Hendrik W. - Software Test and Product Maintenance Support

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Berlin, Germany

Experience

Jul 2024 - Nov 2024

5 months

Software Test and Product Maintenance Support

Anton Paar ProveTec GmbH

Support the development team with software testing and product maintenance.
Field: laboratory instruments and process measurement systems.
Add/create test specifications.
Perform regression tests.
Conduct release tests.
Analyze Jira tickets.
Identify software bugs and fix them using C#.
Development tools: MS Visual Studio, various proprietary tools, Git, Fork, MS Office, Jira, SQLite, TeamCity, Putty.

Jun 2024 - Jun 2024

1 month

E-Invoice Generation Specialist

Private Project

Create an e-invoice according to EN 16931 from a given invoice in Docx format.
Field: office software.
Design, implementation, deployment, documentation.
Extract invoice data from the Docx file.
Generate an XML file according to EN 16931.
Generate a PDF/A-3 file from the Docx file.
Embed the XML file into the PDF file.
Development tools: PyCharm (docx2python, xml.etree.ElementTree), MS Word.

Feb 2024 - May 2024

4 months

Test Environment Developer

Miethke GmbH & Co. KG

Design and implement a test environment for automated system and integration tests in C and Python.
Industry: medical technology.
Project organization: Scrum, CI/CD.
Create the concept.
Implement test functionality on the target system using C.
Implement control software with Python.
Automate report file generation (text, PDF, XML).
Implement tests on the target system.
Documentation.
Target system: Windows PC, microcontroller board with STM32L4.
Development tools: Git, GitLab, Git Extensions, STM32CubeIDE, Segger J-Link, Putty, PyCharm (serial, argparse, json, configparser, Reportlab, xunit_xml), Doxygen.

Nov 2023 - Jan 2024

3 months

Embedded Software Engineer

Phoenix Contact

Create the software specification and adapt an existing embedded C/C++ software to new hardware (STM32G4 family) including documentation; adapt the existing CANopen interface to CANopen FD. Software adaptation was the main focus.
Industry: charging infrastructure.
Project organization: complex single project.
Create the software specification.
Analyze and document the existing software.
Document the existing CANopen FD messages.
Concept for software adaptation.
Implementation, documentation.
Target system: microcontroller board with STM32G491.
Development tools: MS Office, PlantUML, Git, Jira, PCan-View, PCAN-USB FD, STM32CubeIDE, ST-Link/V2, CANopenEditor/EDS-Editor V4-1, Doxygen.

Oct 2023 - Oct 2023

1 month

MS Outlook Automation Specialist

Private Project

Extended mail merge feature for MS Outlook.
Field: office software.
Design, implementation, deployment, documentation.
Extract all email addresses and names in a defined folder structure from all PST files in a local folder.
Create a CSV file with the collected information.
Send emails to all entries in a CSV file.
Development tools: PyCharm (unicodecsv, win32com, csv, httplib2, oauth2client, base64, email, smtplib), MS Outlook.

Feb 2023 - Jul 2023

6 months

VBA/VB.net Developer

Privates Projekt

Refactoring and extension of several modules of the VBA macro collection for MS Office to create business documents (see 02/13 – 09/14).
Area: Office software.
Re-implementation, extension, and testing of individual modules written in VBA using VB.net.
MS Word: letter, invoice, time sheet (input forms, address from Outlook, choose letter/fax/email).
MS Excel: bank statement (input forms, use export from banking software, generate PDF).
Target system: Windows 10 or newer with MS Office 2019 or newer.
Development tools: MS Office 2019, MS Visual Studio 2022.

Jul 2022 - Dec 2022

6 months

Software Developer

Vossloh Locomotives GmbH

Supported the development team in product maintenance and implementation of new functionality.
Industry: rail vehicles.
Project organization: Scrum, V-Model.
Processing change requests, i.e. design, implementation, and conducting developer tests.
Maintaining documentation (specification, architecture specification, design specification).
Design and implementation of automated tests.
Document and code reviews.
Target system: Selectron control unit.
Development tools: MS Office, SVN, Jira, Mantis, Selectron CAP 1131.

