Senior System Engineer

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40670 Meerbusch


IT-Experte mit nachgewiesenem Erfolg in Management, Administration, Betrieb , Planung, IT Security Baselining und Implementierung von rechenzentrumsbasierten Anwendungen und Diensten.

Ich biete

IT, Entwicklung
  • Red Hat Enterprise Linux (RHEL)
  • IT Sicherheit (allg.)
  • PostgreSQL
  • Datawarehouse / DWH
  • VMware vCenter
  • Migration
  • Active Directory
  • IT Service Management (ITSM)
  • Incident Management
  • Oracle Database

Projekt‐ & Berufserfahrung

Implementation, knowledge transfer and planning of RedHat IdM and Ansible Tower
Federal Office of Agriculture and Food (BLE), Bonn
8/2017 – 1/2018 (6 Monate)
Öffentliche Verwaltung

8/2017 – 1/2018


Setting up RedHat IdM (Identity Management) platform and establishing trust relationship to BLEs Active Directory service
Developing Ansible Roles and Playbooks to meet BLEs specifications.
Mentoring of BLEs staff on Ansible and Ansible role deveopment principles

Eingesetzte Qualifikationen

Red Hat Enterprise Linux (RHEL)

Interim Management Open Systems Engineering / Infrastructure - Linux
Athene Lebensversicherung AG, Wiesbaden
2/2017 – 10/2017 (9 Monate)

2/2017 – 10/2017


Taking leading role for linux infrastructure team during AD and DNS domain migration
Integration of Linux systems in AD authentication
Mentoring of team members
Knowledge transfer for the topics ACL, SSH, SFTP, certificates, PKI, Git, GitLab and systemd
Working on and implementing automatic deployment concepts
Optimization and hardening of Linux based CIFS and NFS servers
Support on ORACLE RDBMS and ASM setups
Supporting and carrying out day to day system administration tasks (Linux, VMWare, Windows)
Planning and designing an Active Directory-based role and authentication model for LINUX (RHEL) systems
Automation of day-to-day system administration tasks with Ansible and Python/Shell scripting
Creating extensible documentation with GitLab markdown

Eingesetzte Qualifikationen

PostgreSQL, Oracle Database, Incident Management, Red Hat Enterprise Linux (RHEL), IT Service Management (ITSM), Active Directory, Migration, VMware vCenter

Integration Manager
CACEIS Bank, München
7/2016 – 12/2016 (6 Monate)

7/2016 – 12/2016


Participation in infrastructure team, personal responsibility and lead for upgrading a technical software installation and a DC move (including changing providers) of a complex Java application (EJB / Websphere Application Server, ESB
Software AG webMethods)

Organization and support of interface move (ESB) and parallel operation of the legacy application and new application
a. Moving of WebSphere MQ and File Transfer Interface
b. Organization of the system setup in new provider DC
c. Organization of firewall changes, etc
Creation of system documentation
a. Installation instructions
b. Operator instructions / operating concepts
c. Security concepts
d. SLAs with the new provider
Support for setting up operating procedures (among other monitoring)

Eingesetzte Qualifikationen

Netzwerk-Sicherheit, SSL / TLS, Projektleitung / Teamleitung (IT), SSH (Secure Shell), WebSphere MQ

Senior Database Architect
Travelex, London
5/2016 – 7/2016 (3 Monate)

5/2016 – 7/2016


Interfacing application developers to ensure correct design principles are maintained and implemented as part of the application deployment process
Provide day to day database support (PostgreSQL) and database administration for cloud operated databases
Working with systems architects and devops to minimise ops overheads
Zusammenarbeit mit Compliance and Risk Team um die Datenschutzrichtlinien entsprechend der Unternehmens- und gesetzlichen Bestimmungen entsprechend sicherzustellen
Optimierung des Datenbankdesigns und dessen Impementierung
Problemanalyse und Datenbanktuning
Design und Tuning analytischer Datenbankabfragen
Datenbank Performance Tuning
Sicherstellung der Datenintegritat
Bereitstellung einer effizienten Datenbankstrukur (Ansible, Docker, Amazon Cloud services)

Eingesetzte Qualifikationen


Application Manager / Process Operations Management
DB Netz AG, Hannover
5/2015 – 4/2016 (1 Jahr)

5/2015 – 4/2016


- Operation of railway-specific applications (batches, processes, systems) and infrastructure
- Monitoring and operation of applications for front and back end systems
- Work on and counselling in system, process/batch and application analysis
- 3rd level support for all involved applications and operating systems
- Management and resolution of escalated trouble tickets
- Inter-relationship management for individual internal organizational units

Eingesetzte Qualifikationen

Red Hat Enterprise Linux (RHEL)

Database Administration for EnterpriseDB Corp. at ABN AMRO Clearing Bank N.V. Lo
EnterpriseDB Corp, London
5/2014 – 3/2015 (11 Monate)

