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Louis Christoph D.
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Louis Christoph D.

Shopify Technical Partner | Integrations, Data & Custom Logic

I'm the technical department for Shopify merchants who don't have one. When something in or around your store needs to work, I build it, test it and keep it running: integrations with other systems, data imports and clean-ups, store migrations, custom pricing logic, backups, automations and theme work in Liquid. Shopify is where most of my work happens, but it isn't a requirement. I've also cleaned up a CRM with 12,800 records, set up email sending infrastructure from domain authentication to warm-up, and run the servers behind client backups. If it's technical and your business depends on it, ask me. A few recent examples: - For a plant nursery, I replaced a five-part app setup for splitting pre-orders with Shopify's native order splitting. All 339 pre-order variants were checked afterwards, and a revenue leak of about €205 per season is closed. - For a B2B medical supplier, the "request a quote instead of checkout" logic was spread across 8 places in 6 files. I moved it into one snippet, found 41 of 140 product templates with a hidden buy section, and confirmed on all 399 active products that only the intended 7 changed. - For a bar-supplies merchant, I built a weekly backup of 14 data types, the theme and all files to an encrypted server, and tested the restore before handing it over. - For a luxury brand moving between two Shopify stores, I migrated 2,132 orders with their full history, with zero failed orders. Tools I've set up or built integrations for include Shopify Admin API, Shopify Flow, Klaviyo, Pipedrive, Instantly, Channable, Google Merchant Center, ADCELL, Matrixify, Judge.me, Superchat, Hetzner, GitHub Actions and Python, among many others. Before I change anything on a live store, I save its current state so it can be restored. Every delivery ends with a written check of what was tested and what passed. You get one person who knows the whole store, not a handoff between five. I work with Claude Code, Anthropic's AI development tool, and I'm certified through the Anthropic Partner Network. That means more gets done per hour. Every change still goes through my hands and gets checked by me, so the speed doesn't cost quality. Top Rated, 100% Job Success. Shopify Partner and Klaviyo Bronze Partner. German native, fluent in English and Spanish, at home with EU requirements (VAT/OSS, GDPR, withdrawal rights). Tell me what isn't working or what you want built. I'll tell you what it takes, what it costs and where the risks are before you commit to anything.

🇩🇪Freiburg, Germany$70/hr100% JSS5.00 (9)Since Oct 2025
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Earnings and projects

MRR
$1.5k

Last 6 months ÷ 6

World#31,900 / 412k
🇩🇪Country#222 / 3,842
Revenue, last 30 days
$998

Last 6 months: $9.1k

World#42,867 / 412k
🇩🇪Country#272 / 3,842
Total earnings
$15k

Billed in all: $15k

World#165,720 / 412k
🇩🇪Country#1,273 / 3,842
Per project
$1.2k

$1.5k in the last 6 months

World#109,767 / 412k
🇩🇪Country#879 / 3,842
Projects, last 6 months
6
33% fixed67% hourly
World#34,408 / 412k
🇩🇪Country#265 / 3,842
Projects in all
12

Across 13 contracts

31% fixed69% hourly
World#183,652 / 412k
🇩🇪Country#1,585 / 3,842

Earnings, last 30 days

$15.3k+$998 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$14.0k$14.5k$15.0k$15.5kOct 9Oct 24Nov 8

Skill rankings: Top 6% in Data Cleaning

Ranked by MRR among everyone on Upwork with the skill.

  1. #18Store Migration139 freelancers · 🇩🇪 #1Top 13%
  2. #82Pipedrive744 freelancers · 🇩🇪 #2Top 11%
  3. #126Google Merchant Center763 freelancers · 🇩🇪 #2Top 17%
  4. #192Data Migration1,443 freelancers · 🇩🇪 #1Top 13%
  5. #225Email Deliverability1,880 freelancers · 🇩🇪 #3Top 12%
  6. #227Liquid1,844 freelancers · 🇩🇪 #4Top 12%
  7. #233Data Cleaning3,952 freelancers · 🇩🇪 #3Top 6%
  8. #316GraphQL3,404 freelancers · 🇩🇪 #2Top 9%