Jun 14 – 18, 2021
Online event
Europe/Zurich timezone


Sebastian Lopienski | CERN


Sebastian Lopienski is director of the CERN School of Computing (CSC).

Sebastian also serves as CERN's deputy Computer Security Officer. He works on security strategy and policies; offers internal consultancy and audit services; develops and maintains security tools for vulnerability assessment and intrusion detection; provides training and awareness raising; and does incident investigation and response.

During his work at CERN since 2001, Sebastian has had various assignments, including designing and developing software to manage and support services hosted in the CERN Computer Centre; providing Central CVS Service for software projects at CERN; and development of applications for accelerator controls in Java. He graduated from the University of Warsaw (MSc in Computer Science) in 2002, and earned an MBA degree at the Enterprise Administration Institute in Aix-en-Provence in 2010.

His professional interests include software and network security, distributed systems, and Web and mobile technologies. In his free time, he enjoys sailing, kitesurfing, skiing and traveling.


Joelma Tolomeo | CERN


After being graduated on Accounting from the Universidade Catholica de Pernambuco (Brazil), Joelma was in charge of the accounting section for the Admed (Brazil insurance company).

In 2001 she started at CERN at the Finance department where she worked during 9 years in different financial areas, before joining the IT department.

Among several assignments Joelma has in the IT department, one of her responsibilities is the financial management for the recruitment process of Fellows and Associated Members of the personnel, she is the financial Officer for the European projects in the IT department (11 European projects in 2017) and she has the IT Deputy Department Administrative Officer role. Interested in presenting the Organization on several languages (French, Portuguese, English, Italian) Joelma is a CERN official guide and she participates on divers CERN open events: "Researchers’ Night at CERN", "Automnales", "Open days" and others.


Jarek Polok | CERN

Technical Manager

Jarek is member of CERN Computer Center Operations Team, working on Data Center Infrastructure Management system implementation.

He first joined CERN in 1994 as a summer student then returned as technical student then fellow and as a staff member.

Jarek has been working in the past on many projects including telephone callback system, mail server maintenance, LEP OPAL online experiment systems maintenance and user support, Network boot and installation service system, UNIX support, Drupal web content management system and Scientific Linux and CentOS development and support.