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IT Sr Manager, Applications Engineering - Legacy Systems

AAON

Tulsa, Oklahoma

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JOB DETAILS
SKILLS
Agile Programming Methodologies, Application Programming Interface (API), Auditing, Backlog Prioritization, Business Continuity Planning (BCP), Capacity Management, Cloud Architecture, Cloud Computing, Cross-Functional, Data Analysis, Data Lake, Data Quality, Database Extract Transform and Load (ETL), Delivery Management, Ecosystems, Enterprise Application Integration (EAI), Enterprise Architecture, Enterprise Data Integration, Information Technology & Information Systems, Information/Data Security (InfoSec), Leadership, Mainframe Computer, Metrics, Microsoft .NET, Microsoft ASP.NET (Active Server Page), Microsoft C# (C Sharp), Microsoft SQL Server, Microsoft Windows Azure, Middleware, Performance Tuning/Optimization, Power BI, Quality Management, Reporting Skills, SAP ECC (fka SAP R/3 and SAP ERP), SQL (Structured Query Language), Server Support, Software Engineering, System Integration (SI), Team Lead/Manager, Technical Leadership, Use Cases
LOCATION
Tulsa, Oklahoma
POSTED
3 days ago

Job Description:

The IT Integrations Manager is responsible for leading the design, delivery, and modernization of enterprise integrations across both legacy (mainframe) systems and modern application platforms.

This role will initially oversee a team supporting mainframe-based integrations, ensuring stability, reliability, and continuity of business-critical data flows. In parallel, the role will transition into leading a modern enterprise integrations and .NET development team, driving API-based integrations, data platform connectivity, and reporting/analytics enablement (e.g., Power BI).

This leader will play a key role in bridging legacy and future-state architectures, enabling the organization’s transition toward a scalable, cloud-enabled integration and data ecosystem.

Key Responsibilities 

1. Integration Strategy & Architecture 

  • 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 

 

2. Legacy System Leadership (Interim) 

  • 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 

 

3. Modern Integration & .NET Leadership (Future State) 

  • 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)  

 

4. Data Platform & Reporting Integration 

  • 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  

 

5. Integration Delivery & Platform Management 

  • 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  

 

6. Team Leadership & Transition Management 

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  

 

7. Governance, Security & Compliance 

  • Establish integration governance, standards, and documentation practices 

  • Ensure secure data movement and adherence to enterprise policies 

  • Implement monitoring, logging, and auditing for integrations  

 

8. Stakeholder & Cross-Functional Collaboration 

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) 

 

Key Success Metrics 

  • Stability and reliability of legacy integrations during transition

  • Reduction in legacy integration complexity over time 

  • Successful migration to modern API-based architecture 

  • Improved availability and quality of data for reporting/analytics 

  • Delivery velocity and quality of .NET integration services 

  • Alignment between application, integration, and data strategies  

 

Position Impact 

  • Ensures continuity of critical legacy operations 

  • Enables transition to a modern, scalable integration architecture 

  • Acts as a key bridge between enterprise applications, integrations, and analytics

  • Directly supports AAON’s future-state data and reporting capabilities 

About the Company

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AAON