Recep Şen

TB1REC

CTO @Taptoweb

CTO at Taptoweb, where I designed a 28-service microservices platform powering Easyapp.ai - a no-code mobile app builder with 250,000+ users. I specialize in .NET/C#, Domain-Driven Design, and agentic AI systems.

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Posts

Latest articles and technical blog posts

Blog post thumbnail: Your Function Signature Is Lying: Managing Errors as Values in TypeScript

Your Function Signature Is Lying: Managing Errors as Values in TypeScript

Discover why try/catch falls short in TypeScript, the advantages of managing errors as values with Railway Oriented Programming, and pragmatic functional programming with tsentials' Result<T>, Maybe<T>, RuleEngine and more.

05/16/2026Read Article
Blog post thumbnail: Stop Writing Code, Start Managing Systems: The Real Potential of AI-Powered Development

Stop Writing Code, Start Managing Systems: The Real Potential of AI-Powered Development

Stop treating AI as an autocomplete and start thinking like a CTO. A comprehensive guide to Claude Code covering CLAUDE.md strategy, context management, hooks, custom agents, multi-agent orchestration, model routing, and self-learning systems.

02/28/2026Read Article
Blog post thumbnail: AI Coding Tools: The Complete Guide to Claude Code, OpenCode & Modern Development

AI Coding Tools: The Complete Guide to Claude Code, OpenCode & Modern Development

From zero to production: Master AI-assisted development with the right tools. Learn Claude Code, OpenCode, oh-my-opencode, MCP, skills, and advanced techniques for professional development.

01/24/2026Read Article
Blog post thumbnail: Production-Grade AI Development with Claude Code: A Comprehensive Ecosystem Guide

Production-Grade AI Development with Claude Code: A Comprehensive Ecosystem Guide

Transform Claude Code from a simple Q&A tool into a professional-grade development environment with plugins, custom agents, skills, MCP servers, and hooks.

01/21/2026Read Article
Blog post thumbnail: Performance Analysis of Parameter Passing Methods in C#

Performance Analysis of Parameter Passing Methods in C#

Deep dive into C# parameter passing: Comparing struct, class, record & ref types with benchmarks. Learn best practices for optimization.

02/20/2025Read Article
Blog post thumbnail: The Modern Way to Manage C# Business Rules: Rule Engine Pattern

The Modern Way to Manage C# Business Rules: Rule Engine Pattern

A modern C# pattern for managing business rules that provides centralized control, high testability, and optimal performance through the Result Pattern

02/04/2025Read Article
Blog post thumbnail: Google Cloud Secret Manager Integration for Your .NET Applications

Google Cloud Secret Manager Integration for Your .NET Applications

A .NET library for Google Cloud Secret Manager integration with features like prefix filtering, region-specific configuration, and JSON/raw secret support

01/30/2025Read Article
Blog post thumbnail: Blockchain Based E-Voting System

Blockchain Based E-Voting System

This research proposes the development of a secure and fast online voting system using blockchain technology. This system not only offers low processing delay and high security level but also simplifies the verification of data integrity across multiple polling stations.

01/23/2022Read Article

Projects

An AI-powered no-code platform for creating and monetizing mobile mini apps, accessible via link, no download required. Users describe their business and AI generates a production-ready app in under a minute, complete with push notifications, loyalty programs, in-app payments, appointment booking, and 20+ more built-in services. Features its own app store across 16 categories. Led the architecture and development of the microservices infrastructure serving 250,000+ users.

AIMobileNo-Code

An AI-powered SaaS platform for restaurant management and QR-based ordering. Businesses manage orders, receipts, and analytics through a kanban board, with catalog management covering products, categories, coupons, option groups, cross-selling, and package menus. Supports multi-branch management, team access control, table grouping, and multiple order types (dine-in, takeaway, delivery). Customers order via QR web menu, AI chatbot, or WhatsApp AI bot.

