Felix S. - System Consultant / Consultant

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Grafing bei München, Germany

Experience

Jan 2023 - Present

2 years 8 months

System Consultant / Consultant

Viridium Gruppe

Optimizing operations and stabilizing system and application operations
Linux system administration with WebSphere Application Server and DB2 databases
Creating a concept to fix production errors in the ticket system based on an as-is analysis
Building, configuring, and deploying test environments according to the concept
Conducting error analysis and troubleshooting in WebSphere (Java) and MQ servers
Creating benchmarks to compare required performance with actual performance
Preparing releases and release updates
Technical documentation

Jan 2021 - Dec 2022

2 years

System Consultant / Consultant

Finanz Informatik Technologie Service

System administration of LINUX/UNIX systems
Handling customer requests around UNIX servers
Incident, problem, and change management following ITIL
Resolving issues at third- and second-level on the OS and server provisioning
Working in projects
Supporting applications and their infrastructure
Building a Kubernetes environment for ABACUS 360

Aug 2020 - Oct 2020

3 months

IAM Architect

Stadtwerke München

Designing a concept for a new identity management system based on One Identity
Mentoring on the steps needed for the migration

Jun 2019 - Mar 2020

10 months

System Consultant / Consultant

IDnow GmbH

Professional services
Developing custom client adjustments in Java and deploying in Kubernetes/Docker
Supporting IDnow clients with integration via REST APIs
Gathering client requirements and advising on API use
Creating client configurations, versioning, and deploying configs using GitHub and Jenkins
Querying client-specific data in the MySQL database

Feb 2019 - May 2019

4 months

System Consultant / Consultant

IS4IT GmbH / UniCredit Group / VTS

Migrating UniCredit Group internet platforms on Apache Webserver and Tomcat/JBOSS to new platforms
Setting up and configuring Apache HTTP Server and JBOSS on various RedHat Linux versions
Securing internet sites by hardening middleware
Advising the client on internet presence
Certificate management
Advising on high-availability and high-performance internet sites
Automating operational tasks

Oct 2018 - Dec 2018

3 months

System Consultant / Consultant

KOGIT GmbH / Deutsche Börse Group

Identity management with SailPoint IdentityIQ
Capturing requirements, specifying and implementing the leaver process
Implementing the leaver process in Java and BeanShell
Optimizing connection to LDAP and ForgeRock Directory Services

Jul 2013 - Jul 2018

5 years 1 month

Identity Management Architect

Oracle / European Central Bank

Functional responsibility for Identity Manager setup with connections to Active Directory, LDAP (Oracle Unified Directory - OUD), Oracle databases and Microsoft Exchange
Extending the web services interface to SAP in Java
Defining additional functions
Developing a Java connector for SCIM
Connecting Microsoft Exchange (2010 & 2016) to Oracle Waveset
Single sign-on integration with Windows desktop
Integrating installation with Kerberos for UNIX/Solaris
Administering installations on Glassfish and Oracle WebLogic
Analyzing and fixing errors and open tickets

Apr 2013 - Jun 2013

3 months

System Consultant / Consultant

Cellent / O2

New FN-LDAP directory server (OpenLDAP based)
Defining the LDAP schema
Specifying and implementing security requirements
Main contact for directory server users during migration
Writing Java sample code for password policy use
Documentation
Writing LDAP test scripts

Feb 2013 - Apr 2013

3 months

System Consultant / Consultant

iC Consult / ING DiBA

Extending an Oracle Waveset installation
Advising on Oracle Waveset IDM
Adding new Java modules to the system
Analyzing and fixing errors and open tickets
Implementing changes
System documentation
Configuring WebLogic environment and deploying adjustments

Jan 2011 - Dec 2012

2 years

System Consultant / Consultant

Allianz SE / Allianz Common Applications and Services GmbH

Administering the risk analysis infrastructure
Designing infrastructure on RedHat Linux
Writing scripts for RedHat Enterprise Linux
Administering application databases on Oracle 10.x and 11.x
Installing, configuring and setting up Risk Analysis Infrastructure components (server apps and JEE web apps)
Administering the full Algorithmics Algo Suite
Deploying and administering frontend web apps on WebSphere Application Server
Analyzing and implementing the ITSM for Solvency II setup
Server monitoring, system tuning, scripting, job scheduling
Handling incident, problem, and change management processes
Supporting the business unit

