Backend-focused Full-Stack Developer building scalable APIs, distributed systems, integrations and SaaS products with Node.js & TypeScript.

I'm Mert Efe Soroğlu, a software developer and product builder from Istanbul, Türkiye.

My primary ecosystem is JavaScript / TypeScript and Node.js, with a strong focus on backend engineering, API development, system integrations, distributed systems and full-stack product development.

I enjoy building software that solves real problems — from developer libraries and API clients to business integrations, game-server infrastructure and complete SaaS platforms.

My development journey has evolved from small JavaScript projects into increasingly complex systems involving:

• 🔌 API & system integrations
• ⚙️ Backend architectures
• 📦 Open-source npm packages
• 🧾 E-invoicing infrastructure
• 💳 Payment systems
• 🎮 Game-server infrastructure
• 🔐 Authentication systems
• ⚡ Real-time communication
• 📨 Message queues & asynchronous processing
• 🗄️ Caching & high-speed data access
• 🎨 CMS & theme ecosystems
• ☁️ SaaS products

One of my main focuses is Crafter, an independent software ecosystem that I build and develop.

Crafter is a game-server software ecosystem designed to help gaming communities build, manage and grow their online infrastructure.

Crafter connects the web, game server, commerce and community layers into a unified ecosystem.

• 🎮 Game-server infrastructure
• 👤 Player & user management
• 🛒 Server stores
• 💳 Payment integrations
• 🔐 Authentication
• ⚡ Real-time server communication
• 📊 Analytics
• 🎨 Customizable themes
• 🧩 Marketplace infrastructure
• 🔌 Developer integrations
• 🌐 Modern web infrastructure

Crafter is built around gaming communities, with its strongest current server-side ecosystem centered around Minecraft.

The goal behind Crafter is simple:

Give game server owners the tools to build, operate and grow a professional online community from a single ecosystem.

Crafter goes beyond a traditional CMS by combining:

Web Applications · APIs · Authentication · Payments · Game-Server Communication · Community Infrastructure

Crafter is developed as a collection of open-source components rather than a single application.

Java · MIT

A WebSocket-based, real-time server plugin connecting Crafter with Minecraft servers.

Features include:

• Spigot support
• Velocity support
• Real-time delivery
• Server ↔ Web communication
• Store integration
• In-game delivery systems

CrafterConnect forms the bridge between Crafter's web infrastructure and the Minecraft server.

Java · AGPL-3.0

A Minecraft authentication system for Velocity proxies built around a virtual Limbo server.

It extends Crafter's infrastructure into the actual player connection and authentication layer.

Java · AGPL-3.0

A LimboAuth-based authentication plugin developed for the Crafter ecosystem.

TypeScript

A command-line tool for managing Crafter themes and Marketplace workflows.

The CLI is designed to make theme development and distribution easier within the Crafter ecosystem.

Crafter includes an extensible theme ecosystem.

Current public themes include:

• Liquided Theme
• Aethelgard Theme

Themes allow the visual layer of a Crafter installation to be customized without changing the core platform.

Another important area of my work is business software and e-invoicing integrations.

I developed and published Node.js / TypeScript packages for the İşNet NetteFatura ecosystem.

A TypeScript / Node.js client for the NetteFatura SOAP services.

The project provides a typed and developer-friendly interface for operations around:

• e-Fatura
• e-Arşiv
• Taxpayer queries
• Invoice queries
• Invoice cancellation
• UBL-TR
• XML document generation
• PDF / HTML document operations
• Production and test environments

📦 npm: nettefatura-api

💻 GitHub: EfeSorogluu/NetteFatura-API

A Node.js / TypeScript client for automating interactions with the NetteFatura web portal.

It deals with browser-oriented workflows including:

• Authentication
• Session management
• CSRF handling
• Company management
• Customer management
• Product/service management
• Invoice workflows

The project is independent and is not affiliated with or endorsed by İşNet or GİB.

📦 npm: nettefatura-portal

💻 GitHub: EfeSorogluu/NetteFatura-Portal

One of the strongest themes across my projects is integration engineering.

I enjoy connecting systems that were never originally designed to work together.

My projects have involved integrations with:

• 🧾 E-invoicing platforms
• 💳 Payment providers
• 📱 WhatsApp
• 💬 Discord
• 🎮 Minecraft
• 🌐 Web portals
• 🛒 Game stores
• 🔌 External APIs
• ⚡ WebSocket services
• 📡 Hardware interfaces

I enjoy solving the problem at the center of modern software:

How do we make different systems communicate reliably?

My strongest technical focus is backend engineering and building systems that can scale beyond a single application.

I work with:

• REST APIs
• SOAP APIs
• WebSockets
• Authentication & authorization
• Session management
• Caching
• Message queues
• Asynchronous processing
• Event-driven architectures
• Background workers
• Third-party integrations
• Payment infrastructure
• Database-driven applications
• Automation
• Server-side architectures

My primary backend ecosystem is:

Node.js · TypeScript · JavaScript · Express

For scalable and reliable systems, I also work with:

Redis · RabbitMQ · Docker

I work with architecture patterns such as:

API → Queue → Worker → Database

and:

Application → Redis → RabbitMQ → Background Services

These patterns allow applications to handle:

• Asynchronous workloads
• Background jobs
• Caching
• Inter-service communication
• Event-driven workflows
• High-volume operations

I enjoy designing systems where individual components can communicate reliably while remaining maintainable and independently scalable.

Game-server development has played an important role in my journey.

I've worked with technologies and systems around:

• Minecraft
• Spigot
• Velocity
• Limbo
• Websender
• WebSocket communication
• Authentication
• Server ↔ Web communication
• In-game commerce
• Automated delivery systems

This experience eventually evolved into the Crafter ecosystem.

I publish reusable developer tools and libraries through npm.

Some of my work includes:

• nettefatura-api
• nettefatura-portal
• WhatsappJS
• Shopier API
• Websender.js
• ItemSatış Custom API
• MFRC522 Raspberry Pi integration

I enjoy turning recurring engineering problems into reusable libraries and developer tools.

I believe the best way to become a better developer is to build real systems and solve real problems.

My approach is:

Build → Understand → Improve

I care about:

• Architecture
• Maintainability
• Security
• Performance
• Reliability
• Developer experience
• Documentation
• Real-world usability

I prefer learning technologies by building with them rather than learning them only in theory.

• 🎓 Studying at Istanbul Arel University
• 🚀 Developing Crafter
• ⚙️ Building Node.js / TypeScript applications
• 🔌 Developing APIs, SDKs and integrations
• 🧾 Working with e-invoicing and business software
• 🎮 Working with game-server infrastructure
• 📨 Building asynchronous systems with messaging technologies
• 🗄️ Working with Redis and database-driven architectures
• 📦 Publishing open-source developer tools
• 🌐 Building independent SaaS products