Markus S.-Architecture, project management and development in the web technology environment

Technologies: Confluence, PlantUML, BPMN

• As part of the modernization of ING DiBa, the master data management system is also being renewed. As the Domain Architect for this topic, I had to find a way to combine global solution approaches from the headquarters in Amsterdam with local requirements from the German branch in Frankfurt.

Technologies: Docker, Spring Boot, Sonarqube, Java, AWS, Splunk, OICP, OCPI, eMIP

• The Porsche Charging Service (PCS) is the central element of Porsche’s eMobility concept. PCS is the key component of a Mobile Service Provider (MSP). Its main function is therefore the sale and billing of energy through charge point operators (CPOs). My primary focus was ensuring that the charging process worked smoothly. Due to the significant increase in the number of electric vehicles, the services supporting charging also had to grow substantially. This scaling was one of the highest-priority tasks. I was also responsible for redesigning and further developing the software, including the backend rollout and mobile app rollout, as well as analyzing errors. This also meant that I was responsible for a large part of the project management, as communication with the business department and sprint planning were part of my responsibilities.

Technologies: Kubernetes, Docker, Helm, Vault, Spring Boot, Consul, Sonarqube, Nexus, BPMN, Suse Enterprise Linux, SOA Architecture, JaCoCo

• The goal of the PSD Workflow Engine project was to replace the existing document workflow engine with a new service-oriented solution. This involved an approach based on an orchestrated microservice landscape. In my role as a DevOps consultant, I introduced reliable version control with semantic versioning using GitLab. I was responsible for the build, test (Sonarqube, JMeter) and deployment pipelines. I also designed and implemented the deployment chain and staging environment. The scripts used an artifact repository (Sonatype Nexus) and Helm charts to deploy to a small Kubernetes cluster, which was also under my responsibility.

• Another focus was the management of configurations and service discovery (HashiCorp Consul), as well as the secure provision of secrets (HashiCorp Vault). Deployment packages were assembled and archived from these artifacts at each stage, allowing versions to be restored in an audit-proof manner. I managed the entire project.

Technologies: ABAC, IAM, Microservices, Docker, OpenShift

• SRS NG is a platform for remote services intended for clinics and hospitals. This platform ensures a secure and reliable connection for maintenance and software rollouts. As the cross-system architect, my task was to design solutions for the system landscape (cloud), select third-party components, and moderate discussions between the software architects of the subsystems.

Technologies: Node.js, Java, JDBC, JSON, XML, XSD, API Design, REST, UML (Enterprise Architect), REST, SOA, SOAP, JSLint (CleanCode), Swift 3

• This project focused on collecting data fragments from different sources (standardized APIs via web services/SOAP), aggregating them, and processing them further. This data mostly originated from passenger car production. All relevant connections in a vehicle were logged for quality assurance. Since this software could be installed on a large number of systems, it was expected that the amount of collected data would also increase rapidly. For this reason, a scalable architecture and a “Big Data” concept were considered from the beginning.

• Naturally, it was also very important in this project to perform unit tests automatically (Continuous Testing / test automation / test-driven development / Jenkins). Compliance with the CleanCode rules was given particular importance during regular code reviews. This was reinforced by a clear guideline (Definition of Done).

• My responsibilities also included Scrum planning for sprints (including the backlog), retrospectives, and moderating the daily stand-ups. Since the PO (Product Owner) was based in Japan, it was important to precisely define the requirements with the Business Unit during regular communication.

• Project preparation, risk analysis, technology evaluation, and project documentation were also carried out by me in accordance with the client’s guidelines.

Technologies: GIT, Eclipse, XML, XSLT, CSS, HTML, Apache Sling, OSGi, JCR, Adobe CQ5, Oracle 11g, Spring, Selenium, Freemarker, Scrum

• The work packages included implementing dynamic content such as shopping cart functionality for downloadable assets, as well as generating XML output and processing it further into PDF.

Technologies: Oracle, JEE, Spring, RAD 8, IBM WebShere 8, JSF

• ASK2 – Audi Service Key 2

• The project aimed to improve service in workshops by storing vehicle data on the vehicle key. My responsibility covered the “Elsa Pro” component. The introduction of the Elsa-Pro web system at Volkswagen enables the worldwide coordination of processes and databases throughout the company’s sales network. By connecting databases and systems in the after-sales area of the Wolfsburg-based car manufacturer, the new Elsa-Pro system supports fast and customer-friendly order processing at an international level.

Technologies: JEE, Eclipse, XML, XSLT, Saxon, Jtopen, Apache http-Core, Jasper, Apache Mina, SOAP, JAX-B, JAX-RS, JAX-P, JMS, ESB, Hibernate, Spring, JavaDoc, EA

• The task required an analysis of the existing solution and the creation of a step-by-step migration strategy. By structuring and consolidating the requirements from the calling business units, a top-down concept was created that fully supported the new architecture in terms of scalability and performance. The MMI factor was also defined as one of the highest priorities during the design, as administrators in the regions had to be trained during the rollout. The technical planning focused particularly on high performance and a balanced structure. The implementation took place in close cooperation with the customer’s iSeries experts, resulting not only in a pure JEE platform but also taking the specific requirements of the AS/400 into account. My responsibilities therefore included not only development but also application design and system architecture, as well as negotiating data exchange formats between the application and the calling systems. Timely delivery also played a very important role. To achieve the best possible project control, weekly stand-up meetings were held to document progress within the project group and discuss the next steps and required effort. The Scrum methodology served as a model for this process.

Technologies: JEE, Eclipse, iText, Spring, SVN

• Since Toshiba offered retailers the option to compare products, a way to save the results had to be found. The goal was therefore to implement a PDF generator. My tasks included application design (system architecture), development and integration.

Technologies: JSP/JSF, Ajax, FOP, XSL-T, Javascript, IBM WebSphere 6, SVN

• Design, development

Technologies: Tomcat, Ajax, FOP, XSL-T, JavaScript, SVN

• Design, development

Technologies: Ant, Java, InnoSetup

• Design, development

Technologies: PHP5, Typo3

• Development

Technologies: iText, Spring, JPA, Hibernate Java, Eclipse

• Design, development

Technologies: JSP, Java, IBM WebSphere, Ajax, SOAP, Eclipse

• Design, development

Technologies: JSP, Java, Tomcat, Ajax, SOAP, Eclipse

• Concept and development

Technologies: PHP, Ajax, CMS, Map&Guide

• Development

Technologies: MS Office / MS Visio

• Concept, consulting, creation of requirements specifications

Technologies: JAVA, Postgres, XML, XSL-T, UltraEdit, Eclipse

• Development according to specifications

Technologies: CRYSTAL REPORTS, JAVA, Eclipse

• Concept, development, consulting

Technologies: JSP, MS SQL SERVER

• Design, development.

Technologies: JSP, JAVA, Struts, MS SQL SERVER, LDAP, FOP, SVG

• Design, development, consulting

• Setup of WAN networks.
• Integration of Microsoft Terminal Server.
• Maintenance of MS SQL servers.
• Maintenance of an enterprise resource planning system.
• Development of custom software.
• Maintenance of web applications.

Technologies: WAN, MS SQL SERVER, WWW, Typo3

• Design, development, consulting, maintenance

• Development of an online bingo game.
• Development of a content management system (Ingentum) based on XML and Java.
• Planning of an XSLT/XML editor.
• Setting up the internal network architecture.

Technologies: XSLT, XML, Java