Sep 2021 - Jul 2022

11 months

Software Developer / Consultant

Mitel Deutschland GmbH

Supported the development team with product adjustments and provided consulting (architecture, implementation concept) for the integration of new hardware.
Industry: telecommunications.
Project organization: classic.
Analyzed and fixed known bugs in C and C++.
Performed manual tests.
Code reviews.
Integration of a new battery charging controller into the existing software - integration concept.
Integration of a new battery charging controller into the existing software - architecture adjustments.
Integration of a new battery charging controller into the existing software - I²C communication.
Integration of a new battery charging controller into the existing software - type detection.
Integration of a new battery charging controller into the existing software - software adaptation to changed functionality.
Integration of QR code functionality into the existing system - generating the QR code.
Integration of QR code functionality into the existing system - extending the menu structure.
Target system: embedded system (SoC) with DECT and Bluetooth.
Development tools: IAR Workbench, Doxygen, MS Visual Studio, proprietary tools.

Jan 2021 - Jul 2021

7 months

Software Engineer

Olympus Winter & Ibe GmbH

Product maintenance, consulting/support for test automation and structuring.
Industry: medical technology.
Project organization: classic.
Analyzed and fixed known bugs in existing C code.
Performed tests.
Implemented and optimized tests in Perl.
Optimized test architecture.
Verified documents and software.
Document and code reviews.
Target system: embedded system with IMX6Q7 microcontroller (Arm Cortex A9) running VxWorks 7.
Development tools: Wind River Workbench 4, Surround SCM, proprietary tools, Raspberry Pi with various scripts and tools on embedded Linux for debugging via Ethernet, MS Office.

Sep 2020 - Dec 2020

4 months

Embedded Software Engineer

Peucon GmbH

Implementation of a CAN flash loader for the control unit of an e-bike.
Industry: e-mobility.
Project organization: classic, CI/CD.
Created documents (specification, documentation).
Implementation in C, commissioning.
Code reviews.
Target system: embedded system with MC9S12XEQ512 microcontroller.
Development tools: Eclipse 4.11.0 with build environment, WinIDEA V9.12.288 debugger, Cosmic S12X C compiler, proprietary tools, Peak PCAN-USB, Peak PCanView, Git, Git Ahead.

Jan 2019 - Apr 2020

1 year 4 months

Test Automation Engineer / Consultant

Bombardier Transportation GmbH

Provide support and consulting to the test team in creating and conducting system tests.
Industry: rail vehicles.
Project organization: classic, V-model.
Creating automated tests in various test environments and for different subsystems (GenATP, TC, …).
Adapting tests to changed requirements.
Revising the concept for evaluation and validation of GPS position data.
Document and code reviews.
Creating proprietary tools with Python.
Target system: Windows PC with MS Visual Studio 2010 and C# test suite; Windows PC with MS Visual Studio 2010 and NUnit 2.6.4.
Development tools: MS Visual Studio 2010, MS Office, proprietary test framework, Rational ClearCase, Rational ClearQuest, Cygwin, NUnit 2.6.4, Mitrac MTPE/MWT.

Aug 2018 - Dec 2018

5 months

Embedded Systems Engineer / Software Developer

LJU Automatisierungstechnik GmbH

Development of the self-test for an embedded system and its interfaces, as well as the PC software to visualize the test results.
Industry: automation technology.
Project organization: complex single project.
Embedded system: creating the test concept, selecting components to be tested, specification, implementation in C and commissioning, documentation.
PC: specification, documentation, user manual.
PC backend: implementation and commissioning of the visualization software with Qt.
PC frontend: adapting/extending the user interface with Qt.
Target system: embedded system with Renesas RX600 series controller, CAN, RS232, Ethernet, various I/O; Windows 7 PC.
Development tools: IAR Embedded Workbench, Qt Creator 2.8.1, PlantUML.

Aug 2017 - Nov 2018

1 year 4 months

Software Development Consultant

embeddeers GmbH

Consulting in the development of battery management system software.
Industry: automotive, e-mobility.
Project organization: classic.
Debugging, creating specifications and documentation, communicating with the customer, coordinating a test team.
Reviewing specifications, implementation in C, conducting developer tests, creating specifications.
Developing macros in LibreOffice.
Code reviews.
Target system: embedded system with ARM microcontroller.
Development tools: DOORS, CANoe, Serena Dimensions, PlantUML, Windriver compiler, Doxygen, WinIdea debugger, LibreOffice.

