Thomas Minski - Application Development

Q: Where is Thomas based?

Thomas is based in Berlin, Germany .

Q: What languages does Thomas speak?

Thomas speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Thomas have?

Thomas has at least 47 years of experience. During this time, Thomas has worked in at least 16 different roles and for 7 different companies . The average length of individual experience is 3 years and 9 months . Note that Thomas may not have shared all experience and actually has more experience.

Q: What is Thomas's latest experience?

Thomas's most recent position is Application Developer at Freelance .

Q: Which industries is Thomas most experienced in?

Thomas is most experienced in industries like Information Technology (IT) , Banking and Finance , and Insurance . Thomas also has some experience in Automotive and Chemical .

Q: Which business areas is Thomas most experienced in?

Thomas is most experienced in business areas like Information Technology (IT) , Quality Assurance (QA) , and Customer Service . Thomas also has some experience in Operations , Product Development , and Accounting .

Q: What is Thomas's education?

Thomas attended Vocational School Erlangen for Industrial clerk, commerce clerk .

Recommended expert

Berlin, Germany

Experience

Mar 2015 - Mar 2019

4 years 1 month

Application Developer

Freelance

Development of a new payment method
Adaptation of SB programs for FRAUD provisioning
Creation of programs for fraud processing
Defect fixing and further development of SB programs
Analysis and development as part of FRAUD for SB applications
Requirement analysis
Program development
Quality assurance of the developed programs
Testing of the developed programs
Development of new batch applications
Banks
Assembler, Cobol2, DB2, File-AID, IBM mainframe, IBM ISPF, JCL, JES2, REXX, SQL, TSO, Xpediter, z/OS, IMS-DB, IMS-DC

Jul 2014 - Dec 2014

6 months

Migration Project

Freelance

Migration of application data to a new target environment
Creation of test programs according to specifications
Creation of loading programs according to specifications
Quality assurance of the created programs
Testing of the created programs
Development of new batch applications
Banks
Assembler, Cobol2, DB2, File-AID, IBM mainframe, IBM ISPF, JCL, JES2, REXX, SQL, TSO, Xpediter, z/OS

Jan 2013 - Jun 2014

1 year 6 months

Setup + maintenance of test environments + support

Freelance

Setup and maintenance of test environments for DB2 + IMS data stores for programs from the LEASING application
Analysis of requirements
Creation of IT concepts
Creation of tools in the form of REXX scripts as well as programs (Assembler / COBOL)
Maintenance and further development of the LEASIS application
Analysis + enhancement of DB2 applications for the new DB2 timestamp
Analysis and creation of archiving programs based on the contract number
Automotive industry
Assembler, Cobol2, DB2, File-AID, IBM mainframe, IBM ISPF, IMS-DB, IMS-DC, JCL, JES3, REXX, SQL, z/OS

Jul 2011 - Dec 2012

1 year 6 months

Application development in the BB3/BANK21 environment

Freelance

Programs in home banking/internet banking for various client banks
Analysis of requirements
Creation of IT concepts
Creation and testing of COBOL/Assembler host programs with DB2 / IMS data storage
Adaptation of SB programs to SEPA requirements
Adaptation of SB programs to the in-house programming model BTS
Defect fixes and maintenance
Banks, software house
Assembler, COBOL, Data Manager, DB2, File-AID, IMS-DB, IMS-DC, JCL, JES2, REXX, SQL, TSO, z/OS

Feb 2011 - May 2011

4 months

Setup and maintenance of test environments

Freelance

Setup and maintenance of test environments for DB2 + IMS data stores for programs from the LEASING application
Analysis of requirements
Creation of IT concepts
Creation of tools in the form of REXX scripts as well as programs (Assembler / COBOL)
Assembler, COBOL, DB2, File-AID, IMS, IMS-DB, IMS-DC, ISPF, JCL, JES3, REXX, SQL, TSO, Xpediter, z/OS

Jan 2010 - Jan 2011

1 year 1 month

Application development in the BANK21 environment

Freelance

New development of BANK21 backend applications for employee management and organizational structure
Requirement analysis
Creation of IT concepts
Development and testing of COBOL host programs with DB2/IMS data storage
Defect fixes and maintenance
Banking industry, software house
Assembler, COBOL, DB2, File-AID, IBM ISPF, IMS, IMS-DB, JCL, JES2, MVS, SQL, z/OS

