Recommended expert

Rainer Koloc

Course “Data and AI Analyst”

Rainer Koloc
Wolfsburg, Germany

Experience

Dec 2024 - Apr 2025
5 months

Course “Data and AI Analyst”

International University

Apr 2024 - Jul 2024
4 months

Test automation for financial process test suite

KfW

  • Test automation, test strategies, reporting, framework

  • Execution and continuous adjustment of the master test script

  • Maintenance and expansion of existing test scripts

  • Review and optimization of the test process

  • Code review of existing actions and shared components

  • Creation of new components based on user stories

  • Automated reporting from CSV and ALM data (Excel, REST API)

  • General user configuration for parallel work in ALM

  • Comparison script for locally stored ALM scripts

  • API library for IBM MQ (reading, writing, searching messages)

  • Micro Focus ALM, Micro Focus UFT

  • Databases

  • PowerShell

  • Excel, VBS

  • ALM REST API

  • IBM MQ

Nov 2023 - Mar 2024
5 months

Advanced training and certification as AI Consultant

gruender.de

  • 3-month course with certificate
  • Analysis and optimization of business processes through AI
  • Overview of current AI technologies and tools
  • Methods for data analysis and pattern recognition
  • Development and implementation of AI strategies
  • ChatGPT, Midjourney, Canva, etc.
  • Certificate (AI Consultant)
Jun 2022 - Oct 2023
1 year 5 months
Wolfsburg, Germany

Test management and regression testing for migration project

Volkswagen AG

  • Test strategy, test concept, test automation, visualization

  • Creating test concepts, test planning

  • Development of a Python framework for regression testing and visualization

  • Team: building test case base, reviewing test results, reporting

  • Python, Codebeamer, Jira, Tasktop

Jan 2022 - May 2022
5 months
Wolfsburg, Germany

Visualization of server states with Elastic Stack

Volkswagen AG

  • Log analysis and visualization of server states

  • Creation of Python scripts for log state analysis

  • Automated deployment for servers in the infrastructure

  • Groovy, Elastic Stack, Python

Sep 2021 - Dec 2021
4 months
Wolfsburg, Germany

IoT in Azure environment

Volkswagen AG

  • Querying sensor data

  • Configuring and querying IoT components in Azure

  • Azure, PowerBI, Docker, Kubernetes, Python

Mar 2021 - Aug 2021
6 months

Procurement assistant (internal project study)

Rainer Koloc

  • Creating a platform for coordinating purchases during a pandemic

  • Planning, designing, defining roles and processes

  • Building a simulator

  • Groovy, MySQL database, Drupal CMS

Oct 2020 - Feb 2021
5 months
Wolfsburg, Germany

Operational concept for Azure Cloud Platform

Volkswagen AG

  • Analyzing operational processes and cloud provisioning

  • Reviewing the previous cloud platform

  • Developing the operational concept for the new Azure platform

  • Test deployments and provisioning with Terraform

  • Azure, Terraform

Jul 2020 - Sep 2020
3 months

Development of test engine for workflows

Rainer Koloc

  • Automated requests for regression and load testing

  • Developing a test engine for defined workflows (Groovy)

  • Automatic template generation from WSDL

  • Automatic request generation based on WSDL and test data

  • Developing load tests (PowerShell)

  • Regression test reporting

  • Groovy, PowerShell, REST, WSDL, Excel API

Apr 2020 - Jun 2020
3 months

Trading system development

Rainer Koloc

  • Forecasting currency exchange rates based on linked trading signals

  • Developing the framework and evaluation algorithm

  • Automatic image analysis of chart graphics

  • Evaluating signals from multiple investing sources

  • Real-time reporting of results as an HTML page

  • Selenium

  • Groovy, Python, JavaScript

  • Domain-specific language

  • Excel API

Apr 2019 - Mar 2020
1 year
Wolfsburg, Germany

SAP System Test Automation

Volkswagen AG

  • Replacing proprietary systems (materials management, procurement, logistics)