Mar 2017 - Present

8 years 7 months

Home Automation System Developer

Privates Projekt

Planning and implementation of the automation of a single-family house.
Industry: home automation.
Concept, installation, implementation of software for (partial) automation of heating, lighting, power, blinds and smoke detectors.
Target system: Homematic CCU2 with Homematic and Homematic IP components.
Development tools: Homematic Web UI, Homematic script.

Jan 2016 - Jun 2017

1 year 6 months

Requirements Engineer / Test Automation Engineer

Deuta-Werke GmbH

Supporting the development team in preparing customer requirements in close cooperation with the client.
Industry: rail vehicles.
Project organization: Scrum, V-model, CI/CD.
Requirements management: preparing system requirements and creating the software specification.
Creating test specifications.
Implementing automated tests.
Supporting the implementation of the software development process.
Creating tools in VBA and VB.Net to support document creation.
Document and code reviews.
Development tools: MS Office, Mantis, Jira, Git, VBA, MS Visual Studio 2015/2017, Robot Framework, Python, Jenkins.

Jul 2015 - Aug 2015

2 months

VBA Developer

Chartwerk Präsentationen GbR

Creating VBA macros to organize project workflows and schedule staff.
Industry: office software.
Design, implementation in VBA, and testing.
Target system: Windows 7 or newer with Excel 2013.
Development tools: MS Excel 2013.

Jun 2015 - Aug 2015

3 months

VBA Developer

MOM

Creating VBA macros to simplify invoice generation.
Industry: office software.
Project organization: complex single project.
Design, implementation in VBA, and deployment.
Target system: Windows 7 or newer with Excel 2013.
Development tools: MS Excel 2013.

Apr 2015 - Sep 2015

6 months

C++ Software Developer

Aidoo Software GmbH

Assisting the development team with implementing new features for management software for sports and recreational facilities in C++.
Industry: office software.
Project organization: traditional.
Design and implementation of a module for flexible chart rendering with Cairo (defining specifications with the client, implementation).
Implementing a DLL with Qt for easy display of geolocation data in Google Maps using C and JavaScript.
Extending existing software modules.
Integrating the banking module from Windata (windata black box).
Frontend: customizing the user interface with Qt.
Target system: Windows 7 or newer.
Development tools: Borland C++ Builder 4, Qt 5.5, Cairo 1.14.2, Doxygen.

Oct 2014 - Mar 2015

6 months

C# Developer

casenio AG

Creating a C# application to communicate with various home automation modules via Z-Wave.
Industry: home automation.
Project organization: complex single project.
Research on Z-Wave and Open Z-Wave.
Analyzing the open-source implementation of demo software.
Implementing a preliminary version in C, evaluating the feasibility of the open-source concept.
Target systems: PC, ZME_UZB (USB Z-Wave interface), proprietary microcontroller board with embedded Linux.
Development tools: MS Visual Studio Express 2013, GCC, Doxygen.

Oct 2013 - Nov 2013

2 months

MS Outlook VBA Developer

Private project

Collection of macros for MS Outlook (VBA) to clean up the mailbox and securely view emails from unknown senders.
Industry: office software.
Specification, design, implementation, and deployment.
Minor adjustments to MS Outlook 2013.
Target system: Windows XP or newer with MS Outlook 2003/2013.
Development tools: MS Outlook 2003/2013, VBA.

Aug 2013 - Sep 2013

2 months

VBA Developer / OPC Specialist

H. Euen Schweisstechnik GmbH

Developed an OPC client in VBA to store process data transmitted by the OPC server, and a viewer to visualize the data in Excel files.
Industry: mechanical engineering.
Project organization: complex single project.
Consulting on target system selection.
Design, implementation, testing, and documentation.
Target system: OPC client: Windows XP with Excel 2003; viewer: Windows XP or Windows 7 with Excel 2003/2010/2013.
Development tools: Excel 2003/2010/2013, VBA, Siemens OPC DA Automation 2.0.

