Polish Market SEO for Water Delivery Website

I'm looking for an experienced SEO agency or freelancer to handle ongoing SEO for my WordPress website. The site is on a .com domain, but I'm targeting the Polish market.
Niche: Bottled water delivery (18.9L / 5-gallon water cooler bottles).
Scope of work:

Keyword research and on-page SEO for Polish-language queries related to water delivery in 18.9L containers
Primary focus on regional/local keywords (city- and region-level targeting)
Secondary focus on nationwide (Poland-wide) keywords
Technical SEO audit and fixes on the WordPress site
Ongoing link building and content recommendations
Google Business Profile (GBP) optimization and local SEO — improving rankings in Google Maps and local pack results
Visibility in AI-powered search tools / GEO (Generative Engine Optimization) — optimizing the site so it gets recommended and cited by AI assistants such as ChatGPT, Google AI Overviews / Gemini, Perplexity, and Claude when users ask about water delivery services

Requirements:

Proven experience ranking sites in the Polish market (please share case studies or example rankings)
Native or fluent Polish for keyword research and content
Experience with WordPress
Experience with local SEO and GBP optimization
Familiarity with GEO / AEO (Answer Engine Optimization) techniques and how to get cited in AI-generated answers
Transparent reporting (monthly progress reports with rankings, traffic, and actions taken)

When applying, please include:

Examples of past projects in the Polish market (ideally local/service businesses)
Any experience or results with AI search visibility (citations in ChatGPT, Perplexity, AI Overviews, etc.)
Your proposed approach for the first 1–3 months
Pricing structure (monthly retainer or project-based)
Estimated timeline to see initial results

Long-term cooperation preferred.