Ask HN: US-based non-enterprise programming conferences?

What are some US-based conferences for people interested in software or computer science? Topics can be broad or narrow, but ideally:

- accessible to a range of working professionals (and not an academic colloquium for a small circle of graduate students)

- not focused on enterprise and big business (e.g., not Snowflake Summit or Databricks Summit)

- mostly focused on topics in software, computer science, and programming languages (not hardware makers/hackers)

- preferably with a strong component of bringing people together in person to share some kind of passion, project, or personal interest

Suggestions?