Sep 2010 - Mar 2013

2 years 7 months

Switzerland

System Consultant / Consultant

Kanton Aargau (Schweiz)

Supporting Sun Identity Manager (on a day rate)
Helping set up an SVN and NetBeans based dev environment for Sun Identity Manager
Setting up an SPML2 interface to provision eGovernment users and developing new workflows
Helping resolve issues in Identity Manager customizations
Connecting Microsoft Active Directory, Sun Directory Server, and various databases
Developing a Java interface

Sep 2010 - Dec 2010

4 months

System Consultant / Consultant

Fujitsu Services GmbH

Linux application migration
Analyzing existing applications in multiple data centers
Installing, configuring, and migrating applications to the new server landscape
Taking inventory of applications and updating the application overview
Analyzing data traffic and protocols between applications
Reviewing configs and needed changes for migration
Analyzing current infrastructure and dependencies
Developing a migration strategy
Defining acceptance criteria post-migration, aligning with the client
Scheduling migration dates
Performing test migrations
Defining a fallback strategy
Functional testing of test migrations
Migrating apps and adjusting Quest Vintela Authentication Service for AD integration
Migration support in the week after go-live

Nov 2009 - Jun 2010

8 months

System Consultant / Consultant

dwpBank (Deutsche WertpapierService Bank AG)

Implementing Sun Identity Manager extensions
Replacing Lotus Notes workflows with new ones in Sun Identity Manager
Developing Java modules to extend Identity Manager functionality
Supporting upgrade of existing Sun Identity Manager to version 8.1
Installing and configuring Glassfish Application Server
Integrating the new office desktop infrastructure with Identity Manager

Sep 2009 - Oct 2009

2 months

System Consultant / Consultant

DZ Bank

Upgrading Sun Identity Manager
Upgrading an existing Sun Identity Manager to the current version
Installing and configuring Oracle WebLogic in different environments
Adjusting Oracle database for Identity Manager needs
Adapting existing customizations to the new version
Cleaning up unused components

Apr 2009 - May 2010

1 year 2 months

System Consultant / Consultant

T-Systems

Architectural support for implementing an identity management solution
Helping develop the solution based on Sun Identity Manager
Reviewing architecture of the planned solution
Advising on technical details of the product
Developing a “sounds like” search for names

Jan 2009 - Apr 2009

4 months

System Consultant / Consultant

Rohde & Schwarz

Setting up an LDAP infrastructure and integrating with Sun Identity Manager
Supporting SAP HCM integration
Architecture, design, planning and installing Sun Java Directory Server
Integrating the new LDAP server with Sun Identity Manager
Designing the LDAP directory schema

Nov 2008 - Dec 2008

2 months

System Consultant / Consultant

Sun Microsystems GmbH

Support for Vodafone network planning pilot
Architectural advice on integrating EAI and web services with identity management and single sign-on
Setting up a proof of concept with OpenSSO

Oct 2008 - Oct 2008

1 month

System Consultant / Consultant

GfK

Supporting upgrade of LDAP directory server
Helping upgrade Sun Java System Directory Server to the current version and integrating with Solaris systems

Feb 2007 - Mar 2007

2 months

System Consultant / Consultant

Bosch-Rexroth

LDAP directory server migration
Migrating an LDAP server to a new version in production
Planning and coordinating all migration tasks
Advising client on better use of the directory server in their portal
Creating and implementing a backup strategy

Dec 2006 - Dec 2006

1 month

System Consultant / Consultant

Uni Erlangen

LDAP workshop for Solaris and Linux systems
Architecture workshop on using LDAP directory server for UNIX name services

Jul 2006 - Dec 2007

1 year 6 months

System Consultant / Consultant

Delta Lloyd

Identity management infrastructure
Advising, architecture and implementing an identity provisioning solution based on Sun Identity Manager and an Oracle database
Integrating HR system data into the identity management infrastructure
Integrating with existing enterprise SSO component
Reviewing existing apps and prioritizing integration
Helping integrate Java apps into an access management solution based on Sun Access Manager/Sun Directory Server
Connecting Microsoft Active Directory to Sun Identity Manager

