Modern WordPress Refresh Needed

Hello,

I am looking for an experienced freelancer to update and improve my company website Huoltomega.fi to better meet current business needs.
The current website is built on WordPress. The goal is not necessarily a complete rebuild, but to modernize and refine the site to be clearer, lighter, and above all fast and efficient.

Project goals:
-Modern, trustworthy, and professional appearance
-Clear presentation of services related to technical and repair services
-Excellent performance and fast loading times
-Good usability on both mobile and desktop
-Clear contact options / contact form
-Search-engine-friendly structure (basic SEO)

Site language:

The website must be Finnish-language only
All content, navigation, and forms must be in Finnish

Site structure / pages (current and required):
Home
About Us
Financing
Heat Pumps
Appliance Repair
Antenna Installations
Contact
Blog / News section (existing content should be preserved and easy publishing enabled)

Technical preferences:
-WordPress (lightweight theme or custom solution)
-Minimal use of plugins
-Clean, maintainable implementation
-Easy to update and manage going forward
-No heavy page-builder dependency
-In your proposal, please include:
-Experience with similar projects (references preferred)
-Suggested implementation approach (theme-based or custom)
-Estimated timeline
-Fixed price or hourly rate estimate
--Optional maintenance or ongoing support offer
-The website represents a technical service business, so clarity, speed, and reliability are more important than heavy visual effects or marketing gimmicks.

I look forward to your proposal.