Practical knowledge of React and frontend fundamentals (HTML/CSS/JavaScript best practices).Solid experience building modern Web Applications, SaaS products, and designing REST APIs.Strong computer science foundations (data structures, algorithms, OOP, and design patterns).Experience with cloud architectures (Azure, AWS, or GCP) and distributed systems concepts (concurrency, scalability).An innovative mindset and excitement about deeply integrating AI tools into your daily coding workflow.Nice to Have:Experience with API gateways, identity/authentication, and messaging platforms (e.g., Kafka, RabbitMQ, SQS).Knowledge of container orchestration tools (e.g., Kubernetes).Experience modifying/optimizing SDLC processes or acting as a Technical Lead on key initiatives. About the Project:Are you looking for a project where Artificial Intelligence isn’t just a buzzword, but a core part of your daily workflow? Join our newly formed engineering team working on a pioneering, total greenfield project! We are building two brand-new products from scratch within the Invoice-to-Cash domain.Our solutions are being developed using a modern .NET + React stack, with a massive emphasis on AI-powered development. In this role, you will leverage advanced AI tools (such as Claude Code / Cursor) on a daily basis—building and iterating on coding agents to automate repetitive engineering tasks, speed up delivery, and elevate code quality. The project has a dynamic, startup-like vibe: zero legacy code, meaning we define our own quality standards and SDLC processes.Why Join Us? (Key Selling Points)Total Greenfield: Build distributed systems completely from scratch, entirely free from the constraints of legacy code.Next-Level AI Integration: Work with a cutting-edge framework centered around AI agents. You will actively shape how AI transforms software engineering.Shape the SDLC: Have a real, hands-on impact on designing the development lifecycle from scratch—including testing standards, deployment pipelines, and CI/CD.Startup Culture: No rigid corporate red tape. Enjoy fast-paced decision-making and genuine ownership over architecture and product direction.Strong Leadership Support: The project is fully backed by dedicated FTE Managers, Product Managers, and seasoned Tech Leads ,[Design, build, and maintain scalable backend services and RESTful APIs using C# / .NET Core., Develop and evolve modern web frontends in React (the experience layer consuming our APIs)., Design components within service-oriented and microservices architectures., Actively use Claude Code / Cursor in your day-to-day engineering (prompt-driven coding, refactoring, test generation, and agent automation)., Contribute to core system design, ensuring high scalability, reliability, security, and performance., Implement and improve observability (logging, metrics, tracing) and API monitoring across services., Work with cloud-native services and support containerized deployments (e.g., Kubernetes).] Requirements: C#, .NET, .NET CORE, React, HTML, CSS, JavaScript, Web applications, SaaS products, REST API, Data structures, Algorithms, OOP, Design Patterns, Azure, AWS, GCP, AI, API Gateway, Kafka, RabbitMQ, SQS, Kubernetes, SDLC