Marko Oršolić-System Administrator in a 6-person Team
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Experience
System Administrator in a 6-person Team
FITS
- System administration of FreeBSD 11, 12 and 13.1 in a secure cloud software solution
- Administration of proxy servers for FITS and its clients, banks and state banks
- Administration of secure internet solutions
- Administration of secure mail solutions and mail gateways
- Administration of Apache 2.4 web servers
- Planning and maintenance of servers and network components in FNT Command
- Incident, change and ticket handling, especially troubleshooting network issues using Splunk and ARS
- Troubleshooting and log file analysis using Splunk Enterprise
- Monitoring with Nagios
- Ordering, provisioning and installation of certificates on Apache web servers, Nginx web servers and load balancers
- Hardware: HP ProLiant DL380 Gen 9 and 10, Cisco Catalyst
- Software: FreeBSD 11, 12 and 13.2, FNT Command, shell scripts, MySQL databases, ServiceNow, ARS, Splunk Enterprise 8.15
System Administrator in a 10-person Team for the 2024 European and Municipal Election
Komm One
- Participated in and moderated weekly status meetings
- Scheduled performance and load tests using Apache JMeter for the voting software from Vote IT
- Discussed technical changes to the Wahlmanager platform to improve overall system performance
- Deployed and ordered an Apache reverse proxy server as a load balancer
- Created a Visio chart to show the overall architecture of the Wahlmanager
- Requested changes from the vendor Vote IT
- Planned the rollout of new software releases
- Quality assurance
- Administration of Apache web servers and Tomcat applications
- Hardware: HP ProLiant DL380 Gen 10, Citrix NetScaler load balancers
- Software: SUSE Linux Enterprise Server, Ansible, shell scripts, Oracle 19c databases, Nagios monitoring software, Tomcat, Apache web server, Apache reverse proxy server
System Administrator in a 6-person Team
FITS
- System administration of FreeBSD 11, 12 and 13.1 in a secure cloud software solution
- Planning and technical execution of the data center relocation within Nuremberg
- Relocated about 30 servers from one data center to another in Nuremberg as part of the RZ Move project
- Administration of proxy servers for FITS and its clients, banks and state banks
- Administration of secure internet solutions
- Administration of secure mail solutions and mail gateways
- Administration of a DDoS solution in collaboration with Deutsche Telekom
- Administration of Apache 2.4 web servers
- Planning and maintenance of servers and network components in FNT Command
- Incident, change and ticket handling, especially troubleshooting network issues using Splunk and ARS
- Troubleshooting and log file analysis using Splunk Enterprise
- Monitoring with Nagios
- Ordering, provisioning and installation of certificates on Apache web servers, Nginx web servers and load balancers
- Hardware: HP ProLiant DL380 Gen 9 and 10, Cisco Catalyst
- Software: FreeBSD 11, 12 and 13.1, FNT Command, shell scripts, MySQL databases, ServiceNow, ARS, Splunk Enterprise 8.15, DDoS
System Administrator in a 12-person Team
Amadeus Data Processing GmbH
- System administration of RHEL 8.4
- Managing Ansible playbooks to automate installations
- Installing RHEL 8.5 servers for Oracle 19c disaster recovery
- Administration of applications for Amadeus
- Incident, change and ticket handling
- Patching RHEL 8 servers
- Administration of Veritas Cluster Servers and Veritas File System
- Administration of Oracle Data Guard
- Hardware: HP ProLiant DL380 Gen 10
- Software: RHEL 8.4, Veritas Infoscale 7.3, shell scripts, Ansible, Oracle 18c, Oracle 19c, Oracle Data Guard
Application Administrator in an 8-person Team
Daimler AG
- Application administration of a document management system based on Tomcat/Apache containers
- Managing Unix shell scripts
- Administration of applications for Daimler/Mercedes-Benz AG
- Incident, change and ticket handling
- Hardware: Oracle T7 server
