Waldemar Biller - Solution Architect / IT Architect / Software Architect

Q: Where is Waldemar based?

Waldemar is based in Vellmar, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Waldemar speak?

Waldemar speaks the following languages: German (Native), English (Advanced), Russian (Elementary) .

Q: How many years of experience does Waldemar have?

Waldemar has at least 14 years of experience. During this time, Waldemar has worked in at least 15 different roles and for 15 different companies . The average length of individual experience is 1 year and 8 months . Note that Waldemar may not have shared all experience and actually has more experience.

Q: What is Waldemar's latest experience?

Waldemar's most recent position is Software Architect for Product Data Management Tool at Ferchau Contract GmbH .

Q: What companies has Waldemar worked for in recent years?

In recent years, Waldemar has worked for Ferchau Contract GmbH , top it-services AG , corporate connect GmbH , ekom21 KGRZ Hessen , and Betterspace GmbH .

Q: Which industries is Waldemar most experienced in?

Waldemar is most experienced in industries like Information Technology , Government and Administration , and Real Estate . Waldemar also has some experience in Automotive , Transportation , and Telecommunication .

Q: Which business areas is Waldemar most experienced in?

Waldemar is most experienced in business areas like Information Technology , Product Development , and Operations . Waldemar also has some experience in Project Management , Quality Assurance , and Strategy .

Q: Which industries has Waldemar worked in recently?

Waldemar has recently worked in industries like Information Technology , Government and Administration , and Real Estate .

Q: Which business areas has Waldemar worked in recently?

Waldemar has recently worked in business areas like Information Technology , Product Development , and Operations .

Recommended expert

Vellmar, Germany

Check rate

Experience

Jul 2024 - Present

1 year 10 months

Karlsruhe, Germany

Remote

Software Architect for Product Data Management Tool

Ferchau Contract GmbH

Defining the software architecture
Designing and developing modules
Assisting internal staff with learning and onboarding
Tools: SAP CAP / CDS, Java 21, SAP HANA, SAP Business Technology Platform (BTP)

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
Developing the solution design
Tools: Kubernetes, Microsoft Word, StarUML

Oct 2022 - Mar 2023

6 months

Team Leader Java Development / DevOps

corporate connect GmbH

Coordinating development activities and facilitating planning meetings
Modernizing the application for procurement processes
Analyzing, optimizing, and consolidating existing CI pipelines
Assisting with release creation and rollout
Tools: Java 17, Spring Boot, ReactJS, Docker, Hibernate, JPA, GitHub, Travis CI

Jan 2022 - Present

4 years 4 months

IT-Consultant / DevOps Architect

ekom21 KGRZ Hessen

Consulting and supporting software development
Setting up the development environment
Building 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

Creating and coordinating releases
Coordinating testing activities and troubleshooting
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

Team leadership (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 integration with PMS and supported the implementation
Built a Kubernetes platform for operating and providing 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

Advised clients on strategic and tactical approaches for introducing cloud technologies (Cloud, Kubernetes, PaaS)
Published strategic posts on the website
Operated and further developed multiple Kubernetes clusters for 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

Developed 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

Analyzed workshops for requirements gathering
Designed mockups and prototypes with Figma
Created a technical concept based on the results
Tools: StarUML, Figma, Confluence, Microsoft Office

Mar 2018 - Oct 2018

8 months

Requirements Engineer / Software Architect / Consultant

Your Mellon GmbH

Conducted user story mapping workshops
Processed and documented the workshop results in an implementation plan
Assisted in creating a requirements specification
Tools: Figma, Microsoft Office

Jun 2017 - Feb 2018

9 months

Ops / Team Lead / Product Owner / Software Architect

fino create GmbH

Evaluation and deployment of Kubernetes clusters on Open Telekom Cloud
Led a team (3 members) for developing a relocation service
Gathered requirements and designed 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 Account Switching / Software Developer / Software Architect / Project Manager

fino create GmbH

Led a team (10 members) and managed external developers
Conducted technical interviews and coordinated training
Developed 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

Led the development team (6 developers) and managed external developers
Designed the software architecture for a nationwide administrative offense system using microservices and domain-driven design
Implemented an event-driven architecture with event sourcing
Built 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

Led the development team (4 developers) for a backoffice application in the "Travel Information of the Future" project
Supported the architecture team in tool and framework selection
Developed 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

