DevExpress Expert in Germany

• Development of a modular application framework as the future foundation and for consolidating more than 500 in-house applications.
• Role: Software Architect.
• Process: Scrum, 9-person team, clean code principles.
• Technologies: Visual Studio 2022, Git, C# 12, .NET 8.0, WPF, MVVM, xUnit, WIX-Toolset 4, Visual Studio Templating, Enterprise Architect, REST services, SignalR, SAP, Oracle DB, OAuth 2.0, OpenId.

• Migrating the existing Delphi 2010 version to Delphi 10.4.
• All software products must be made Terminal Server capable.
• Support and further development of the in-house forwarding software until it is replaced by a newly purchased version.
• Technologies: Delphi 2010, Delphi 10.4, Advantage Database, DevExpress, GIT, Devart, OOP.

• Industry: Digital music solutions
• Technologies used: Flutter, Dart, iOS, Android, GitLab, PlantUML

• DTO class generator: In-house development of a tool for the automatic generation of classes, functions, and methods for use in .NET Core projects based on SAP Business One Service Layer metadata
• E-invoice import add-on: Development of a SAP Business One add-on / coresuite module for the automated import of ZUGFeRD e-invoices as incoming invoices – with configurable mapping to flexibly control the import logic across four mapping types (DIRECT, SQL, FIXED, EXPR). The add-on is available as a licensed product for SAP Business One customers.

Stack: SAP Business One, SAP Business One Service Layer, coresuite Country Package, C#

• Many years of work in different roles within the MES product area, with technical development, agile leadership, and strategic product responsibility for key MES components.
• As C# Fullstack Developer / Scrum Master (2018–2020): further development of a programming system for laser machines, introduction and moderation of Scrum processes, quality assurance through automated tests and documentation.
• As Product Owner Cloud Services (2019–2020): leadership of two AWS-based cloud services for providing laser data and legal documents, definition of the product vision, backlog maintenance, and stakeholder communication.
• As Product Owner Infrastructure & Core Services / Head of DevOps / Product Security (2020–2025): responsibility for core MES components such as Service Orchestrator, Licensing Service, IAM, and AppLauncher, building and maintaining Azure DevOps pipelines for over 70 components, and introducing security standards (CRA).
• Company-wide contact for Azure DevOps and largely responsible for its introduction.
• Standardized versioning of all components.
• Structuring of CI/CD and release pipelines.
• Building an agent scale set with special software configuration.
• Connecting Azure DevOps with ServiceNow.
• Standardizing the integration of security tools such as SonarCloud, Dependency Track, and digital signing.
• Technologies & tools: .NET (C#, 4.8 / Core 3.x / 8), WPF, WCF, REST, OData, JSON, DevExpress, Duende IDP, Azure DevOps, AWS, PowerBI, SonarCloud, Dependency Track, Visual Studio Pro.
• Method: Scrum.
• Project language: German / English.

• Design and implementation of a system for controlling the complete process of installing, removing, and replacing electricity meters by external service providers for an energy supplier

• Automated retrieval of orders and available devices through defined interfaces (e.g. from SAP)

• Orchestration of the process steps (assignment of meters, processing of meter data, transfer of updated information back to the source system) through a Spring-Boot backend

• Provision of a React-based web client for operational tracking and control of orders, e.g. to continue failed process steps or resend notifications

• Strategic project development, realisation, and implementation with internal and/or external development team
• Multi stakeholder management
• Planning new projects, cost calculation, risk calculation
• AI project for the electrical components production
• Building management systems integrations (BACnet, Modbus, etc)
• Inhouse BACring system architecture and development (control system for fire protection and smoke extraction systems)
• Inhouse MES system architecture and development
• Project management
• Agile-SCRUM project development
• Solution architecture and processes analytics (UML)
• Business application development
• Jira project management
• Reporting and documentation
• Recruitment process for the IT staff
• Software architecture, project development, costs, risks
• Education IT staff (internal and external)
• Responsibility for 5 development/DevOps/QA teams

• Backend development: .Net 8, C#, PostgreSQL, Entity Framework Core, REST Web APIs, Docker, Kubernetes, Kafka, Open API Swagger, Apache Airflow, Resharper, Git, Microservices, SOAP, gRPC, Hangfire, OAuth 2, GraphQL
• Interface development for document processing with SmartFix, Softexpansion and Natif.ai: C#, REST API, Resharper, Git
• Deployment: Azure DevOps YAML, Vanilla Helmchart, Rancher, Kubernetes Cluster, Linux Docker, Windows VM, Python
• Unit tests and integration tests
• Telemetry, Kibana, Grafana, Elastic Search
• Work in a Kanban team of 8 developers, 1 tester and one Product Owner

• Design and implementation of a Laravel backend API for provider-based geo search, feature details, boundary geometries and neighborhood detection.
• The API serves as a server-side proxy, cache and enrichment layer, protecting credentials for external geo services and persisting features, localizations, geometries, hierarchies and neighborhood relationships in MariaDB.
• Key areas included normalization of autocomplete and feature data, caching strategies for expensive boundary/polygon requests, spatial processing of GeoJSON and MultiPolygon geometries, as well as neighborhood detection using hierarchies, bounding box filters and topology checks.
• Additionally, separate production and diagnostic endpoints were created, along with status and error catalogs, discovery logging, a Docker development stack, API documentation, and unit and feature tests.
• Technologies: PHP 8.3, Laravel, REST API, geo data API, GeoJSON, MariaDB Spatial, Eloquent, Laravel Queues, PHPUnit, Mockery, Docker, Docker Compose, API design, geocoding, boundary data, spatial queries.

• Implemented modernization measures to optimize processes in the insurance domain
• Replaced old interfaces with newer APIs
• Merged several smaller solutions into one main solution to improve builds and increase efficiency in the development process
• Replaced the persistence solution in the backend from Telerik to NHibernate
• Created unit tests to secure the code

• Developed high-performance REST API interfaces in C# for Investitionsbank Berlin (IBB) using CI/CD (Git, Azure DevOps).
• Developed the "Pean Admin Center" using the Microsoft Graph API (backend: C#, frontend: Vuetify), implemented via CI/CD pipelines (Azure DevOps).
• Created low-code business applications and automated processes with Power Apps and Power Automate.
• Set up and designed the online shop for Pestalozzi-Fröbel-Haus (PFH) via Wix.

• Extension of test software for functional testing of IO modules in WPF with MVVM
• Configuration and extension of a specialized WPF control from Nevron
• Connection to Siemens PLCs via Siemens OPC UA Client and Allen-Bradley/Rockwell PLCs via Codebix OPC UA Client
• Integration of various data sources via REST API and JSON
• Development of stored procedures, views, and triggers for PostgreSQL and SQL Server with ADO.NET and Entity Framework 6

• Devised a new Domain-Driven Design architecture for a core system: reverse-engineered a central component, refactored the data-access layer to minimise database round-trips (improving scalability) and migrated processing to async.
• Decomposed the platform into independent .NET Core microservices (database-per-service) with RabbitMQ pub/sub using the Outbox Pattern + Saga choreography, behind an Ocelot API Gateway (JWT, rate limiting, CORS, health checks).
• Delivered on .NET Core / Angular / SQL Server / EF Core with Docker and Azure DevOps CI/CD; implemented health checks and CORS; contributes technical designs for stories in agile Scrum.
• Sole ADR owner; mentored 3 engineers and presented architecture decisions directly to the Director of Corporate IT.