SaaS & Backend2023 – 2026
Field Sales & CRM SaaS Platform
Multi-tenant SaaS platform giving field sales teams order, invoicing, customer and CRM management. I am the primary backend engineer and built most of the product across 1,000+ commits.
Portfolio
Projects
SaaS products, integration services, AI/LLM features and earlier enterprise work. Client names of commercial projects are withheld for confidentiality.
AI & LLM2025
Embeddable Gemini Chatbot
Gemini-powered customer assistant and management API that can be embedded into websites via iframe and runs with audience-specific system prompts.
AI & LLM2026
SyncFlowAI — WhatsApp Business AI Flow Platform
Backend for a platform that lets businesses build AI-driven conversation flows and lead capture scenarios on WhatsApp Business.
AI & LLM2026
AI Digital Transformation Pre-Assessment
B2B pre-assessment and lead capture platform that collects a visitor's industry and problem in a few steps and uses OpenAI to produce a solution approach, estimated gains and a lead score.
AI & LLM2025
OnurC.AiRouter — .NET AI Gateway Library
Versioned .NET library that puts OpenAI, Google Gemini, OpenRouter and Hugging Face models behind a single client interface.
AI & LLM2025
PerAsist — AI Expert Assistant Platform
Web and mobile platform where users chat with domain-specific AI expert personas and generate personal plans and activity schedules.
AI & LLM2025
OCR + LLM Document Processing Service
Service that extracts Turkish and English text from scanned documents and then uses an LLM to clean it and turn it into structured data.
AI & LLM2025
Speech-to-Text Transcription API
ASP.NET Core API that turns audio and video files submitted by URL into text with Amazon Transcribe.
SaaS & Backend2023 – 2026
Online Academy / E-Learning Platform
Backend of an e-learning platform with courses, videos, books, events, assignments, quizzes, promotions and subscriptions.
Integration2026
Multi-Tenant e-Invoice / e-Archive Service
Multi-tenant e-Invoice/e-Archive service integrated with Uyumsoft, with separate admin and tenant workspaces and a management panel.
SaaS & Backend2023 – 2026
Subscription, Payment & Shared Microservices
Subscription management, payment, file management, authentication and e-mail services that different products can integrate with easily.
SaaS & Backend2025 – 2026
Short-Video Challenge Platform
Backend of a mobile platform where users join challenges with videos and collect votes, with credit and leaderboard systems.
SaaS & Backend2025 – 2026
Exam Management Platform
Platform where students register and complete exam applications, with exam processes, payments and results managed end to end.
SaaS & Backend2025
Product Sales & Rental Engine
SaaS commerce software that lets customers offer their products through sales and rentals.
SaaS & Backend2026
E-Commerce Backend
E-commerce API built on .NET 10 with cart, order, payment and shipping flows.
SaaS & Backend2024 – 2025
Reservation Platform
Node.js/TypeScript backend where businesses manage services, rooms and reservations.
Integration2023 – 2024
E-Commerce & ERP Integration (Germany)
Backend service for a German client that moves marketplace sales into Xentral ERP and manages each order until it is handed to the carrier.
Integration2023
Tax Return Platform (Germany)
Backend, API and server infrastructure of a tax return application used in Germany.
Earlier Work2022
Telecom Self-Service Mobile App
App that lets a telecom operator's customers pay and track bills and view usage.
Earlier Work2020
ISP Operations Software
Dealer management, installation tracking, call-center bot and broadband lookup systems for an internet service provider.