Thomas Jahn - Test Manager for SAP Migrations and ERP

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Becherbach, Germany

Check rate

Experience

Oct 2024 - Feb 2025

5 months

Test Manager

Hamburger Energienetze GmbH

Method: none
Environment: ERP, S4/Hana, Confluence, Jira, Xray, SAP Solution Manager, Tosca
Created the test concept for the migration from ERP to S/4HANA
Created manual test cases and test plans for the acceptance test
Coordinated tests between the business testers
Test automation with Tosca
manual testing

Apr 2024 - Sep 2024

6 months

relaxed traveler

Sabbatical-Time

Method: mental relaxation
Environment: Italy, Hong Kong, South Africa

Jun 2023 - Mar 2024

10 months

Test Manager

Deutsche Bahn AG

Method: Scrum
Environment: Confluence, Jira, Xray, Pega Test Suite, DMP, MS Azure
Set up classic test management (customizing project)
Coordinated tests between the involved SST partners and partners from different business areas
Continued the test concept
Set up test automation with Pega and Xray
Created test plans
Supported the key users
manual testing
Evaluation and communication of test results with Xray

Jun 2022 - May 2023

1 year

TPL / Test Manager

Hornbach AG

Method: Scrum
Environment: Confluence, Jira, Xray, QF-Test, Integrity, SAP Solution Manager, SAP FiCo, cash register-specific software, Microsoft Azure Cloud
Set up classic test management (customizing project)
Coordinated tests between the involved partners (GEBIT/Hornbach AG)
Created the test concept
Set up test automation with QF-Test and the execution environment
Test data management for the required E2E tests
manual testing
Created test plans based on implementation packages
Supported the key users

Jan 2022 - Apr 2022

4 months

Test Manager (Hands on)

Senatskanzlei Hamburg AöR

Method: Scrum
Environment: Confluence, Jira, TM4J/Adaptavist
Set up classic test management (customizing project)
Coordinated tests between the involved partners (Dataport, OTS, Senate Chancellery)
Created the test concept for the audit
Created test plans based on implementation packages
Supported the key users
manual testing
Evaluation and communication of test results with TM4J

Nov 2021 - Mar 2022

5 months

Test Manager

Vaillant Group

Method: Scrum
Environment: X-Ray, Zephyr, Confluence, Jira, MS Azure
Set up classic test management for embedded systems and evaluation boards in Jira
Coordination of IoT tests between the partners involved in the test lab
Creation of test plans for HIL and SIL tests
Development of the test strategy for embedded software tests
Evaluation and communication of test results to the project lead and stakeholders

Jul 2021 - Nov 2021

5 months

Test Manager (Hands on)

VIACTIV Krankenkasse

Method: Scrum
Environment: Zephyr, Confluence, Jira
Set up classic test management (customizing project)
Coordination of IOP tests between the partners involved (AOK-Systems, IBM, MISC and VIACTIV)
Implementation of participation obligations
Task force during the implementation phase
Creation of test plans (cut-over) based on the project plan
Support for the business department during the test phases
Evaluation and communication of test results with Zephyr
Manual testing

Feb 2021 - May 2021

4 months

SIT environment responsibility, SIT test case creation

DB Netz AG

Method: Scrum
Environment: TMT (HPQC-ALM), Confluence, Jira
Responsibility for the SIT test environment
Creation of SIT test cases from the user perspective
Support for the business department during the SIT test phases
Evaluation and communication of test results in TMT (HPQC-ALM)

Nov 2019 - Aug 2020

10 months

Test Manager

Bundesamt für Migration und Flüchtlinge

Method: Scrum
Environment: IBM Blockchain, Protractor, SonarQube, TM4J, Confluence, Jira
Creation of the test concept for a blockchain environment with SST to LDS
Establishment of test management and accessibility tests
Conceptual test automation with Protractor
Evaluations with SonarQube from the daily build
Participation in all relevant project lead meetings
Selection of candidates for the test team and conducting introduction meetings
Involvement in strategic decisions for the project

