Ralph Kehmeier - Risk Management / Standards Compliance / Requirements Engineer

Q: Where is Ralph based?

Ralph is based in Mülheim an der Ruhr, Germany and prefers 100% remote projects.

Q: What languages does Ralph speak?

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

Q: How many years of experience does Ralph have?

Ralph has at least 16 years of experience. During this time, Ralph has worked in at least 3 different roles and for 12 different companies . The average length of individual experience is 1 year and 2 months . Note that Ralph may not have shared all experience and actually has more experience.

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

In recent years, Ralph has worked for Self-Schooling , Teiimo GmbH , Questax / HELLA GmbH & Co. KGaA , Seneos / Hitachi Astemo , and BBLeap .

Q: Which industries is Ralph most experienced in?

Ralph is most experienced in industries like Automotive , Manufacturing , and Healthcare .

Q: Which business areas is Ralph most experienced in?

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

Q: Which industries has Ralph worked in recently?

Ralph has recently worked in industries like Manufacturing , Automotive , and Healthcare .

Q: Which business areas has Ralph worked in recently?

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

Q: What is Ralph's education?

Ralph holds a Master in Business Administration from University of Texas at Dallas and a Bachelor in Electrical Engineering from University of Colorado at Boulder .

Recommended expert

Mülheim an der Ruhr, Germany

Experience

Mar 2025 - Present

1 year

Self-Schooling

PLC (Programmable Logic Controller)
LD (Ladder Diagram / Ladder Logic)
ST (Structured Text)
CodeSys

Nov 2023 - Oct 2024

1 year

Risk Management / Standards Compliance / Requirements Engineer

Teiimo GmbH

Risk management and standards compliance to develop and bring to market a medical device
Elicit requirements and copy into a database from common medical device industry standards such as ISO 13485, IEC 62304, ISO 14971, IEC 60601
Software tools: Greenlight Guru

Nov 2022 - Sep 2023

11 months

Requirements / System Engineer

Questax / HELLA GmbH & Co. KGaA

Requirements and system engineering for battery management system (BMS)
Work with DOORS system and diagnostics databases
Participate in requirements reviews
Software tools: DOORS Classic, PTC Integrity, Zedis Diagnostics Databank from BMW, ReqPat from Fraunhofer IEM

Feb 2022 - May 2022

4 months

Requirements Engineer

Seneos / Hitachi Astemo

Requirements engineering for an inverter for a VW electric vehicle according to ASPICE SYS.1 and SYS.2
Contributed to writing the Systems Engineering Management Plan (SEMP)

Feb 2021 - Sep 2021

8 months

BBLeap

Implemented a network socket for inter-process data communication between a Python program and a PLC in Structured Text
Software tools: Python, PLC Structured Text, CodeSys V3.5, Docker, Ubuntu Linux in Oracle VirtualBox, Slack, EPEC 6200 Remote Access Unit running Linux

Mar 2018 - Jan 2020

1 year 11 months

Requirements Engineer

APTIV Services Deutschland GmbH

Created and maintained diagnostic software requirements specification (ASPICE SWE.1)
Led SRS requirements review and participated in Diagnostic Product Definition Document (ASPICE SYS.2) review
Software tools: Doors, Jira, Confluence, BMW ZEDIS, Excel

Dec 2017 - Dec 2017

1 month

On-site

Brusa Electronics

Prepared in Sennwald, Switzerland and provided on-site training and consulting in automotive diagnostics for Inosa (Shenzhen Inovance Technology) in Shenzhen, China

Aug 2017 - Jan 2018

6 months

Preh GmbH

Entered diagnostics requirements into product specification in Doors
Maintained CAN database DBC file

Feb 2016 - Jun 2017

1 year 5 months

Küster Automotive

Developed and tested UDS diagnostics for Autosar shift-by-wire gear shift
Set up measurement diagnostics (DCM) and diagnostic events (DEM) in Tresos
Programmed freeze frames to be stored in NvM with device errors
Developed capability to store and automatically update a table of program variables in NvM according to software version
Software tools: CANoe, Elektrobit Tresos, Tortoise Subversion, Siemens Polarion ALM

