Ayhan Yalcin

Available for freelance projects

E-Commerce · Technology · Automation

I build systems that make commerce actually work.

I design, build and automate e-commerce systems — connecting shops, ERP, APIs, data and marketing processes with real-world business experience.

  • JTL-Shop
  • JTL-Wawi
  • Python
  • PHP
  • SQL
  • APIs
  • Automation
  • CRM
  • Marketing Technology
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Ayhan Yalcin

  • 15+

    Years of hands-on
    e-commerce experience

  • 5,000+

    Campaigns &
    newsletters shipped

  • JTL

    Deep practical experience
    across Shop, Wawi & WMS

  • Business + Code

    End-to-end thinking,
    from process to production

01Positioning

More than
development.

I work at the intersection of technology, e-commerce and business operations.

I understand processes from order creation and ERP through shipping, returns, CRM and marketing — and I build the technical systems that connect them. Not a developer waiting for a specification, and not a manager forwarding one. The person who can sit in both rooms.

  1. 01Business
  2. 02Process
  3. 03Data
  4. 04Code
  5. 05Automation

02Expertise

Four disciplines,
one system.

Each area feeds the next. The seams between them are where most e-commerce setups break — and where I work.

01

E-Commerce Development

JTL-Shop, NOVA child templates, plugins, PHP, APIs, databases and custom commerce functionality.

  • JTL-Shop
  • PHP
  • Smarty
  • SCSS
  • JavaScript
  • MySQL

02

ERP & Process Automation

JTL-Wawi workflows, SQL Server, integrations, shipping processes, returns and operational automation.

  • JTL-Wawi
  • MSSQL
  • Workflows
  • APIs
  • DHL
  • Automation

03

Python & Data

Internal tools, API integrations, data processing, scraping, analysis and automation.

  • Python
  • REST APIs
  • SQL
  • Docker
  • Data Processing

04

CRM & Marketing Automation

Campaign management, segmentation, lifecycle marketing, lead nurturing, reactivation and automated customer journeys.

  • CRM
  • Newsletter
  • Segmentation
  • Automation
  • Analytics

03Selected Work

Selected work.

Systems, tools and processes built for real-world e-commerce operations.

01

Self-Service Returns Platform

  • JTL-Shop
  • PHP
  • DHL API
  • JTL-Wawi
  • Automation

Development of a complete self-service returns solution including customer portal, guest returns, automated DHL label creation, return processing and ERP integration.

Result Reduced manual support work and transformed the return process into a largely automated digital workflow.

02

JTL-Shop Architecture & Relaunch

  • JTL-Shop 5
  • NOVA
  • Smarty
  • SCSS
  • Architecture

Development of a modular NOVA child-template architecture with selective template overrides, custom styling and upgrade-safe implementation without core modifications.

Result A shop front-end that survives updates instead of being rebuilt after them.

03

E-Commerce Automation

  • Python
  • SQL
  • APIs
  • Automation

Development of internal tools and automated workflows connecting shop systems, ERP, marketplaces, shipping providers and internal processes.

Result Recurring manual routines replaced by scheduled, observable jobs.

04

CRM & Marketing Automation

  • CRM
  • Newsletter
  • Segmentation
  • Automation

Planning, creation and technical implementation of more than 5,000 newsletters and campaigns including segmentation, automated workflows, reactivation and lifecycle communication.

Result Campaign output that scales without scaling the manual effort behind it.

04Technology

The stack
behind the work.

E-Commerce

  • JTL-Shop
  • JTL-Wawi
  • JTL-WMS
  • Amazon
  • OTTO
  • Marketplaces

Development

  • Python
  • PHP
  • SQL
  • MSSQL
  • MySQL
  • JavaScript
  • HTML
  • SCSS

Integration

  • REST APIs
  • Webhooks
  • DHL APIs
  • Marketplace APIs
  • Automation

Infrastructure

  • Docker
  • Linux
  • Git
  • Cloudflare
  • Webserver

Marketing

  • CRM
  • Newsletter Marketing
  • Marketing Automation
  • Analytics
  • Tracking

05Experience

Experience.

  1. 2018 — Present

    E-Commerce & Marketing Lead

    DOGO / DOTALES

    E-commerce architecture, JTL systems, development, marketplaces, CRM, automation, analytics and technical infrastructure.

  2. 2014 — 2018

    E-Commerce & Operations

    Shop operations, ERP processes, logistics, returns and the first automated workflows around order and shipping handling.

  3. 2011 — 2014

    Digital Commerce & Marketing

    Online sales, campaign and newsletter marketing, customer communication and the operational groundwork behind it.

06Working Style

Business first.
Then technology.

I don't approach projects from a pure software-development perspective.

Years of hands-on e-commerce experience allow me to understand the operational problem first — and then build the technical solution. From orders and inventory to shipping, returns, CRM and marketing automation.

  1. 01

    Understand

    The process before the ticket.

  2. 02

    Design

    The system, not just the screen.

  3. 03

    Build

    Upgrade-safe and maintainable.

  4. 04

    Automate

    So it keeps working without me.

07Availability

Available for
selected projects.

  • Freelance
  • Contract
  • Interim
  • Consulting
  • Remote
  • Hybrid

Based in Germany · working across Europe

08Contact

Let's build something that actually works.

Available for freelance, contract and selected consulting projects.

Start a conversation