Mainframe Operations Engineer (z/OS)

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.

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.
• Workplace type: Hybrid (50% onsite, 50% remote).
• Location: Parque das Nações, Lisboa.