About

Work Experience

• Owner / General Manager, BITS BAUER - Business IT Services BAUER

  Apr, 2007 - Present

  At BITS BAUER, you receive customized software solutions for your specific requirements. Our network of skilled developers covers all areas of software development, from app development to API development.

• Senior Full Stack Software Developer, Aveyara Software GmbH

  Aug, 2024 - Apr, 20259 months

  Full stack development and technical consulting for a modern web platform in the public education sector. Design and implementation of digital service application workflows, integration of external systems, and development of reusable frontend components.

  • Technical co-design and full stack development of the BEA platform for the Ministry of Education Baden-Württemberg

  • Conception and implementation of school registration and service application processes

  • Integration of external educational services via REST APIs

  • Authentication via OpenID Connect and Social Login using Laravel Socialite

  • Frontend development with React, Zustand, Tailwind CSS, TanStack Query and i18n

  • Implementation of a multilingual, responsive user interface

  • High test coverage through Pest, Jest and Playwright

  • Setup of a local Docker development environment

  • Collaboration and deployment pipeline setup with Azure DevOps

• IT Consultant / Senior Full Stack Software Developer, LocalPerformance GmbH

  Feb, 2015 - Present

  Comprehensive IT consulting as well as development and support of customized software. Development of APIs and services. Database management. For example, advice on architecture and technology issues or further development and support of applications.

  • Analysis of existing systems and processes

  • Determination of requirements and solution design

  • Support with implementation

  • Development and support of the extensive reporting, customer and campaign management application based on Symfony and MariaDB

  • Implementing the connection of additional services via APIs

  • Creating an API for access by customers

  • Data import and aggregation from e.g. Google Ads and Facebook

  • Development of a REST/GraphQL API as a backend for the second generation reporting and management application, based on Symfony, PostgreSQL and API Platform

  • Creating the Docker development environment

  • Evaluation of GPC, Heroku and Platform.sh as PaaS

  • Configuration and support of the deployment on Platform.sh

  • Implementing microservices for imports and mailings

• Senior Full Stack Software Developer, Codetopia GmbH

  Mar, 2024 - Jul, 20245 months

  Development of a Next.js app as a status monitor for the visualization of transformer measurement data.

  • Implementing the UI and visualizations

  • Integration and interaction with an API interface for the measured values

  • Defining and using configuration settings on the respective end devices

  • Use of Docker for development and deployment on the respective end devices

• Senior Frontend Software Developer, GroupM Germany

  Aug, 2019 - Feb, 20244 years 7 months

  Agile front-end development for internal tools and services. One example is the development of a React app for the management and evaluation of marketing campaigns. Another example is the development of a two-part B2B React app for the creation, administration and delivery of questionnaires.

  • Implementation of Okta authentication

  • Integration and interaction with a Java backend

  • Implementing a wizard to manage the campaigns

  • Use of HighCharts for the evaluations

  • Dynamic configuration of the campaigns via HighCharts

  • Use of React Toolkit with RTK Query

  • Extensive form logic via React Hook Form

  • Implement wizards for creating and editing

  • Implementing data tables for the overviews

  • Use of Docker, Kubernetes and GitLab CI for development and deployment

• Senior Full Stack Software Developer, NEW WORK DIGITAL GmbH

  Dec, 2022 - Feb, 20229 months

  Implementation of a Shopware 6 extension as an interface to the customer's software solution.

  • Setting up a development and test environment with Docker

  • Implementing the authentication

  • Design and implementation of the configuration page

  • Implementing the form logic

• Senior Full Stack Software Developer, NEW WORK DIGITAL GmbH

  May, 2021 - Dec, 20221 year 8 months

  Agile development of a complex e-commerce store based on Symfony for a global market leader in the field of environmental and safety technology. Interaction with Commercetools, SAP and microservices on an extensive Kubernetes setup on Amazon AWS.

