Sr Application Developer

Interstates•Sioux Center, IA

7d•Hybrid

About The Position

At Interstates, technology is not the target - it is an amplifier. We are building a digitally enabled, constraint-managed enterprise where data and AI strengthen judgment, reduce friction, and improve how workflows across the business. This Senior Application Developer role sits in the execution core of a cross-functional team, turning business priorities into reliable application solutions, clean integrations, and practical automation that create measurable leverage without losing the craftsmanship, accountability, and customer focus that define our work. The Senior Application Developer is responsible for the planning and design of significant portions of complex application solutions with minimal supervision. This role leads the programming, implementation, testing, documentation, and support of software applications that may include databases, user interfaces, APIs, and external system integrations. This position works as a key member of the delivery team alongside business, integration, analytics, and data science partners to define scope, system behavior, architecture, reporting, deployment, and startup support needs. The ideal candidate is a hands-on developer who can solve practical problems, make sound technical decisions, and help deliver outcomes that improve flow, reduce rework, and strengthen performance across the business.

Requirements

Bachelor’s degree in Computer Science, Information Systems, or a related field preferred.
5+ years of experience in application development, programming, or a related technical role, or equivalent combination of education and experience.
Experience independently leading the design, development, testing, and support of moderately complex to complex software solutions.
Strong working knowledge of software development lifecycle practices, relational databases, application integration, and technical troubleshooting.
Experience working directly with customers and project teams to define requirements and support implementation.
Experience providing technical guidance, reviewing work, and supporting the development of others.
Strong communication, organization, problem-solving, and judgment skills.
Ability to work cooperatively in a team environment and manage shifting priorities.

Nice To Haves

Experience with API-driven integrations, workflow automation, or content and data processing capabilities.
Experience designing solutions that improve efficiency, reliability, throughput, or decision-making in business workflows.
Experience contributing to technical standards, solution design, and project estimates.
Experience mentoring team members or helping train others.
Familiarity with modern development tools, AI-assisted development workflows, and efficient coding practices is a plus.
Exposure to structured and unstructured data, digital workflows, or operational dashboards preferred.

Responsibilities

Plan and design significant portions of complex applications with minimal supervision.
Work with project teams to define scope, system behavior, reporting/documentation needs, architecture, user experience, and startup support requirements.
Program, implement, test, document, and support application components and system functionality.
Develop and support databases, user interfaces, APIs, and external system integrations.
Apply software development lifecycle practices to build reliable, supportable software solutions.
Develop and help enforce programming standards and reusable development practices.
Assist in technical design and effort estimating for projects.
Mentor and help train less experienced team members.
Maintain confidentiality of sensitive customer and business information.
Perform other duties as assigned or required.