[Remote] Linux Middleware Systems Administrator (Remote - Occasional Office Visits Required)

Note: The job is a remote job and is open to candidates in USA. Unison is a company that powers the business of government by providing AI-infused software and deep domain expertise. They are seeking a Linux Middleware Systems Administrator to support Linux servers, middleware platforms, and database-connected applications in hosted SaaS environments, ensuring stable and secure systems through administration, monitoring, and troubleshooting.ResponsibilitiesAdminister, configure, patch, troubleshoot, and maintain Linux servers, primarily Red Hat Enterprise Linux and similar distributionsSupport Linux server builds, system baselines, hardening, vulnerability remediation, documentation, and operational proceduresSupport middleware platforms for application integration, SOA services, APIs, web services, data movement, and batch processingSupport Talend components including TAC, JobServers, Runtime, ESB, Tomcat, and KarafMonitor, troubleshoot, patch, upgrade, deploy, restart, and validate Talend jobs, routes, schedules, logs, runtime services, and middleware componentsTroubleshoot issues involving connectivity, credentials, permissions, APIs, databases, Java, memory, certificates, and configuration settingsRespond to production alerts, outages, Talend failures, Linux issues, middleware incidents, and database connectivity problemsSupport middleware, Talend, and application connectivity to PostgreSQL, Oracle, and MySQLTroubleshoot database issues involving JDBC drivers, connection strings, ports, credentials, certificates, firewalls, DNS, and service accountsWork with DBA, Hosting, Development, Security, and Support teams to resolve incidents, performance, access, patching, backups, and maintenanceParticipate in on-call and after-hours production support as neededFollow change management procedures for changes, patches, deployments, configuration updates, and emergency fixesSkills5+ years of Linux systems administration experience in a production, SaaS, hosting, or enterprise environmentStrong hands-on experience with Red Hat Enterprise Linux or similar enterprise Linux platformsExperience supporting middleware, Talend, SOA services, APIs, web services, or application integration platformsExperience with Apache Tomcat, Apache Karaf, Java runtime services, or similar middleware componentsExperience troubleshooting PostgreSQL, Oracle, and MySQL database connectivityWorking knowledge of TCP/IP, DNS, firewalls, ports, load balancers, VPN, and basic network troubleshootingExperience with patching, vulnerability remediation, system hardening, and operational maintenanceAbility to use logs and monitoring tools to investigate system, middleware, Talend, and database connectivity issuesStrong troubleshooting, documentation, and communication skillsAbility to work independently and with cross-functional technical teamsWillingness to participate in on-call rotation and production supportBachelor's degree in Information Technology, Computer Science, Engineering, or a related field preferred. Equivalent hands-on experience may be consideredExperience supporting FedRAMP, NIST, federal, or regulated environmentsExperience with Bash, Python, Ansible, PowerShell, or similar scripting toolsExperience with AWS, Azure, VMware, or hosted infrastructure environmentsExperience with SSL/TLS certificates and secure service communicationLinux, Red Hat, AWS, Tenable, Security+, or ITIL certifications are a plusBenefitsTravel and accommodations will be provided for the in-person interview.Company OverviewUnison is a software company that offers contracting and financial assistance processes for agencies and government contractors. It was founded in 1983, and is headquartered in Dulles, Virginia, USA, with a workforce of 201-500 employees. Its website is https://unisonglobal.com.