A product in front of users in 14 business days.
Web, iOS and Android from one C#/.NET codebase, within an agreed functional scope, with the pipelines, tests and monitoring that let you keep shipping after day 14.
The MVP offer
// about
Jasmin Sabanovic
Hands-on .NET engineer and architect for business products. Microsoft Certified: Azure Solutions Architect Expert. I design the system and write the code myself, from the first architecture decision to the handover.
Sarajevo, Bosnia and Herzegovina (CET) Jasmin@dotnetleet.com LinkedIn GitHub
// what I do
Business software on .NET, two ways in.
Both start with a short call and a straight answer on whether I am the right person for it.
New systems, extensions, and legacy moved to modern .NET.
Business processes understood before they are coded, reusable and configurable components where the rules repeat, and the existing team taken along. Scope, phases and pricing per project.
Development & modernizationEither way you own the code from the first commit.
// background
Inside systems that already run a business.
Developer, architect and team lead on business software, mostly in systems that could not be switched off while they changed. The examples are anonymised; the roles are the ones I actually had.
Oracle PL/SQL logic carried into C#/.NET
Complex PL/SQL business logic and data workflows moved into C#/.NET services with functional parity and transactional integrity, including reusable patterns for turning stored procedures, cursors and views into testable C# code, on a platform processing millions of records.
A LIMS redesigned around the real laboratory workflow
Analysis on site at a laboratory in Germany with the people who run it, redesign and simplification of the laboratory processes, the target architecture on .NET, leading a team of six to eight engineers, and a structured handover so the team continues on its own.
A document generation engine for Dynamics 365
Configurable data sources and Word-based templates, metadata-driven processing and runtime type resolution, so one engine serves different Dynamics 365 applications and data structures.
Delphi ERP logic and processes as C#/.NET web functionality
Existing ERP workflows, database structures and Delphi business logic analysed first, then field operations, travel orders, route planning and retail functionality developed as web features on the same data.
Other domains along the way: high-performance distributed backend systems, manufacturing execution systems and their ERP, PLC and IoT integrations, a government tax platform, a gaming back office, and SAP Business One add-ons.
// how I work
Scope first, increments after, nothing locked in.
- Scope before promises. For the MVP the functional scope is fixed before day one. For custom work, scope, phases and pricing follow the discovery or the assessment.
- Verifiable increments. Work is planned in steps that can be tested and released on an agreed schedule, with tests that pin the behaviour that must not change.
- Documentation and handover. Code, pipelines and notes live in your repository, and your team is walked through them. Nothing depends on me staying.
- Direct contact. No sales reps and no account managers. You talk to the person who writes the code.
// credentials
Verifiable, not decorative.
- Microsoft Certified: Azure Solutions Architect Expert Verify on Microsoft Learn
- Microsoft Certified: Power Platform Solution Architect Expert Verify on Microsoft Learn
- Microsoft Certified: Azure Developer Associate Verify on Microsoft Learn
- Microsoft Certified: Azure Database Administrator Associate Verify on Microsoft Learn
- Microsoft Certified: Azure Administrator Associate Verify on Microsoft Learn
- Microsoft Certified: Power Platform Developer Associate Verify on Microsoft Learn
- Bachelor of Science in Information Technology, CEPS
// writing
I write about what I build.
Essays on architecture, modernization and AI inside business systems, with code you can run.
Oct 23, 2026
The Optimistic Concurrency EF Core Gives You for One Column
Part 2 of the locking series: the optimistic concurrency EF Core gives you for a rowversion column, measured under 50 concurrent transfers. How the token becomes a WHERE predicate, how to handle DbUpdateConcurrencyException without a stale change tracker, which retry policy does not stampede, and where a hot row breaks it.
Read the essay Oct 19, 2026Multi-Tenancy Is an Identity Problem
Silo, pooled compute with siloed data, or one partitioned database: the layout sets the isolation boundaries. The leak is always the same mistake, a request that reached the data layer without knowing its tenant. Put the tenant id in the token, resolve it once at the edge, let the data layer apply it to reads and writes, and hand it explicitly to workers and jobs.
Read the essay Oct 2, 2026Software Architecture Is All About Trade-Offs
There is no best architecture. Every decision gives you something and takes something away. The price starts on day one, the benefit only when the need shows up. Why moving code to another server does not fix coupling.
Read the essay// next step
A product to launch, or a system to move?
Send a few sentences about it. You get a straight answer on which offer fits, the risks I see, and what the first step would be.