About the position
The Senior 'Mainframe & Java' Software Developer will take part of a major mainframe modernization at GM. The job provides an exciting opportunity to work in a fast faced environment utilizing a modern development toolkit with the introduction of Dev Ops tools and practices for the GM Mainframe. The ideal candidate will bring a mixed experience in mainframe, java, web, and integration development and be capable of designing multi-application cross-functional solutions. This individual will lead or co-lead our modernization initiatives which consist of fortifying legacy applications or building new applications while developing plans to migrate key business functionality to the cloud or on-premises virtual infrastructure. In this role, you are responsible for developing or enhancing software applications using sound, repeatable, systematic, and quantifiable approach to application development on a foundation of industry best practices and in accordance with GM's software development/project methodology (Agile mostly). The Software Developer will contribute to the definition of technical features and stories and will work hands-on writing code based on requirements and system specifications (features and user stories). Development activities will include updating existing software and/or developing new programs to address a specific need or solve a particular business or technical problem. Additionally, our organization is undergoing a transformation to transform application code developed in traditional mainframe languages (PL1, Cobol) to JAVA running on Z Systems using assistance from AI LLM solutions (Generative AI). You will have exposure to this transformation and lead related activities.
Responsibilities
- Estimation, Analysis, Design, Design reviews, Coding, Code reviews, unit testing in small increments of work.
- Troubleshooting (root cause analysis) and debugging applications in different programming languages.
- Software testing and quality assurance with focus on automation at all layers (Unit, System and Integration, UI).
- Document software code and ensure that technical documentation i.e. configuration guides, install guides, system designs, others meet requirements.
- Develop and Integrate software with existing systems.
- Convert application code developed in traditional mainframe languages to JAVA and modern JAVA frameworks using Code Assistance tools and generative AI, leading development, testing, and deployment activities.
- Maintain standards compliance.
- Perform Level 3 / on-call support for GPSC mainframe or JAVA applications currently running in Production.
- Estimate, and design small increments of work for other developers.
- Mentor less experienced team members and apprentices.
- Report status of assigned software development and/or maintenance tasks consistently following the specified software development methodology.
- Promote improvements in lean software engineering practices such as test-driven development, continuous integration, and continuous delivery.
- Communicate effectively.
Requirements
- Bachelors degree in Computer Science, Engineering, Mathematics, or technical discipline. Equivalent work experience will be considered in lieu of degree.
- 7+ years of experience as a developer.
- Languages: Java, PL/1, Cobol, and JCL.
- IMS DC/TM for transactional processing.
- ISPF Panels, CLIST, Skeletons, REXX.
- Database: IMS & DB2, Oracle & PostgreSQL.
- Scheduling tools: IWS.
- Source Code and deployment Management: Azure DevOps, IBM DBB, GitHub, GitActions.
- Development IDE: IBM IDz / RDz, IntelliJ, VSCode, or other Eclipse based.
- Experience with modern mainframe toolsets to help with discovery, profiling, and migration automation.
- CI/CD experience in defining and managing the build, deployment, and release pipelines.
Nice-to-haves
- Hands-on experience using JAVA, REST, microservices, and containers (Pivotal Cloud Foundry or Docker/Kubernetes) and integrating mainframe and midrange applications.
- Solid understanding of midrange platforms and frameworks such as SpringBoot and Spring.
- Agile, SCRUM, KANBAN methodologies.
- zDevOps: IBM Developer for Z Systems, ADO, GIT, IBM DBB.
- IBM tools: ITOM, RACF, Connect-Direct, IBM Rational Functional Tester, IBM Optim, ADDI.
- Test Automation.