Feb 2013 - Sep 2014

1 year 8 months

MS Office Automation Developer

Private project

A collection of macros for MS Office to create business documents.
Industry: office software.
Phase (07/14 – 09/14): further development: unified interface, integration of Outlook contacts, extension of existing modules and templates, creation of additional modules and templates.
Phase (02/13 – 04/13): implementation of core functionality.
Specification, design, implementation in VBA and AHK, and deployment.
Target system: Windows XP or newer with MS Office 2003, 2013.
Development tools: MS Office 2003, 2013, VBA, AHK.

Sep 2012 - Jun 2014

1 year 10 months

Android App Developer

Private project

Mobile application for scoring a game of boules (measuring distance between balls).
Industry: mobile applications.
Specification, design, implementation in Java, and testing.
Implementation of necessary tools in C/C++.
Requirements: automatic detection of relevant objects in a photo; use of built-in sensors to prevent or correct distortion; calculation time max 10s (Samsung Galaxy S2).
Target system: mobile phone with Android 4.1.2 or newer.
Development tools: Eclipse, Java, Borland C++ Builder 5, custom tools.

Aug 2012 - Apr 2014

1 year 9 months

Software Developer (IEC 61131-3 / VBA)

Alstom Transport Deutschland GmbH

Software development according to IEC 61131-3 (ST, FBD) and creating/extending VBA macros (MS Office) to automate the development process.
Industry: rail vehicles.
Project organization: traditional, V-model.
Development of TCMS software in areas such as external signal lighting, tanks, spring accumulator brakes, diagnostics, sanding, and others.
Analysis, optimization, and testing of existing software components.
Design, implementation, and commissioning of new software components.
Document and code reviews.
Commissioning of new software components in the vehicle.
Target system: Compact PLC from Schneider Electric.
Development tools: MS Office 2010, Concept 2.6, Harvest.

Nov 2009 - Jul 2012

2 years 9 months

Software Developer (IEC 61131-3 / VBA)

Bombardier Transportation GmbH

Software development according to IEC 61131-3 (ST, FBD); optimizing existing VBA macros (MS Office).
Industry: rail vehicles.
Project organization: traditional, V-model.
Software development for rail vehicles in areas like drive/brake control, HVAC, passenger information systems, doors, visualization, HMI, and others.
Analysis, optimization, and testing of existing software components.
Design, implementation, and commissioning of new software components in the vehicle.
Specification and execution of white-box tests.
Analysis and resolution of detected errors.
Verification.
Document and code reviews.
Optimizing Excel macros to automate the development process.
Target system: soft PLC.
Development tools: MS Office, Visio, Rational ClearQuest, Enterprise Architect version 7.5, Mitrac CC (MTPE, MWT), Rational ClearCase, Rational Rose, MS Visual SourceSafe.

Mar 2008 - Aug 2008

6 months

Embedded Software Developer (C / Assembler)

3M Deutschland GmbH

Software development for a test module in the telecommunications field using C and assembly.
Industry: telecommunications.
Project organization: complex standalone project.
Analysis, optimization and testing of existing software components.
Design, implementation and commissioning of new software components.
Specification and execution of black-box and white-box tests.
Target system: embedded system with ARM9 microcontroller and Ecos operating system.
Development tools: Eclipse, Lauterbach Trace32, GCC, Cygwin, InnoTek VirtualBox, CVS, Debian Linux, Mantis.

Oct 2007 - Oct 2007

1 month

Trainer / Seminar Leader

MTS GmbH

Seminars on topics such as software development process, software testing and debugging, and programming techniques for robust, self-documenting code.
Needs assessment.
Preparation of seminar materials using MS PowerPoint.
Leading the seminars.

Aug 2006 - Aug 2007

1 year 1 month

Embedded Software Developer (C / C++)

Conergy AG

Software development for the controller of a photovoltaic system in C and C++.
Industry: renewable energy.
Project organization: complex standalone project.
Analysis, documentation and testing of existing software components.
Refactoring and optimization using object-oriented software structures.
Document and code reviews.
Specification, design, implementation and commissioning of new software components.
Target system: embedded system with ARM7 microcontroller and Ecos operating system.
Development tools: GCC, Cygwin, Lauterbach Trace32, Peak PCAN Explorer, proprietary tools, MS Office 2003, SVN.

