The Senior Software Engineer – IBM i plays a critical role within the Operations Technology team, supporting and evolving a portfolio of legacy IBM i / AS400 applications that underpin core freight and warehouse operations. They maintain highly stable, long-running systems that have been in continuous production for over two decades and remain essential to business continuity. They bring deep expertise in RPG development, strong analytical skills for navigating undocumented codebases, and the ability to implement low-risk, high-impact changes. They work closely with the Operations Development Manager and collaborate cross-functionally with engineering teams to support ongoing system integration efforts. While the primary focus remains on legacy system support, the role offers exposure to modern technologies such as REST APIs and microservices. The ideal candidate thrives in complex, under-documented environments and is passionate about stabilizing and improving mission-critical systems...