- Software: Solaris 11.4, shell scripts, LDOMs, Tomcat, Oracle SQL
Application administrator in a 4-person team
Bank für Sozialwirtschaft
- Application administration of a financial application based on Tomcat/Apache
- Handling Unix/Linux shell scripts
- Administration of NetBackup 8.0 and 8.2
- Incident, change and ticket handling
- Hardware: Oracle Server T4, T7, IBM P-Series S922
- Software: Solaris 11.3, AIX 5.1, shell scripts, Solaris Cluster 4.2, Tomcat, NetBackup 8.2
Oracle Solaris administrator in a 30-person team
FITS
- Solaris administration
- Provisioning Oracle Solaris servers for Dekabank
- Handling Solaris shell scripts
- Administration of Solaris 10 and 11.3, Sun Cluster 4.2, Veritas Cluster Server 6.0, Solaris LDOMs and Solaris zones
- Incident, change and ticket handling
- Assisted in migrating Solaris servers from Stuttgart to Fellbach for Landesbank Baden-Württemberg
- Hardware: Oracle Server M3000, M4000, M5000, T5-2
- Software: Solaris 10, 11.3 and 11.4, shell scripts, Solaris Cluster 4.2, Veritas Cluster Server 6, Veritas File System 6.0, Veritas Volume Manager 6.0
Oracle Solaris administrator in a 3-person team
Commerzbank
- Handling service requests from the group mailbox
- Provisioning Oracle Solaris servers for Oracle database servers
- Handling Solaris shell scripts
- Administration of Solaris 10 and 11.2
- Incident, change and ticket handling
- Assisted in migrating Solaris servers from Stuttgart to Fellbach
- Hardware: Oracle Server X5-8
- Software: Solaris 11.3, OpenStack Cloud Solaris, shell scripts, IBM Tivoli Monitoring, HPSM, CoCa, Coria
Application administrator in a 6-person team
Techem AG
- Dispatching requests from the group mailbox
- Working with Assyst tickets according to ITIL guidelines
- Handling Linux shell scripts
- Job control and scheduling with Easy Schedule 3.1 and Control-M
- Starting and stopping applications
- Analyzing incidents, troubleshooting, log file analysis, 2nd-level support
- Monitoring jobs
- Escalation to production managers
- Managing SAP print jobs
- Controlling a CD burning robot
- Hardware: IBM P-Series
- Software: Red Hat Enterprise Linux 7, Windows Server 2013, VMware ESX, Oracle SQL, J2EE, shell scripts, Control-M, Nimsoft
Solaris administrator in a 4-person team
Berliner Sparkasse
- Dispatching requests from the group mailbox
- Working with SR Plus tickets according to ITIL guidelines
- Handling Solaris shell scripts
- Integrating Sparkasse systems into FI authorization management
- Starting and stopping applications
- Analyzing incidents, troubleshooting, log file analysis, 2nd-level support
- Monitoring production and test environments
- Monitoring backup jobs in Legato Networker
- Handling disks and disk groups in Veritas Volume Manager
- Running Solaris zones in Veritas Cluster Server
- Hardware: Sun M5000, T5120, M4000, T3
- Software: Oracle Solaris 10 and 11.3/11.4, Solaris zones, ZFS, Veritas Cluster Server, shell scripts, Tivoli Storage Manager
Application Administrator in a 6-person team
Techem AG
- Dispatching requests from the group mailbox
- Working with Assyst tickets according to ITIL guidelines
- Handling Linux shell scripts
- Job control and scheduling with Easy Schedule 3.1 and Control-M
- Starting and stopping applications
- Incident analysis, troubleshooting, log file analysis, 2nd-level support
- Monitoring jobs
- Escalation to production managers
- Managing SAP print jobs
- Operating a CD burning robot
- Hardware: IBM P-Series
- Software: Red Hat Enterprise Linux 7, Windows Server 2013, VMware ESX, Oracle SQL, J2EE, shell scripts, Control-M, Nimsoft
Storage Engineer in a 3-person team
Huawei
- Setting up, installing, and troubleshooting Huawei midrange storage
- Hardware: Huawei Storage V3 Series
- Software: Huawei OceanStor Storage Manager
Application Administrator in a 30-person team
T-Systems
- Dispatching service requests from the group mailbox
- Working with HPSM tickets according to ITIL guidelines
- Manual administration of CAS J2EE applications
- Handling Solaris shell scripts
