Mainframe Application Developer

Job Description – Mainframe Application Developer

Location: Des Moines, IA Hybrid Role

Duration: Long-Term Contract

Required Skills:

•Strong proficiency in COBOL.

•Hands-on experience with JCL and mainframe batch-processing environments.

•Experience developing or maintaining programs using Easytrieve.

•Experience using Endevor for source-code management and application deployment.

•Experience supporting or configuring scheduled workloads through Control-M.

•Strong understanding of application development patterns, concepts, frameworks, and services.

•Ability to write clean, readable, well-organized, and supportable code.

•Understanding of reusable code libraries and modular application design.

•Strong written and verbal communication skills.

Required Experience:

•6+ years of professional application development experience.

•Demonstrated experience supporting and enhancing enterprise applications in a production environment.

•Experience translating application requirements, storyboards, and use cases into technical solutions.

•Strong understanding of scalable application design principles.

•Experience writing efficient, reliable, maintainable, and reusable code.

•Experience identifying and resolving application defects, performance bottlenecks, and production issues.

•Familiarity with common software design and architectural patterns.

•Experience working with application frameworks, services, reusable libraries, and established development standards.

•Experience supporting batch-processing applications and scheduled jobs.

•Ability to analyze existing applications and implement enhancements without negatively affecting current functionality.

•Strong testing, debugging, troubleshooting, and problem-solving skills.

•Ability to work independently while collaborating effectively with technical and business teams.

Responsibilities:

•Support, maintain, and enhance the Membership application.

•Complete application backlog, enhancement, maintenance, and defect-resolution work.

•Translate application storyboards, business requirements, and use cases into functional applications.

•Design, build, test, and maintain efficient, reusable, and reliable application code.

•Analyze existing applications, batch jobs, data flows, and dependencies to determine appropriate solutions.

•Identify application bottlenecks, defects, and operational issues and implement effective solutions.

•Ensure application performance, quality, reliability, and responsiveness.

•Write clean, readable, maintainable, and reusable code.

•Maintain code quality, organization, documentation, and automation.

•Troubleshoot production issues and provide timely technical support.

•Participate in code reviews, testing, implementation planning, and production deployments.

•Collaborate with business partners, product owners, analysts, developers, and support teams.

•Follow established software development lifecycle, change-management, and source-control practices.

•Document application changes, technical designs, support procedures, and operational processes.

•Provide knowledge transfer to internal team members.

Desired Skills:

•Experience supporting membership, customer, or policy-related applications.

•Experience working with legacy enterprise applications that integrate with distributed or modern application platforms.

•Experience with job scheduling, production monitoring, incident resolution, and root-cause analysis.

•Knowledge of automated testing and deployment practices in a mainframe environment.