Csaba Marjovszky

• Contributed to Europe's largest space project as a member of the Galileo satellite system's core network team • Performed integration and verification of complex infrastructures and new network elements. • Utilized tools such as Firewalls, IDS, switches, routers, VMWare, ESXi, Vsphere, Veeam, RHEL Linux, and Jira

• Conducted GDPR audits for ~ 20 institutions and councils • Served as Data Protection Officer (DPO) for 8 councils • Official Hungarian DPO Registration Number: E-001894/2019/D001

• Provided IT security consultancy services • Managed vulnerability management programs using SIEM tools like Qualys • Conducted vulnerability tests on approximately 4,000 servers globally • Implemented security controls and processes in accordance with the MITRE ATT&CK framework.

• Performed vulnerability assessments, penetration testing, network analysis, and discovery. • Employed tools such as Wireshark, OSINT tools, Linux, SAST, DAST, Burp Suite, ZAP Proxy, Metasploit, and Nessus

• Managed manufacturing and product transitions in the World-Wide Manufacturing group. • Led local product technical initiatives and continuous improvements at manufacturing facilities. • Coordinated new product introductions (NPI) and cross-product issues throughout product life cycles. • Collaborated with the Contract Manufacturer’s project team (Jabil Circuit) across various departments • Supervised and supported a team of 7 members • Participated in Service Design, Capacity Planning, Service Transition, Change Management, and Service Operation following ITIL practices. • Led a workcell transition project with a budget of approximately 1 billion HUF ( ~ 2.5 M Euro) • Drove failure analysis, corrective actions, access management, asset management, and cost reduction efforts. • Tools used include Linux, Cisco Routers & Switches, Nessus, and Wireshark

Made IMS system integration work for Deutsche Telekom. •Integrated supplementary services provided by Application Servers on the Ericsson IMS platform. •Developed detailed execution steps and system behaviors for various use cases. • Tools used include Linux, Wireshark, OpenSIPS, SIPp, Cisco

• Supervised a team of Huawei experts during IMS platform upgrades • Created and executed acceptance and integration test cases for IMS functionalities. • Integrated application servers (IBM WebSphere and Oracle WebLogic) with the IMS core. • Demonstrated Instant Messaging and Presence services over the IMS platform using OpenSER/OpenSIPS and Asterisk. • Served as Technical Supervisor and Project Manager for IMS mobile client software development. • Assisted in the planned acquisition of Slovenian Telekom, focusing on CAPEX / OPEX calculations. • Organized a 50+ member Friendly User Test on the IMS platform. • Award: Received recognition from the CEO on World Telecommunication Day for developing Instant Messaging and Presence services over the IMS platform. • Tools used include Linux, Windows, MS Project, Cisco Routers & Switches, Nagios, Wireshark, OpenSER

• Designed electronics and PCB layouts ensuring EMC compliance • Developed embedded systems using PIC microcontrollers and DSP algorithms, filters • Employed tools like MATLAB, Simulink, and various MPLAB tools • Tested, wrote, and debugged embedded C code