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# Appian System Administrator - Clearance Required

- **Company:** LMI
- **Location:** Fort Belvoir, VA, United States
- **Experience:** Expert
- **Salary:** $144,000.0
- **Contract:** Permanent contract
- **Skills:** Active Directory, Agile Methodology, Authentication Protocols, Cloud Computing, Configuration Management, Information Systems, Knowledge Management, Lightweight Directory Access Protocols (LDAP), Performance Tuning, Runbook, Security Assertion Markup Language (SAML), Single Sign-On, Software Deployment, Software Engineering, Systems Integration, Diagnostic Tools, Enterprise Software Applications, System Availability, Software Troubleshooting, Appian, SC Clearance, Information Technology, Devsecops
- **Published:** October 31, 2026
- **Apply:** https://www.adzuna.com/details/5877138776

## About the Role

* Bachelor's degree in Information Technology, Computer Science, Information Systems, Engineering, or a related field; equivalent relevant experience may be considered.
 * 5+ years of experience in system administration, enterprise application administration, application operations, or related technical roles.
 * Demonstrated experience administering enterprise applications and supporting application deployments, configurations, access controls, and troubleshooting.
 * Experience with platform monitoring, logs, diagnostic tools, configuration management, and performance troubleshooting.
 * Experience supporting identity and access technologies such as LDAP, Active Directory, SSO, SAML, or certificates.
 * Strong understanding of enterprise application architecture, integrations, security, and operational support processes.
 * Active Secret clearance or ability to obtain and maintain one.
 * U.S. citizenship required.

DESIRED SKILLS

 * Appian Platform administration or application operations experience strongly preferred.
 * Appian certification or formal Appian training.
 * Experience with Appian Cloud or Appian GovCloud and related platform support processes.
 * Experience with Appian in-memory KDB engines, environment sizing, scaling, and performance optimization.
 * Experience supporting DoD contract writing, acquisition, or other federal mission-critical applications.
 * Familiarity with DoD RMF, STIGs, DISA security guidance, and security hardening activities.
 * ITIL Foundation, Security+, or comparable technical certification.
 * Experience working in Agile or SAFe delivery environments.

## Description

The ideal candidate combines strong Appian platform knowledge with practical systems administration, integration, performance, and security experience and will work closely with developers, solution architects, DevSecOps engineers, database administrators, information assurance personnel, and functional stakeholders.

 * Administer and maintain Appian Platform environments supporting ACWS application development, testing, staging, and production operations.
 * Perform Appian application deployments, configuration changes, environment promotions, and release support in accordance with approved procedures.
 * Manage Appian users, groups, roles, permissions, service accounts, and access-related configuration in coordination with security and program policies.
 * Monitor Appian platform health, performance, capacity, logs, services, integrations, and system availability and take corrective action as needed.
 * Support Appian Cloud configuration and platform support processes and coordinate with hosting or vendor support organizations when required.
 * Troubleshoot complex Appian application, integration, performance, configuration, and connectivity issues and coordinate with development and infrastructure teams for resolution.
 * Support enterprise identity and access integrations, including LDAP, Active Directory, SSO, SAML, certificates, and related authentication mechanisms.
 * Support Appian in-memory data and platform architecture considerations, including sizing and horizontal or vertical scaling activities as directed.
 * Coordinate with database administrators, DevSecOps engineers, cybersecurity personnel, and solution architects on platform changes, maintenance, and incident resolution.
 * Support security hardening, configuration compliance, patching, and operational documentation for Appian environments.
 * Maintain configuration records, runbooks, operational procedures, and troubleshooting guides and contribute to knowledge management.
 * Participate in Agile planning, release activities, testing, user acceptance testing, and production implementation efforts.