IBMz Network Engineer

NTT America, Inc.; Madrid; Presencial; EUR 70.000 - 100.000; Jornada completa

Descripción de la vacante

NTT DATA in Madrid is seeking a seasoned z/OS Systems Specialist to join a team supporting a large-scale Mainframe Network environment. You will configure and maintain the host communication subsystems, ensuring data/IP security and high availability.

You will work with IBM mainframe networks, VTAM, IPsec, TLS/SSL, and security policies; participate in 24x7 support rotation and collaborate with cross-functional teams across applications and operations.

Formación

• Experience in administering z/OS systems and mainframe networks.
• Strong understanding of security protocols (IPSec, TLS/SSL) and certificate management.
• Ability to troubleshoot complex network issues in a z/OS environment.

Responsabilidades

• Support IBM mainframe networks and transmissions products and infrastructure.
• Participate in 24x7 support rotation.
• Configure and manage VTAM/OSPF/IP routing updates and security policies.
• Manage OSA Adapters and Enterprise Extenders integration.
• Perform VTAM PU/LU updates and network trace/debug analysis.
• Communicate with staff across technical and operations teams.

Conocimientos

z/OS

Mainframe networking

TCP/IP

IPSec TLS

VTAM

NetMaster

TM/SS

Herramientas

NetMaster

TUBES

Supersession

Descripción del empleo

Make an impact with NTT DATA

Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion – it’s a place where you can grow, belong and thrive.

Your day at NTT DATA

In this role you will be joining a team of technical professionals supporting a large-scale z/OS systems platform. This position requires an experienced systems programmer supporting the z/OS Mainframe Network environment. Responsibilities include configuring and maintaining the integrity and data/IP security of the Mainframe's host communication subsystems and associated program products.

Your responsibilities will include:

• Being part of a multi-functional team, supporting IBM mainframe networks and transmissions products and infrastructure.


• Participation in support rota providing 24x7 cover.


• Perform TCPIP Port Reserves (Additions, Deletions, Changes) Perform VTAM updates (Additions, Deletions, Changes)


• Manage OSA Adapters in a complex mainframe environment


• Perform VTAM PU/LU updates (Additions, Deletions, Changes) including Enterprise Extenders (EE)


• Implement AT-TLS rules (digital certificate management). Configure and manage IPSEC policies (permit/deny rules, VPN- ipsec tunnels)


• Trace, Debug and Error Analysis


• Communicate regularly with technical, applications and operational staff to ensure Network connectivity and security (may involve some after hours and weekend work)

The ideal candidate for this role will have the below experience and qualifications:

• Experience in administering file transmissions products such as Connect:Direct and FTP, or alternatively good experience as a user of these products.


• Knowledge of z/OS and z/OS utilities.


• Understanding of z/OS networking services, structure and related software and protocols.


• Understanding of network security disciplines (IPSec, TLS/SSL, certificates, etc) and how they relate to file transmission.


• Experience of problem management from initial diagnosis through to resolution.


• Understanding of the Change Management process.


• Ability to customize and manage secure SNA and TCP/IP networks under z/OS.


• Knowledge of mainframe network management tools, e.g. NetMaster, and multi-session manager products such as TUBES and Supersession.


• Experience of managing mainframe printing products.


• General z/OS systems programming experience.


• Knowledge of System z hardware including the OSA-Express network cards.


• Excellent problem-solving and analytical skills


• Good communication, teamwork and negotiation skills


• Familiarity with the Cisco Network Solutions


• The ability to work to tight deadlines under pressure


• Good organisational skills


• Flexibility and adaptability


• The ability to create and maintain strong working relationships with colleagues and customers


• Business awareness and understanding of business requirements of IT


• A willingness to keep up to date with developments in new technology


• An understanding of information legislation, such as the Data Protection Act.


• Experience of working as a z/OS Systems Specialist in the IT industry.

About NTT DATA

NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune

Global 100. We are committed to accelerating client success and positively impacting society through

responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with

unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and

application services. Our consulting and industry solutions help organizations and society move

confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more

than 70 countries. We also offer clients access to a robust ecosystem of innovation centers as well as

established and start-up partners. NTT DATA is part of NTT Group, which invests over $3 billion each

year in R&D.

Equal Opportunity Employer

NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us.

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