We are a blockchain development consultancy - https://hack.bg/.
Working on projects in the field since 2015 and as a company since 2016. We've worked on numerous different projects on various networks - Ethereum, Polygon, Binance Smart Chain, Avalanche, Polkadot, Terra, Secret Network, Tezos, Aeternity. We've worked on core network implementations, SDKs and VMs for some of our clients, and application level smart contracts and full-stack dapps for others.