5/2014 – 3/2015


- Support and administration of EnteriseDB Postgres Plus Advance Server (PPAS) product line
- Close work with the architects office on creating the new standard operation environment for
Postgres based services:
- Lifecycle management for databases and database servers
- Planning future HA-cluster layout based on RHEL 7 (RHCS) and Postgres 9.4
- Sizing of future database instances based on prior and current performance requirements
- Advising on hardware and software lifecycle management
- Planning for future VM-based (IaaS/SaaS) and automated database provisioning
- Creation and presentation of system utilization forecasts
- Maintainance and tunining of two internal Datawarehouses (accessed by Pentaho BI and DI)
- Close support on Pentaho BI and DI builds for all database / Hibernate related issues
- Supporting application development on various ORACLE DBA tasks
- Improving system baselining and system standardization
- Performance tuning of PostgreSQL database instances
- Represent EnterpriseDB on site
- Advising on usage on JPA and Hibernate technologies for new and current portal systems
- Single point of contact for all PostgreSQL related questions
- RDBMS performance monitoring and auditing
- Set up and configuration of PEM instances for UAT and PROD environments
- Refining and implementation of security baselines for PostgreSQL instances currently in pro-
duction use according to the lastest regulatory requirements
- Set up autogeneration of workload and resource utilization reports
- Monitoring system performance and tuning of various database instances with instance sizes
up to 10 TB
- Extending the level of unattended system operation with shell and PL/SQL scripts
- Planning system upgrades and extensions
- Migration of historical data from DB2 (iSeries) to PostgreSQL including conversion and
transformation of data
- Data needed to be sanitized
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Curriculum Vitae
- To reduce storage requirements, a columnar storage solution for Postgres (cstore) was
- Carrying out day to day database administration tasks

Eingesetzte Qualifikationen

Datawarehouse / DWH, Oracle (allg.), PostgreSQL, RDB / RDBMS, Datenbankadministration, DB2, Hardware Entwicklung, IT Sicherheit (allg.), Red Hat Enterprise Linux (RHEL), Qualitätsmanagement / QS / QA (IT), SAP IS-RE, PL/SQL, SAAS, Shell (CSH), Hibernate (Java)

Technical Advisor, Architect
Deutsche Börse AG, Eschborn
8/2010 – 5/2014 (3 Jahre, 10 Monate)

8/2010 – 5/2014


- Conception, implementation and deployment of a file transfer solution
- Planning, conduct and documentation of high availability and load tests of different RDBMS,
write on whitepapers for future strategy decisions
- Write on and implementation of security concepts
- Planning and conducting performance, system and technical tests for DBAG's New Clearing
Architecture (NCA)
- Write on a desaster recovery plan for Eurex New Clearing Architecture to fulfil latest regulatory

Technical Test New Clearing Architecture
- Overall test conception and organization in classic and agile development models
- Extension of an automatic test tool chain to the Eurex Clearing derivative systems
- Planning and conducting the execution of automated test scenarios
Market analysis RDBMS
- Selection of a subset of highly available RDBMS-variants suitable for strategic adoption of
the new common RDBMS of Deutschen Börse AG
- Definition, deployment, programming, test and analysis of highly available database systems.
- Write on documentation and testing scenarios
- Porting of a J2EE based trading platform to the previously selected RDBMS
- Porting, adaption, enhancement and tuning of relational data models
- Conception and delivery of infrastructure services for conducting the de ned HA and load
- Deployment of a cluster file system (Gluster) as central storage solution
- Documentation of test setup and test results
- Installation, configuration and documentation of the test applications used (J2EE based)
- Write on whitepapers and presentations
- Write on strategy papers
- Migration, configuration and maintenance of the develompent tools used internally during the
tests (bugzilla, jamwiki, svn server)

Data exchange/ Filetransfer solution "Common Report Engine"
- Write on concepts, definition of security and operating concepts. Deployment of the testing
environment, coducting of basic functionality checks and documentation of test results.
- Installation support for the production environment (Red Hat Enterprise Linux, Red Hat
- Definition and documentation of the interfaces involved to allow the apllication development
teams to connect to Common Report Engine (Partner systems are OpenVMS Backend and
- A suffcient system security and access policy has been deployed in conjunction with GIS
(Group Information Security), deployment of appropriate security baselines
- Packeting of the delivered administration and configuration shell scripts (RedHat packages)
- Write on a system operating manual.
- Handover to system operating and support during the transitional phase

Security concept Global Trading Solution
- Development of a security concept for the Global Trading Solution (GTS Web GUI)

Eingesetzte Qualifikationen

RDB / RDBMS, IT Sicherheit (allg.), Informationssicherheit, Red Hat Enterprise Linux (RHEL), Agile Entwicklung, Testing (IT), Shell (CSH), Apache Subversion (SVN), J2EE (Java EE)

Persönliche Daten

  • Deutsch (Muttersprache)
  • Englisch (Fließend)
  • Europäische Union
23 Jahre und 11 Monate (seit 07/1995)


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