VistA/MUMPS Sustainment Subject Matter Expert

VistA/MUMPS Sustainment Subject Matter Expert

Job Summary

Seeking a VistA/MUMPS Sustainment Subject Matter Expert (SME) to provide technical expertise in the sustainment, maintenance, troubleshooting, and production support of VistA and MUMPS-based applications. The SME will support Tier 2/Tier 3 production issues, defect resolution, root cause analysis, release readiness, and continuous improvement activities.

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, interfaces, and environment-related issues.
• Provide 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.
• Strong analytical and troubleshooting skills.
• Excellent written and verbal communication skills, with the ability to explain complex technical issues to both technical and non-technical audiences.

Preferred Qualifications

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

Required Technical Skills

• VistA
• MUMPS
• VistA Routines
• Globals
• FileMan
• Data Dictionaries
• Cross-References
• VistA Package Dependencies
• Tier 2/Tier 3 Production Support
• Incident & Defect Management
• Root Cause Analysis

Preferred Technical Skills

• Department of Veterans Affairs (VA) Systems
• Federal Healthcare Systems
• Release Management
• Agile
• DevSecOps
• System Monitoring
• Data Correction
• Table Maintenance
• Legacy System Modernization
• Federal Compliance