Marco Kriechbaumer
CoreCommerce Technologies
Currently accepting new projects · Replies within one business day
eCommerce Software Development
Magento & OpenMage Specialist - platform development, integrations, performance, and infrastructure for European ecommerce. Custom software built to last, not scaffolded from a template.
Core Expertise
What I Do
Platform Development
Custom module development, theme work, and deep backend logic for ecommerce platforms - currently Magento and OpenMage LTS. I work at the EAV level, building solutions off-the-shelf extensions can't handle.
Custom Integrations & APIs
REST and SOAP integrations connecting your platform to ERP, PIM, and payment systems, plus custom PHP APIs when an off-the-shelf connector doesn't exist.
Performance Optimisation
Full-page cache tuning, database query optimisation, and infrastructure-level profiling for ecommerce platforms where speed directly affects revenue.
Maintenance & Modernisation
Root cause analysis, staged platform upgrades, and incremental modernisation of legacy codebases - without unnecessary rewrites.
Selected Work
Recent Projects
Image Import Performance: From 52 Minutes to 22 Seconds
A product image import timed out after 10 minutes on every run, processing only ~100 of 580 images. The client had worked around this for months by importing 7-8 products at a time, an extremely slow and manual process.
DHL Packstation Checkout Integration
DHL Packstations are one of the most-used delivery options in Germany, but the existing checkout had no mechanism to collect a Packstation address: no Postnummer field, no address type distinction, and no compatibility with the SAP order export that downstream fulfillment depended on.
OpenMage LTS Version Upgrade - Zero Regressions
A multi-store production shop with Varnish and Redis was running an outdated OpenMage LTS release with known security vulnerabilities and several backend bugs affecting customer account management, newsletter templates, and price rule processing. The multi-store, Varnish-cached setup made a zero-downtime upgrade non-trivial.
Tools & Technologies
Technologies
The tools I use daily to build, maintain, and modernise ecommerce platforms - proven across real production stores, not just a resume list.