Selman Altinay
Senior .NET developer – API & ERP integrations, n8n & AI
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ASP.NET Core
Dot Net Backend Developer
Move your .NET PDF generation off wkhtmltopdf / DinkToPdf
$1,650
ASP.NET Core
ERP
API Integration
Peppol connection for your own or legacy invoicing software (BE)
$1,050
Flutter
Mobile App Development
Accessibility
Flutter app accessibility audit (EAA, screen readers) and fixes
$810
Localization
App Store Optimization
App Store
Store page refresh: 12 languages, per-language screenshots
$1,300
Android
Mobile App Development
App Store Optimization
Publish your Lovable/Bolt/Base44 app to Google Play & App Store
$1,550
ASP.NET Core
Industrial Automation
Dot Net Backend Developer
PLC / SCADA machine data to database & live dashboard
$600
ERP
API Integration
Audit
PrestaShop to ERP / accounting order sync audit
$590
ASP.NET Core
C#
Microsoft SQL Server
Stripe or PayPal webhooks for your .NET app in 48 h
$480
Anthropic
Prompt Engineer
Dot Net Backend Developer
OpenAI / Claude API integration for .NET apps
$150
ASP.NET Core
Dot Net Backend Developer
Database Engineer
SQL Server query & stored procedure tuning
$90
ASP.NET
Fullstack Engineer
Dot Net Backend Developer
Custom web apps & REST APIs (ASP.NET Core)
$600
Claude
AI Developer
AI Automation
AI & workflow automation (n8n, OpenAI, Claude)
$600
ASP.NET
Dot Net Backend Developer
Backend Engineer
ERP & e-commerce integrations (C#/.NET)
$600