Mar 2015 - Dec 2015

10 months

Behr-Hella Thermocontrol GmbH

Developed and tested UDS diagnostics for Autosar automobile air conditioner
Executed development and maintenance tasks in an IBM Rational Change database
Programmed measurement diagnostics, actuator tests, and routine control diagnostics
Tested diagnostics with VW Odis Test Program
Programmed and tested functions for Subbus diagnostics on LIN subbus

Dec 2013 - Dec 2014

1 year 1 month

ZF Friedrichshafen AG

Performed various development and test tasks for inverter power electronics using an Infineon Aurix multicore processor
Software tools: ClearCase version control, ClearQuest change management, Lint static code analyzer, Lauterbach Debugger, iSYSTEM Debugger, Vector Informatik CANape

Jan 2013 - Nov 2013

11 months

Behr-Hella Thermocontrol GmbH

Developed and tested UDS diagnostics for Autosar automobile air conditioner
Software tools: Telelogic Doors, MKS version control, IBM Rational Change, Lint, Vector Informatik CANoe, Elektrobit Tresos Studio

Jun 2011 - Dec 2012

1 year 7 months

Continental AG

Worked on blind spot detection radar sensor including customization of UDS diagnostic services and Autosar Diagnostics Event Manager (DEM)
Performed tasks for flash bootloader for driver assistance systems (ADAS)
Software tools: Telelogic Doors, IBM Rational Rhapsody, Eclipse, Vector Informatik CANoe, Vector Informatik GENy, Lauterbach JTAG Debugger, MKS Source Integrity, QAC Static Analyzer

Jul 2006 - Jun 2011

5 years

ZF Friedrichshafen AG

Integrated a standardized error diagnostics system into a transmission control program
Added CAN and SAE J1587 communications capabilities to a transmission control program
Analyzed a transmission control program using an in-circuit emulator
Performed comparative measurement of internal function runtimes using a self-developed Monte Carlo algorithm
Software tools: Microsoft Visual Studio, ClearCase, ClearQuest, Doors, Lint static code analyzer

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 Automotive (14 years), Manufacturing (1.5 years), and Healthcare (1 year).

Automotive

Manufacturing

Healthcare

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 Product Development (15.5 years), Quality Assurance (11.5 years), and Information Technology (3 years).

Product Development

Quality Assurance

Information Technology

Summary

PLC (Programmable Logic Controller)
LD (Ladder Diagram / Ladder Logic)
ST (Structured Text)
CodeSys

Languages

English

Native

German

Advanced

Education

University of Texas at Dallas

Master of Business Administration, Marketing · Business Administration · Dallas, United States

University of Colorado at Boulder

Bachelor of Science, Electrical Engineering · Electrical Engineering · Boulder, United States

Profile

Created

September 2025

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Frequently asked questions

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

Where is Ralph based?

Ralph is based in Mülheim an der Ruhr, Germany and prefers 100% remote projects.

What languages does Ralph speak?

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

How many years of experience does Ralph have?

Ralph has at least 16 years of experience. During this time, Ralph has worked in at least 3 different roles and for 12 different companies. The average length of individual experience is 1 year and 2 months. Note that Ralph may not have shared all experience and actually has more experience.

What roles would Ralph be best suited for?

Based on recent experience, Ralph would be well-suited for roles such as: Risk Management / Standards Compliance / Requirements Engineer, Requirements / System Engineer, Requirements Engineer.

What companies has Ralph worked for in recent years?

In recent years, Ralph has worked for Self-Schooling, Teiimo GmbH, Questax / HELLA GmbH & Co. KGaA, Seneos / Hitachi Astemo, and BBLeap.

Which industries is Ralph most experienced in?

Ralph is most experienced in industries like Automotive, Manufacturing, and Healthcare.

Which business areas is Ralph most experienced in?

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

Which industries has Ralph worked in recently?

Ralph has recently worked in industries like Manufacturing, Automotive, and Healthcare.

Which business areas has Ralph worked in recently?

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

What is Ralph's education?

Ralph holds a Master in Business Administration from University of Texas at Dallas and a Bachelor in Electrical Engineering from University of Colorado at Boulder.

What is the availability of Ralph?

Ralph is immediately available part-time for suitable projects.

What is the rate of Ralph?

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