  • SAP system test automation

  • Developing and adapting test cases

  • Adjusting test data

  • Maintaining test users

  • Developing Groovy scripts for analysis and reporting

  • SAP

  • HP ALM

  • HP UFT/Repositories

  • HP UFT Business Components

  • HP ALM Business Processes

  • HP ALM Excel Queries

  • Continuous Development

  • Groovy

Jan 2018 - Mar 2019
1 year 3 months
Wolfsburg, Germany

Process Automation Test Engine

Volkswagen AG

  • Migrating from HTTP to MQTT protocol, token generator

  • Developing ALM test case importer for DSL-based test framework

  • Developing token generator (Powershell)

  • Developing tools for MQTT protocol (C, Java)

  • Automated creation of test configurations (HP OTA API)

  • MQTT

  • HP ALM

  • HP UFT

  • HP OTA API

  • HP Business Components

  • VBScript, VBA

  • Powershell

  • Eclipse

  • Domain Specific Language

  • Git, Bamboo, Jenkins, Maven

Sep 2017 - Nov 2017
3 months
Germany

Test Automation Java/Swing Client with UFT

Security Authority

  • Automating functional test cases using HP UFT

  • Executing and documenting functional tests

  • Consulting on the use of HP UFT and HP ALM

  • HP ALM, HP UFT

  • Groovy, Java, Swing

Jan 2017 - Aug 2017
8 months

Home Automation Product Development

Rainer Koloc

  • Internal product study

  • Market analysis

  • Process architecture

  • Tool analysis/selection

  • Test concept

  • Developing prototype

  • Raspbian (Raspberry Pi), sensors, actuators

  • Groovy, Gradle, Scala

  • Selenium

Jan 2017 - May 2017
5 months

Quality Management and Process Automation Consulting

Rainer Koloc

  • Support services in process automation and quality management

  • Automated data analysis and automated reporting

  • Automated test case generation from requirement documents

  • Assessing process quality in an agile team

  • Analyzing vehicle data and relational integrity

  • Groovy, Gradle

  • Excel-API

Oct 2016 - Dec 2016
3 months
Wolfsburg, Germany

Test management and test automation CWP

Volkswagen AG

  • Test management and test automation Mobile Online Services Customer Web Portal

  • Development of Groovy scripts for analyzing the backend vehicle lists

  • HP ALM, HP QTP

  • VBS

Feb 2016 - Jul 2016
6 months
Wolfsburg, Germany

Migration and validation of vehicle model variants

Volkswagen AG

  • Development of a test framework for vehicle-related services

  • Automated validation of migrated vehicle variants

  • HP ALM

  • Groovy

  • Excel-API

  • REST, XML

Jan 2015 - Present
11 years 2 months

Independent software developer / test automator

Rainer Koloc

  • Application and framework development
  • Testing (Frontend, Backend, end-to-end)
  • Test and process automation
  • Cloud and IoT
  • Generative AI and LLMs
Jan 2015 - Dec 2015
1 year
Wolfsburg, Germany

Project management and test management MIB test lab pilot

Volkswagen AG

  • Project management, test management, development, QA of REST services and web-based applications

  • Process automation, image analysis (frame grabber, OCR)