Jun 2006 - Sep 2009

3 years 4 months

System Consultant / Consultant

msgGillardon AG / Finanz Informatik Technologie Service

UNIX system administration and LDAP introduction
Installing and administering systems for trading platforms and online banking for various banks; Solaris 8–10, Sun Cluster, Veritas Volume Manager, RedHat Enterprise Linux, RedHat Cluster and Satellite Server
Integrating systems into existing backup and monitoring infrastructure
Designing and implementing an LDAP server for UNIX (Linux, Solaris, AIX) user authentication and managing these users via Sun Identity Manager
Handling customer requests and tickets
Incident, problem and change management per ITIL
Supporting applications and their infrastructure

May 2006 - May 2006

1 month

System Consultant / Consultant

Delta Lloyd

Identity management infrastructure
Upgrading the environment and supporting development in creating a J2EE application

Mar 2006 - Present

19 years 6 months

System Consultant / Consultant

Freelance

Projects in identity and access management, single sign-on and LDAP directories
Developing Java modules
Developing and administering Java/J2EE applications on various application servers
Administering UNIX systems (Linux, Solaris, AIX) and applications
Migrating systems

Nov 2005 - Dec 2005

2 months

Consultant

T-Systems

T-COM ID
Advising on implementing a single sign-on solution for RechnungOnline
Developing Java login modules for an SSO solution based on SAML and Liberty Alliance
Extending LDAP directory schemas
Installing and configuring a web server with SSO policy agent

Sep 2005 - Oct 2005

2 months

Consultant

Delta Lloyd

Identity management infrastructure
Designing an architecture for an identity management solution with LDAP directory server, access management, SSO and provisioning
Installing and customizing the solution on Linux in workshops
Supporting software development in integrating a new J2EE app into the access management and SSO parts of the solution

May 2005 - Feb 2006

10 months

Consultant

Morse GmbH

Designing complex IT architectures based on Sun systems
Installing and configuring hardware and software, mainly Sun systems with Solaris and Linux
Choosing products, configuring, and creating technical offers for client projects
Supporting sales in client projects as technical advisor

Feb 2004 - Feb 2005

1 year 1 month

Service Account Manager

Sun Microsystems GmbH

Planning, coordinating and executing Sun hardware and software installation projects
Ensuring maximum availability of client systems through proactive services
Responsible for delivering reactive and proactive service to clients
Escalation management and personal client support to ensure top satisfaction
Focus on technologies and products:
Sun systems and Solaris 8,9, Sun Cluster 3.1
Veritas Volume Manager and Cluster
Sun/Hitachi Data Systems storage

Jan 2004 - Dec 2004

1 year

Service Account Manager

O2

Planning, coordinating and performing Sun hardware and software installations in various projects (Lotus Notes, Home Zone Management Cluster, DWH, Dealer Gateway, WAP Gateway, etc.)
Using products such as SunFire 15K/25K/6800, V440/V880/V890, V490, V40z, LX50, etc.
Sun StorEdge/HDS 9960/9980/9990, A3000/A5000
Solaris 8,9 with StorEdge SAN, Red Hat Linux Advanced Server 2.1
Solaris Jumpstart Kit
Sun Cluster 3.1
Veritas Volume Manager

Jan 2003 - Dec 2004

2 years

Pre-Sales Consultant

Deutsche Telekom

Pre-sales for a single sign-on solution
Supporting sales on a Liberty Alliance–based SSO solution for Deutsche Telekom divisions, including:
Presentations
Architecture advice and clarifying technical details for software deployment
Working with product management and development to meet client needs
Installing a test environment
Helping developers integrate into a custom Java application
Installing and benchmarking the product in proof of concept

Jan 2003 - Dec 2003

1 year

Pre-Sales Consultant

HypoVereinsbank

Pre-sales for an LDAP directory server project
Supporting sales in selling Sun Directory Server for authenticating users of a BEA WebLogic application, including:
Presentations
Designing a high-availability architecture with failover
Troubleshooting the installation

Jan 2003 - Dec 2003

1 year

Pre-Sales Consultant

T-Mobil

Pre-sales for a portal server project
Supporting sales in selling Sun Portal Server, including:
Presentations
Architecture advice and clarifying technical details for integrating identity, access management and SSO components

Jan 2001 - Dec 2001

1 year

Pre-Sales Consultant

Ision / Mercedes-Benz

Mercedes-Benz portal
Supporting professional services in troubleshooting a J2EE application server install, including:
Helping upgrade the app server in a high-availability setup
Assisting in error analysis and load testing of the portal