Jan 2019 - Aug 2019

8 months

Test Manager, Project Coordination

DB Systel QATC

Method: Scrum
Environment: IBM TM1 and TM1 Web, SAP BW, SQL, HPQC-ALM (TD admin for configuration and maintenance), TFS, MS Project
Setup and maintenance of an extended defect management
Establishment of classic test management
Execution of project management to support the project lead iStAR
Creation and updating of project plans (costs, deadlines, activities/performance/resources)
Description and structuring of project deliverables and work packages, as well as coordination with the service providers
Structuring and quality assurance of the product backlog
Development and evaluation of action options to secure project goals and reduce project risks
Design and continuous improvement of processes for project execution
Preparation of project communication for stakeholders
Design and execution of test management, coordination of tests incl. documentation and monitoring of test cases and test results
Project coordination focused on maintaining the project plan, roadmaps, and identifying possible critical shifts
Adaptation of the DB Systel HPQC-ALM standard template to the project needs

Jul 2018 - Nov 2019

1 year 5 months

Test manager

DB Systel QATC

Method: SaFe
Environment: Smalltalk, Oracle12, HTML, Silk-Test, SikuliX, SoapUI, HPQC
Consolidation of the test concept
Setup and maintenance of an extended defect management
Test plan creation for acceptance testing
Coordination and planning of the individual test activities
Conceptual support for test automation
Coordination and planning of SST tests
Resource planning for the test environments
Reporting to the PV
Coordination of test topics with the contractor's project lead
Support for the business department during the acceptance phases
Problem solving workshops in the test area

May 2017 - Feb 2018

10 months

Test manager

Bundesagentur für Arbeit

Method: Scrum
Environment: Smart-GWT, SmartTrack by Aspera, SAP-ERM, -ERP, JAVA, HTML, Silk-Test, SoapUI
Consolidation and maintenance of the test concept as well as monitoring compliance
Consolidation, maintenance and further development of the existing test concept for load and performance testing
Conceptual development of the background load for load and performance testing
Conceptual setup of a new test data set
Test plan creation for acceptance testing
Coordination and planning of the individual test activities
Conceptual support for test automation as well as load and performance tests
Coordination and planning of SST tests with the SST partners as well as the joint release planning
Functional and technical test environment planning
Creation and administration of test accounts as well as their permissions and adjustments
Reporting to the PV
Support for the business department in the individual test phases
Task force for urgent project topics

Sep 2014 - Oct 2016

2 years 2 months

Test manager

Bundesagentur für Arbeit

Method: Scrum
Environment: (B)ADF, JAVA, HTML, Silk-Test, SCTM, SoapUI
Creation of the test concept and monitoring compliance
Test coordination for acceptance tests
Coordination and planning of the individual test activities
Conceptual support for test automation
Administrative support for the BA tool chain (Innovator>SCTM>Silk-Test)
Development of a workflow design in JIRA and Confluence
Creation and administration of test data as well as test accounts and their permissions
Resource planning for the test environments with different release versions
Coordination of the test contents with the SST partners for the acceptance tests
Support and management of tests for mobile devices
Coordination of tests on accessibility for the entire project
Task force for urgent project topics
Manual testing

Aug 2012 - Jul 2014

2 years

Test manager

Bundesagentur für Arbeit

Method: Scrum
Environment: (B)ADF, SmartTrack by Aspera, JAVA, HTML, Silk-Test
Creation of the test concept and monitoring compliance
Project and test plan creation for acceptance testing
Coordination and planning of the individual test activities
Conceptual support for test automation as well as load and performance tests
Development of a workflow design in SBM specifically based on the project's needs
Coordination and planning of SST tests with the SST partners as well as the joint release planning
Functional and technical test environment planning
Planning the creation of migration data for dynamic and static tests
Creation and administration of test accounts as well as their permissions and adjustments
Conceptual planning of training environments
Reporting to the PL
Support for the business department in the individual test phases
Task force for urgent project topics
Manual testing

May 2012 - Sep 2012

5 months

Test coordinator

Bundesagentur für Arbeit

Method: Scrum
Environment: (B)ADF, SmartTrack by Aspera, JAVA, HTML, Silk-Test
Coordination and planning of test activities
Support for the PL in the strategic rollout planning of KRM
Support for release management
Test data concept and creation
Test plan creation
Reporting to the PL