  • Development of a keyword-based test framework

  • HP ALM, HP UFT

  • Groovy/UNIX scripts

  • Excel-API

  • VAPI-XP

  • REST

Oct 2014 - Dec 2014
3 months
Wolfsburg, Germany

Test automation backend Customer Web Portal

Volkswagen AG

Jul 2012 - Sep 2014
2 years 3 months
Wolfsburg, Germany

Process optimization for license management and report generation

Volkswagen AG

Jan 2011 - Jun 2012
1 year 6 months
Wolfsburg, Germany

Test automation for telematics vehicle fleet

Volkswagen AG

Jun 2009 - Dec 2010
1 year 7 months
Wolfsburg, Germany

Test automation for web components and backends

Volkswagen AG

Jan 2009 - May 2009
5 months
Wolfsburg, Germany

Test automation for web application

Volkswagen AG

Jan 2007 - Dec 2008
2 years
Wolfsburg, Germany

Test automation for purchasing and procurement systems

Volkswagen AG

Jul 2005 - Dec 2006
1 year 6 months
Wolfsburg, Germany

Test Automation for Portal Technology VW-Portal

Volkswagen AG

Jan 2004 - Jun 2005
1 year 6 months
Bispingen, Germany

Embedded System Development

Brunel GmbH / Artis GmbH

  • Design and development of an object-oriented process framework for a real-time measurement data acquisition system

  • Development of architecture concept for base classes

  • Development of base classes (C++)

  • Development of process monitor (C++)

  • Database design/administration

  • C++, Jaluna C5, Chorus OS

  • Berkeley DB, SQLite, stored procedures

Artis GmbH developed PCI plug-in cards for control systems that could detect fault conditions in machine tools before machine damage occurred. The latest development was a PCI card (“ASV5”) that used a fast PowerPC processor, controlled by an embedded real-time operating system (Jaluna, Chorus OS) with a POSIX layer. My task was to detail and implement the existing design concept by creating requirement specifications for subprocesses. An important criterion was achieving a response time of 1-10 ms. I handled tasks in inter-process communication and database programming (including base classes, process state machine, MIPC, event handling).

Jul 2001 - Jul 2003
2 years 1 month
Braunschweig, Germany

Transrapid Development

Unilab Software GmbH / Siemens AG

  • Development of frontend framework for computer simulations, application development of control components

  • Development of central control components

  • Development of GUI framework (QT)

  • Development of process monitor

  • Database administration (Oracle RDBMS)

  • Server administration

  • Bash/Unix scripts, Insure

  • C, C++, Visual C++

  • Unix, QT, custom QT description language

The Transrapid was developed by Siemens AG and ThyssenKrupp Transrapid. Activities in the test and validation area included designing, programming, and testing software components for creating the computer model, generating user interfaces in QT based on a custom QT description language, and for component test environments of the test setup. In application development, the focus was on reengineering, code stabilization (Insure), automation of the software generation process, and remote control of the decentralized control computer.

Aug 2000 - Jun 2001
11 months

Insurance Form Process Development

Siemens SBS

Mar 1999 - Aug 2000
1 year 6 months
Wolfsburg, Germany

Dealer System Migration Development

Unilab Software GmbH / Volkswagen AG

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 (17.5 years), Information Technology (13 years), Manufacturing (3.5 years), Insurance (1 year), Education (0.5 years), and Banking and Finance (0.5 years).

Automotive
Information Technology
Manufacturing
Insurance
Education
Banking and Finance

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 (23 years), Quality Assurance (20.5 years), Product Development (14.5 years), Business Intelligence (3.5 years), Procurement (2 years), and Project Management (1 year).

Information Technology
Quality Assurance
Product Development
Business Intelligence
Procurement
Project Management

Summary

As an analytical team player with technical passion and curiosity, I blend creative approaches with practical execution – always aiming to noticeably boost quality and efficiency.