Led the development team (4 developers) for a logistics portal for private customers
Designed the software architecture in coordination with stakeholders
Prepared 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

Implementation of 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

Developing modules based on specifications
Writing unit tests with JUnit
Tools: Java 6, Oracle 10, Swing, JUnit, Eclipse, Ant

Mar 2013 - Sep 2013

7 months

Software Developer

Volkswagen AG

Analyzing an old system and modeling with UML
Designing and implementing the admin 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

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

Mar 2011 - Dec 2011

10 months

Software Developer

Volkswagen AG

Maintaining and enhancing a management solution for technical offices
Creating a requirements specification 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 specification to describe the functions
Tools: PHP, MySQL, Apache HTTP, Eclipse

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Government and Administration, Real Estate, Automotive, Transportation, and Banking and Finance.

Information Technology

Government and Administration

Real Estate

Automotive

Transportation

Banking and Finance

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Operations, Project Management, Quality Assurance, and Strategy.

Information Technology

Product Development

Operations

Project Management

Quality Assurance

Strategy

Summary

I have built solutions and infrastructures across a wide range of technologies while leading teams and driving improvements in cloud, DevOps, and software architecture. I take pride in modernizing applications, creating robust CI/CD pipelines, and establishing scalable Kubernetes clusters that support development and operations.

My experience covers everything from designing microservices and event-driven architectures to hands-on development in Java and emerging frameworks. I enjoy solving complex challenges and consistently delivering reliable, efficient systems that meet evolving business needs.

Skills

Areas Of Work

Web Application Development With Spring
Quality Assurance
Project Management
Software Architecture And Architecture Consulting
Requirements Engineering
Strategic And Tactical Technology Consulting
Building And Operating Online Platforms

Industries

Logistics
Automotive
Telecommunications
Public Sector
Finance
Hospitality

Roles

Software Developer
Software Architect
Senior Software Developer
Project Manager
Requirements Engineer
Team Leader
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, Xtreme Programming, User-story Mapping, Event-storming
Issue Trackers: Jira, Gitlab Issues

Languages

German

Native

English

Advanced

Russian

Elementary

Statistics

Experience

Total positions 21

Experience in Information Technology 10 y

Avg length 10 m

Longest experience 4 y 3 m

Global Experience

Countries worked in 2 (Germany, Switzerland)

Primary country Germany

Expertise

Recent roles Software Architect for Product Data Management Tool, Solution Architect, Team Leader Java Development / DevOps

Main industries Information Technology, Government and Administration, Real Estate

Main business areas Information Technology, Product Development, Operations

Profile

Created

March 2024

Last Update

April 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Waldemar based?

Waldemar is based in Vellmar, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Waldemar speak?

Waldemar speaks the following languages: German (Native), English (Advanced), Russian (Elementary).

How many years of experience does Waldemar have?

Waldemar has at least 14 years of experience. During this time, Waldemar has worked in at least 15 different roles and for 15 different companies. The average length of individual experience is 1 year and 8 months. Note that Waldemar may not have shared all experience and actually has more experience.

What roles would Waldemar be best suited for?

Based on recent experience, Waldemar would be well-suited for roles such as: Software Architect for Product Data Management Tool, Solution Architect, Team Leader Java Development / DevOps.

What is Waldemar's latest experience?

Waldemar's most recent position is Software Architect for Product Data Management Tool at Ferchau Contract GmbH.

What companies has Waldemar worked for in recent years?

In recent years, Waldemar has worked for Ferchau Contract GmbH, top it-services AG, corporate connect GmbH, ekom21 KGRZ Hessen, and Betterspace GmbH.

Which industries is Waldemar most experienced in?

Waldemar is most experienced in industries like Information Technology, Government and Administration, and Real Estate. Waldemar also has some experience in Automotive, Transportation, and Telecommunication.

Which business areas is Waldemar most experienced in?

Waldemar is most experienced in business areas like Information Technology, Product Development, and Operations. Waldemar also has some experience in Project Management, Quality Assurance, and Strategy.

Which industries has Waldemar worked in recently?

Waldemar has recently worked in industries like Information Technology, Government and Administration, and Real Estate.

Which business areas has Waldemar worked in recently?

Waldemar has recently worked in business areas like Information Technology, Product Development, and Operations.

What is the availability of Waldemar?

Waldemar will be available full-time from July 2026.

What is the rate of Waldemar?

Waldemar's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.