SaaSAINext.jsTypeScriptPostgreSQLMulti-tenant

An enterprise-grade quality management system built on ISO 9001 standards. Covers document management with two-stage approval workflows, revision history, controlled distribution, and read confirmations, alongside a corrective action (CAR/DFI) module with an 8-step workflow, root cause analysis, cost tracking, and PDF reports. Includes real-time SSE notifications via Redis, async email delivery through BullMQ, and role-based access control.

Next.jsTypeScriptPostgreSQLRedisBullMQDocker

A fast, SEO-optimized portfolio template with unlimited language support, dark/light themes, and fully customizable sections for any profession. Built with Next.js 15 and React 19. MIT licensed.

Next.jsReactTypeScripti18nOpen Source

Simplifies C# development by providing essential building blocks, including a framework for implementing common design patterns such as the Result Pattern, Any Pattern, and Maybe Pattern.

C#.NETDesign PatternsFunctional Programming

Simplifies TypeScript error handling with railway-oriented programming. Provides Result<T>, Maybe<T>, Rule Engine, DDD patterns, and 20+ composable modules for type-safe functional programming with zero dependencies.

TypeScriptFunctional ProgrammingError HandlingDDDOpen Source

A production-ready starter template for .NET microservices built with the Aspire Framework. Provides service defaults, health checks, distributed tracing, and container orchestration out of the box, a structured foundation for building observable, cloud-native services.

.NETAspireMicroservices

A self-hosted event photo sharing platform. Guests scan a QR code to upload photos and videos from their phones, which appear in a shared gallery after admin moderation. Features in-browser video re-encoding, multi-storage backend (Cloudflare R2, Google Drive, local disk), event countdown, location map, and WhatsApp fallback for uploads.

Next.jsTypeScriptBunSQLiteSelf-HostedOpen Source

A real-time wedding and event guest management system. Track guests by name, potential and confirmed headcount, priority group, transport type, and organizer. The live dashboard synchronizes capacity statistics, group breakdowns, and transport data across multiple organizers simultaneously via WebSockets.

Next.jsTypeScriptPostgreSQLSocket.ioReal-timeOpen Source

Turkey's most comprehensive salary comparison tool for calculating and comparing net income between SGK employees (4/a) and Bağ-Kur self-employed (4/b). Covers gross/net salary, taxes, premiums, and employer costs with 2026 TES Reform simulation, Young Entrepreneur and Service Export exemptions, and TRY/USD currency support.

JavaScriptFinanceTaxSGKBağ-Kur

Certificates & Licenses

Dive Into Refactoring

Refactoring.Guru

Dec 2024

ID: #000053812

View Credential

Pragmatic Clean Architecture

Milan Jovanovic Tech

Dec 2024

ID: cert_y7sc2384

View Credential

Golang 101

Mustafa Akgül Özgür Yazılım Kampı

Sep 2023

Centralized log management with Graylog

Mustafa Akgül Özgür Yazılım Kampı

Feb 2023

CCNA-1

Mustafa Akgül Özgür Yazılım Kampı

Jan 2020

Skills

AI, Agents & Automation

Agentic AI Frameworks (e.g., AutoGen)
Proficient
LLM Integration & Fine-Tuning
Expert
Vector DBs & Semantic Caching Systems
Proficient
AI Workflows & Automation
Expert
Automated Cost-Optimization Strategies
Proficient

Core Architecture & Backend

.NET & C#
Expert
Microservices & Domain-Driven Design (DDD)
Expert
Node.js & Nest.js
Proficient
Go (Golang)
Familiar

Data & Messaging

PostgreSQL
Expert
Redis
Expert
RabbitMQ
Expert
MongoDB
Proficient
Elasticsearch
Proficient

Cloud Native & DevOps

Google Cloud Platform (GCP)
Proficient
Docker & Containerization
Proficient
CI/CD Pipeline Architecture
Proficient
Kubernetes (K8s)
Proficient

Frontend & API Layer

TypeScript
Expert
Next.js
Proficient
API Design
Expert
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