- Starting and stopping applications and integrating them into the monitoring environment
- Incident analysis, troubleshooting, log file analysis, 2nd-level support
- Setting up users in the Active Directory server
- Managing groups and permissions on Microsoft RDP servers
- Hardware: HP blade server
- Software: Red Hat Linux 12, Windows Server 2013, VMware ESX, Oracle SQL, Compax AAX, CAS, truck toll software components, J2EE, shell scripts, UC4/Automic
Service Operations Analyst Incident & Service Request in a 12-person team
Deutsche Bank
- Dispatching service requests from the group mailbox
- Working with DB Symphony tickets according to ITIL guidelines
- Manual administration of the Coryx Private Port application
- Handling Solaris shell scripts and SQL database access
- Hardware: Oracle Server M4000
- Software: Solaris 10, Oracle SQL, Private Port from Coryx (formerly Reuters Portfolio Management), shell scripts
Oracle Onsite Engineer in a 7-person team
Finanz Informatik GmbH
- Operating a high-availability solution based on Symantec Veritas Foundation Suite 6.0 and Solaris Zones technology
- Installing Solaris 10 servers using the JumpStart method
- Supporting live upgrade of a pure Oracle Solaris 10 server environment of 160 servers
- Incident management, troubleshooting and change management
- Call coordination
- Independently developing technically detailed action plans for problem resolution in coordination with the customer and continuously verifying the actions
- Coordinating problem resolution
- Providing on-site support to the solution center and customer account teams during technical escalations
- Working with internal national and international escalation teams on escalated issues (3rd/4th level)
- Troubleshooting, analysis and diagnosis of issues
- Working with customer account teams
- Collaborating with REOS (Remote Enterprise Organization Services)
- Ensuring maximum availability and operation of customer systems through use and application of proactive information
- Service for high-end Oracle/Sun systems in the data center
- Recording the current configuration and continuously monitoring patches, FINs and FCOs with Oracle tools to assess system status
- Determining the need for action regarding patches, FINs and FCOs
- On-site patch management and bug fixes
- Hardware maintenance including FIN and FCO management and control
- Providing consulting services to increase system availability
- Supporting asset management of the Sun environment
- Installation support in compliance with Sun EIS standards
- Ensuring the Sun quality standard
- Supporting on-site spare parts
- Supporting system administration in acquiring and sharing Sun know-how
- Supporting the implementation of Oracle tools (OracleSolve, OSC)
- Collaborating with and supporting application vendors on Oracle system administration and management
- Setting up mechanisms for system availability
- Supporting and advising on Oracle system operations in the data center regarding patch and change management
- Supporting system administration in acquiring and sharing Oracle know-how
- Documenting and ensuring transparency of the Oracle system environment
- Documenting and ensuring transparency of customer- and system-specific additions and peculiarities
- Maintaining Oracle servers and their components in FNT Command
- Hardware: Oracle Server M3000 and M5000, Sun Fire 15k
- Software: Solaris 10, Veritas HA Foundation Suite 6.0, Veritas Volume Manager 6, Veritas Cluster Server 6.0, Lotus Notes, FNT Command C6000
Application Manager in a 3-person Team
First Data
- Monitoring, operating and troubleshooting a Unix server environment of 300 servers
- Working according to ITIL
- Incident management
- Change management
- Deploying and releasing Telecash applications together with the development teams
- Hardware: Oracle Server Sun Enterprise 420R, HP BladeCenter
- Software: AIX 6.1, Solaris 8 and 10, OpenSUSE 10.2, Apache Tomcat Web Server 7.0.0, Xymon Hobbit 4.3.4, Ingenico Download Server 4.3
