WMS Software Engineer

McKesson is an impact-driven, Fortune 10 company that touches virtually every aspect of healthcare. We are known for delivering insights, products, and services that make quality care more accessible and affordable. Here, we focus on the health, happiness, and well-being of you and those we serve – we care. What you do at McKesson matters. We foster a culture where you can grow, make an impact, and are empowered to bring new ideas. Together, we thrive as we shape the future of health for patients, our communities, and our people. If you want to be part of tomorrow’s health today, we want to hear from you.

The WMS Software Engineer - IBM i / AS400 Specialist plays a critical role in designing, developing, and delivering high-quality software solutions that support McKesson's Warehouse Management Systems across its Distribution Centers. This position focuses on the IBM i platform and requires hands-on expertise in RPGLE, CLLE, SQL, and modern Integrated Language Environment development practices. The role translates business and technical requirements into modular, scalable solutions; supports platform reliability and interoperability; and drives disciplined engineering through automation, testing, Agile delivery, and CI/CD practices. The engineer will collaborate with technical teams, business partners, and vendors to enhance warehouse operations and support Order-to-Cash processes.

Research, design, develop, test, debug, implement, and manage solutions for Warehouse Management Systems supporting McKesson Distribution Centers. Participate in implementation, development, enhancement, and modification of software source code and scripts while staying current with new technologies, methodologies, and industry best practices. Analyze requirements; create and automate tests; and verify and validate that system and software solutions meet specified business and technical requirements. Monitor application performance, identify errors, perform root cause analysis, and implement appropriate remediation. Integrate solutions across applications and platforms while ensuring interoperability, reliability, and adherence to design principles. Liaise with vendors and internal partners to resolve functionality or interoperability issues affecting new and existing applications. Use DevOps and Agile processes to deliver functionality quickly and effectively while iterating through continued development. Own development activities from technical planning through deployment, and participate in technical design reviews and code reviews. Apply automation, CI/CD practices, version control, testing, and disciplined release management to improve quality and delivery reliability. Share best practices, provide technical guidance, and mentor or teach other team members as appropriate. Contribute to technical roadmaps and strategic planning for technologies used across McKesson's Distribution Centers. Create and maintain clear technical documentation, development standards, and operational support materials.

4+ years of professional software development experience, including exposure to enterprise scale systems. Hands-on software development experience on the IBM i series (AS400) using RPGLE, CLLE, and SQL. Ability to craft modern, modular ILE programs using RPGLE, SQL, and CLLE. Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or an equivalent combination of education and experience. Demonstrated commitment to staying current with language enhancements and platform feature expansion on IBM i. Strong knowledge of the Systems Development Lifecycle (SDLC), Agile delivery methodologies, and collaborative version-control workflows. Experience developing, testing, troubleshooting, and supporting mission-critical enterprise applications. Applied understanding of software integration patterns, service-to-service communication, release management,