Senior Mainframe Administrator

Who we are. We are a team of passionate experts with a clear ambition: applying digital technology to advance what matters for our clients and society. Together we create reliable and responsive digital foundations for the world's businesses, institutions, and communities. Learn more on Advancing what matters Are you ready to embark on a dynamic journey at the forefront of technology, where innovation meets legacy systems? We are seeking a skilled and motivated Mainframe Network Administrator to be an integral part of our passionate team. 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 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) Join our phenomenal tech defenders' team to build a safer digital world together Learn more about us At Atos, we embrace diversity as the ultimate engine of ingenuity for our clients, and we constantly strive to create a culture where people feel supported and encouraged. Read more about our commitment here . Whether it is fighting climate change, promoting digital inclusion, or ensuring trust in data management – tech for good sits at the core of our identity. With numerous global recognitions for our ESG practices, we are committed to building a better future for all by harnessing the power of technology. Learn more here