Hi there, I'm Matt Sergei (do call me Matt, please) and as webmaster, developer and former technical writer would like to help you.
I've checked your article outline and would create it as planned. With:
1. SEO copywriting principles (mainly for Google).
2. Code images inserted with [login to view URL] output (can be set to have Windows usual buttons instead of Mac inspired). I'm not sure if you wish to show maps in the blog post as well (or only code). Images would be better for SEO with proper SEO markup for them.
3. The content will be manually written and checked as requested (grammar, semantic rules, plagiarism).
I have the required skills, recently made this Leaflet map for Australian client, showing "concave" regions on a world map based on their customers area tag:
[login to view URL]
Now, I'm 26 years a webmaster, scripting web maps/charts/animations more extensively in last 7+ years. My daily rate is $150 (120+ EUR) because I'm incorporated yet I'm willing to create your articles if you plan at least 5 per month, probably for several months.
Regards and hope you're safe,
Matt