Jobs · Engineering · Oklahoma

IT Sr Manager, Applications Engineering - Legacy Systems

AAON, Inc. · Tulsa, OK · 3 wk ago
EngineeringFull-time

Key Responsibilities

  • Define and execute the enterprise integration strategy spanning legacy and modern platforms
  • Establish integration patterns (APIs, messaging, ETL, event-driven) and standards
  • Partner with Data & Analytics leadership to align integrations with data lake and reporting initiatives
  • Lead the team supporting mainframe/legacy integrations and interfaces
  • Ensure stability, performance, and reliability of existing integrations
  • Document and rationalize current-state integrations and dependencies
  • Develop a roadmap for coexistence, simplification, and eventual decommissioning of legacy systems
  • Transition into leadership of a .NET-based integrations and development team
  • Oversee development of APIs, services, and integration components (.NET, C#, Web APIs)
  • Drive modernization toward reusable, scalable integration services
  • Align development efforts with enterprise architecture and cloud platform (Azure preferred)
  • Enable integration with enterprise data platforms (data lake, Azure SQL, etc.)
  • Support ingestion pipelines for analytics and reporting use cases
  • Collaborate with Power BI and analytics teams to deliver reliable, governed data flows
  • Improve data quality, consistency, and governance across systems
  • Oversee APIs, middleware, ETL pipelines, and system interfaces
  • Manage integration lifecycle (design, build, deploy, monitor, optimize)
  • Ensure performance, scalability, and observability of integrations
  • Support SQL Server and data integration performance tuning
  • Lead a Hybrid Team Of Legacy/mainframe integration resources (short-term) Modern integration engineers and .NET developers (long-term)
  • Drive transition planning from legacy skillsets to modern integration capabilities
  • Manage Agile delivery, backlog prioritization, and capacity planning
  • Establish integration governance, standards, and documentation practices
  • Ensure secure data movement and adherence to enterprise policies
  • Implement monitoring, logging, and auditing for integrations
  • Partner With Enterprise Applications Data & Analytics teams
  • Business stakeholders
  • External vendors/partners
  • Act as the primary IT leader for integration-related initiatives and decisions

Required Qualifications

  • 10+ years in IT with strong experience in systems integration and application development
  • Experience supporting legacy/mainframe systems and integrations
  • Experience with modern integration technologies (APIs, ETL, middleware)
  • Strong background in .NET development (C#, ASP.NET, Web APIs)
  • Strong experience with SQL Server, ETL and data integration concepts
  • Experience leading technical teams across both legacy and modern environments
  • Familiarity with cloud platforms (Azure preferred)

Preferred Qualifications

  • Experience integrating ERP platforms (SAP, D365, etc.)
  • Experience supporting data lake or analytics ecosystems
  • Experience with Power BI or enterprise reporting platforms
  • Experience with integration platform tools (iPaaS, messaging frameworks)

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