Method Atlas
Public methods platform for decision-making with a structured knowledge base and clear navigation.
My role: Product Owner, Software Architect and Software Developer
PROJECTS
What I have built.
My own applications to try, internal tools, and projects from my professional work—with my role, tasks, and outcomes for each.
TRY IT YOURSELF
Public applications
My own products that are available online. Open them, try them, and read the details to see what I was responsible for.
App screenshot App screenshot Nexonoma - Knowledge Graph Platform
Nexonoma is a web app for exploring architectural knowledge and connected content. A knowledge graph makes concepts, methods, tools and technologies accessible; graph modelling and AI-assisted content pipelines support maintaining the knowledge catalogue.
My role: Product Owner, Software Architect and Software Developer
App screenshot GraphRAG Compass
Public field guide to GraphRAG and knowledge graphs with structured guidance on methods and potential applications.
My role: Product Owner, Software Architect and Software Developer
App screenshot Systems Thinking for Software and Enterprise Architects
Public learning platform teaching systems thinking in software and enterprise architecture.
My role: Product Owner, Software Architect and Software Developer
Screenshot of the project page Sketchblock
Sketchblock connects collaboratively editable Excalidraw boards with a clear workflow and GitHub versioning. Teams sketch together live; boards are stored in the repository. Access is protected by a local login.
My role: Product Owner, Software Architect and Software Developer
Agenten-Kompass
German- and English-language information portal for exploring AI agents. Curated profiles, comparison and sources support the selection of suitable tools.
My role: Product Owner, Software Architect and Software Developer
FOR MY OWN USE
Internal applications
Tools I develop for my own work. They are not publicly available; the screens show fictional sample data.
Original screenshot · personal data anonymised MSYS Business OS
Personal business system for contacts, projects, skills and operational work. A Next.js interface, NestJS API, PostgreSQL and Neo4j connect structured data with traceable workflows.
My role: Product Owner, Software Architect and Software Developer
Original screenshot · personal data anonymised MSYS Organization OS
Organization OS makes collaboration with AI staff visible as an organisational model. An organisation chart, profiles, personnel records and assignments come together in a local application.
My role: Product Owner, Software Architect and Software Developer
More personal projects
- from 09/2026MSYS Solution WorkbenchSolution Workbench supports structured work on needs and solution cases. It connects case files, people and organizations involved, chronological histories, artifacts, work and time in a local application.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- from 09/2026System Design AtlasThe System Design Atlas helps people discover digital systems by their business purpose and understand design decisions. Topic areas, reference cases and successive design steps build on each other.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- 2026 (start and end dates open)Software Architecture AtlasKnowledge map and exploratory learning/navigation system for technical software architecture.Product Owner, Software Architect and Software DeveloperHTML
FROM MY EMPLOYMENT
Professional projects
Architecture and development work from my previous roles—from individual microservices to company-wide architecture standards.
Architecture Standardisation - ADR & TDD Framework
Enterprise Architect
A shared framework for Architecture Decision Records and technical design documents made architectural decisions consistently traceable across teams. It included templates, training and a lightweight governance process.
- Post
- Gemeinsame Vorlagen für die Dokumentation und Abstimmung of Architekturentscheidungen entwickeln · Conduct training on using the ADR and TDD framework · Embed the framework in shared architecture and governance processes
- Result
- Created consistent templates and processes for architecture decisions across Europe
Domain Mapping and Operating Model
Enterprise Architect
The project analysed the overall architecture and organised responsibility areas through domain mapping and a capability map. The results supported clarification of bounded contexts and organisational responsibilities.
- Post
- Analyse the overall architecture in terms of business domains and areas of responsibility · Structure domains and their boundaries through Domain Mapping · Eine Capability Map als Grundlage für die Klärung of Bounded Contexts und organisatorischen Zuständigkeiten erstellen
- Result
- Created a Capability Map and documented business domain boundaries clearly · Grundlagen für die Klärung of Bounded Contexts und Verantwortungsbereichen geschaffen
AWS Serverless Migration
Software Architect
The migration moved existing functionality to a serverless AWS architecture to simplify deployments and support demand-based operations.
- Post
- Design a serverless AWS target architecture for existing functionality · Migrate existing functionality to the serverless architecture · Optimise deployment processes as part of the migration
- Result
- Implemented the serverless target architecture and migrated existing functionality to it
Commercial Property Search – Elasticsearch Ingestion Pipeline
Software Developer & Architect
For a property portal’s commercial property search, I developed the ingestion pipeline that makes listings available for search and worked on search performance and the backend.
