I do not recommend extensive work (full-time job) on such a small device. In fact I do not recommend doing a full-time job on anything smaller than 14". One can

I do not recommend extensive work (full-time job) on such a small device. In fact I do not recommend doing a full-time job on anything smaller than 14". One can really ruin the finger joints, risk RSI even more on smaller keyboards, ruin the neck, ruin the spine and really ruin the eyes even at 11". In fact you need a proper chair and proper desk and proper keyboard and proper monitor at eye level, to do a full-time job and not ruin your health. But, I understood the OP question as not about being productive but being capable of doing some small work if needed when on the move, a the device is small enough to be with you everywhere you go and not consider it a brick load in your bag after 10 hours of carrying it with you, but still performant enough to be able to make a patches and shorter coding session on the move.