May 2012 - Aug 2012

4 months

Tester

Bundesagentur für Arbeit

Method: Scrum
Environment: (B)ADF, JAVA, HTML, Silk-Test
Test case creation
Test support for the business department
Reporting to the project lead

Feb 2011 - Apr 2012

1 year 3 months

Requirements Analyst

Landesbank BW

Method: none
Environment: Lotus Notes 8.1
Member of the project group for replacing the Values / MISS IT architecture in the bank's trading area
Responsible for carrying out a requirements analysis in the business departments
Decision support for selecting future connections and data transfers (co-location, line capacity and performance, monitoring, and costs)
Analysis for the future use of a unified user interface

Oct 2008 - Dec 2010

2 years 3 months

Release Manager

Insurance

Method: Scrum
Environment: Tosca Suite, SL2, Oracle, Lotus Notes, Maven 2
Monitoring compliance with requirements criteria within change and product management
Checking the schedule and functional scope
Documentation of scope and changes
Conceptual further development of test automation mechanisms
Setup and professional support of an end-to-end change management solution
Advanced workflow concepts for CRs, FRs, reviews, and tasks
Test coverage and test cycle documentation

Jul 2007 - Aug 2008

1 year 2 months

Test Manager

Insurance

Method: Scrum
Environment: Oracle, data warehouse, CICS, host emulator, IBM OnDemand
Preparation of the test environment, test case design, and test management
Test coordination between the individual group companies
Test case creation for migrating production data
Review of the data model between host and Oracle
Ensuring test requirements are met

Apr 2004 - Jul 2007

3 years 4 months

Project Coordinator

Insurance

Method: Scrum
Environment: Segue tool suite (SCTM, Silk-Test), Lotus Notes, MS Office
Analysis and feasibility study
Test coverage documentation
Tool evaluation for test automation
Tool evaluation for load and performance tests
Monitoring of Java applications

Jan 2003 - Apr 2004

1 year 4 months

Test Manager

Insurance

Environment: Lotus Notes versions 5, 7 and 8.1
Organization of the test team, test environments, test levels and test data
Test coordination and identification of business responsibilities
Quality assurance and approval of rollouts
Creation of regular test status reports

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Insurance, Government and Administration, Information Technology, Transportation, Retail, and Banking and Finance.

Insurance

Government and Administration

Information Technology

Transportation

Retail

Banking and Finance

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Quality Assurance, Project Management, Information Technology, Human Resources, Strategy, and Product Development.

