I agree with both earlier responses. Both might work with different kids or even on different days. And try YAWNING when you're putting him down! It's contagious, and tends to be relaxing.
Babies are so excited when they master new skills. They work and work to perfect them, and sleep gets pushed aside by all that excitement for awhile. What I might try is to sit quietly beside the crib when I put the little guy down in a drowsy state, with just enough light that he knows you're there and can see that you are calm and acting drowsy (yawning) and not being upset by his activity. When he stands, lay him down and very quietly say the identical thing each time, maybe, "Please lie down; it's time to sleep now." The exercise should eventually become tiring and boring, and sleep will take over.
But if that does nothing but feed his energy, then leave the room and come back in only if he sounds truly scared or desperate. (My grandson would capture a knee between crib slats and end up collapsed on his foot, hurting and unable to free himself, so we would need to keep an eye on him.) I don't believe long periods of crying are helpful to kids' emotional adjustment in the long run, but a little fussing won't hurt anything.
Whatever you do, try not to see it as a battle. Babies are not our combatants, but it's hard to remember that when we are tired and needing to catch up on other tasks. But if you tense up around this or any situation, your adorable boy will probably sense that, and eventually learn to push your buttons. Not necessarily as a deliberate ploy, either. It is just one of the ways human beings adapt and learn to get their needs met.
However you respond to it, this stage will pass, and another will take its place. Happy parenting!