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.

Workplace type

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 integral team and accelerate your career with us.

Is innovation part of your DNA? Do you want to enable a connected future for people, organizations, and society? Join our growing global NTT family and you’ll be part of one, leading technology services provider. Together, we help our people, clients, and communities do great things with technology to create a more secure and connected future. We employ 40,000 people across 57 countries. By bringing together the world’s best technology companies and emerging innovators, we work together to deliver sustainable outcomes to businesses and the world. Innovation is part of our DNA. We believe it’s key to what makes us different. So, we strive to move forward, challenge the status quo, and drive excellence through the technologies we integrate and the services we deliver around the world. The result is connected cities, connected factories, connected healthcare, connected agriculture, connected conservation, connected mobility, and connected sport. Together we enable the connected future. You’ll be joining a global employer that is committed to attracting, growing and keeping the best talent. A place where you will be at the heart of our success!

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📌 IBMz Network Engineer (Madrid)
🏢 Ntt
📍 Madrid