Senior API & Integration Engineer

Introduction

We’re motivated by the fact that educators take care of our children’s future, and we believe they deserve someone to look after theirs. We help educators identify their financial goals and develop plans to achieve them. This includes insurance to protect what they have today and financial products to help them prepare for their future.

Horace Mann is a purpose-driven company that is passionate about educators. We are seeking a Senior API & Integration Engineer to design, build, and support APIs and application integrations across a complex enterprise environment. This role focuses on modern API development while supporting and gradually modernizing existing middleware and service bus capabilities.

Location: In person - Springfield, IL
Department: Information Technology

The ideal candidate has hands‑on experience with enterprise integration patterns, API lifecycle management, and cloud‑based integration platforms, and is comfortable working in hybrid environments that span legacy systems (including mainframe and SOAP services) and modern cloud‑native solutions. This role will play a key part in our ongoing migration from TIBCO Business Works to Azure API Management and Azure‑native integration technologies.

• Opportunity to work on enterprise‑scale integration modernization
• Exposure to both legacy and modern cloud‑native architectures
• Collaborative environment with strong architectural and engineering practices
• Competitive compensation and benefits
• Professional development and growth opportunities

• Design, develop, and maintain APIs and application integrations supporting business‑critical systems.
• Build and enhance RESTful APIs, while maintaining and modernizing existing SOAP‑based services.
• Develop and support integrations across:
  • Internal enterprise applications
  • Mainframe systems
  • Vendor and SaaS platforms
• Implement integrations using Azure API Management and related Azure services (e.g., Logic Apps, Functions, Service Bus, Event Grid).
• Support and gradually migrate existing TIBCO Business Works integrations to Azure‑based solutions.
• Apply enterprise integration patterns (synchronous, asynchronous, messaging, event‑driven).
• Ensure integrations meet security, performance, reliability, and scalability standards.
• Collaborate with architects, product teams, and application developers on integration design and best practices.
• Participate in code reviews, design reviews, and technical troubleshooting.
• Contribute to integration standards, documentation, and reusable components.
• Provide production support and participate in on‑call rotation as required.

• Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
• 5+ years of experience in middleware, API development, or application integration.
• Strong experience designing and building APIs and services.
• Hands‑on experience with SOAP and REST service development and consumption.
• Experience working with enterprise service buses or middleware platforms (e.g., TIBCO Business Works, Mule Soft, IBM Integration Bus, etc.).
• Experience integrating with legacy systems, including mainframe environments.
• Solid understanding of integration patterns, messaging, and distributed systems.
• Proficiency in at least one modern programming language commonly used for integration (e.g., Java, C#, or similar).
• Solid understanding of relational databases (SQL).
• Strong problem‑solving skills and ability to work in complex, multi‑system environments.

• Experience with Azure integration services, including:
  • Azure API Management
  • Azure Logic Apps
  • Azure Functions
  • Azure Service Bus or Event Grid
• Experience participating in or leading middleware modernization or cloud migration initiatives.
• Familiarity with API security concepts (OAuth 2.0, OpenID Connect, certificates).
• Experience with CI/CD pipelines for integration and API deployments.
• Knowledge of monitoring and observability for distributed integrations.
• Experience in regulated or large enterprise environments. (e.g., Financial Services, Insurance)