Senior Mainframe Administrator

Publication Date:  Oct 7, 2025
Ref. No:  526439
Location: 

Wroclaw, PL

About Atos Group

 

Atos Group is a global leader in digital transformation with c. 70,000 employees and annual revenue of c. € 10 billion, operating in 67 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high-performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos is a SE (Societas Europaea) and listed on Euronext Paris.

 

The purpose of Atos is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.

Your job in a nutshell:

You will join a team supporting large scale Mainframe platform. The position requires an experienced specialist with at least 5 years of experience supporting the Mainframe Network environment. Responsibilities include configuring and maintaining the integrity and data, IP security of the Mainframe's host communication systems and associated program products. 

 

What will you be doing:

  • managing complex production plans, 
  • creating production manuals, 
  • implementing changes, 
  • analyzing and debugging current configuration, 
  • handling incidents during work hours and also during on-call support 24x7
  • providing technical support for customer, 
  • pro-actively signaling system needs for updates or optimization, 
  • resolving assigned problems in scheduled time frames, 
  • actively participating in weekly team meetings.

Requirements:

  • University degree in Computer Science, 
  • At least 5 years of experience as IBM Mainframe specialist (zSeries) with focus on network technologies,
  • Configure, debug and maintain TCPIP and VTAM subsystems configurations, 
  • Knowledge of all products using SNA & IP (DB2, CICS, TSO/ISPF, Netview, Connect:Direct, JES2), 
  • Configure and implement AT-TLS rules, 
  • Configure and implement IPSEC policies, 
  • Secure Encrypted data transfers (NDM, SFTP and FTP/TLS), 
  • Tcpip trace analysis – IP, Socket, OSA adapter, SNA, EE, 
  • Very good understanding of network related technologies (routing, protocols, IPv4, IPv6, etc) 
  • Very good written and verbal English skills,
  • Ability to work as a part of the team, 
  • Methodical approach to work,  
  • Excellent analytical skills, 
  • Stress resistant and problem-solving capabilities in case of emergency situations, 
  • Ability to deal with multi-task issues, 
  • Flexibility to be part of standby pool

Rewards and benefits:

  • Wellbeing programs & work-life balance - integration and passion sharing events,
  • Private medical and dental care,
  • Benefits platform – shopping, cinema, sport etc.,
  • Co-funding of sport activities, e.g. Multisport & OK system cards, b-active program,
  • Courses and certifications e.g. Google Cloud, AWS, ITIL,
  • Conferences and Expert Communities,
  • Gift packages for special occasions: Easter, Christmas, Children’s Day,
  • Appreciation for seniority: additional days off, Atos Jubilee gifts,
  • Charity and eco initiatives,

*Your benefits could vary depending on employment contract type
 

Please, attach your CV in English

 

If you have any questions, please contact our recruiter: Daria Sadowska

 

We Are Open to Hiring People with Disabilities
At our company, we believe that diversity and inclusivity are key to our success. Therefore, we are pleased to announce that we encourage hiring people with disabilities. We value the unique talents and perspectives that each person brings to our team. We provide support and workplace accommodations to ensure that everyone can fully realize their potential. Join us and let’s create an inspiring workplace together!

 

The company's procedure for internal reporting by whistleblowers under the Law of June 14, 2024. on the protection of whistleblowers (Journal of Laws of 2024, item 928) is available HERE (click to see the document)