OpenCart Programmer for long-term cooperation (SEO + marketing + website support)

Project Description:
I am looking for a responsible programmer with experience in OpenCart for long-term collaboration. The site is active, commercial (online store). This is not a one-time job — I need someone who can consistently perform technical tasks from the SEO specialist and marketer.

Tasks:
– execution of technical specifications from SEO (speed, indexing, structure, template adjustments);
– execution of specifications from the marketer (events, tags, analytics, integrations);
– minor improvements to the site (forms, blocks, layout adjustments);
– checking the correctness of the implementation of changes;
– basic site support (not 24/7).

Important:
– we work only with clear specifications;
– all tasks are documented in writing;
– payment for actual work done;
– feedback and reasonable deadlines are required;
– I am not looking for "cheap and fast", I am looking for normal working collaboration.

Requirements:
– experience with OpenCart;
– understanding of SEO adjustments (robots, sitemap, speed, indexing);
– experience in integrating analytics (GA4, GTM — a plus);
– responsibility and communication.

Collaboration Format:
– hourly payment or payment per task (to be discussed);
– long-term collaboration;
– starting with small tasks.

When submitting your application, I immediately expect an answer to the question:
How do you usually work with specifications from the SEO specialist?