Jan 2009 - Dec 2009

1 year

Braunschweig, Germany

Application development: maintenance, further development and defect fixes

CKC Group

Independent migration of leasing host applications to 31-bit addressing including analysis and implementation
Migration and expansion of data storage from IMS to DB2 including analysis and implementation
Maintenance and further development of host applications in the leasing sector
Review of programs regarding the migration of data storage from IMS to DB2
Conversion of programs to 31-bit addressing (Assembler + COBOL)
Requirement analysis
Creation of IT concepts
Maintenance, further development and testing of host programs in COBOL/Assembler with IMS DB/DC and DB2
Defect processing and bug fixes
Automotive industry, financial services
Assembler, COBOL, DB2, File-AID, IMS, IMS-DB, IMS-DC, ISPF, JCL, REXX, Xpediter, z/OS, SQL, REXX-Fileaid

Jun 2007 - Dec 2008

1 year 7 months

Münster, Germany

Application development in the BB3 and B21 environment

VIADEE Unternehmensberatung GmbH

Maintenance and further development of BB3 programs for self-service terminals of various client banks
Requirement analysis
Creation of IT concepts
Maintenance, further development and testing of host programs in COBOL with IMS DB/DC and DB2
Creation of host programs as part of a new architecture concept for customer management and withholding tax in the B21 environment
Development of host programs in COBOL (especially access modules for IMS and/or DB2)
Defect processing and bug fixes
Further development of host processes for ATMs, BANK21 client and BANK21 withholding tax
Banking industry, software house
COBOL, DB2, File-AID, IBM mainframe, IMS-DB, IMS-DC, JCL, JES2, Xpediter, z/OS, TSO, ISPF/PDF, REXX, SQL

Jun 2005 - Mar 2007

1 year 10 months

Hanover, Germany

Migration of legacy applications to SAP (FS-CD + FS-FS)

CS Consulting AG

Programs from the insurance sector for motor vehicle insurance (policy management, accounting, contract processing)
Creation of migration concepts
Development of migration programs in Cobol/Assembler with DB2
Extension of legacy applications for access to SAP systems
Development of central subprograms
Maintenance and creation of programming standards
Adaptation and maintenance of legacy applications for the host/SAP environment
Support and advice to team members on technical issues
Defect fixes after go-live for contract processing, policy management and accounting
Further development of host applications for contract processing and policy management
Coordination with the business department for implementation and testing
Financial services, insurance
Assembler, CICS, COBOL, DB2, File-AID, IBM mainframe, IBM ISPF, ICL, JES3, SQL, VSAM, Xpediter, z/OS

May 2004 - Jun 2005

1 year 2 months

Hanover, Germany

Migration from DOS/VSE to z/OS

CS Consulting AG

Programs from the insurance sector for motor vehicle insurance
Dump analysis, technical consulting and program adjustments
Fault analysis and dump analysis including bug fixes
Support for internal staff on z/OS specifics
Checking and reconciliation of test procedures
Revision of programs regarding structure and adjustment of error handling for z/OS requirements
Design and implementation of restart processes within batch programs
Design and creation of technical programming standards for Assembler/COBOL programs
Coaching and training of internal staff in COBOL, JCL, DB2, CICS
Redesign of complex structures
Financial services, insurance
Assembler, CICS, COBOL, DB2, File-AID, IBM mainframe, ISPF, JCL, JES3, TSO, VSAM, Xpediter, z/OS