Application Manager HUAWEI ngBSS in a 10-person Team
Atos Origin
- Operating in a 24/7 environment including on-call duty for E-Plus
- Checking, monitoring and ensuring stable operation of production applications that are relevant for business processes and SLAs
- Ensuring and monitoring the production applications
- Coordinating all activities for application availability, recoverability, performance and capacity
- 2nd and 3rd level support
- Initiating necessary recovery, restart and start-up procedures
- 24/7 on-call duty for the supported applications
- Continuous service improvement
- Performing routine system tasks based on Product Execution Plans (PEP)
- Configuring NGBSS and Mediation applications for the future E-Plus system landscape based on the Huawei platform
- Application management
- Incident management and problem management
- Monitoring root cause analysis
- Testing NGBSS, Mediation and partner billing (OAT, UAT, BAT)
- Delivering monitoring reports to management
- Running batch jobs
- Communicating with 1st level support and 3rd level support (Huawei/E-Plus)
- Working with USD (incidents, problems, defects)
- Error analysis and documentation together with the development team
- Hardware: IBM P-Series server, IBM DS8700 storage
- Software: AIX 7.1, Oracle 10 and 11, Apache Tomcat Web Server 2.0, IBM DS8700, Huawei NGBSS, Icare, CRM, ETL, BICP, Mediation, IBM HACMP 7.1 (High Availability Cluster Multi-Processing)
Participant
E-Plus
- Attended several in-house workshops and training sessions by Huawei on Huawei NGBSS, Huawei Mediation, Huawei BICP and Huawei PRM
System Administrator/Operator in a 6-person Team
Commerzbank
- Monitoring, operating and troubleshooting approximately 300 servers in the Commerzbank test environment for integrating Dresdner Bank customer data into the new Commerzbank environment
- Monitoring jobs on the test systems
- Hardware: Sun M8000, IBM P-Series
- Software: IBM ITM Monitoring 6.2, HP Service Center 2, COCA, ELCH, Sun Solaris 10, AIX 6.1, Red Hat Linux 6, ITIL, incident management using HP Service Center
Participant
EADS Defence
- Attended a four-day training on NetAct for Tetra in Ulm
- Attended a three-day training on storage virtualization with LSI in Berlin
Sun Solaris system administrator in a 10-person team
T-Systems
- Setup and operation of Sun Solaris systems
- Installing servers using Jumpstart server technology
- Planning support in preparation for installing new servers and applications for Deutsche Telekom
- Migrating Sun servers and storage to newer hardware from the same vendor
- 2nd level support and troubleshooting
- Handling incidents
- Processing changes and tasks
- Creating ZFS snapshots
- Creating Solaris containers
- Creating Solaris zones
- Operating Sun Cluster 3.0 to 3.2
- Operating Veritas Cluster Server 5.0
- Hardware: Sun Fire 480R, 490R, 15k, 25k, M4000, M5000, M8000, M9000, iSCSI, NAS filer, SAN storage
- Software: Veritas Cluster Server 5.0, VxVM 4.0-5.0, VxFS 4.0-5.0, Peregrine Service Center, Asset Center, ICIT, Datawarehouse, Business Intelligence, UC4, ZFS, Solaris zones
Oracle Solaris system administrator in a 30-person team
EADS Defence & Security
- Setting up two highly available data centers using Sun Solaris Cluster technologies
- Assisting with the installation of 140 Sun Solaris and Windows servers, six StorageTek 6540 storage units, and two StorageTek SL500 tape robots
- Assisting with the installation of Symantec NetBackup 6.5
- Operating Symantec NetBackup 6.5
- Setting up a large monitoring solution for IT and TETRA radio components using Micromuse Netcool
- Storage virtualization using LSI DPM8400
- Participating in planning and building two data centers at two sites, including coordinating external partners
- Hardware: Sun M5000, Sun V245, Sun X4200, Sun StorEdge 6540, SL500, Brocade 4900 FC switches, LSI DPM8400, BIG-IP load balancer
- Software: Solaris 10, Sun Cluster 3.2, Solaris Volume Manager 5.0, Veritas NetBackup 6.5, Netcool 4.0, web portal, BMC Remedy ITSM 7.0, Oracle 10gR2
Application administrator/tester in a 5-person team
