VistA/MUMPS Sustainment SME

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.