WordPress Speed Optimisation

We are looking for experts on Page Speed Optimisation for our existing website:
https://www.smart-light.co.uk/

We are currently failing Core Web Vitals Assessment, according to
https://pagespeed.web.dev/report?url=https%3A%2F%2Fsmart-light.co.uk%2F
having most issues in FTP and LCP areas.

Our project requirements are as follow:
- Speed optimisation
- JavaScript specialists
- Image processing and compression
- Maintaining the speed over a long period
- Work together with existing team
- Hourly based - long term