Technology
Proven technology, grouped by purpose.
We choose established, well-supported technology that your team can maintain for years — and we're transparent about what is running in our delivered product.
In production = used in the FENDA TECH Accounting System today.
Technology stack
Backend
Business logic, APIs and background processing.
- .NET
- ASP.NET Core
- ASP.NET Core Identity
- FastAPI
- Python
Frontend
Fast, accessible, responsive interfaces.
- HTML
- CSS
- JavaScript
- Bootstrap
- Chart.js
Database
Design, migration, optimization, backup and reporting.
- SQL Server
- Entity Framework Core
- PostgreSQL
- MySQL
- SQLite
Integration
Connecting systems, partners and files.
- REST API
- Webhooks
- JSON
- XML
- File interfaces (Excel / CSV)
- SAP integration
AI
Document understanding and automation.
- OCR
- Computer vision
- LLM integration
- Document processing
Mobile
Field apps and device connectivity.
- iOS
- Android
- Mobile APIs
- Device integration
Infrastructure
On-premise, hosted or cloud deployment.
- IIS
- Windows Server
- Linux
- systemd
- Reverse proxy
- Cloud services where applicable
Documents & reporting
Output formats businesses actually use.
- PDF (MigraDoc)
- Excel (ClosedXML)
- CSV (CsvHelper)
- Print templates
Observability
Knowing what the system is doing.
- Serilog structured logging
- Audit trail
- Health checks
- API monitoring
Security
Security built into the application.
Implemented in the FENDA TECH Accounting System today:
- Authentication with ASP.NET Core Identity
- Authorization with users, roles and permissions
- Audit trail of document activity
- Configurable session duration
- HTTPS enforcement option for deployment
- Server-side validation and parameterized data access (EF Core)
We don't claim certifications we don't hold. Security requirements for each project are agreed and documented with you.
Reliability
Designed to be operated, not just launched.
- Structured application logging (Serilog)
- Database transactions for posting
- SQL Server backup with checksum from the admin screen
- Documented restore procedure
- Error handling with friendly error pages
For integration projects we also design retry handling, health checks and API monitoring as part of the solution.
Deployment options
Runs where you need it.
On-premise
Windows Server with IIS and SQL Server inside your network — common for government and utilities.
Hosted / cloud
Hosted Windows or Linux servers with reverse proxy and managed backups.
Hybrid
Core data on-premise, with APIs for mobile apps, portals and partners.
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