Quality Assurance

Project Management

Information Technology

Human Resources

Strategy

Product Development

Skills

Test Processes: Test Estimation, Test Design, Test Execution, And Reviews
Istqb Certified Tester Foundation Level
Agile Tester Extension Istqb Certified Tester Foundation Level
Istqb Certified Tester Advanced Level – Test Manager
Istqb Certified Tester Advanced Level – Test Analyst
Istqb Certified Tester Advanced Level – Technical Test Analyst
Test Methods: Black Box, White Box, Coverage Testing, Exploratory Testing, User Acceptance Testing, And Interface Testing
Test Tools: Borland/Micro Focus Silk Performer
Test Tools: Compuware Dynatrace
Test Tools: Borland/Micro Focus Silk Test
Test Tools: Borland/Micro Focus Silk Central Test Manager (Sctm)
Test Tools: Soapui-Pro, J-Unit, Swet, General Tool Chains
Test Tools: Selenium, Tosca, Sikuli, Qa-Testpartner, Pega Test Suite, Xray, Cypress, Tm4j/Adaptavist, Qf-Test, Integrity, Zephyr, Hpqc-Alm, Sonarqube, Protractor, Ci/Cd Pipeline
Defect Management
Configuration Management
Project Management
Resource Management
Planning, Setup, And Maintenance Of Test Data
Agile Testing: Test Approach, Techniques, Methods, And Tools (E.G. Atdd, First)
Non-Functional Testing: Load And Performance Testing (L&P)
Load And Performance Tests For Ajax Applications
Load And Performance Tests For Javascript
Load And Performance Tests For Html5
Testing Of Web Services In A Soa Environment
Uml Knowledge
Design And Further Development Of The Functional Test Approach Or Load And Performance Tests, Taking Into Account The Processes, Methods, And Tools Used
Planning And Control Of Test Resources
Design Of Test Automation
Consulting And Coaching Of Project Management
Functional Development Of System Integration Tests
Design, Planning, And Execution Of Combined Load Tests
Planning And Control Of The Setup Of Synthetic Data Sets Or The Cross-System Anonymization Of Production Data Sets
Consulting On Test Processes And Test Methods In Products And Projects
Consulting On The Implementation And Introduction Of Test Standards
Additional Relevant Knowledge: Project Management
Additional Relevant Knowledge: Programming Languages
Industries: Public Administration, Retail, Public-Law Institution, Manufacturing, Statutory Health Insurance, Banking, Insurance, Energy Industry
Languages / Notations: Cobol, Jcl, C, C++, Sql, Uml, Bpmn, Tool-Specific Languages
Methods: Agile Project Management, Scrum, Kanban, Safe, V-Model Xt, Itil, Ireb, Requirements Management, Release Management, Test Management, Test Automation
Tools: Ms Office, Ms Project, Eclipse, Serena Business Mashups, Jira, Serena Version Manager, Serena Business Mashup, Hpqc-Alm, Silk-Framework Sctm, Jira, Confluence, Protractor, Jenkins, Jdeveloper, (B)Adf, Smarttrack By Aspera, Java, Html, Silk Test, Tosca, Selenium, Sap Solution Manager, Sap Erp, Sap Erm, Sap Fico, Pega Test Suite, Xray, Cypress, Tm4j/Adaptavist, Qf-Test, Integrity, Zephyr, Hpqc-Alm, Sonarqube, Protractor

Languages

German

Advanced

Certifications & licenses

Diploma COBOL Developer

ISTQB Certified Tester Advanced Level Technical Test Analyst

Statistics

Experience

Total positions 21

Experience in Insurance 8 y

Avg length 1 y

Longest experience 3 y 3 m

Expertise

Recent roles Test Manager, relaxed traveler, TPL / Test Manager

Main industries Insurance, Government and Administration, Information Technology

Main business areas Quality Assurance, Project Management, Information Technology

Qualifications

Certifications earned 6

Profile

Member since

December 2023

Last update

August 2026

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Frequently asked questions

Have questions? Find more information here.

Thomas is based in Becherbach, Germany and can operate in on-site, hybrid, and remote work models.

Thomas speaks the following languages: German (Advanced).

Thomas has at least 20 years of experience. During this time, Thomas has worked in at least 12 different roles and for 13 different companies. The average length of individual experience is 1 year and 11 months. Note that Thomas may not have shared all experience and actually has more experience.

Based on recent experience, Thomas would be well-suited for roles such as: Test Manager, relaxed traveler, TPL / Test Manager.

Thomas's most recent position is Test Manager at Hamburger Energienetze GmbH.

In recent years, Thomas has worked for Hamburger Energienetze GmbH, Sabbatical-Time, Deutsche Bahn AG, Hornbach AG, and Senatskanzlei Hamburg AöR.

Thomas is most experienced in industries like Insurance, Government and Administration, and Information Technology. Thomas also has some experience in Banking and Finance, Transportation, and Retail.

Thomas is most experienced in business areas like Quality Assurance, Project Management, and Information Technology. Thomas also has some experience in Human Resources, Strategy, and Product Development.

Thomas has recently worked in industries like Retail, Transportation, and Tourism.

Thomas has recently worked in business areas like Quality Assurance, Information Technology, and Product Development.

Thomas has 6 certificates. Among them, these include: Diploma COBOL Developer, ISTQB Certified Tester Advanced Level Technical Test Analyst, and ISTQB Certified Tester Advanced Level Test Analyst.

The availability of Thomas needs to be confirmed.

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Daily rate avg. 806 €

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Median rate 760 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.