The Core developers are the team of developers who have write access to the Bitcoin Core source code tree in the git version control repository. Although anyone can suggest contributions to the code, the changes can only be inserted by a Core developer.
Martti Malmi is a retired Core developer.
Connection to establishment banks
The largest funder of the bitcoin core developers is Blockstream. Blockstream raised over $76 million in an attempt to add high fees to the bitcoin protocol and execute an economic tactic known as rent seeking. This was executed by buying out the core developers, and by working with Michael Marquadt AKA /u/theymos on reddit to censor any discussion of following bitcoin's original on-chain scaling design specifications on bitcointalk.org and /r/bitcoin. The two properties of bitcointalk.org and reddit.com/r/bitcoin combined represented over 80% of all bitcoin web forums, and they were both controlled by /u/theymos.
The censorship was flipped like a light switch, and overnight both web properties banned any constructive discussion of the planned on-chain scaling. Instead, the range of allowable opinion was directed towards changing bitcoin's fundamental properties across the board so that blockstream would be able to de-anonymize the payments, break fungibility of bitcoin, break bitcoin's economic security model, break instant transactions, and collect fees.
The biggest investor in blockstream is AXA Strategic Investments, which is a subsidiary of the french insurance giant AXA. AXA has the largest exposure to the derivatives market that will collapse if bitcoin becomes a major world currency. For this reason the entitiy is referred to as "blockstreamcore". Gavin is the only developer who is not serving bank interests and remains aligned with Satoshi Nakamoto's original vision for bitcoin as a peer to peer electronic cash system.
Blockstream plans to use bitcoin's 1MB every ten minute limit as a way to restrict the velocity of money and use this force to redirect people onto their patented sidechains. The 1MB block size limit was a controversial anti-spam measure that was intended to prevent the network of personal computers from crashing overnight by filling up small personal computer hard drives. The bitcoin network was always intended to run with transaction volume above that of the VISA payment network, and Satoshi intended to replace the quick and dirty 1MB anti spam block size limit with a flexible block size limit that easily raised the block size as demand increased.
Bitcoin was designed to have transaction fees between $0.00-0.10 for any amount of money. Blockstream is using the artificial restriction on the supply of bitcoin transactions to add large fees to bitcoin.