Bespoke graphics for algo-trading website (no stock photos)

We are estabilished company focused on algo-trading on cryptocurrency markets (in business since 2017). We are currently starting new project aimed at generating new clients. We already have mockups and logo for new website, but we miss more authenticity and brand identity, which stock-photos simply cannot provide in our startup. WHAT WE NEED: We need creative freelancer, who can provide bespoke graphics to replace our current, stock graphics, which look rather too generic and we are not able to find such, which would suit our needs. Graphics need to have at least subtle reference to website name and business subject (algorithmic trading, robots, blockchain, cryptocurrencies etc). Right now, we will need 3 or 4 graphics, to most visited public sections to help us build identity. If we are satisfied with your work, we might need more similar jobs at later stage. Achieving results will require communication and inputs (current design and logo, some our ideas / illustration, which need to be done professionally) from our side, so chosen freelancer know, how to satisfy our needs. We expect creative and proactive approach, if you don't like some our ideas / visions or you don't think it would look good, please say us and propose different solution. Main target is professional looking (not generic) website, which would differentiate us from competition. We will provide more details on individual basis and all needed materials needed for achieving results to chosen freelancer. Please list some references to your previous work.