Back to leaderboardLast snapshot: Nov 7
Piotr K.
Java expert
Over the last 15 years, I have developed a wide range of applications using Java technologies. Spring / Spring Boot, Hibernate JSP, JSF, Apache Wicket, Apache Struts HTML.CSS, JavaScript, jquery, mySql, postgreSQL, Oracle. My skills are confirmed by certifications: VMWare Spring Certified Profesional OCP (Oracle Certified Professional Java SE 17) SCJP (Sun Certified Java Programmer) SCWCD (Sun Certified Web Component Developer).
🇵🇱Poznań, Poland$30/hr100% JSS4.03 (8)Since Jul 2010
Earnings and projects
MRR
$3,208$3.2k
Last 6 months ÷ 6
World#11,529 / 412,022 / 412k
🇵🇱Country#153 / 2,852 / 2,852
Revenue, last 30 days
$0$0
Last 6 months: $19k
Total earnings
$869,381$869k
Billed in all: $896,469$896k
World#827 / 412,022 / 412k
🇵🇱Country#18 / 2,852 / 2,852
Per project
$86,938$87k
$19k in the last 6 months
World#280 / 412,022 / 412k
🇵🇱Country#4 / 2,852 / 2,852
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412,022 / 412k
🇵🇱Country#866 / 2,852 / 2,852
Projects in all
10
Across 24 contracts
21% fixed79% hourly
World#201,797 / 412,022 / 412k
🇵🇱Country#1,494 / 2,852 / 2,852
Earnings, last 30 days
$896kNothing 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: #1 in 1 skill of 12
Rarest: top 4% in SQL Programming, of 1,149. Ranked by MRR among everyone on Upwork with the skill.
- Apache Wicket3 freelancers · 🇵🇱 #1Top 33%🇵🇱#1 of 1
- Java Servlet API81 freelancers · 🇵🇱 #1Top 4%🇵🇱#1 of 2
- #9Jakarta Server Pages79 freelancers · 🇵🇱 #2Top 11%🇵🇱#2 of 2
- #13Spring Security248 freelancers · 🇵🇱 #3Top 5%🇵🇱#3 of 5
- #30PostgreSQL Programming511 freelancers · 🇵🇱 #1Top 6%🇵🇱#1 of 12
- #42SQL Programming1,149 freelancers · 🇵🇱 #2Top 4%🇵🇱#2 of 8
- #48Hibernate677 freelancers · 🇵🇱 #4Top 7%🇵🇱#4 of 20
- #73Spring Framework880 freelancers · 🇵🇱 #6Top 8%🇵🇱#6 of 27