Role Title - VistA/MUMPS Sustainment Subject Matter Expert

Key Responsibilities

• Provide expert guidance on VistA and MUMPS-based application sustainment.
• Analyze, triage, and resolve VistA defects, incidents, service requests, and production issues.
• Perform root cause analysis across code, data, configuration, workflow, interface, and environment-related issues.
• Support Tier 2 and Tier 3 production support, including incident prioritization, escalation, workaround identification, and resolution planning.
• Develop and review defect resolution plans, including remediation approach, code/data impacts, testing strategy, release considerations, and rollback planning.
• Support testing, validation, release readiness, deployment planning, documentation updates, and post-release monitoring.
• Collaborate with developers, testers, product owners, release managers, operations teams, and government stakeholders.
• Recommend improvements to sustainment processes, defect prevention, monitoring, backlog management, and knowledge transfer.

Required Qualifications

• Significant hands-on experience with VistA sustainment, operations, maintenance, or modernization.
• Strong knowledge of MUMPS programming and VistA technical architecture.
• Experience with VistA routines, globals, FileMan, data dictionaries, cross-references, and package dependencies.
• Proven ability to diagnose and resolve production defects in legacy or mission-critical systems.
• Experience with Tier 2/Tier 3 support, ticket triage, defect management, and structured software delivery processes.
• Ability to communicate complex technical issues clearly to both technical and non-technical audiences.

Preferred Qualifications
Prior experience supporting Department of Veterans Affairs systems or federal healthcare platforms.
Familiarity with VA product-line delivery models, federal sustainment practices, release management, Agile, DevSecOps, and compliance requirements.
Experience with monitoring, root cause analysis reporting, data correction, table maintenance, or legacy system modernization.