May 2006 - Jun 2006

2 months

MS Office VBA Developer

Privates Projekt

Macros for MS Office to manage and prepare member data of a recreational club.
Industry: office software.
Target system: PC with MS Office 2003.
Development tools used: MS Office 2003, VBA.

Jan 2006 - Jan 2011

5 years 1 month

Software Developer (IEC 61131-3)

H. Euen Schweisstechnik GmbH

Software development according to IEC 61131-3 (ST, SFC, IL) for automated carriers and welding systems.
Industry: mechanical engineering.
Subproject (09/10 – 01/11): welding head for gas-shielded welding.
Subproject (09/10 – 10/10): trade fair demo device.
Subproject (12/09 – 09/10): automated carrier for surfacing welding.
Subproject (02/10 – 08/10): additional functionality for automated carriers for submerged arc and MAG welding.
Subproject (12/08 – 12/09): automated carriers for submerged arc and MAG welding.
Subproject (06/09 – 08/09): small torch stand with two motors and turntable for TIG welding.
Subproject (10/08 – 03/09): system for welding pipes.
Subproject (04/06 – 05/06): welding portal.
Subproject (01/06 – 03/06): rotary swivel table for welding systems.
Project organization: complex standalone project.
Clarifying requirements together with the client.
Consulting on the selection of suitable sensors.
Design, implementation, testing and commissioning of the software.
Target system: various EPIS PLCs, Beckhoff modules, Nord frequency converters of the SK 5xx family (for controlling asynchronous motors), Metronix servo controllers of the ARS 2xxx family (for controlling servo motors).
Development tools: GRIPS_cp, Metronix ServoCommander, Peak PCAN-Explorer.

Jul 2005 - Jan 2006

7 months

Embedded Software Developer (C / Assembler)

X-Spex GmbH

Software development for a mobile digital audio device in C and Assembler.
Industry: consumer electronics.
Project organization: traditional.
Analyzed existing software, optimized code size and speed, replaced C functions with assembly.
Designed and implemented new features in C and Assembler.
Commissioned new software modules.
Code reviews.
Target system: embedded system with ARM9 microcontroller and proprietary OS.
Development tools: MS Visual Studio, Arm Development Suite 1.2, Codewarrior, CVS, CygWin.

May 2004 - Feb 2006

1 year 10 months

Embedded C Developer

Peucon GmbH

Implemented various software modules for 8051-based embedded systems in C.
Industry: telecommunications.
Subproject (09/04 – 02/06): implemented the wireless protocol for a gaming console.
Subproject (05/04 – 09/04): developed the firmware for a Bluetooth GPS module.
Project organization: traditional, CI/CD.
Gathered requirements together with the client.
Software concept, design, implementation, testing.
Document and code reviews.
Target system: 8051-based embedded system with Keil RTX-Tiny RTOS.
Development tools: Keil PK51, CVS.

Jan 2003 - Jul 2004

1 year 7 months

Software Developer (C / UML)

Enginion AG

Developed the software concept for the controller of a CHP plant and implemented it in C and UML.
Industry: renewable energy.
Contributed to defining the software development process.
Designed, implemented, and commissioned the system software in C and UML.
Commissioned the controller.
Document and code reviews.
Provided technical guidance to a student assistant.
Target system: PowerPC-based embedded system with proprietary OS.
Development tools: Borland C++ Builder 5, CanAlyzer, CanAPE, Matlab/Simulink, Eagle, Rational Rhapsody, Keil PK51.

Apr 2000 - Dec 2002

2 years 9 months

Embedded Software Engineer

Motorola GmbH

Developed embedded software in C for Tetra base stations.
Industry: telecommunications.
Software integration of new hardware.
Product improvements as well as debugging and bug fixing.
Expanded the existing software system in C.
Document and code reviews.
Other activities:
Led a process optimization team.
Developed product improvements aimed at patenting.
Target system: PowerPC platform with pSOS.
Development tools in a mixed Unix/Windows environment: ClearCase, PowerPC C compiler, proprietary tools, Vision ICE, MS Visual Studio.

