Joshua

Founder of HafenPixel – freelance web developer from Hamburg, Germany. I build WordPress plugins, Shopify themes and custom web tools. I write about real projects on hafenpixel.de – how they work tech

Hamburg, Germany Joined on Feb 17, 2026 info@hafenpixel.de https://hafenpixel.de/

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he/him

Work

Freelancer

Joshua

Nov 10

AI literacy: what Article 4 of the EU AI Act requires since July 2026

#ai #eu #management

5 min read

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Joshua

Nov 2

AI in my own business: how I work with AI agents

#ai #productivity #freelance #automation

5 min read

Joshua

Oct 13

How I Manage a Corporate Client's Websites as a Solo

#wordpress #freelancing #webdev #devops

3 min read

Joshua

Oct 6

Moving a Live SaaS from Firebase to Supabase: 283 Functions, 139 Tables, Zero Password Resets

#supabase #firebase #postgres #saas

5 min read

Joshua

Sep 9

I Got a WordPress Site to 972 ms — and I Won't Show You a Before/After

#wordpress #performance #webdev #seo

4 min read

Joshua

Sep 3

I Replaced a CMS With Two JSON Files and Nine Functions

#showdev #php #webdev #architecture

4 min read

Joshua

Aug 27

A Shopify Theme Update Is a Migration, Not a Click

#shopify #performance #webdev #ecommerce

5 min read

Joshua

Aug 20

Your Stripe Webhook Is Not Your Entitlement System

#stripe #saas #firebase #webdev

6 min read

Joshua

Jul 22

I Spent 16 Months Building My Own SaaS Solo — Why the Last 10% Takes Months

#saas #webdev #vue #ai

5 min read

Joshua

Jun 2

I Fixed a Broken onOffice WordPress Integration – Here's What 3 Agencies Missed

#wordpress #php #webdev #tutorial

5 min read

Joshua

May 5

Self-Revoking Guest Tokens: A WordPress Pattern Without Cron

#wordpress #php #security #architecture

3 min read

Joshua

Apr 28

Why I Wrote a Pixel-by-Pixel Multiply Blend in PHP-GD to Beat Dompdf

#wordpress #php #webdev #pdf

4 min read

Joshua

Mar 10

I Built a WordPress Plugin That Calculates Snow Loads Per DIN EN 1991-1-3 – Using OpenRouteService for Elevation Data

#wordpress #php #api #webdev

5 min read

Joshua

Mar 3

Building a SaaS Licensing System With WooCommerce – No Custom Tables, No License Keys

#wordpress #php #saas #webdev

4 min read

Joshua

Feb 24

I Built 3 Shopify Cart Features Without a Single App – Just Liquid & JS

#shopify #javascript #webdev #ecommerce

6 min read

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Joshua

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AI literacy: what Article 4 of the EU AI Act requires since July 2026

Want to connect with Joshua?

AI in my own business: how I work with AI agents

How I Manage a Corporate Client's Websites as a Solo

Moving a Live SaaS from Firebase to Supabase: 283 Functions, 139 Tables, Zero Password Resets

I Got a WordPress Site to 972 ms — and I Won't Show You a Before/After

I Replaced a CMS With Two JSON Files and Nine Functions

A Shopify Theme Update Is a Migration, Not a Click

Your Stripe Webhook Is Not Your Entitlement System

I Spent 16 Months Building My Own SaaS Solo — Why the Last 10% Takes Months

I Fixed a Broken onOffice WordPress Integration – Here's What 3 Agencies Missed

Self-Revoking Guest Tokens: A WordPress Pattern Without Cron

Why I Wrote a Pixel-by-Pixel Multiply Blend in PHP-GD to Beat Dompdf

I Built a WordPress Plugin That Calculates Snow Loads Per DIN EN 1991-1-3 – Using OpenRouteService for Elevation Data

Building a SaaS Licensing System With WooCommerce – No Custom Tables, No License Keys

I Built 3 Shopify Cart Features Without a Single App – Just Liquid & JS