Senior Integration Developer Jobs in Michigan (NOW HIRING)

Hastings Insurance is seeking a Senior Integration Developer to support, modernize, and streamline the core integrations powering our Property & Casualty systems. This role blends technical design, hands-on C# development, and cross-functional collaboration to build and maintain reliable integrations across our enterprise footprint, including a growing catalog of modern microservices.

This role is ideal for an intellectually curious backend developer who enjoys understanding complex systems under the hood, refining established service patterns, and helping shape our move toward containerized deployments.

• Design & Build | Develop and deploy maintainable microservices, APIs, and integration components that streamline how data and workflows move across core P&C platforms.
• Modernize Architecture | Partner with enterprise architecture to expand our catalog of decoupled services and advance our transition toward containerized deployments.
• Shape Engineering Culture | Help establish AI-assisted development best practices (e.g., leveraging AI tools to accelerate coding, testing, and code review workflows) to boost team productivity.
• Elevate the Team | Provide technical mentorship, participate in code reviews, and help maintain high standards for code quality and documentation.

• Technical Depth | 5+ years of hands-on backend software development focused on enterprise systems integration, API design, and clean separation of concerns.
• Modern .NET & C# | Solid production experience with C# and modern .NET frameworks (with a focus on keeping pace with current Microsoft releases like .NET 8/10).
• Architecture & Messaging | Strong understanding of service boundaries, database design, asynchronous messaging patterns, and building for long-term maintainability.
• Intellectual Curiosity & Problem-Solving | A natural drive to dig into complex systems, understand how things work at a fundamental level, and continuously evaluate new tools, patterns, and technologies to improve system architecture and team efficiency.
• Integration Range | Comfort working across integration technologies spanning different framework generations, and moving fluently between them as system requirements dictate.
• Containerization Readiness | Familiarity with container technologies (e.g., Docker) and a desire to help architect containerized deployment pipelines that improve team workflow.
• Modern SDLC & AI Tools | Pragmatic view of software engineering best practices, including automated testing, CI/CD, and incorporating AI-driven developer tools into daily workflows.
• Domain Experience (Nice to Have) | Background in Property & Casualty (P&C) insurance or complex financial systems is a plus, but strong backend fundamentals come first.

This is a full-time position working Monday through Friday, 8:00 a.m. to 4:30 p.m. The role may be performed onsite at our Hastings, Michigan headquarters or in a hybrid arrangement. We will also consider remote candidates who reside in one of our operating states: Michigan, Ohio, Indiana, Illinois, or Wisconsin. Additional states may be considered if the candidate's background is otherwise strong. 

For more than 135 years, Hastings Insurance has helped individuals, families, and businesses protect what matters most. As a trusted partner to independent agents and policyholders, we've earned a reputation for financial strength, exceptional service, and long-term stability, including an A (Excellent) financial strength rating from A.M. Best. 

While we're proud of our history, we're equally focused on the future. We're investing in technology, strengthening partnerships with independent agents, and continuously evolving our products and services to meet the changing needs of our customers. 

Just as importantly, we're investing in our people. Employees enjoy a collaborative, down-to-earth culture where initiative is valued, growth is encouraged, and good work is recognized. We offer competitive pay and benefits, including a 401(k) with company matching contributions, generous paid time off, tuition and professional development assistance, and company performance-based incentive compensation opportunities. 

At Hastings Insurance, we believe our people are our greatest strength. We foster a workplace where employees are treated with respect, supported in their growth, and empowered to contribute. We know that diverse perspectives lead to stronger collaboration, better decisions, and better outcomes for our customers and communities. 

We are proud to be an equal opportunity employer. Employment decisions are based on business needs, job requirements, and individual qualifications, without regard to any legally protected characteristic. 

If you require a reasonable accommodation during the application or interview process, please contact our Talent Acquisition team at 800-442-8277.