T-Systems
- Testing and operating a service portal for Deutsche Telekom
- 2nd level support
- Troubleshooting a web portal for E-Services
- Creating and adapting about 1000 test cases
- Hardware: Sun Fire 490R
- Software: Liferay Portal 4.3.3, Tibco Portal Builder 4.5, JMS 1.1, Java 1.5, TestLink Test Director 1.0.4, MySQL 4.1, Apache Tomcat 6.0
Application manager in a 5-person team
T-Systems
- Managing a central inventory database for lines (PMA-ISEM)
- Operating the application
- Deployment and releases of the PMA-ISEM application
- Operating Apache Tomcat 6.0.0
- Log file analysis
- Maintenance
- Planning and installing new software releases
- Working according to ITIL
- Incident management
- Troubleshooting
- 2nd level support
- Applying updates and patches
- Log file analysis of import and export processes
- Hardware: Sun Fire 4900R, HDS storage
- Software: Oracle 10g, J2EE, Solaris 8, PMA-ISEM2, ODEI, XML, Java, Apache Tomcat 6.0
Participant
AS-Systeme and Oracle Educational Services
- Participated in Sun training courses on TCP/IP for Solaris 9, Veritas Volume Manager 4.0, and Sun Cluster 3.1 (three weeks in total)
Solaris System Administration
RWE-Trading
- 2nd level support
- Troubleshooting
- Daily backups using Legato Networker and Tivoli Storage Manager
- Patching Sun Solaris systems
- Documentation
- Supporting projects with external service providers
- Administration of Sun servers and T3 storage
- Hardware: Sun E420R, Sun Fire 480R and 490R, Sun Fire 6800, HDS 9960, EMC CX700, Storagetek SL500, FC tape drives, Brocade FC switches
- Software: Veritas Volume Manager 3.5, Sun Cluster 3.1 Update 3, Solaris 8 and 10, Legato Networker 7, Tivoli Storage Manager 5.3
Participant
Arxess
- Attended ITIL Foundation V2 training with successful certification
Operator in a 20-person team
T-Mobile International
- Operating and monitoring of the German and international T-Mobile network
- Monitoring of services (SMS, WAP, GPRS, MMS, WLAN, VPN)
- Monitoring of lines and network elements (BCS, BTS, etc.)
- Testing and setup of monitoring tools
- Attended several four-week training courses in GSM/GPRS/UMTS and GSM/GPRS monitoring
- Hardware: Intel machines, Windows NT 4, MSC, BSC, BTS, network elements
- Software: Ines, NetInfo, Metrica, Micromuse Netcool, Firehunter, Microsoft Office 97
Participant
T-Mobile International
- Attended a four-week training on GSM setup and monitoring tools
- Introduction to monitoring tools like Micromuse Netcool, Ines, NSPL, ISPL, Firehunter
Solaris Administrator Toll Collect
T-Systems
- Setting up and configuring servers using the Jumpstart server method
- Creating users and file systems
- Integrating file systems into the Sun Cluster
- Incident and change management using ARS Remedy 4.6
- Troubleshooting
- Creating and improving documentation
- Developing a new operations manual
- Writing shell scripts to install packages on Solaris servers
- Hardware: Sun Enterprise 250, 450, 4500, Sun Fire 280R, 480R, 880R, Sun Netra T1, Hitachi Direct Storage 9960, StorEdge S1
- Software: Sun Solaris 8, Sun Cluster 3.0, Veritas Volume Manager 3.20, Jumpstart, Sun Explorer, LDAP2DNS, Sysconf
Application Manager in a 20-person team
Vodafone Information Systems
- 1st-, 2nd- and 3rd-level support in a 24/7 shift operation
- Troubleshooting, fault analysis and restoration
- Repair of services after disruptions
- Collaboration on the creation of a knowledge database
- Creation and dispatch of a Sun Explorer for analysis
- Execution of test cases for type and field acceptance tests
- Trouble ticket management with ARS Remedy 4.6
- Hardware: Sun Fire 4800, 280R, 480R, and T3+ storage arrays
- Software: HP OpenView Internet Usage Manager 4.0, Sun Solaris 8, Sun Cluster 3.0 high availability solution, Veritas Volume Manager 3.22, Oracle Real Application Cluster, VIS realtime rating engine, AAA, HP OpenView ITO, Concord eHealth, TeMIP, Tomcat, Apache Webserver 2.0
Participant in trainings and workshops
Vodafone Information Systems
