Alexander Heister - System Tester

Q: Where is Alexander based?

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

Q: What languages does Alexander speak?

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

Q: How many years of experience does Alexander have?

Alexander has at least 27 years of experience. During this time, Alexander has worked in at least 7 different roles and for 5 different companies . The average length of individual experience is 2 years and 5 months . Note that Alexander may not have shared all experience and actually has more experience.

Q: What is Alexander's latest experience?

Alexander's most recent position is System Tester at Freelance Senior Software and System Tester .

Q: What companies has Alexander worked for in recent years?

In recent years, Alexander has worked for Freelance Senior Software and System Tester .

Q: Which industries is Alexander most experienced in?

Alexander is most experienced in industries like Banking and Finance , Information Technology (IT) , and Automotive . Alexander also has some experience in Healthcare , Manufacturing , and Retail .

Q: Which business areas is Alexander most experienced in?

Alexander is most experienced in business areas like Quality Assurance (QA) , Information Technology (IT) , and Product Development . Alexander also has some experience in Human Resources (HR) .

Q: Which industries has Alexander worked in recently?

Alexander has recently worked in industries like Banking and Finance , Manufacturing , and Biotechnology .

Q: Which business areas has Alexander worked in recently?

Alexander has recently worked in business areas like Quality Assurance (QA) , Information Technology (IT) , and Product Development .

Recommended expert

Valley, Germany

Experience

Jul 2023 - Jun 2025

2 years

System Tester

Freelance Senior Software and System Tester

System testing of automated banknote processing systems with CAN bus technology
Test case creation and test design
Test execution and documentation of results
Bug creation and retesting
Installation of complete machines and hotfixes
Use of Micro Focus ALM and Azure DevOps/TFS

Jul 2022 - Jun 2023

1 year

System Verification Engineer

Freelance Senior Software and System Tester

System testing of a fully automated laboratory solution with integrated analyzers and an aliquoting device
Requirements analysis and test design
Test execution and bug tracking
Use of Polarion ALM, Remisol Advance and MS Teams

Apr 2020 - Jun 2022

2 years 3 months

System Tester

Freelance Senior Software and System Tester

System testing of automated banknote processing systems with CAN bus technology
Test case creation and execution
Documentation of test results and bug retests
Installation of machines and hotfixes
Use of HP ALM, ClearQuest and VMware

Jan 2016 - Apr 2020

4 years 4 months

System Verification Engineer

Freelance Senior Software and System Tester

Continuation of the System Verification Engineer project at Beckman Coulter GmbH
Use of Polarion ALM, Visual Studio and Remisol Advance

Jul 2015 - Dec 2015

6 months

System Verification Engineer

Sogeti Deutschland GmbH

Development of a new laboratory automation system for blood and urine samples
Requirements analysis and test design
Creation of test cases and test execution
Responsibility for system tests
Use of Polarion ALM and Visual Studio

Jan 2015 - May 2015

5 months

Software Tester / Test Coordinator

Sogeti Deutschland GmbH

Support in revising the test concept and in defect management
Briefing specialist testers and supporting the test manager
Test coordination, test design, test data creation, and test execution
Error reporting focusing on GUI, login, routing, and various use cases
Use of HP Quality Center

Sep 2011 - Dec 2014

3 years 4 months

Technical Manager

Sogeti Deutschland GmbH

Personnel responsibility for 35 consultants
Filling open project requests in cooperation with account managers
Staff support, development, and reviews
Training and development planning
Conducting career days, recruitment activities, interviews, and kick-off events
Forecast planning for indirect projects (vacation, illness, training, availability)
Participation in the nationwide HR committee of the executive management

Nov 2010 - Aug 2011

10 months

Consultant

Sogeti Deutschland GmbH

System testing of heating systems for the client Webasto AG
Creation of schedules and test plans
Coordination of manual and automated test execution
Requirements analysis and review of system requirements and specifications
Test design and creation of system test specification up to approval
Conducting HIL tests and safety-relevant functional tests
Testing of vehicle diagnostics
Documentation of test results and defects
Use of DOORS, VECTOR CANoe, CAN bus, and SVN

