Volker Ahlers - Fullstack Developer

Recommended expert

Mannheim, Germany

Experience

May 2023 - Dec 2024

1 year 8 months

Fullstack Developer

RWE

Created an Angular/C# prototype as a template for adapting new projects
Wiki documentation
Built a browser-based MS Power BI prototype dashboard to dynamically display and assemble Power BI components from various reports, with adjustable positioning, arrangement, and size
Stack: 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
Performed analysis, effort estimation, planning, architecture, clean code, implementation, testing, documentation, and UX design
Used Azure DevOps and Docker
Used jQuery, PHP, MySQL, MSSQL
Embedded Power BI in Angular and React with state handling using Signals
Implemented video streaming in Angular

Mar 2022 - Oct 2022

8 months

Front-End Head and Software Architect

Mercedes Benz Tech Innovation

Developed a new internal automotive portal using Angular 13, RxJS, DevExtreme, .NET Core, HTML, CSS, and Bootstrap
Implemented unit tests
Performed 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

Frontend Head, Part-time Product Owner

Gourmet-Portal GmbH

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

Aug 2021 - Nov 2021

4 months

Angular App Frontend Developer

Generali

Developed, extended, maintained, and debugged a financial services app using Angular 12, TypeScript, JavaScript, JSON, HTML, SCSS, REST APIs, and NgRx
Optimized scrum and agile processes
Defined user stories, prioritized, estimated, and planned sprints
Tested with Spectacular: created test scenarios
Used Storybook: created Storybook scenarios
Developed with the Ionic Framework
Managed version control with GitHub
Used IntelliJ and Zeplin

Apr 2021 - Jul 2021

4 months

Developer

Hannover Rück

Developed, extended, maintained, and debugged a web application for sanction screening in the insurance sector using Angular 12, TypeScript, JavaScript, JSON, HTML, SCSS, and REST APIs
Worked with a Kanban board and managed version control with Git
Used DevExtreme
Performed responsive development
Conducted 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

Full-stack development focusing 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 implementation, 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 the test tools into the continuous delivery system
Test data creation, debugging, performance measurement and version control 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 various stakeholders to gather requirements
Creation of a mockup for a graphical interface to 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
Specification creation, 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 government agency
Web frontends in C# .NET and frontend logic with jQuery and JavaScript
Testing 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 with Bootstrap 3
HTML, CSS and Less
Development in IntelliJ

Oct 2015 - Feb 2017

1 year 5 months

Frontend Developer, Selenium Developer

Proximity Germany GmbH

Frontend customization and creation 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 with Selenium and Grunt
Scrum process: refinement, planning and task breakdown
Database queries with MySQL
Project based on Hybris
CI/CD with GitLab/Jenkins pipelines
Creation of 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 with Bootstrap 3
Displayed charts and data on Google Maps with 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

Complete rebuild of a frontend for a new platform on Java and Hybris
Frontend creation 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

Frontend customization and development of the ePlus web shop 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

Developed 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

Created an editorial tool (OSKAR) for media based on Java/Spring
Frontend using AngularJS and Twitter Bootstrap
Developed TinyMCE plugins
Customized Dropzone and JCrop
Backend: Adapted REST classes in Java and fixed PHP bugs 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

Developed 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 via JSON file
HTML, CSS, Twitter Bootstrap and jQuery UI

Mar 2013 - May 2013

3 months

Lecturer

Fachhochschule Heidelberg

Guest lecturer for web technologies with a written exam and evaluation
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, PHP 5, 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

Expansion and internationalization of the checkouts for two major fashion portals
Pixel-perfect front-end implementation according to design templates
UX consulting for special requests in new countries
Feasibility analysis, planning, and implementation of new features
Backend: database system administration, configuration, and language data in PHP
Onboarding of 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 optimized for the new iPad
Servlet analysis, usability planning, front-end 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 (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 (permanent position)

Axintos Software GmbH

Development of websites for businesses
Company server administration and synchronization
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 administration software with different 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

Fachhochschule Heidelberg

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

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

FH Diploma in Computer Science, focus on Media Informatics · Computer Science, focus on Media Informatics · Heidelberg, Germany

Certifications & licenses

DevOps Professional Certificate

Brainymotion, Mannheim

Professional Scrum Master I (PSM I)

Alfatraining Education Center Mannheim

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Gourmet-Portal GmbH

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Hannover Rück

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Hannover Rück

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Nevartos AG

UX Consultant

Deutsches Krebsforschungsinstitut Heidelberg

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hmmh multimediahaus AG

Frontend on .NET, C#

Regiocom

Software Developer

Crowdcode GmbH & Co. KG

Frontend Developer, Selenium Developer

Proximity Germany GmbH

Developer

Bayer CropScience Deutschland GmbH

Frontend Developer

RI-Solutions GmbH

Frontend Developer

Sinnerschrader

Frontend Developer

Virtual Identity

Frontend Developer

Gruner + Jahr

Software Architect (JS), Developer

Lebensmittel Edeka

Lecturer

Fachhochschule Heidelberg

Fullstack Developer

Stadt Wilich

Fullstack Developer, UX Consultant, Partial Team Lead

Netrada Holding GmbH

Developer, Analyst

Teléfonica, o2, Codevise Solutions Ltd

Fullstack Developer

1&1

Junior Developer (permanent position)

i42 Informationsmanagement GmbH

Entry-level Developer (permanent position)

Axintos Software GmbH

Intern

F&U Kg

Student

Fachhochschule Heidelberg

Skills

Languages

Education

Heidelberg University of Applied Sciences

FH Diploma in Computer Science, focus on Media Informatics · Computer Science, focus on Media Informatics · Heidelberg, Germany

Certifications & licenses

DevOps Professional Certificate

Brainymotion, Mannheim

Professional Scrum Master I (PSM I)

Alfatraining Education Center Mannheim

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