A list of audio-development-related forums you can join.
- EDM Production Discord Server - Not strictly DSP related, but this is an active community of sound designers and electronic music producers.
- KVR DSP Forum - A large community of plugin developers.
- Rust Audio Discord Server - A community of passionate Rust audio programmers.
- Rust Community Discord Server - Not strictly DSP related, but the people there can help you with any Rust questions.
- The Audio Programmer Discord Server - Discord community for audio programmers.
- They also have a website offering services such as job recruitment, development, UI/UX design, and marketing.