The /r/ethdev subreddit is one of the most active forums where more than 40k developers discuss everything related to Ethereum development.
Browsing through the subreddit not only do you find the latest developer-related information and tutorials, you can also ask questions when you get stuck or showcase the project you've been working on.
Protip 1: Use the "Filter by flairs" feature on the right hand side to find the posts you're interested in.
Protip 2: Take note of the "Stickied posts" where you'll find a "Who's hiring, and who's for hire" thread.
- EthDev