We hired two senior backend engineers for our first FreeSWITCH project. Smart guys, wrote clean code, shipped fast.
Took them a month just to get comfortable reading SIP traces.
That's the thing nobody warns you about with telecom projects the gap between "good developer" and "good FreeSWITCH developer" is bigger than most teams expect. It's not about coding skill. It's about protocol-level knowledge that only comes from production deployments.
Wrote about the specific mistakes I've seen (and made) over 8 years of FreeSWITCH work from dialplan architecture gone wrong to codec mismatches that only show up after you go live with a carrier.

https://www.hirevoipdeveloper.....com/staff-augmentati

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