Mainframe Network & Security Specialist (24x7)

HSBC Holdings plc; Kraków; On-site; PLN 186,000 - 279,000; Full time

Benefits offered by this job

Private medical care

Life insurance

Multisport card

Home office reimbursement

Job summary

HSBC is seeking a skilled mainframe network support specialist to join a team maintaining a large-scale z/OS system platform. You will configure and maintain security and data integrity for mainframe host communications subsystems, with involvement in a 24x7 support rota.

You will handle VTAM, IPsec/TLS, and file transmission tooling, collaborating with application and operations teams to ensure reliable connectivity and security across IBM mainframe networks.

Qualifications

• Demonstrable experience supporting the z/OS mainframe network environment and general z/OS systems programming.
• Knowledge of z/OS and z/OS utilities.
• Understanding of z/OS networking services structure related software and protocols.
• Experience administering file transmission products such as Connect:Direct and FTP or strong experience as a user of these products.
• Understanding of network security disciplines including IPSec TLS and SSL and certificates and how they relate to file transmission.
• Experience in problem management from initial diagnosis through to resolution.
• Understanding of the Change Management process.
• Knowledge of mainframe network management tools such as NetMaster and multi-session manager products such as TUBES and Supersession.

Responsibilities

• Support IBM mainframe networks and transmissions products and infrastructure as part of a multi-functional team.
• Participate in a support rota providing 24x7 cover.
• Perform TCPIP port reserves additions deletions and changes and complete VTAM updates additions deletions and changes.
• Manage OSA adapters in a complex mainframe environment including OSA-Express network cards.
• Perform VTAM PU and LU updates additions deletions and changes including Enterprise Extenders EE.
• Implement AT-TLS rules including digital certificate management and configure IPSEC policies such as permit and deny rules and VPN ipsec tunnels.
• Carry out trace debug and error analysis and manage problems from initial diagnosis through to resolution
• Communicate with technical applications and operational teams to ensure network connectivity and security including some after hours and weekend work.

Skills

z/OS mainframe

Network engineering

Security policies

TCP/IP

VTAM

IPSec TLS SSL

Change Management

NetMaster

TUBES

Supersession

Education

Knowledge of z/OS utilities

Tools

Connect:Direct

FTP

Job description

HSBC is seeking a skilled mainframe network support specialist to join a team maintaining a large-scale z/OS system platform. You will configure and maintain security and data integrity for mainframe host communications subsystems, with involvement in a 24x7 support rota.

You will handle VTAM, IPsec/TLS, and file transmission tooling, collaborating with application and operations teams to ensure reliable connectivity and security across IBM mainframe networks.