- Participation in trainings for the IP-Mediation project
- Configuration of the HP OpenView IUM software including analysis, troubleshooting and reporting
- Participation in Sun workshops on Admin I, TCP/IP, Veritas Volume Manager, Sun Cluster 3.0, T3+ storage array, Legato Networker
- Hardware/Software: HP OpenView Internet Usage Manager (IUM 4.0), HP OpenView Network Node Manager, Windows NT 4.0, Windows 2000, Intel-based PCs, Sun Ultra 10, various Sun storage arrays (D1000, A1000, A5100), Sun Fire 4800
Participant
Sun Educational Center
- Participation in the certification for Sun Solaris System Admin version 8
- Installation and configuration of Sun Solaris 8 on Sun Ultra systems
- System configuration and networking
- Working with English course materials and exams
- Hardware/Software: Sun Ultra 10, Sun Server 450, Solaris 8
Third-level Windows/Antivirus supporter in a 3-person team
Deutsche Bank subsidiary
- Testing and distribution of the latest antivirus signatures on Deutsche Bank's Windows servers
- 3rd-level support
- Administration of Norton 2000 for Corporate server landscape
- Hardware: Intel PC
- Software: Norton Antivirus 2000 Corporate Edition 7.03 and 7.50, Windows NT 4.0 Server and NT Workstation 4.0, Remcon PC-Duo
Operator in a 15-person team
Commerzbank IB
- Monitoring and troubleshooting jobs and applications on Solaris production servers
- 1st-level support in case of errors
- Escalation to the server or production managers
- Creation of shift handover reports
- Reporting
- Hardware: Sun SPARCstation and servers E4500, E6500, E10000
- Software: Microsoft Access 2000, Tivoli Service Desk 6.0, Tivoli Enterprise Console, Autosys, ELOG
Seminar Participant
BOV AG
- Attended training for the BOV Certified Networking Specialist with a focus on MCSE NT 4.0
- Performed exercises from the MOC courses
- Hardware/Software: Microsoft Windows NT 4.0, IIS 4.0, Exchange Server 5.5, Proxy Server 2.0
Industry Experience
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Experienced in Information Technology, Banking and Finance, Telecommunication, Energy, Government and Administration, and Aerospace and Defense.
Business Area Experience
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Experienced in Information Technology, Operations, Project Management, and Quality Assurance.
Summary
To join a company that can help me further develop my skills and expand my experience in the Linux/Unix server environment.
Skills
Operating Systems Client: All Microsoft Operating Systems From Windows 95 To Windows 10
Operating Systems Servers: Sun Solaris 8, 9, 10, 11; Red Hat Enterprise Linux 6.5; Microsoft Windows Nt 4.0; Microsoft Windows Server 2000/2003; Vmware Esx Server
Scripting Languages: Sql, Ksh, Sh, Bash
Networking/Communication: Tcp/Ip, Ssh, Ssl, Https, Ip Routing, Dhcp, Dns, Wins, Ras, Iis, Nis, Nis+, Nfs, Gsm, Umts, Gprs, Wlan
Databases: Microsoft Access From Xp To 2019; Ms Sql Server 2008; Oracle 8 To 16
Applications: All Microsoft Office Versions From Office 4.3 To Office 2019; Veritas Ha Foundation Suite 6.0; Ibm Tivoli Monitoring 6.2; Hp Openview Ium 4.0; Hp Openview Network Node Manager 6.30; Ibm Tivoli Storage Manager 5.3; Legato Networker 6.5; Liferay 4.0; Netcool 4.01 Itsm; Etts; Ars Remedy 4.3; Peregrine Servicecenter 6.1; Apache Tomcat 6.0.0 And 7.0.0; Apache Http Server 2.0; Huawei Ngbss; Huawei Mediation; Huawei Prm
Workstation Hardware: X86 Pcs And Notebooks, Ipads, Sun Sparcstations/Ultra/Blade/Sun Ray Thinclients
Server Hardware: Sun Enterprise 220r, 420r, 4500; Sun Fire 280r, 480r, 490r, 880, 1280r, 4800r, 4900r; M3000, M5000, V245, X4200; Oracle Server T5, T6, T7
Storage Hardware: Sun Storedge 2540, 6540 Including Cam Software, Lsi Dpm 8400
San Hardware: Brocade Fibre Channel Switches
Languages
Certifications & licenses
BOV Certified Networking Specialist
ITIL Foundation V2
MCSE NT 4
Sun Solaris Certified System Admin for Solaris 8 & 10
Statistics
Experience
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Qualifications
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