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Yevhen S.

Yevhen S.

lead / senior software engineer

Over the past 12 years of professional Java development, I have taken on various roles in projects—including developer, mentor, conference attendee, and tutor for beginners. My overall Java enterprise experience includes building clientserver applications, working with concurrent systems, implementing high-load system strategies, and conducting unit, integration, and end-to-end testing. Most of the projects I’ve contributed to were in the pharmacy, healthcare, and financial sectors. I have worked with a wide range of frameworks, including Spring Infrastructure, Micronaut, Quarkus, and traditional J2EE. Each project involved developing scalable and modular applications tailored to the specific strengths of the framework. Additionally, I have designed and implemented concurrency solutions to ensure performance, thread safety, and efficient resource utilization in multi-threaded environments.

🇺🇦Dnipro, Ukraine$41/hr100% JSS5.00 (6)Since Sep 2025

Earnings and projects

MRR
$7.1k

Last 6 months ÷ 6

World#2,760 / 412k
🇺🇦Country#177 / 14.3k
Revenue, last 30 days
$6.6k

Last 6 months: $42k

World#3,444 / 412k
🇺🇦Country#219 / 14.3k
Total earnings
$94k
World#42,083 / 412k
🇺🇦Country#2,784 / 14.3k
Per project
$23k

$21k in the last 6 months

World#4,586 / 412k
🇺🇦Country#398 / 14.3k
Projects, last 6 months
2
0% fixed100% hourly
World#88,921 / 412k
🇺🇦Country#3,419 / 14.3k
Projects in all
4

Across 7 contracts

0% fixed100% hourly
World#283,743 / 412k
🇺🇦Country#10,811 / 14.3k

Earnings, last 30 days

$93.8k+$6.6k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$85k$90k$95kOct 8Oct 23Nov 7

Skill rankings: #1 in 1 skill of 15

Rarest: top 1% in MongoDB, of 10,865. Ranked by MRR among everyone on Upwork with the skill.

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  7. #31Apache Kafka981 freelancers · 🇺🇦 #6Top 3%
  8. #38Spring Boot2,150 freelancers · 🇺🇦 #4Top 2%