Cloud- und Softwarearchitekt

6/2020 – 12/2021

Development of software for e-scooter rental

o Selection of the cloud provider
o Setup of the landing zone on AWS
o Design and architecture of the frontend, backend, and persistence layer
o Implementation of the rental functionality
o Implementation and integration of billing with a payment service provider
o Implementation of price calculation
o Implementation of e-scooter tracking

Technologies:
Java, Quarkus, React, TypeScript, NX, Node.js, Next.js, NPM, Keycloak, Visual Studio Code, Linux, macOS, Docker, Kubernetes, Jira, Confluence, Scrum

API-Entwickler, Go (Programmiersprache), JavaScript-Entwickler, Postgresql, React Native

11/2017 – 1/2021

Introduction of a cloud infrastructure for the development of new services, improvement and adaptation of existing systems, as well as the creation of a data lake.
o Consulting on the modernization of existing monolithic systems
o Architecture consulting for the implementation of microservices
o Selection and development of a cloud infrastructure (Openshift / Kubernetes)
o Migration of a cloud infrastructure to another provider (AppAgile to AWS)
o Setup of development and production platforms
o Architectural improvements for various existing systems
o Coaching of developers and DevOps teams
o Implementation of business features
o Developer reviews
o Design and implementation of the development and release process
o Selection of the cloud provider
o Creation of incidents and change requests
o Setup of the Kubernetes cluster and services on AWS
o Setup of monitoring
o Setup of logging
o Setup of IAM
o Setup of the persistence layer
o Setup of eventing
o Creation of PoCs for development
o Implementation of business services

Technologies:
Scrum, DDD, Java, Spring, Kubernetes/ OpenShift, Docker, Rancher, Terraform, Ansible, REST, Keycloak, HAProxy, AWX, AWS (RDS, EKS, Landing Zone, MSK, VPC, Transit Gateway, CloudWatch, GuardDuty, Amazon OpenSearch, SSO, IAM, Route53, EFK-Stack, Athena, S3, Visual Studio Code, IntelliJ, Red Hat Linux, macOS, Scrum, Jira, Confluence

Amazon Web Services (AWS), Confluence, Java (allg.), Jira, Kubernetes, Openshift, Red Hat Enterprise Linux (RHEL), Scrum, Spring Framework

1/2017 – 10/2017

Introduction of a private cloud and implementation of microservices used by the existing EDIFACT platform. In addition, the cloud infrastructure provides a platform for operating other projects. The goal of the cloud solution is to run applications in a highly available and scalable manner, as well as to replace or make parts of the existing EDIFACT system more flexible.
o Setup and administration of an OpenShift-based private cloud
o Design and implementation of microservices
o Creation of the build and deployment process for project-specific microservices and applications from other projects
o Coaching of other teams in creating build and deployment processes on the cloud infrastructure

Technologies:
Java, Kubernetes/ OpenShift, Docker, Vert.x, Spring, Tomcat, REST, Speedment, AngularJS, jQuery, Dojo, Javascript, Jenkins, Git, Gradle, PostgreSQL, IntelliJ, Rad Hat Linux, macOS, Scrum

Docker, Java-Entwickler, Java (allg.), JavaScript, Kubernetes, Openshift

1/2017 – 10/2017

Introduction of a private cloud and implementation of microservices used by the existing EDIFACT platform. In addition, the cloud infrastructure provides a platform for operating other projects. The goal of the cloud solution is to run applications in a highly available and scalable manner, as well as to replace or make parts of the existing EDIFACT system more flexible.
o Setup and administration of an OpenShift-based private cloud
o Design and implementation of microservices
o Creation of the build and deployment process for project-specific microservices and applications from other projects
o Coaching of other teams in creating build and deployment processes on the cloud infrastructure

Postgresql, Scrum, Docker, Gradle, Java (allg.), Red Hat Enterprise Linux (RHEL), Kubernetes, Openshift

9/2016 – 12/2016

Development of software for the approval and archiving of investment applications.
o Improvement of the software development process and the existing framework
o Coaching of the development team
o Optimization of Camunda BPMN usage
o Implementation of requirements
o Setup of new processes and coordination with the business department
o Bug fixing in the existing code

Technologies:
Java, Java EE, Spring, JHipster, AngularJS, Docker, SaltStack, Comarch ERP, Jenkins, JUnit, XLT, JMeter, REST, Webservices, XML, XSLT, Git, Confluence, MS SQL, MariaDB/ MySQL, Nexus, Eclipse, Enterprise Architect, Kanban, Scrum

Apache Maven, Apache Tomcat, Git, Java (allg.), Jenkins, Postgresql, Red Hat Enterprise Linux (RHEL), Scrum-Master, Spring Framework

6/2015 – 8/2016

Spin-off of IT systems from a E-commerce Group and establishment of an independent software landscape for a corporate subsidiary.
o Software architecture, technical contact, and developer for a newly developed procurement portal
o Implementation of the build and deployment process for the procurement portal using Docker and Salt Stack
o Implementation of various interfaces for the procurement portal using REST, SOAP, and XML
o Interface development and technical contact for invoice verification
o Design of the overall architecture for all EDIFACT interfaces
o Interface development and technical coordination for EDIFACT integration of procurement and invoice verification
o Execution, implementation, and support of testing for the procurement portal, invoice verification, and EDIFACT integrations
o Software architecture for the integration of Comarch ERP into the system landscape
o Introduction of Kanban within the architecture team

Technologies:
Java, Java EE, Spring, JHipster, AngularJS, Docker, SaltStack, Comarch ERP, Jenkins, JUnit, XLT, JMeter, REST, Webservices, XML, XSLT, Git, Confluence, MS SQL, MariaDB/ MySQL, Nexus, Eclipse, Enterprise Architect, Kanban, Scrum

AngularJS, Docker, Java Database Connectivity, Jenkins, Kanban, Mariadb, Spring Framework, XML

7/2014 – 5/2015

Extension and decomposition of a bank’s software systems
o Design of a software architecture for componentization
o Introduction of Kanban in the payment applications department
o Implementation of business requirements in the payment processing domain
o Bug fixing and ticket handling
o Execution of refactorings to improve software quality
o Consulting on improvements to the software development process

Technologies:
Java, Java EE, Spring, Windows, JPA, Hibernate, JSF, RichFaces, Facelets, XHTML, HTML, CSS, REST / Webservices, JMS, JBoss Application Server, Tomcat, UML, Enterprise Architect, Oracle Datenbank, EJB 3, JUnit, Emma, Checkstyle, FindBugs, PDM, XML, JSON, PL/SQL, Gradle, Maven, Ant, Ivy, Git, Jenkins, Jira, Confluence, Enterprise Architect

Gradle, Java (allg.), Spring Framework, UML, XML