Nov 1999 - Nov 1999

1 month

Software Developer

Peucon GmbH

Implemented Tetra Layer 1 channel coding to verify externally produced hardware.
Industry: telecommunications.
Project organization: complex single project.
Target system: PC.
Development tools: Borland C++ Builder 4.

Mar 1999 - Apr 1999

2 months

Embedded Systems Developer (In-house Development)

Private Project

In-house development: Rebuilt the Berlin Clock based on a 16C54A, programmed in assembly.
Requirements: Display time (minutes with 4+11 LEDs, hours with 4+4 LEDs, 2-second interval), set the time, generate the second tick yourself or derive it from the mains frequency.
Component selection, circuit design, layout, assembly, commissioning.
Specification and design of the operating software, implementation in assembly, commissioning.
Target system: Embedded system (SoC) with Microchip 16C54A, bare metal.
Development tools: Microchip MPAsm/MPSim, Eagle.

Aug 1998 - Oct 1998

3 months

Embedded Systems Developer / Windows Application Developer (In-house Development)

Private Project

In-house development: Reimplementation of the diploma thesis ("Development and programming of a grid-independent microcontroller system for capturing the position of transport containers via GPS and for GSM-based communication with a central computer.") using a modern microcontroller in C, and development of a Windows application in C for communication with the device.
Evaluation of used components and, if necessary, their replacement.
Circuit design, layout, assembly, and commissioning.
Porting of the system software (written in C) to the new system.
Implementation of Windows software for configuration and querying collected data.
Documentation of hardware and software.
Target systems: Embedded system with Atmel AVR ATmega103L, bare metal, and Windows 95/98.
Development tools: Eagle, IAR Embedded Workbench for Atmel AVR, Borland C++ Builder 3.

Jul 1998 - Mar 2000

1 year 9 months

Embedded Software Engineer (C / Assembly)

IAV GmbH

Development of embedded software in C and assembly for the control unit of an automated manual transmission.
Industry: Automotive.
Analysis, documentation, and improvement of existing software.
Specification of a new hardware module and integration into the existing system.
Collaboration on the system design of the control unit for an automated manual transmission (ASG).
Design, implementation, and commissioning of low-level software modules in C and assembly.
Specification of interfaces to third-party software components.
Code reviews.
Target system: Embedded systems based on MC68HC05 and MC68HC11.
Development tools: HC05/HC11 assembler/compiler, CVS, MS Office, Visio.

Feb 1994 - Jun 1998

4 years 5 months

Developer (Hardware/Software)

Peucon GmbH

Focus: Development tools for DECT.
Industry: Telecommunications.
Design of logic circuits for PLDs (PAL/GAL, Flex 8000).
Development of digital circuits, creation of schematics and PCB layouts.
Development of low-level software under DOS and Windows.
Preparation of project-related documentation.
Development tools: Eagle, Turbo C/Borland C, Orcad, PALASM, Altera design tool for Flex 8000.

Sep 1992 - Jan 1994

1 year 5 months

Developer (Hardware/Software)

Meta-Elektronik

Focus: PCB test systems.
Industry: Mechanical engineering.
Development of digital circuits and prototype assembly.
Creation of PCB layouts.
Development of low-level PC software in Pascal.
Implementation of visualization for the information gathered by the test system.
Development tools: Turbo Pascal / Borland Pascal, Eagle.

Summary

I have been passionate about electronics and computers since school. So it was only natural to combine both and, for example, control a model train or stereo system with a computer. Even now I enjoy working close to hardware, using a soldering iron and assembler if needed. I also like developing desktop software whose "world" ends at the keyboard and monitor. I find creating new software just as exciting as optimizing existing programs.

Languages

German

Native

English

Advanced

French

Elementary

Education

Apr 2000 - May 2004

Technical University of Applied Sciences Berlin

Diploma in Industrial Engineering · Industrial Engineering · Germany

Sep 1988 - Jun 1998

Technical University of Berlin

Diploma in Computer Science · Computer Science · Germany

Certifications & licenses

Development Consultant SAP NetWeaver `04 – Application Development Focus ABAP

SAP

Amateur radio license Class B

Driver's license Class 1 and 3

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