Jan 2000 - Dec 2002

3 years

Pre-Sales Consultant

D2 – Vodafone

Pre-sales for an LDAP directory server project
Supporting sales in selling Sun Directory Server for customer authentication, including:
Presentations
Responding to RFP
Supporting the solution partner
Designing the solution architecture
Architecture advice and clarifying technical details
Installing a test environment
Defining proof of concept scope
Installing and benchmarking the product in a POC

Jul 1999 - Jan 2004

4 years 7 months

Pre-Sales Consultant in Java Web Services / iPlanet

Sun Microsystems GmbH

Installing, configuring and demonstrating Sun solutions at clients, events and trade shows
Working out and presenting complex system solutions and validating them in a proof of concept
Collaborating with product management and development on client requirements
Independently supporting sales technically and conceptually
Advising clients on:
Identity management and single sign-on
Web and application servers (J2EE)
Portals (Portal Server)

Jan 1999 - Dec 2000

2 years

Pre-Sales Consultant

Volkswagen

Pre-sales for a J2EE application server project
Supporting sales in selling iPlanet Application Server for a vehicle weight measurement project, including:
Presentations
Helping the solution partner gedas develop the solution
Architecture advice and clarifying technical details
Installing the production environment in a workshop

Jan 1998 - Dec 1998

1 year

Pre-Sales System Consultant

Siemens Nixdorf

OEM partnership and hardware compatibility testing
Installing Solaris Intel on Siemens Nixdorf systems
Installing the test suite
Explaining installation to the client
Clarifying driver issues with client and US dev team
Running the test suite
Reviewing results with Siemens Nixdorf staff
Reporting test results to Sun in the USA

Jan 1996 - Dec 1998

3 years

Pre-Sales System Consultant

Siemens Nixdorf / Bezirksfinanzdirektion München

Pre-sales for Solaris desktop and server systems
Supporting Siemens Nixdorf in rolling out Solaris Intel desktops in finance offices, including:
Installing test systems
Clarifying driver compatibility
Certifying new hardware via test suite
Supporting setup of network installation environment
Presenting new features in Solaris releases
Troubleshooting issues

Mar 1995 - Jun 1999

4 years 4 months

Pre-Sales System Consultant in SunSoft

Sun Microsystems GmbH

Planning and performing client demos, presentations and trial installs
Working out and presenting complex system solutions
Supporting the Sun-Oracle partnership
Independently supporting sales technically and conceptually
Training and advising partners and OEMs on products
Advising clients and partners on:
Solaris SPARC and Intel
Sun Cluster
Oracle databases
Veritas Volume Manager
Development tools for Java, C, C++ and Fortran
Backup (Legato)
Firewalls (Checkpoint, SunScreen)

Jan 1995 - Dec 1998

4 years

Pre-Sales System Consultant

Siemens Nixdorf / Oberfinanzdirektion Niedersachsen

Solaris desktops for state tax office
Supporting Siemens Nixdorf in rolling out Solaris Intel desktops in finance offices, including:
Testing new systems
Explaining Solaris technical details and features
Clarifying network boot/install options
Presenting new features in Solaris releases
Troubleshooting issues

Aug 1994 - Feb 1995

7 months

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Freelance

Software development in C++.

Jan 1994 - Jul 1994

7 months

Trainer in the training department

iXOS Software GmbH

Preparing training materials for a Microsoft OLE object technology programming course
Conducting training sessions

May 1992 - Dec 1993

1 year 8 months

System Consultant

Compaq Computer GmbH

Supporting major clients and partners on UNIX systems on COMPAQ hardware
Advising on communication between UNIX and other OSs

Apr 1989 - Apr 1992

3 years 1 month

Pre-Sales Support Engineer

PCS Computer Systeme GmbH

System consulting focused on programming support
Building and leading a center for software porting
Performing product demos and presentations

Sep 1987 - Mar 1989

1 year 7 months

System Programmer

Nixdorf Computer AG

Designing and implementing ISO/OSI network protocols for a real-time OS in C

Summary

Many years of experience as a consultant in UNIX/Linux and Java in large, complex projects.
Very good knowledge and experience in identity management, single sign-on, LDAP, and Java/J2EE.
Strong understanding of operations in IT organizations and data centers, especially with RedHat Linux and Solaris.
Customer and team oriented, quick learner, highly committed and flexible.