Senior Azure/Java Integration Expert for EESSI Support

(Title):Senior Azure Cloud & Java Integration Expert for EU Social Security System Support (EESSI / JINA)Περιγραφή Project (Project Description):Dear candidates,We are seeking an experienced Azure Cloud Infrastructure & Java/Integration Specialist to act as a key technical subcontractor. You will support our company in executing a critical public sector IT contract in Greece, involving the maintenance, technical support, and enhancement of the connection between the Greek Social Security Agency (e-EFKA) and the European Electronic Exchange of Social Security Information (EESSI) infrastructure.System Architecture & Technical Stack:Cloud Environment: Microsoft Azure (Virtual Machines running Windows Server 2019 Datacenter, Apache HTTP, Tomcat Application Servers, Elasticsearch, and Application Gateways).Database: Azure Database for PostgreSQL (Flexible Server).Core Software / Application: EESSI National Application, specifically JINA (JUMP's Implementation of National Application / successor to RINA) utilizing B2B protocols (e.g., HolodeckB2B) and XML structured documents (SEDs) / Business Use Cases (BUCs).Security & Compliance: Management, procurement, installation, renewal, and testing of official SSL/TLS digital certificates and security seals across Production, UAT, and Test environments.Key Responsibilities:Software & Interface Maintenance: Identify, troubleshoot, and resolve bugs/malfunctions in the JINA/EESSI application and its interfaces. Apply minor releases, patches, and updates provided by the European Commission or the JUMP consortium. Infrastructure & Database Support: Monitor, tune, and maintain the Azure cloud infrastructure and PostgreSQL flexible server databases to ensure optimal performance and high availability. Custom Interoperability & Development: Implement up to 100 man-days annually of custom adaptations, new interfaces, or technical adjustments as required by evolving EU/agency specifications. Help Desk & SLA Compliance: Coordinate with our management team to handle technical support requests, logging issues via ITSM tools, and strictly adhering to response/resolution time targets (e.g., system restoration SLA $\le 24$ hours). Reporting: Assist in drafting technical reports, tracking incident logs, and documenting system updates. Requirements & Qualifications:Proven hands-on expertise in Microsoft Azure administration, DevOps, and Windows Server environments. Strong background in managing PostgreSQL databases (specifically Azure Flexible Server). Experience with Java-based enterprise applications (Tomcat, Spring Boot), B2B messaging protocols, and XML/integration standards. Familiarity with European institutional IT projects (e.g., EESSI, e-Codex, PEPPOL) is a strong plus.Excellent English communication skills and ability to collaborate remotely under strict institutional SLAs.Contract Details:Duration: 1-year contract (with an option for a 1-year extension). Collaboration Model: Subcontracting / Remote ongoing support with back-to-back SLA commitments.When applying, please highlight your specific experience with Azure cloud management, PostgreSQL optimization, and any background in EU interoperability projects.