10/21/2026 updated
DG
100 % available
Senior z/OS Mainframe Engineer | CICS & MQ Specialist
Amstelveen, Netherlands
Only remote
Ion Ghica High School, Braila, RomaniaIBM Parallel SysplexZ/OSIbm Mq
z/OS System Programming & Administration
Expertise in z/OS system programming and administration, covering JES2, JCL, ISPF, SDSF, SMP/E, IPL, WLM, APF, HCD/IODF, HMC, SMF, and IPCS. Extensive experience in maintenance, security, performance tuning, health checks and operational support across large banking and enterprise environments.
MQ for z/OS Administration & Engineering
Deep knowledge of MQ for z/OS including QSG, shared queues, CF structures, SMDS, structure backup, certificates, CHLAUTH/CONNAUTH, logging/recovery, page set sizing, pub/sub, performance and resilience tuning. Hands-on experience designing and delivering Ansible-driven MQ upgrade solutions across multiple environments.
CICS Administration & Performance Tuning
Comprehensive CICS administration on z/OS, including installation/customization, SMP/E, DFHISTAR, RDO/CPSM, CSD/BAS, CICS-MQ connectivity, TCP/IP services, CICSPlex SM, MRO, monitoring and performance tuning. Supported hundreds of CPSM-managed CICS regions and multiple MQ queue managers in Queue Sharing Groups.
MQ Distributed
Knowledge of MQ Distributed concepts including clustering, load balancing, RDQM concepts, installation standards, replay/recovery and performance analysis.
Mainframe Cybersecurity & RACF
Experience in mainframe cybersecurity engineering across z/OS environments, focused on security baseline maintenance, implementation and compliance. Skills include RACF, ACF2, security profiles, intrusion prevention, detection, alerting, recovery and secure platform standards. Certified in Advanced RACF Administration and ES88 Exploiting the Advanced Features of RACF.
Sysplex & Automation
Proficiency in Parallel Sysplex, coupling facility, GDPS Metro/Metro Link, Ansible, OMEGAMON, SYSVIEW, NetView, and IWS. Experience with OPSMVS Tools and Automation.
z/VM Administration
Operational support across z/VM environments including console monitoring, elementary z/VM administration and data manipulation.
DB2 & IMS Operations
Exposure to DB2 operations and IMS DB issues through operational support roles, including IMS DB troubleshooting and IMS Operations skill transfer.
TCP/IP on z/OS & Network Basics
Training and practical exposure to TCP/IP on z/OS Security and NW2 Network Basics, supporting secure network configurations on mainframe platforms.
AIX Administration
Foundational knowledge of AIX 5L Basics and AIX 5L System Administration and Implementation through formal training courses.
Expertise in z/OS system programming and administration, covering JES2, JCL, ISPF, SDSF, SMP/E, IPL, WLM, APF, HCD/IODF, HMC, SMF, and IPCS. Extensive experience in maintenance, security, performance tuning, health checks and operational support across large banking and enterprise environments.
MQ for z/OS Administration & Engineering
Deep knowledge of MQ for z/OS including QSG, shared queues, CF structures, SMDS, structure backup, certificates, CHLAUTH/CONNAUTH, logging/recovery, page set sizing, pub/sub, performance and resilience tuning. Hands-on experience designing and delivering Ansible-driven MQ upgrade solutions across multiple environments.
CICS Administration & Performance Tuning
Comprehensive CICS administration on z/OS, including installation/customization, SMP/E, DFHISTAR, RDO/CPSM, CSD/BAS, CICS-MQ connectivity, TCP/IP services, CICSPlex SM, MRO, monitoring and performance tuning. Supported hundreds of CPSM-managed CICS regions and multiple MQ queue managers in Queue Sharing Groups.
MQ Distributed
Knowledge of MQ Distributed concepts including clustering, load balancing, RDQM concepts, installation standards, replay/recovery and performance analysis.
Mainframe Cybersecurity & RACF
Experience in mainframe cybersecurity engineering across z/OS environments, focused on security baseline maintenance, implementation and compliance. Skills include RACF, ACF2, security profiles, intrusion prevention, detection, alerting, recovery and secure platform standards. Certified in Advanced RACF Administration and ES88 Exploiting the Advanced Features of RACF.
Sysplex & Automation
Proficiency in Parallel Sysplex, coupling facility, GDPS Metro/Metro Link, Ansible, OMEGAMON, SYSVIEW, NetView, and IWS. Experience with OPSMVS Tools and Automation.
z/VM Administration
Operational support across z/VM environments including console monitoring, elementary z/VM administration and data manipulation.
DB2 & IMS Operations
Exposure to DB2 operations and IMS DB issues through operational support roles, including IMS DB troubleshooting and IMS Operations skill transfer.
TCP/IP on z/OS & Network Basics
Training and practical exposure to TCP/IP on z/OS Security and NW2 Network Basics, supporting secure network configurations on mainframe platforms.
AIX Administration
Foundational knowledge of AIX 5L Basics and AIX 5L System Administration and Implementation through formal training courses.
Languages
EnglishFluentFrenchGoodItalianBasic knowledgeRomanianNative speakerSpanishFluent
Project history
MQ on z/OS system programming and administration in a large banking environment, covering maintenance, security, performance tuning, health checks and operational support. Responsible for supporting secure, stable and reliable middleware services across business-critical systems.
MQ systems programming across z/OS environments, focused on upgrade automation, rollout planning and platform maintenance. Designed and delivered Ansible-driven MQ and CICS upgrade solutions to standardize, automate and simplify upgrade activities across multiple environments.
Mainframe cybersecurity engineering across z/OS environments, focused on security baseline maintenance, implementation and compliance. Supported intrusion prevention, detection, alerting, recovery and secure platform standards.