Design battery system with solar panels

I am looking for a freelancer to design a battery system with solar panels to meet my off-grid needs. I have decided that I need a medium system, with a capacity of 5-10 kWh, that will be used in a rural area. It is essential that the solar panels are designed for the specific geographic location, as off-grid living can be unpredictable. I am looking for a freelancer who can design a system that is both reliable and cost-effective while using the best available technology. I need someone who has experience in this field and understands the requirements for creating a system that is tailored to my specific needs.