Skills

  • Application And Framework Development
  • Testing (Frontend, Backend, End-to-end)
  • Test And Process Automation
  • Cloud And Iot
  • Generative Ai And Llms
  • Automotive (Volkswagen Ag)
  • Transportation (Siemens Ag Transrapid)
  • Banking (Kfw)
  • Embedded Systems (Artis Gmbh)
  • Public Sector (Security Agency)
  • Smart Home / Iot / Ai Projects
  • Windows, Macos, Linux, Android
  • Raspbian (Raspberry Pi)
  • Embedded (Jaluna C5, Chorus Os)
  • Python, C/c++, Qt, Java, Groovy, Perl, Javascript
  • Bash, Vbs, Powershell
  • Html, Css, Xml, Qml, Wsdl, Json, Soap, Rest
  • Uml, Dsl (Domain-specific Languages)
  • Test Automation
  • Uft One & Loadrunner (Formerly Hp / Micro Focus / Opentext)
  • Hp Alm Rest Api, Hp Alm Ota Api
  • Selenium, Soapui, Postman
  • Framework Development
  • Devops, Ci/cd, Build Tools
  • Gitlab, Codebeamer, Jira, Confluence, Jenkins
  • Terraform, Azure Pipelines
  • Docker, Kubernetes
  • Data Analysis And Visualization
  • Elastic Stack (Elk: Elasticsearch, Logstash, Kibana)
  • Excel Api, Power Bi
  • Eclipse, Vs Code, Pycharm
  • Ibm Mq (Formerly Mq Series), Mqtt
  • Rest Apis
  • Microsoft Azure
  • Cloud Provisioning And Operational Concepts
  • Iot Platforms, Sensor Integration
  • Oracle Rdbms, Pl/sql
  • Postgresql, Mysql, Mariadb
  • Berkeley Db, Sqlite
  • Chatgpt, Stable Diffusion, Midjourney, Canva
  • Llm Development, Llm-based Rag System, Agentic Ai
  • Ai Strategies, Data Analysis
  • Agile (Scrum, Kanban)
  • V-model, Itil
  • Continuous Integration/delivery (Ci/cd)
  • Requirements Analysis, Test Strategy
  • Test Manager, Test Coordinator
  • Developer/automation Engineer
  • Data Analyst, Ai Consultant (Certified)

Languages

German
Native
English
Advanced

Education

Oct 1989 - Feb 1999

TU Braunschweig

Diploma in Computer Science · Computer Science · Braunschweig, Germany

Certifications & licenses

AI Consultant

gruender.de

ISQI Certified Agile Tester

ISTQB Advanced Level Test Manager

ISTQB Certified Tester

ISTQB Technical Test Analyst

ITIL Foundation Certificate

Sun Java 5 Certified Programmer

Profile

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Frequently asked questions

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

Where is Rainer based?

Rainer is based in Wolfsburg, Germany.

What languages does Rainer speak?

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

How many years of experience does Rainer have?

Rainer has at least 26 years of experience. During this time, Rainer has worked in at least 30 different roles and for 10 different companies. The average length of individual experience is 1 year and 11 months. Note that Rainer may not have shared all experience and actually has more experience.

What roles would Rainer be best suited for?

Based on recent experience, Rainer would be well-suited for roles such as: Course “Data and AI Analyst”, Test automation for financial process test suite, Advanced training and certification as AI Consultant.

What is Rainer's latest experience?

Rainer's most recent position is Course “Data and AI Analyst” at International University.

What companies has Rainer worked for in recent years?

In recent years, Rainer has worked for International University, KfW, gruender.de, Volkswagen AG, and Rainer Koloc.

Which industries is Rainer most experienced in?

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

Which business areas is Rainer most experienced in?

Rainer is most experienced in business areas like Information Technology (IT), Quality Assurance (QA), and Product Development. Rainer also has some experience in Business Intelligence, Procurement and Purchasing, and Project Management.

Which industries has Rainer worked in recently?

Rainer has recently worked in industries like Information Technology (IT), Automotive, and Education.

Which business areas has Rainer worked in recently?

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

What is Rainer's education?

Rainer holds a Master in Computer Science from TU Braunschweig.

Does Rainer have any certificates?

Rainer has 7 certificates. Among them, these include: AI Consultant, ISQI Certified Agile Tester, and ISTQB Advanced Level Test Manager.

What is the availability of Rainer?

Rainer is immediately available for suitable projects.

What is the rate of Rainer?

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

How to hire Rainer?

To hire Rainer, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Market avg: 770-930 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.