Volker Ahlers - Fullstack Developer for Angular & C#

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Mannheim, Germany

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Experience

May 2023 - Dec 2024

1 year 8 months

Fullstack Developer

RWE

Created an Angular/C# prototype as a template for new projects
Wiki documentation
Created a browser-based MS Power BI prototype dashboard for dynamic display and assembly of Power BI components from various reports with adjustable positioning, arrangement, and size
Technologies: C#, .NET Core, Entity Framework, Angular 16, Responsive web design
Performed C# and Angular updates
Migrated old C# versions to minimal hosting
Used PrimeNG and Angular Material
Analysis, effort estimation, planning, architecture, clean code, implementation, testing, documentation, and UX design
Used Azure DevOps and Docker
Used jQuery, PHP, MySQL, and MSSQL
Embedded Power BI in Angular and React with state handling via Signals
Video streaming in Angular

Mar 2022 - Oct 2022

8 months

Front-end Lead and Software Architect

Mercedes Benz Tech Innovation

Created a new internal automotive portal with Angular 13, RxJS, DevExtreme, .NET Core, HTML, CSS, and Bootstrap
Implemented unit tests
Analysis, effort estimation, planning, architecture, clean code, implementation, testing, documentation, and UX design
Used AngularJS
Developed with Visual Studio 2019

Aug 2021 - Jul 2022

1 year

Front-end Head, Part-time PO

Gourmet-Portal GmbH

Relaunched the Restaurant Rankings portal
Supported the Typo3 developer
HTML, CSS (latest version), JavaScript (jQuery)
Restructured Typo3 elements
Product Owner: synchronized and aligned communication with owners, designers, and the Typo3 developer in a part-time role
Used Zeplin, Visual Studio Code, and Git

Aug 2021 - Nov 2021

4 months

App Front-end Developer Angular

Generali

Developed, extended, maintained, and debugged a financial services app with Angular 12, TypeScript, JavaScript, JSON, HTML, SCSS, REST APIs, and NgRx
Scrum and agile process optimization
Defined user stories, prioritization, estimation, and sprint planning
Testing with Spectacular: creating test scenarios
Used Storybook: creating Storybook scenarios
Developed with Ionic Framework
Used GitHub for version control
Used IntelliJ and Zeplin

Apr 2021 - Jul 2021

4 months

Developer

Hannover Rück

Developed, extended, maintained, and debugged a web application for sanctions control in the insurance industry with Angular 12, TypeScript, JavaScript, JSON, HTML, SCSS, and REST APIs
Worked with a Kanban board and version control using Git
Used DevExtreme
Responsive Development
Testing and debugging
Used Microsoft Visual Studio and Visual Studio Code

Jan 2020 - Dec 2020

1 year

Software Engineer, Frontend Developer, C# Developer, Agile Scrum Coach

Hannover Rück

Fullstack development with focus on frontend in C#, .NET, Razor, DevExtreme and DevExtreme Grid
Forms with Razor and DevExtreme
Angular 9, responsive design, jQuery, JavaScript, JSON, HTML, CSS, Less, TypeScript and Node.js
Scrum introduction, Scrum and DevOps coaching
Process optimization: defining user stories, prioritization, estimation and sprint planning
Use of Azure, Azure DevOps and Azure deployment pipelines for CI/CD
Implementation of a Selenium test system in C# with NUnit: refining test cases, building test suites, acceptance, regression and integration tests
Integration of test tools into the continuous delivery system
Test data creation, debugging, performance measurement and versioning with Git and TFS
Test documentation using Azure Wiki

Sep 2019 - Dec 2019

4 months

Developer

Nevartos AG

Further development and redesign of an online gallery with .NET and Bootstrap 4
Use and adaptation of cropper.js
Responsive web design
Image rendering
Version control with Git
Development in IntelliJ and Visual Studio

Aug 2019 - Aug 2019

1 month

UX Consultant

Deutsches Krebsforschungsinstitut Heidelberg

UX design, UX architecture, analysis and consulting
Mediation between different stakeholders to gather requirements
Creating a mockup for an interface to graphically build complex scientific database queries for doctors
Use of Balsamiq

Jan 2019 - Apr 2019

4 months

Frontend Developer

hmmh multimediahaus AG

Frontend development with HTML, CSS, Less and ES6 JavaScript
Vanilla JS, Kanban, Scrum and requirement engineering
Creating specifications, estimation and customer support
Working with Hybris and JSP
Development in JetBrains IntelliJ IDEA