Oct 2006 - Nov 2010

4 years 2 months

Senior Consultant

C1 SetCon GmbH

Software testing of dealer shops at Telefónica O2 Germany GmbH & Co. OHG in Munich
Test automation using soapUI and internal test tools
Test design and execution of ad-hoc, regression, acceptance, and component tests
Bug reporting with SVN, soapUI, Jira, and Confluence
Software testing of a B2B online shop for softLution GmbH in Lünen (Kaiser & Kraft GmbH)
Test execution and test design
Software development of a J2ME mobile app (eCall) in an internal project
Continuation of the project at Nokia

Jan 2001 - Sep 2006

5 years 9 months

Consultant

LogicaCMG & Co. KG

System testing of multimedia head units for Nokia AG in Bochum
Test design, test automation, and test execution with VECTOR CANoe, DeepThought, and CAN bus technology
Functional tests for USB, power, SMS, and MMS
J2EE web application for a financial services provider (WestLB Systems) on Basel II/rating DB
Software development using Eclipse, J2EE, JSP, HTML, JavaScript, Struts, SVN, JUnit, ANT, and Maven

May 1998 - Dec 2000

2 years 8 months

Java Application Developer

Sparkassen Informatik Systeme West GmbH

Development of Java applets and applications with CICS connection to DB2 host
Use of IBM VisualAge for Java, Eclipse, JFC Swing, DB2, COBOL, and Sparkassen DWH

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 Banking and Finance (12.5 years), Information Technology (10.5 years), Automotive (6.5 years), Healthcare (5 years), Manufacturing (4 years), and Retail (4 years).

Banking and Finance

Information Technology

Automotive

Healthcare

Manufacturing

Retail

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 Quality Assurance (21 years), Information Technology (19 years), Product Development (7.5 years), and Human Resources (3.5 years).

Quality Assurance

Information Technology

Product Development

Human Resources

Skills

Hands-on Mentality
High Commitment
Strong Sense Of Responsibility
Reliable
Independent Working Style
Team Player
Open-mindedness

Languages

German

Native

English

Advanced

Education

Siemens AG

Industrial Clerk (IHK) and Database Developer · Duisburg, Germany

Ruhr University Bochum

Geography · Bochum, Germany

Certifications & licenses

ISTQB Foundation Level

Profile

Created

August 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

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

Where is Alexander based?

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

What languages does Alexander speak?

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

How many years of experience does Alexander have?

Alexander has at least 27 years of experience. During this time, Alexander has worked in at least 7 different roles and for 5 different companies. The average length of individual experience is 2 years and 5 months. Note that Alexander may not have shared all experience and actually has more experience.

What roles would Alexander be best suited for?

Based on recent experience, Alexander would be well-suited for roles such as: System Tester, System Verification Engineer, Software Tester / Test Coordinator.

What is Alexander's latest experience?

Alexander's most recent position is System Tester at Freelance Senior Software and System Tester.

What companies has Alexander worked for in recent years?

In recent years, Alexander has worked for Freelance Senior Software and System Tester.

Which industries is Alexander most experienced in?

Alexander is most experienced in industries like Banking and Finance, Information Technology (IT), and Automotive. Alexander also has some experience in Healthcare, Manufacturing, and Retail.

Which business areas is Alexander most experienced in?

Alexander is most experienced in business areas like Quality Assurance (QA), Information Technology (IT), and Product Development. Alexander also has some experience in Human Resources (HR).

Which industries has Alexander worked in recently?

Alexander has recently worked in industries like Banking and Finance, Manufacturing, and Biotechnology.

Which business areas has Alexander worked in recently?

Alexander has recently worked in business areas like Quality Assurance (QA), Information Technology (IT), and Product Development.

What is Alexander's education?

Alexander attended Siemens AG for Industrial Clerk (IHK) and Database Developer.

Does Alexander have any certificates?

Alexander has 1 certificate: ISTQB Foundation Level.

What is the availability of Alexander?

Alexander is immediately available full-time for suitable projects.

What is the rate of Alexander?

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