Linux Middleware Systems Administrator

Unison

Linux Middleware Systems Administrator supporting Linux servers and middleware platforms for federal acquisition processes at Unison. Responsibilities include administration, monitoring, and operational documentation.

Posted 6/9/2026full-timeTysons • Virginia • 🇺🇸 United StatesMid-LevelSenior💰 $100,000 - $150,000 per yearWebsite

Tech Stack

Tools & technologies

ApacheDNSFirewallsJavaLinuxMySQLOraclePostgresTCP/IP

About the role

Key responsibilities & impact

Administer, configure, patch, troubleshoot, and maintain Linux servers, primarily Red Hat Enterprise Linux and similar distributions.
Support Linux server builds, system baselines, hardening, vulnerability remediation, documentation, and operational procedures.
Support middleware platforms for application integration, SOA services, APIs, web services, data movement, and batch processing.
Support Talend components including TAC, JobServers, Runtime, ESB, Tomcat, and Karaf.
Monitor, troubleshoot, patch, upgrade, deploy, restart, and validate Talend jobs, routes, schedules, logs, runtime services, and middleware components.
Respond to production alerts, outages, Talend failures, Linux issues, middleware incidents, and database connectivity problems.
Work with DBA, Hosting, Development, Security, and Support teams to resolve incidents, performance, access, patching, backups, and maintenance.
Participate in on-call and after-hours production support as needed.
Follow change management procedures for changes, patches, deployments, configuration updates, and emergency fixes.

Requirements

What you’ll need

5+ years of Linux systems administration experience in a production, SaaS, hosting, or enterprise environment.
Strong hands-on experience with Red Hat Enterprise Linux or similar enterprise Linux platforms.
Experience supporting middleware, Talend, SOA services, APIs, web services, or application integration platforms.
Experience with Apache Tomcat, Apache Karaf, Java runtime services, or similar middleware components.
Experience troubleshooting PostgreSQL, Oracle, and MySQL database connectivity.
Working knowledge of TCP/IP, DNS, firewalls, ports, load balancers, VPN, and basic network troubleshooting.
Experience with patching, vulnerability remediation, system hardening, and operational maintenance.
Strong troubleshooting, documentation, and communication skills.
Ability to work independently and with cross-functional technical teams.
Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field preferred.
Equivalent hands-on experience may be considered.

Benefits

Comp & perks

Unison has pioneered the creation of innovative software for federal agencies, program offices, and government contractors worldwide.
Health insurance
401(k) matching
Flexible work hours
Paid time off
Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Linux administrationRed Hat Enterprise Linuxmiddleware supportTalendApache TomcatApache KarafJava runtime servicesPostgreSQLOracleMySQL

Soft Skills

troubleshootingdocumentationcommunicationindependencecross-functional collaboration