Sergey S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

FreeSwitch, Kamailio, Kazoo DevOps

I have good skills in the administration of FreeSwitch and Kazoo servers This includes: - multi tenant installations, - creation of high availability clusters - protection against fraud - deploying servers in systems virtualization Amazon, Kubernetes, KVM, docker and VMWare

🇧🇬Pomorie, Bulgaria$60/hr100% JSS4.99 (50)Since Oct 2014

Earnings and projects

MRR (estimate)

≈ $0≈$0

An estimate from an earlier read

#19,132 / 412,022 / 412k

🇧🇬#95 / 1,161 / 1,161

Revenue, last 30 days

$0$0

Total earnings

$172,866$173k

Billed in all: $173,489$173k

#19,132 / 412,022 / 412k

🇧🇬#95 / 1,161 / 1,161

Per project

$2,470$2.5k

Projects, last 6 months

#209,850 / 412,022 / 412k

🇧🇬#517 / 1,161 / 1,161

Projects in all

Across 75 contracts

47% fixed53% hourly

#42,828 / 412,022 / 412k

🇧🇬#161 / 1,161 / 1,161

$173kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch

No data since Nov 5, 2026.

Skills

CentOS Linux TCP/IP VMware ESX Server VoIP Software Iptables Session Initiation Protocol Amazon EC2 FreeSWITCH Kamailio VoIP Administration

Sergey S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Earnings and projects

Earnings, last 30 days

Skills