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Infrastructure Application and Database SME - Lead at Jobgether. This position is posted by Jobgether on behalf of Nationwide IT Services, Inc. We are currently looking for an Infrastructure Application and Database SME – Lead in District of Columbia (USA) or Virginia (USA).. We’re looking for a senior-level technical expert to lead and optimize mission-critical Oracle-based environments supporting complex Department of Defense operations. This highly strategic role requires advanced proficiency in enterprise applications, databases, and middleware infrastructure, as well as the ability to guide high-impact architecture decisions. Working in a dynamic federal context, you’ll collaborate with executive stakeholders and lead multidisciplinary teams to ensure secure, scalable, and high-performing systems that support over 300,000 users.. . Accountabilities:. . Serve as the subject matter expert on Oracle infrastructure, middleware, and enterprise technologies within a DoD environment.. . Provide senior-level technical direction, engineering oversight, and independent analysis on complex issues related to Oracle application and database systems.. . Administer and optimize technologies such as Oracle EBS Financials, RAC, GoldenGate, Active Data Guard, and Fusion Middleware 12.2+.. . Lead system architecture reviews and ensure compliance with DoD security frameworks and operational standards.. . Manage and support a broad suite of Oracle tools including SOA Suite, OBIEE, Hyperion, EDQ, SSO/OAM, OIM, UPK, and GRC.. . Mentor cross-functional technical teams, ensuring optimal uptime, secure performance, and scalable operations.. . Develop and deliver comprehensive technical documentation, system designs, troubleshooting guides, and strategic recommendations.. . . Minimum of 10 years of progressive experience in enterprise infrastructure, Oracle platforms, and middleware systems.. . Proven success managing large-scale Oracle environments supporting over 300,000 production users.. . Expertise in Oracle EBS Financials ERP, Oracle RAC, GoldenGate, Active Data Guard, and performance tuning.. . Deep experience with Oracle Fusion Middleware 12.2+, SOA, OBIEE, Hyperion, and related tools.. . Strong knowledge of ITIL frameworks, DoD RMF standards, and STIG compliance.. . Active IT-I Critical Sensitive or Tier 5 (T5) clearance at the time of proposal submission.. . Outstanding communication skills with a strong ability to create and present polished technical documentation to government stakeholders.. . Preferred: Oracle certifications, experience with DoD financial systems, large-scale ERP/cloud migrations, and FedRAMP environments.. . Company Location: United States.