Senior API & Integration Engineer

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 BusinessWorks to Azure API Management and Azure-native integration technologies.

Key Responsibilities

• 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 BusinessWorks 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.

Required Qualifications

• 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 BusinessWorks, MuleSoft, 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.

Preferred Qualifications

• 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)

What We Offer

• 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

Pay Range:

• $89,800.00 - $125,500.00  

Salary is commensurate to experience, location, etc.