We are seeking a Senior Developer to join our cloud-native software engineering team responsible for building and operating a modern Azure-based platform and on premise solutions in the Rail sector. The role combines development, technical direction, and development ownership, with a strong focus on Kubernetes, C#/.NET, and adoption of AI-driven capabilities across our products and services. You will play a key role in defining the future technical roadmap, ensuring our platform remains scalable, secure, and ready to leverage emerging technologies, including AI and intelligent automation. Technical Design & Architecture * Contribute to design, development, and implementation of cloud-based and edge-based software solutions using C#/.NET. * Recommendation of technical design decisions for complex systems spanning Azure-hosted services, distributed applications, and on-board software agents running on unmanned hardware. * Define and drive software architecture, ensuring solutions are scalable, resilient, secure, maintainable, and aligned with long-term business objectives. * Establish engineering standards, design patterns, and development best practices across teams. Software Development & System Ownership * Take ownership of critical applications and services throughout their lifecycle, from design and delivery through to operational support and continuous improvement. * Lead the resolution of complex technical challenges, production incidents, and cross-system integration issues. * Drive performance optimisation, reliability improvements, and technical debt reduction initiatives. * Ensure applications meet high standards for performance, security, quality, and operational excellence. Cloud, Infrastructure & DevOps * Work with infrastructure team on the design and evolution of Azure infrastructure, deployment strategies, observability, and operational practices. * Drive DevOps maturity through automation, Infrastructure as Code (IaC), CI/CD enhancements, and deployment governance. * Establish monitoring, logging, alerting, and recovery strategies for cloud and edge-based systems. * Champion security, compliance, and resilience best practices across the software delivery lifecycle.   Distributed Systems & Messaging * Lead the design and implementation of scalable messaging and integration architectures using message orientated architecture, event-driven patterns, and distributed systems principles. * Define communication standards and strategies for interactions between cloud services and remote hardware deployments. Evaluate and the introduction of new technologies and architectural approaches where appropriate.