Apr 1997 - Jan 2004

6 years 10 months

Germany

Methods and Procedures Department

IBM Business Services GmbH

Evaluation, implementation and operation of host-based software configuration management applications
Analysis of requirements for the KVS-IKV application
Maintenance, tuning, design and further development of the KVS-IKV application
Maintenance, tuning, design and further development of the application to create built-in and custom copy routines
Planning and execution of load and performance tests for the KVS-IKV application
Creation of documentation and the installation manual
Migration of the KVS-IKV application from COBOL I to COBOL II, and from CLIST to REXX
Migration of the KVS-IKV application's data stores from VSAM to DB2, including logical and physical database design
Design, development and testing of migration programs for data conversion from VSAM to DB2
Design, development and testing of DB2 interface programs for DB2 access by the KVS-IKV application
Analysis and conversion of the KVS-IKV application to support Y2K compliance and multi-tenancy
Design, development, maintenance and documentation of interfaces between KVS-IKV and the SCLM and IKV tools
Planning and execution of migrations for new KVS-IKV releases
Technical consulting for department staff and knowledge transfer
First-level support for KVS-IKV users both domestically and internationally
Advice and support for users in the areas of COMPILE, DB2, CICS, COBOL, Assembler and PL/I
Banking
Assembler, CA-Intertest, CA-Librarian, CICS, CLIST, COBOL, DB2, File-AID, ISPF, JCL, JES2, OS/390, PL/1, RACF, REXX, Rochade, SQL, TSO, VSAM, z/OS

Mar 1995 - Mar 1997

2 years 1 month

Berlin, Germany

Conversion of custom banking applications to the MBS standard package

Schwarz, Prof. Spruth & Associates

Migration of custom banking applications into Alldata's MBS standard package
Analysis, design and development of central subprograms, utility programs and test programs (integrity tests) in Assembler and/or COBOL
First-level support for the conversion team
Support for the conversion team in programming tasks
Runtime optimizations of the conversion programs
Design and creation of migration programs for data migration
Preparation of program documentation
Banking
Assembler, COBOL, DOS, JCL, VSAM

Jan 1990 - Jul 1994

4 years 7 months

Frankfurt, Germany

Methods and Procedures Department

ISE-Data GmbH

Evaluation, implementation and operation of host-based software configuration management applications
Support for the development department in migrating from Bull to IBM
Analysis, design and development of the Software Administration Procedure (SAD)
Selection, implementation and support of tools for the SAD procedure
Customization and administration of the CCC tool (KM tool by Softool)
Setup, design and delivery of training for the KM tool
Creation of automation processes for the CCC KM tool using Assembler, ISPF applications and macro language
Preparation of user documentation for the KM tool and the SAD procedure
First-level support for users and the data center
Advice and support for users in the areas of COMPILE, CICS, DB2, COBOL, PL/I and Assembler
Analysis, design, development and maintenance of production handovers and automated bind processes
Generation of bind commands using Assembler and COBOL programs
Banking
Assembler, CA-Intertest, CICS, CLIST, COBOL, DB2, File-AID, ISPF, JCL, JES2, OS/390, RACF, REXX, SQL, TSO

Jun 1989 - Dec 1989

7 months

Germany

Data center staff for RMDS implementation

Introduction of RMDS in Germany and Switzerland
Creation and implementation of necessary procedures
Setup and delivery of user training
First-level support for RMDS users
Chemical industry
ISPF, JCL, JES3, OS/370, RACF, TSO

Apr 1988 - Oct 1988

7 months

Conducting seminars for console operators

Conducting seminars for console operators (theory)
Preparation of seminar materials for MVS and JES2/JES3
Planning and delivery of in-house training for data center staff
IT services
ISPF, JCL, JES2, JES3, OS/370, TSO

Aug 1984 - Dec 1987

3 years 5 months

Data Center Operations Support

Consol-Operating and work preparation for various projects and clients
Banks
ISPF, JCL, JES2, JES3, OS/370, TSO, VTAM

Jan 1969 - Dec 1983

15 years

Consol-Operating / Assembler-Programming / COBOL-Programming

Consol-Operating for IBM systems
Assembler-Programming for ICL System Ten
COBOL-Programming for UDS/UTM with BS2000
Assembler, BS2000, JCL, JES2, JES3, OS/370, UDS, UTM

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (30.5 years), Banking and Finance (19.5 years), Insurance (3 years), Automotive (2.5 years), and Chemical (0.5 years).

Information Technology

Banking and Finance

Insurance

Automotive

Chemical

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (47 years), Quality Assurance (13.5 years), Customer Service (5 years), Operations (3.5 years), Product Development (2.5 years), and Accounting (2 years).

