Developed a financial management platform for Germany's Federal Ministry for Economic Cooperation and Development (BMZ) to track international development aid funding across multiple countries and fiscal years

Integrated budget management for church-based initiatives in Germany

Built dynamic reporting tools with user-defined filtering (country, timeframe, project type)

Streamlined document import/export modules to automate data ingestion from external organizations (NGOs, partner governments)

Developed a platform allowing citizens to rent out private parking spaces during available time slots

Implemented interactive map-based location selection (Leaflet) and address search

Built reservation system with time slot and price management

Displayed available parking spaces within a specified radius of a given address

Digitized the Order's complex hierarchical organizational structure for charity operations across Germany

Implemented event and volunteer coordination modules with automated assignment based on verified competencies

Built a documentation system for competency certification and regulatory compliance

Centralized volunteer qualification tracking for charitable activities

Built a platform for interactive online private lessons between qualified teachers and students

Implemented calendar-based availability management for teachers

Created student-facing teacher profiles with subject and education level filtering

Enabled direct booking of 30-minute introductory sessions; subsequent sessions managed by teachers

Built web application with Windows authentication to synchronize users between Active Directory and Webex Sandboxes

Implemented mapping tables for AD-to-Webex relationships with automated access and refresh token management

Assigned different Webex licenses and admin roles based on AD group membership

Realized synchronization process using BackgroundService; user interactions via  Core 7.0 Web API and Angular

Developed an MVC application for Hamburg's eGovernment infrastructure to manage public space usage applications

Built interconnected wizard pages for construction activities, events, advertising campaigns, and gastronomic ventures

Integrated multiple external REST and SOAP services

Enabled Hamburg residents to secure public space usage online

Developed expense reimbursement product as SharePoint Provider-hosted Add-In

Architected  MVC products as Provider-hosted Add-Ins for SharePoint

Developed financial software to integrate with Microsoft Dynamics NAV and Dynamics GP

Customized features according to client requirements

Built products using WebForms (pre-2016) and  MVC 5

Worked with SharePoint Server model and CSOM (client-side object model)

Built a waste collection management system for the Municipality of Burgas

Implemented automatic weight reading from electronic scale using non-blocking JavaScript Worker

Assigned credit points to citizens based on returned waste amounts

Distributed gifts at year-end based on accumulated credits