How do you promote early‑stage SaaS tools to developer teams?

I’ve been building an on‑call voice alert SaaS (WakeUpDev) and recently launched it. Through testing, we learned a lot about what dev teams actually need (like 2‑way phone ACK loops and CSV configs instead of dashboards).

Now I’m curious:

For those of you who’ve launched developer‑focused products, where did you find your first users?

Which channels or communities helped you get traction?

How do you balance organic reach vs. paid campaigns at the early stage?

I’d love to hear your experiences so we can all learn how to better connect with the right audience.