  • Development of backend components and microservices

  • Connection of external systems via APIs

  • Implementing new store features (graduated prices, vouchers, discounts)

  • Data exchange with the customer's SAP system (CRM data, orders)

  • Connection of payment providers such as Unzer, Stripe and PayPal

  • Connection to logistics providers such as ShipperHQ and Paqato

  • Connection of tax providers such as Avalara

  • Creation of microservices for processing messages, e.g. from SAP

  • Creation of microservices for various store logics

• Senior Full Stack Software Developer, CHECK24 Verbraucherportal

  Dec, 2018 - Mar, 20212 years 4 months

  Full stack web development on the back office tool for managing lawsuits in the emissions scandal.

  • Creation of a complex workflow

  • Implementation of wizards

  • Automated generation of documents with Latex

  • Automated generation and dispatch of mails

  • Extensive logging

  • Implementation of an invoice generator

  • Connection of LexOffice via API

• Senior Backend Software Developer, schalk&friends - Agentur für digitale Lösungen

  Oct, 2018 - Dec, 20183 months

  Implementation of a complex XML importer.

• Lead Full Stack Software Developer, Serviceplan Gruppe

  Jul, 2018 - Dec, 20186 months

  Complete development of a B2B campaign tool. Connection to CRM services.

• Senior Full Stack Software Developer, DELTA Umzüge GmbH

  May, 2017 - Apr, 20181 year

  Development of a relocation booking portal.

• Senior Full Stack Software Developer, schalk&friends - Agentur für digitale Lösungen

  Oct, 2017 - Feb, 20184 months

  Development of a building materials ordering service app.

• Senior Full Stack Software Developer, SPORT1 GmbH

  Apr, 2017 - Aug, 20175 months

  Development of various features for the web portal.

• Senior Full Stack Software Developer / IT Consultant, QUISMA GmbH – Part of GroupM Connect

  May, 2011 - Jul, 20176 years 3 months

  Leading development of an online marketing tracking application. Development of a RealTimeBidding proxy. Maintenance and expansion of a campaign management application. Development of a feed generator tool. And many more applications.

• Senior Frontend Software Developer, Cocomore AG

  Jan, 2015 - Mar, 20153 months

  Development of a browser-based JavaScript game.

• Senior Backend Software Engineer, Katawerx GmbH

  Dec, 2014 - Feb, 20153 months

  Customization of a media wiki.

• Senior Fullstack Software-Developer, LocalPerformance GmbH

  Jan, 2013 - Mar, 20141 year 3 months

  Development of an online marketing customer and campaign management software. Technology and architecture consulting.

• App Developer, AgroSolutions GmbH

  Feb, 2011 - May, 20114 months

  Development of a native Android app "Yara withdrawal calculator" for determining the nutrients in plants.

• Fullstack Software Developer, Booming GmbH

  Jul, 2008 - May, 20112 years 11 months

  Development of an online marketing tracking and reporting application.

• Full Stack Software Developer, Agrosolutions GmbH

  Oct, 2010 - Dec, 20103 months

  Further development and optimization of an agricultural machine configurator.

• Full Stack Software Engineer, esolut GmbH (aquarius Digital GmbH)

  Dec, 2007 - Jul, 20088 months

  Development of a website for sustainable consumption (www.utopia.de).

• Software Developer, Ulysses Management Rossmann & Donner GbR

  Mar, 2007 - Oct, 20078 months

  Development of an application for planning and managing trade fair events.

• Web Developer, RPE GmbH

  Jun, 2006 - May, 20071 year

  Web development of an internet auction platform specializing in patents.

• Web Developer, Sunny Systems GmbH

  Oct, 2002 - Apr, 20063 years 7 months

  Web development in the Web Operations & Services team to support the Hewlett Packard EMEA hp.com websites.

• Web Developer, nbsp GmbH

  May, 2001 - Apr, 20021 year

  ColdFusion programming and IT internship in various web projects

• Web Developer, IDG Webtech GmbH

  May, 2000 - Dec, 20007 months

  Working student in web programming with ColdFusion / HTMLWorking student in web programming with ColdFusion / HTML

• Trainee Webmaster / Web Developer, Computerwoche Verlag GmbH

  Oct, 1998 - Apr, 20001 year 7 months

  Webmaster trainee and IT internship in the field of web development at Computerwoche Verlag.

Skills

Education