Operational Security Engineer (Mainframe)

Location: Brussels, Belgium; mandatory 50% on-site work and 50% homeworking

Company

hirify.global provides consultancy services, placing consultants in client IT and security environments.

What you will do

• Manage system permissions and access outside IAM, including RACF database content manually or through automation.
• Create security standards and documentation, and implement rules that support infrastructure teams.
• Handle encryption activities, including certificate imports and configuration of technical agents for HSMs.
• Assess the security of new Mainframe products before production deployment.
• Resolve security incidents, investigate error messages, implement fixes, and support users with minimal disruption.
• Provide compliance evidence to IT Risk, asset owners, and auditors; address audit findings, anticipate risks, and participate in an on-call rotation covering non-business hours, weekends, and holidays approximately one week per month.

Requirements

• At least 10 years of relevant experience, including hands-on Mainframe cybersecurity experience.
• English is mandatory; Dutch and French are preferable.
• Bachelor's degree and mandatory RACF Security Administrator certification.
• Knowledge of RACF and surrounding utilities, Mainframe architecture, and basic Mainframe tools including JCL, ISPF, REXX, and SDSF.
• Knowledge of role-based security modelling, AT-TLS, certificates, Public Key Infrastructure, Mainframe CryptoCards, and Unix System Services.
• Knowledge of security for DB2, IMS, MQ, Mainframe subsystems, Spool, network, storage, SMF, and job scheduling.
• Analytical, critical-thinking, problem-solving, creative, proactive, and collaborative skills, with an agile mindset and willingness to take ownership or learn.

Nice to have

• zSecure RACF certification and knowledge of the zSecure product suite.
• Knowledge of the Control job scheduler, COBOL, and Endevor.
• Experience in the financial sector.

Culture & Benefits

• Consultancy employment with hirify.global and placement in a client environment.
• Exposure to varied technical and strategic challenges across client projects.
• Career growth and learning opportunities through diverse consultancy engagements.
• Work combines on-site client collaboration with homeworking; travel is not applicable.
• Consultants are expected to demonstrate technical expertise, accountability, collaboration, and a consultancy mindset.