Waldemar B. - Solution Architect

Vellmar, Germany

Experience

Apr 2023 - Jun 2023

3 months

Solution Architect

top it-services AG

Coordinating collaboration between the governance, network design, security and operations and development tools workstreams
Creating an infrastructure concept
Preparing the solution design
Tools: Kubernetes, Microsoft Word, StarUML

Oct 2022 - Mar 2023

6 months

Team Lead Java Development / DevOps

corporate connect GmbH

Coordinating development activities and moderating planning meetings
Modernizing the application for mapping purchasing processes
Analyzing, optimizing and consolidating existing CI pipelines
Supporting release preparation and rollout
Tools: Java 17, Spring Boot, ReactJS, Docker, Hibernate, JPA, GitHub, TravisCI

Jan 2022 - Present

4 years

IT Consultant / DevOps Architect

ekom21 KGRZ Hessen

Advising and supporting software development
Setting up the development environment
Setting up and optimizing pipelines (GitLab CI)
Conducting workshops (Event Storming, User Story Mapping)
Tools: Kubernetes, Java 11, Java 17, GitLab, Confluence, Harbor, Git, Helm, FluxCD

Jan 2022 - Sep 2022

9 months

DevOps Engineer / Build Manager

top it-services AG

Preparing and coordinating releases
Coordinating testing activities and error analysis
Optimizing CI/CD pipelines in Jenkins and GitLab
Tools: Kubernetes, Jenkins, GitLab, Gerrit, Git, Helm, FluxCD

Sep 2019 - Jan 2022

2 years 5 months

Head of Development / Head of Architecture

Betterspace GmbH

Managing a team (8 developers)
Responsible for software architecture and cloud environment (DevOps)
Doubled team size through presentations, marketing activities and involving external partners
Product Owner for Property Management System Gateway: designed an abstraction for PMS integration and supported the implementation
Built a Kubernetes platform for operating and delivering log and metrics analysis
Tools: Java 11, NodeJS, PostgreSQL, Spring Integration, Azure Service Bus, AKS, Terraform, OpsGenie, Jira, Confluence, Git, Azure DevOps, Helm, FluxCD, Grafana, Grafana Loki, Prometheus, Kanban, Scrum

Feb 2019 - Aug 2019

7 months

Switzerland

Senior Software-Architect / Site Reliability Engineer

Crisp Research AG

Advising clients on strategic and tactical approaches for introducing cloud technologies (Cloud, Kubernetes, PaaS)
Publishing strategic articles on the website
Operating and further developing multiple Kubernetes clusters on behalf of clients (SRE/DevOps)
Tools: Azure Kubernetes Service, Terraform, OpsGenie, Jira, Confluence, Git, Bitbucket, Kanban, Load Balancing, Helm, FluxCD

Nov 2018 - Feb 2019

4 months

Software Developer

Amoria Bond GmbH

Developing components of the transport management system
Bug fixing
Tools: Java 10, Spring Boot, Oracle 12, Apache Kafka, Polymer, Bitbucket, Scrum

Aug 2018 - Oct 2018

3 months

Requirements Engineer

GBV Göttingen

Analyzing workshops to gather requirements
Designing screens and prototypes with Figma
Creating a functional specification based on the outcomes
Tools: StarUML, Figma, Confluence, Microsoft Office

Mar 2018 - Oct 2018

8 months

Requirements Engineer / Software Architect / Consultant

Your Mellon GmbH

Running user story mapping workshops
Processing and documenting workshop results in an implementation plan
Supporting the creation of a requirements specification
Tools: Figma, Microsoft Office

Jun 2017 - Feb 2018

9 months

Ops / Team Lead / Product Owner / Software Architect

fino create GmbH

Evaluating and deploying Kubernetes clusters on Open Telekom Cloud
Leading a team (3 members) to develop a migration service
Gathering requirements and creating the software architecture
Tools: Kubernetes, Ansible, Confluence, Java 8, Spring Boot, RabbitMQ, Spring Data, MongoDB, IntelliJ, StarUML, Maven

Jan 2017 - Oct 2017

10 months

Team Lead for Account Switching / Software Developer / Software Architect / Project Manager

fino create GmbH

Leading a team (10 members) and managing external developers
Conducting technical interviews and coordinating training
Developing a configuration server and an address database with OAuth2 authentication (Spring Security OAuth 2)
Tools: Java 8, Dropwizard, Spring Boot, RabbitMQ, Docker, JUnit, MongoDB, IntelliJ, StarUML, Elasticsearch, AWS, API, Gradle, Maven, GitLab, Jenkins, Kanban

Apr 2016 - Dec 2016

9 months

Software Architect

ekom21 KGRZ Hessen

Leading the development team (6 developers) and managing external developers
Designing the software architecture for a nationwide administrative offenses system based on microservices and domain-driven design
Implementing an event-driven architecture with event sourcing
Setting up a Kubernetes cluster with Ansible
Tools: Java 8, IntelliJ, Spring Boot, RabbitMQ, Domain-Driven Design, Event Sourcing, Docker, JUnit, MongoDB, PostgreSQL, Kubernetes, Flyway, QueryDSL, REST, XML, Maven, Gerrit, Jenkins, Scrum

