IT Sr Manager, Applications Engineering - Legacy Systems

AAON Inc

Tulsa, OK

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, 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), Server Support, Software Engineering, System Integration (SI), Team Lead/Manager, Technical Leadership, Use Cases
LOCATION
Tulsa, OK
POSTED
11 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

  1. 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

  1. 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)

  1. 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

  1. 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

  1. 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

  1. 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

  1. 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 Inc