Information Technology

Quality Assurance

Customer Service

Operations

Product Development

Accounting

Skills

Branches:

Automotive Industry
Banks
Chemicals
It Services
Financial Services
Software House
Insurance

It Skills – Operating Systems:

Ibm Ispf >10 Years, Advanced, Last Used In 2019
Z/os >10 Years, Advanced, Last Used In 2019
Os/370 >3 Years, Advanced, Last Used In 1994
Os/390 >3 Years, Advanced, Last Used In 2004
Dos >2 Years, Beginner, Last Used In 1997
Bs2000 >1 Year, Beginner, Last Used In 1980
Mvs

It Skills – Languages:

Assembler >10 Years, Expert, Last Used In 2019
Cobol2 >10 Years, Expert, Last Used In 2019
Jcl >10 Years, Expert, Last Used In 2019
Rexx >10 Years, Advanced, Last Used In 2017
Sql >10 Years, Expert, Last Used In 2019
Cobol >3 Years, Advanced, Last Used In 2000
Pl/1 >1 Year, Beginner, Last Used In 2003

It Skills – Databases:

Db2 >10 Years, Expert, Last Used In 2019
Ims >7 Years, Advanced, Last Used In 2019
Ims-db >7 Years, Expert, Last Used In 2019
Rochade >5 Years, Advanced, Last Used In 2003
Vsam >5 Years, Expert, Last Used In 2008
Uds >1 Year, Beginner, Last Used In 1980

It Skills – Data Center / Networks:

Cics >4 Years, Advanced, Last Used In 2007
Ims-dc >6 Years, Advanced, Last Used In 2019
Vtam >3 Years, Advanced, Last Used In 1990
Utm >1 Year, Beginner, Last Used In 1980

It Skills – Tools:

Jes2 >10 Years, Advanced, Last Used In 2018
Tso >10 Years, Advanced, Last Used In 2019
Ispf >10 Years, Advanced, Last Used In 2019
File-aid >8 Years, Advanced, Last Used In 2019
Intertest >5 Years, Advanced, Last Used In 2007
Jes3 >5 Years, Advanced, Last Used In 2013
Racf >5 Years, Advanced, Last Used In 2004
Xpediter >7 Years, Advanced, Last Used In 2019
Ca-librarian >2 Years, Advanced, Last Used In 2015
Ca-intertest >1 Year, Advanced, Last Used In 2003
Data Manager

Soft Skills:

Independent Working
Commitment
Flexibility
Conscientiousness
Conflict Management
Resilience
Teamwork
Reliability

Others:

Hsm
Sclm
Rmds

Languages

German

Native

English

Advanced

Education

Oct 1965 - Jun 1968

Vocational School Erlangen

Industrial clerk, commerce clerk · Erlangen, Germany

Oct 1956 - Jun 1965

School Wuppertal

Secondary school diploma · Wuppertal, Germany

Profile

Created

November 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Thomas based?

Thomas is based in Berlin, Germany.

What languages does Thomas speak?

Thomas speaks the following languages: German (Native), English (Advanced).

How many years of experience does Thomas have?

Thomas has at least 47 years of experience. During this time, Thomas has worked in at least 16 different roles and for 7 different companies. The average length of individual experience is 3 years and 9 months. Note that Thomas may not have shared all experience and actually has more experience.

What roles would Thomas be best suited for?

Based on recent experience, Thomas would be well-suited for roles such as: Application Developer, Migration Project, Setup + maintenance of test environments + support.

What is Thomas's latest experience?

Thomas's most recent position is Application Developer at Freelance.

Which industries is Thomas most experienced in?

Thomas is most experienced in industries like Information Technology (IT), Banking and Finance, and Insurance. Thomas also has some experience in Automotive and Chemical.

Which business areas is Thomas most experienced in?

Thomas is most experienced in business areas like Information Technology (IT), Quality Assurance (QA), and Customer Service. Thomas also has some experience in Operations, Product Development, and Accounting.

What is Thomas's education?

Thomas attended Vocational School Erlangen for Industrial clerk, commerce clerk.

What is the availability of Thomas?

Thomas is immediately available for suitable projects.

What is the rate of Thomas?

Thomas's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.