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Mark K.
CTO | Staff engineer (14+) y.o.
14+ years building production software — from SaaS platforms to AI agents running in daily production. Tech lead for 7 years, brought over $6M in profit to our customers with the current team. Of course, AI has been adopted, working with codex and c.code.
🇨🇿Prague, Czech Republic$75/hr100% JSS4.86 (22)Since May 2017
Earnings and projects
MRR
$16$16
Last 6 months ÷ 6
World#168,152 / 412,022 / 412k
🇨🇿Country#271 / 669 / 669
Revenue, last 30 days
$16$16
Last 6 months: $98
World#104,188 / 412,022 / 412k
🇨🇿Country#148 / 669 / 669
Total earnings
$88,967$89k
Billed in all: $90,551$91k
World#44,529 / 412,022 / 412k
🇨🇿Country#95 / 669 / 669
Per project
$2,224$2.2k
$16 in the last 6 months
World#71,099 / 412,022 / 412k
🇨🇿Country#134 / 669 / 669
Projects, last 6 months
6
Across 8 contracts
50% fixed50% hourly
World#34,405 / 412,022 / 412k
🇨🇿Country#44 / 669 / 669
Projects in all
40
Across 50 contracts
54% fixed46% hourly
World#75,668 / 412,022 / 412k
🇨🇿Country#147 / 669 / 669
Earnings, last 30 days
$90.6k+$16 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
Skill rankings: Top 24% in Elasticsearch
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