Golang developer

I have been working as a Golang developer for 5 years in Tradingview (the most popular portal for traders) and Exmo (cryptocurrency exchange). In general, I was developing highload applications, services with not trivial business logic, daemons with high concurrency, very wide-range of things… Now I consider part-time or one-time projects in EU timezones I also have java and cpp experience (in astrophysics project when I was studying at the University), real experience in Java for a year while I was working in Tradingview