Mainframe Operations Engineer (z/OS)

Employment: Full-time Experience level: Mid-Senior Level Job Description We are looking for an experienced Mainframe Operations Engineer to join a team responsible for the operation, monitoring, and support of critical Mainframe platforms. This role is ideal for a professional who thrives in production environments, works autonomously, and is passionate about ensuring system stability, performance, and operational excellence. Your Responsibilities: Provide Level 2 operational and application support for z/OS environments. Monitor and supervise batch processing activities, ensuring compliance with defined SLAs. Define, schedule, execute, and track jobs using TWS and Control-M. Investigate, troubleshoot, and resolve incidents related to production workloads, batch processing, and file transfers. Manage Mainframe resources, including datasets, GDGs, JES queues, catalogs, and disk space. Support and monitor file transfer processes using CFT / Connect:Express. Participate in production releases, change activities, and planned out-of-hours interventions when required. Act as a technical integrator, collaborating with development, application, production, and operations teams. Ensure adherence to DevOps best practices, including automation, observability, security, and operational quality. Produce and maintain operational documentation, procedures, and performance reporting. Qualifications Your Profile: Proven experience in Mainframe Operations and Support roles within z/OS environments. Strong knowledge of JCL, TSO, ISPF, SDSF , and z/OS monitoring activities. Hands-on experience with workload scheduling and automation tools such as TWS (IBM Workload Scheduler) and/or Control-M . Solid understanding of CICS, DB2, IMS, and VSAM environments. Experience executing and analysing SQL queries in DB2/SPUFI , including incident diagnosis and troubleshooting. Knowledge of IBM MQ / MQ Series , including queue, channel, and messaging flow management. Experience with CFT / Connect:Express or similar managed file transfer solutions. Familiarity with ITSM tools, preferably ServiceNow . Knowledge of monitoring and observability platforms such as Dynatrace . Understanding of ITIL v4 , Agile methodologies, and critical production environments. Soft Skills: Strong communication and collaboration skills. Excellent analytical thinking and organizational capabilities. Ability to work independently and manage priorities effectively. Strong sense of ownership, responsibility, and attention to detail. Comfortable working in structured and business-critical environments. Languages: English (B2 level minimum) is mandatory. French is a plus. Additional Information Workplace type: Hybrid (50% onsite, 50% remote). Location: Parque das Nações, Lisboa. Company Description Inetum is a European leader in digital services. Inetum’s team of 28,000 consultants and specialists strive every day to make a digital impact for businesses, public sector entities and society. Inetum’s solutions aim at contributing to its clients’ performance and innovation as well as the common good. Present in 19 countries with a dense network of sites, Inetum partners with major software publishers to meet the challenges of digital transformation with proximity and flexibility. Driven by its ambition for growth and scale, Inetum generated sales of 2.5 billion euros in 2023.