Mar 2017 - Oct 2018

1 year 8 months

Frontend on .NET, C#

Regiocom

Creation of a registration and management tool for a German authority
Web frontends in C# .NET and frontend logic with jQuery and JavaScript
Tests with Jasmine and debugging
Use of Kendo UI
Agile approach with Scrum: planning, task breakdown and requirements analysis
Version control with Git/SVN
Testing with Jasmine/Karma
Development with Visual Studio

Mar 2017 - Feb 2018

1 year

Software Developer

Crowdcode GmbH & Co. KG

Created a custom in-house Bootstrap library based on Java and Bootstrap-GWT
Made adjustments with GWT
Responsive design using Bootstrap 3
HTML, CSS, and Less
Development in IntelliJ

Oct 2015 - Feb 2017

1 year 5 months

Frontend Developer, Selenium Developer

Proximity Germany GmbH

Adapted and built frontends for desktop, mobile, and webview apps (iOS, Android) using HTML5, CSS3, JavaScript, jQuery, and SASS
Debugged and maintained the test environment with Java and Selenium
Automated frontend testing using Selenium and Grunt
Scrum process: refinement, planning, and task breakdown
Database queries with MySQL
Project based on Hybris
CI/CD with GitLab/Jenkins pipelines
Created landing pages
Development in Eclipse and WebStorm

Jun 2015 - Oct 2015

5 months

Developer

Bayer CropScience Deutschland GmbH

Developed an application for weather and satellite data using Bootstrap 3
Displayed charts and data on Google Maps using Leaflet
Tool analysis
Backend with PHP and PostgreSQL for data management and statistical analysis
Created a reusable scientific prototype with Zonar and AmCharts

Jun 2014 - Apr 2016

1 year 11 months

Frontend Developer

RI-Solutions GmbH

Rebuilt the entire frontend for a new platform on Java and Hybris
Developed the frontend for desktop and mobile with responsive design
HTML5, CSS3, Less, Grunt, jQuery, and Bootstrap 3
GWT UI and AJAX
Version control with Git and Jira
Scrum and documentation in Confluence

Jan 2014 - May 2014

5 months

Frontend Developer

Sinnerschrader

Adapted and built the front end of the ePlus webshop based on Java and Hybris
HTML5, CSS3, Less, JSP, jQuery, jQuery UI, AJAX, and Google Captcha
Version control with Git and Jira
Scrum

Nov 2013 - Dec 2013

2 months

Frontend Developer

Virtual Identity

Created frontend templates for various small projects
HTML5, CSS3, JavaScript, jQuery, PHP, WordPress, and responsive design

Jun 2013 - Oct 2013

5 months

Frontend Developer

Gruner + Jahr

Developed an editorial tool (OSKAR) for media based on Java/Spring
Frontend with AngularJS and Twitter Bootstrap
Programmed TinyMCE plugins
Customized Dropzone and JCrop
Backend: adapted REST classes in Java and PHP bug fixes for kino.de
Documentation in Confluence
Version control with Git and SVN
Scrum

May 2013 - Jun 2013

2 months

Software Architect (JS), Developer

Lebensmittel Edeka

Created a dynamically generated frontend for Windows XP users using JavaScript and JSON
Table structure with JS Tablesorter 2.0
Documentation with JSDoc
Control via JavaScript and configuration through JSON file
HTML, CSS, Twitter Bootstrap, and jQuery UI

Mar 2013 - May 2013

3 months

Lecturer

Fachhochschule Heidelberg

Guest lecturer for web technologies with assessments (exam) and evaluations
Topics: HTML, HTML5, CSS, CSS3, jQuery, AJAX, JavaScript, and PHP

Feb 2013 - Feb 2013

1 month

Fullstack Developer

Stadt Wilich

Migrated a city portal into a Pimcore/Zend/MySQL system
Designed and created database structures
Pimcore, Apache 2, PHP5, MySQL, Propel
jQuery, AJAX, JavaScript, HTML, and CSS3
Version control with SVN

Jul 2010 - Dec 2012

2 years 6 months

Fullstack Developer, UX Consultant, Partial Team Lead

Netrada Holding GmbH

Extension and internationalization of the checkouts for two large fashion portals
Pixel-perfect implementation of the frontend according to design templates
UX consulting for special requests from new countries
Feasibility analyses, planning, and implementation of new features
Backend: administration of database systems, configuration, and language data in PHP
Onboarding new freelancers and partial team leadership
Implementation and maintenance of Webtrekk
Documentation in Jira/Confluence

Apr 2010 - May 2010

2 months

Developer, Analyst

Teléfonica, o2, Codevise Solutions Ltd

Creation of a registration process optimized for the new iPad
Servlet analysis, usability planning, frontend in HTML and CSS
Coordination with the Java backend

