Ubuntu SFTP Client with sudo capability

Recently I completely switched to Ubuntu for my work computer. But I have one problem. On Windows I used WinSCP to connect to remove development server via SFTP and I can't find any app for Ubuntu that would work for me here. The problem is not the SFTP itself - I can connect to the server without any problems - however I need to login as unprivileged user and then run sudo to be able to traverse into directories my unprivileged user can't access. In WinSCP I could configure my *WinSCP server* as sudo su -c /bin/sftp-server and as *shell* I had to put sudo su -. Is there any app that can connect to SFTP in simmiliar matter like WinSCP could on Windows?