Custom Software Development
Purpose-built business applications using C#, .NET and ASP.NET Core, designed around real operational needs.
M-SYSTEMS delivers custom software development, data management and integration solutions using Microsoft .NET and SQL Server—combined with consulting, technical specifications and full project delivery.
From the first conversation and technical specification to deployment and ongoing improvement, we bring software engineering and business understanding together.
Purpose-built business applications using C#, .NET and ASP.NET Core, designed around real operational needs.
Database architecture, T-SQL, performance optimization, reliability, reporting and long-term maintenance.
Data modeling, quality, cleansing, ETL workflows and turning fragmented information into trusted data.
Structured, validated migrations between databases, legacy systems and modern applications with business continuity in mind.
Secure APIs and integrations connecting applications, data sources and business processes.
Integrating Microsoft .NET applications with GIS technologies, Bing Maps, map services and tile services. Interactive Leaflet maps with geographic features, polygons, layered data and heatmaps.
Business analysis, solution architecture, requirements discovery and clear technical documentation.
Planning, implementation, coordination, testing, deployment and ongoing technical support.
We focus on robust, maintainable business systems built with proven Microsoft technologies. Whether you need a new application, a database modernization project or a reliable data pipeline, we design for performance, clarity and long-term value.


Founded in 2009 in Sofia, Bulgaria, M-SYSTEMS works with customers in Bulgaria, Austria, Germany and Switzerland, delivering software solutions tailored to their operations.
Our project experience spans real estate, transportation, manufacturing and e-commerce, from business applications and system integrations to data-intensive platforms and migrations.
We also bring specialized expertise in GIS and geospatial integrations, connecting Microsoft-based business systems with Bing Maps, map services and tile services. Using Leaflet, we build interactive map experiences that visualize geographic features, polygons, data layers and heatmaps—making location-based information easier to explore and use in business workflows.
Software is most valuable when it solves a genuine business problem. We work across the full delivery lifecycle: understanding requirements, evaluating existing systems, documenting solutions, building applications, transforming data and connecting platforms.
Our approach combines practical consulting, clear technical specifications, disciplined project management and hands-on development—so the solution fits the business, not the other way around.
A structured approach with clear communication, practical architecture and measurable outcomes.
Understand objectives, workflows, stakeholders and existing systems.
Define requirements, data models, integration points and delivery plan.
Implement applications, databases, migrations and APIs with testing.
Release, validate, document and support continuous improvement.
Tell us about your project, existing system or business requirement. We can help shape the solution—from initial consultation through implementation.
✉ office@m-systems.bg