Oct 2009 - Jan 2010

4 months

Fullstack Developer

1&1

Analysis of existing software to extend Jimdo
Development and bug fixing of in-house modules
Data transformation with Bash on Linux
PHP5, JavaScript, AJAX, jQuery, JSON, Bash, HTML, CSS, and MySQL

Sep 2008 - Sep 2009

1 year 1 month

Junior Developer in a permanent position

i42 Informationsmanagement GmbH

Design and development of complex websites and webshops (eCommerce)
Automated database synchronization
Data import, management, and processing with Bash and MySQL
Bash backend programming and Linux server setup

Dec 2007 - Aug 2008

9 months

Entry-level Developer in a permanent position

Axintos Software GmbH

Development of company websites
Administration and synchronization of corporate servers
OpenCMS, Typo3, Photoshop, HTML, CSS, JSP, Java, PHP, XML, XSLT, Flash, and xtCommerce

Jun 2006 - Nov 2006

6 months

Intern

F&U Kg

Design and development of an online administrative software with various access permissions and automated commission billing in PHP and HTML (CSS)
eCommerce, HTML, CSS, PHP5 and MySQL4

Sep 2004 - May 2007

2 years 9 months

Student

Heidelberg University of Applied Sciences

Design and implementation of various administrative software systems
Management of multimedia projects as a student project manager
Development of an intelligent online learning software with user tracking

Industry Experience

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

Experienced in Information Technology, Education, Retail, Fashion, Energy, and Insurance.

Information Technology

Education

Retail

Fashion

Energy

Insurance

Business Area Experience

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

Experienced in Information Technology, Product Development, Project Management, Quality Assurance, Business Intelligence, and Customer Service.

Information Technology

Product Development

Project Management

Quality Assurance

Business Intelligence

Customer Service

Skills

Frontend
Scrum Master
Ecommerce
Responsive Design
Ux
Html
Css
Jquery
Angular
Rxjs
Bootstrap
Devextreme
C#
Selenium
Docker
Responsive Web Design
Scss
Less
Javascript
Planning
User Stories
Communication
User Experience (Ux)
Typescript
React
Signals

Languages

German

Native

English

Advanced

Spanish

Intermediate

Education

Sep 2004 - May 2007

Heidelberg University of Applied Sciences

Diploma in Computer Science (FH) with a focus on Media Informatics · Computer Science, focusing on Media Informatics · Heidelberg, Germany

Certifications & licenses

DevOps Professional Certificate

Brainymotion, Mannheim

Alfatraining Education Center, Mannheim

Statistics

Experience

Total positions 27

Experience in Information Technology 5.5 y

Avg length 9 m

Longest experience 2 y 8 m

Expertise

Recent roles Fullstack Developer, Front-end Lead and Software Architect, Front-end Head, Part-time PO

Main industries Information Technology, Education, Retail

Main business areas Information Technology, Product Development, Project Management

Qualifications

Certifications earned 2

Profile

Created

January 2025

Last Update

May 2026

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Frequently asked questions

Have questions? Find more information here.

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

Volker speaks the following languages: German (Native), English (Advanced), Spanish (Intermediate).

Volker has at least 18 years of experience. During this time, Volker has worked in at least 19 different roles and for 26 different companies. The average length of individual experience is 1 year and 8 months. Note that Volker may not have shared all experience and actually has more experience.

Based on recent experience, Volker would be well-suited for roles such as: Fullstack Developer, Front-end Lead and Software Architect, Front-end Head, Part-time PO.

Volker's most recent position is Fullstack Developer at RWE.

In recent years, Volker has worked for RWE, Mercedes Benz Tech Innovation, Gourmet-Portal GmbH, and Generali.

Volker is most experienced in industries like Information Technology, Education, and Retail. Volker also has some experience in Fashion, Energy, and Government and Administration.

Volker is most experienced in business areas like Information Technology, Product Development, and Project Management. Volker also has some experience in Quality Assurance, Business Intelligence, and Customer Service.

Volker has recently worked in industries like Energy, Food and Beverage, and Automotive.

Volker has recently worked in business areas like Information Technology, Business Intelligence, and Product Development.

Volker attended Heidelberg University of Applied Sciences for Computer Science, focusing on Media Informatics.

Volker has 2 certificates. These include: DevOps Professional Certificate and Professional Scrum Master 1 (PSM I Certification).

Volker is immediately available full-time for suitable projects.

Daily Rate Distribution

0 2 4 6 8

<€640 €640-800 €800-960 €960-1120 €1440+

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.

Average rates for similar positions

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

1000

750

500

250

Daily rate avg. 880 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000

750

500

250

Median rate 960 €

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.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.