Tier 3 Service Desk Technician - Clearance Required

Overview

LMI is seeking a Tier 3 Service Desk Technician to support Army Acquisition, Training, and Readiness (AT&R) and provide advanced technical support for the Army Contract Writing System (ACWS). ACWS is built on the Appian Platform. This position will resolve complex application, system, integration, performance, and configuration issues that require technical investigation beyond routine service desk support.

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.
Responsibilities

The successful candidate will work closely with end users, functional SMEs, developers, Appian specialists, database administrators, DevSecOps engineers, cybersecurity personnel, and other technical teams to maintain ACWS availability, reliability, and user support quality.

- Provide Tier 3 technical support for ACWS users and service desk teams through enterprise service management and support processes.

- Troubleshoot complex application, system, integration, performance, configuration, and data issues using logs, diagnostics, monitoring tools, and structured problem-solving techniques.

- Serve as a technical escalation point for Tier 2 support personnel and coordinate resolution of incidents that require advanced analysis.

- Provide on-call response for mission-critical issues as required and document troubleshooting steps, decisions, and resolutions in the case management system.

- Investigate recurring incidents, issue clusters, and problem trends and support root cause analysis and continual service improvement.

- Coordinate with Appian developers, database administrators, DevSecOps leads, QA personnel, and external partners to resolve cross-functional issues.

- Support application releases, system updates, testing, evaluations, user acceptance testing, and production implementation activities.

- Develop complete escalation packages for software defects and engineering teams, including problem statements, replication steps, diagnostic history, evidence, and expected-versus-actual behavior.

- Develop and maintain knowledge articles, troubleshooting procedures, SOPs, FAQs, and self-service resources to improve first-contact resolution and reduce ticket volume.

- Provide user guidance, targeted communications, and training related to recurring issues, application features, and best practices.

- Support account, access, configuration, and basic system administration activities within approved operational processes.

- Participate in Agile ceremonies and customer engagements to communicate technical status, risks, and resolution needs.

Qualifications
MINIMUM QUALIFICATIONS:

- Associate's degree in Information Technology, Computer Science, or a related field; equivalent relevant experience may be considered.

- 5+ years of experience in Tier 2 or Tier 3 service desk, application support, system support, or related technical support roles.

- Strong troubleshooting skills across enterprise applications, integrations, operating environments, and data flows.

- Experience using ITSM or enterprise ticketing systems and documenting incidents, resolutions, and knowledge content.

- Experience troubleshooting software errors, bugs, configuration issues, performance problems, and data discrepancies using logs and diagnostic tools.

- Abil