Integration Developer/Middleware Specialist

About the role

The Integration Developer / Middleware Specialist leads the design and implementation of all system integrations for VAASM, focusing on end-to-end financial transparency.

Responsibilities

• Design and implement the full integration architecture for VAASM, including API specifications, data exchange contracts, and middleware patterns.
• Develop and maintain all system integration components connecting Appian, Palantir, VA legacy financial systems (OLCS, UFMS, IPPS), and enterprise services.
• Build and test automated funds check interfaces that validate funding availability and record legal obligations upon contract award.
• Implement real-time LOA data linkages connecting contract line items to financial management systems for end-to-end obligation traceability.
• Develop API gateway configurations, authentication/authorization flows, and integration security controls in alignment with VA OIT requirements.
• Maintain API documentation, integration runbooks, and system-to-system data dictionaries for all integration touchpoints.
• Collaborate with the Enterprise Architect to ensure all integration designs adhere to the program's architectural standards and VA technology guidelines.
• Support integration testing activities, including developing test cases for end-to-end data flow validation and regression testing.
• Participate in ATO support activities, providing integration-specific security documentation, data flow diagrams, and control evidence.
• Troubleshoot and resolve integration performance and reliability issues in test and production environments.
• Mentor junior developers and data engineers on integration best practices and API development standards.

Qualifications

• Direct experience building integrations on or with the Appian platform using Appian's Connected Systems and Web API capabilities.
• Familiarity with VA enterprise integration standards, MuleSoft, IBM MQ, or equivalent middleware platforms used in federal environments.
• Experience integrating federal financial management systems such as UFMS, IPPS, or equivalent LOA data sources.
• Knowledge of HL7 FHIR, EDI, or other federal data exchange standards as applicable to VA environments.
• Experience supporting FedRAMP High or VA ATO accreditation for integrated system components.