Sep 2015 - Jan 2016

5 months

Lead Software Developer / Software Architect

Deutsche Bahn Station & Service

Leading the development team (4 developers) for the back-office application in the "Travel Information of the Future" project
Supporting the architecture team with tool and framework selection
Developing a microservices architecture with Spring Integration and RabbitMQ
Tools: Java 8, Spring Boot, HTML5, PostgreSQL, Spring Integration, RabbitMQ, Kubernetes, Elasticsearch, AWS, API, Eclipse, IntelliJ, Gradle, Scrum

Jan 2015 - Sep 2015

9 months

Lead Software Developer / Software Architect

GLS IT-Services GmbH

Leading the development team (4 developers) for the logistics portal for private customers
Designing the software architecture in coordination with stakeholders
Preparing reports for project management
Tools: Java 7, Spring Web MVC, Spring Data, PostgreSQL, Spring Integration, JBoss EAP, Confluence, Flyway, JPA, Hibernate, IntelliJ, Gradle, Git, Subversion, Jenkins, Gerrit, Scrum

Jan 2014 - Nov 2014

11 months

Software Developer

Telekom Deutschland GmbH

Implementing modules for provisioning user rights according to the specifications
Writing unit tests with JUnit
Integrating third-party systems
Tools: Java 7, Spring Integration, Spring Data, ActiveMQ, IBM WebSphereMQ, JPA, Hibernate, Maven, Eclipse, Subversion, Scrum

Oct 2013 - Dec 2013

3 months

Software Developer

Arvato Mobile Solutions

Development of modules according to the requirements specification
Writing unit tests with JUnit
Tools: Java 6, Oracle 10, Swing, JUnit, Eclipse, Ant

Mar 2013 - Sep 2013

7 months

Software Developer

Volkswagen AG

Analysis of a legacy system and modeling with UML
Design and implementation of the administration interface for mobile data capture
Documentation
Tools: Java 6, Spring Web MVC, Spring Data, Oracle, JUnit, Eclipse, Maven

Jan 2012 - Sep 2012

9 months

Project Manager

Volkswagen AG

Coordination with stakeholders to set up a Confluence-based documentation platform
Defining a suitable wiki structure and training users
Tools: Confluence, Microsoft Office

Mar 2011 - Dec 2011

10 months

Software Developer

Volkswagen AG

Maintenance and further development of a management solution for technical offices
Creation of a requirements document to describe the functions
Tools: PHP, MySQL, Apache HTTP, Eclipse

Oct 2009 - Dec 2009

3 months

Software Developer

Volkswagen AG

Maintenance and further development of a management solution for technical offices
Creation of a requirements document to describe the functions
Tools: PHP, MySQL, Apache HTTP, Eclipse

Skills

Areas Of Work

Development Of Web-based Applications With Spring
Quality Assurance
Project Management
Software Architecture And Software Architecture Consulting
Requirements Engineering
Strategic And Tactical Technology Consulting
Setup And Operation Of Online Platforms

Industries

Logistics
Automotive
Telecommunications
Public Administration
Finance
Hospitality

Roles

Software Developer
Software Architect
Lead Software Developer
Project Manager
Requirements Engineer
Team Lead
Department Head

General Experience

It Experience Since 2009

Skills

Programming Languages: Java 8 / Java 11 / Java 17, Javascript / Ecmascript, Html5, Typescript, Css3, Sql
Databases: Postgresql, Mongodb, Mysql, Redis
Frameworks: Spring Boot, Spring Security, Spring Data, Spring Integration, Vue.js, Nuxtjs, Tailwind Css, Reactjs
Testing: Junit, Spock Framework, Selenium, Vitest, Jest
Standards / Protocols: Jpa, Jax-ws, Jax-rs, Jdbc, Jms, Http, Soap, Rest
Tools: Rabbitmq, Activemq, Enterprise Architect, Staruml, Figma, Docker, Ansible, Confluence, Microsoft Office, Intellij
Build Tools: Maven, Gradle, Vite, Webpack
Version Control: Git, Gitlab, Azure Devops, Subversion (Svn), Gerrit, Bitbucket
Ci Systems: Jenkins, Gitlab Ci, Azure Pipelines
Application Servers / Servers: Tomcat, Undertow, Nginx
Operating Systems: Ubuntu, Mac Os X
Cloud Providers / Cloud Tools: Microsoft Azure, Amazon Aws, Google Cloud, Kubernetes, Helm, Prometheus, Grafana, Grafana Loki, Terraform
Concepts: Enterprise Application Integration, Enterprise Integration Patterns, O/r Mapping, Object-oriented Programming, Uml, Rest, Soap, Continuous Integration, Continuous Delivery, Continuous Deployment, Lean Architecture, Clean Architecture (Hexagonal), Domain-driven Design, Microservices, Service-oriented Architecture (Soa), Design Patterns, Cqrs, Event Sourcing, Event-driven Architecture (Eda), Oauth 2
Methods: Lean Startup, Scrum, Kanban, Extreme Programming, User Story Mapping, Event Storming
Issue Trackers: Jira, Gitlab Issues