Ensure the operational maintenance and continuity of the system after its Entry into Operations, guaranteeing that it remains stable, secure and performant across all environments. Provide second-level support by analysing and resolving incidents, problems and service requests in accordance with defined service levels. Perform corrective, adaptive, preventive and perfective maintenance activities to sustain operability and compliance with the Contracting Authority’s technical, operational and security baselines. Monitor system health and performance through observability tools, respond proactively to alerts and events, and coordinate with DevSecOps Engineers for deployments, automation improvements and environment optimisation. Collaborate with Database Administrators, Architects and the CA’s Operational teams to ensure effective system operation, configuration management and change control. Participate in change and release management activities, ensuring deployment readiness, rollback planning and validation testing. Contribute to post-incident reviews and root-cause analyses, maintain operational documentation, runbooks and knowledge-base articles, and support knowledge transfer and handover activities to guarantee service sustainability and continuity of expertise. Provide operational support for middleware and integration components forming the overall technical landscape, including gateways, data transformation and messaging platforms, identity and access management systems, web servers and content management platforms.