Work Schedule

Rotational days/weekends

Environmental Conditions

Office

Job Description

As part of the Thermo Fisher Scientific team, you’ll discover meaningful work that makes a positive impact on a global scale. Join our colleagues in bringing our Mission to life every single day to enable our customers to make the world healthier, cleaner and safer. We provide our global teams with the resources needed to achieve individual career goals while helping to take science a step beyond by developing solutions for some of the world’s toughest challenges, like protecting the environment, making sure our food is safe or helping find cures for cancer.

DESCRIPTION:

The Mainframe Operator is responsible for the day-to-day operation, monitoring, and control of mainframe computer systems to ensure reliable, secure, and efficient processing. This role supports critical business applications by executing batch jobs, monitoring system performance, responding to alerts, and escalating issues as needed.

Key Responsibilities

Monitor mainframe systems (e.g., IBM z/OS) to ensure availability and performanceStart, stop, and monitor batch jobs, online regions, and system tasksRespond to system alerts, console messages, and error conditionsPerform job scheduling and manage workloads using tools such as CA-7, and CSAR.Execute operational procedures, including IPLs, system restarts, and recovery steps (as authorized)Maintain system logs and operational documentationEscalate incidents to system programmers or support teams when requiredSupport backup, recovery, and disaster recovery proceduresEnsure compliance with security, audit, and change management policiesProvide shift handover updates and participate in 24/7 operations as required

REQUIREMENTS:

Associate’s or Bachelor’s degree in Information Technology, Computer Science, or equivalent experienceExperience operating IBM Mainframe systems (z/OS preferred)Familiarity with:JCL (Job Control Language)JES2/JES3TSO/ISPF (basic level)Mainframe scheduling toolsAbility to follow detailed operational procedures and runbooksStrong attention to detail and problem-solving skillsEffective communication skills for incident reporting and escalation

Preferred Qualifications

Experience in a 24x7 production environmentKnowledge of mainframe storage (DASD, tape systems)Basic understanding of mainframe security (e.g., RACF, ACF2, Top Secret)Exposure to ITIL-based operations or enterprise change management

Work Environment

Shift-based role (including nights, weekends, and holidays)High-availability, mission-critical systems environmentRequires ability to respond calmly and effectively to system incidents