- Post
- Die Elasticsearch-Ingest-Strecke zur Bereitstellung of Gewerbeimmobilienangeboten für die Suche gestalten · Develop backend processing of search data with Java · Work on search performance for commercial property listings
- Result
- Implemented an ingest pipeline that makes property listings available for commercial property search
Immowelt GmbH2016–2025
- 2023-2025Architecture Wiki & Knowledge PlatformKnowledge platform for architectural decisions, technical guidelines and reusable documentation. It supports shared architectural communication and access to distributed knowledge.Enterprise ArchitectConfluence
- 2023-2025Legacy Analysis of a Property PlatformAnalysis of a property platform preserved existing technical knowledge and prepared it for architectural decisions. This created traceable foundations for further development.Enterprise ArchitectJava EE (JEE) · Oracle Database
- 2019-2020Property Valuation - ML IntegrationConnected an ML-assisted valuation function to existing products through serverless interfaces.Software ArchitectPython · AWS Lambda
- 2018-2022Admin and Service BackendThe Quasar-based admin and service backend provided internal interfaces for operational workflows. REST integrations connected the user interface with the associated services.Software ArchitectQuasar · Vue
- 2018-2022Seller Contact Microservice – Hexagonal ArchitectureA microservice provided a stable core for processing seller contacts. A hexagonal architecture separated business logic and technical connections for further extension.Software ArchitectJava · Spring Boot
- 2017-2018Permission ServiceThe permission service brought permission and access contexts together in a central service. Applications could obtain permission information consistently.Software Developer & ArchitectSpring Boot
- 2016-2017User Statistics MicroserviceThe microservice collected and prepared usage statistics for connected systems. It created an independent backend component for analytics data.Software developerJava · Cassandra
Nubon GmbH2014–2016
- 2015-2016Microservice RefactoringThe refactoring divided an existing application into independently deployable services to enable shorter deployment cycles and independent changes.Software architectSpring · Java
- 2014-2016Mobile Payment BackendArchitecture and backend development of a mobile payment system for payments between an app and a bank.Java software architectSpring · MQ
- –System and Architecture AnalysisQualitative examination of a software system with a written analysis report. The work combined architectural assessment, traceable documentation and support in fault cases.System and Architecture AnalysisJava · Spring Boot
Elitemedianet GmbH
- –Billing, Payment and DunningBuilt and developed a billing, payment and dunning system for recurring business transactions on an online platform.Software architectJava · Spring Framework · Hibernate
- –Data Handovers for Accounting and ControllingThe project provided database-based business transaction data for operations, accounting and controlling. Handover lists supported postings and reconciliation with bank data.Developer / Liaison with business departmentsJava · Scala · Groovy
- –PayPal Integration into an Existing Payment SystemIntegrated PayPal as an additional payment method into an online platform’s existing payment system.Developer in paymentsPayPal · Java · Apache Tomcat
- –Supporting a Scrum IntroductionSupported the introduction of Scrum and shared agile working practices within the organisation.Supporting the introduction of Scrum
LOOK UPBrowse all projectsOpen project list (29)
29 Projects
- from 05/2026Method AtlasPublic methods platform for decision-making with a structured knowledge base and clear navigation.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- from 10/2025; separate app from 11/2025Nexonoma - Knowledge Graph PlatformNexonoma is a web app for exploring architectural knowledge and connected content. A knowledge graph makes concepts, methods, tools and technologies accessible; graph modelling and AI-assisted content pipelines support maintaining the knowledge catalogue.Product Owner, Software Architect and Software DeveloperNext.js · NestJS · TypeScript
- from 05/2026GraphRAG CompassPublic field guide to GraphRAG and knowledge graphs with structured guidance on methods and potential applications.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- from 03/2026Systems Thinking for Software and Enterprise ArchitectsPublic learning platform teaching systems thinking in software and enterprise architecture.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- from 07/2026SketchblockSketchblock connects collaboratively editable Excalidraw boards with a clear workflow and GitHub versioning. Teams sketch together live; boards are stored in the repository. Access is protected by a local login.Product Owner, Software Architect and Software DeveloperNext.js · TypeScript · NestJS
- from 09/2026Agenten-KompassGerman- and English-language information portal for exploring AI agents. Curated profiles, comparison and sources support the selection of suitable tools.Product Owner, Software Architect and Software DeveloperJavaScript / ES6 · Node.js · HTML
- from 08/2026MSYS Business OSPersonal business system for contacts, projects, skills and operational work. A Next.js interface, NestJS API, PostgreSQL and Neo4j connect structured data with traceable workflows.Product Owner, Software Architect and Software DeveloperTypeScript · Next.js · React
- from 09/2026MSYS Organization OSOrganization OS makes collaboration with AI staff visible as an organisational model. An organisation chart, profiles, personnel records and assignments come together in a local application.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- from 09/2026MSYS Solution WorkbenchSolution Workbench supports structured work on needs and solution cases. It connects case files, people and organizations involved, chronological histories, artifacts, work and time in a local application.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
- from 09/2026System Design AtlasThe System Design Atlas helps people discover digital systems by their business purpose and understand design decisions. Topic areas, reference cases and successive design steps build on each other.Product Owner, Software Architect and Software DeveloperNext.js · React · TypeScript
Something similar in mind?
I’d be glad to talk about your idea or technical question.