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Yunus K.

Yunus K.

Database Engineer

I am a Computer Engineer focused on data infrastructure, performance optimization, and software development. I ensure that critical data systems run fast, secure, and reliably, turning complex database and backend challenges into stable business outcomes. Strong SQL and DBA experience (PostgreSQL, MySQL, MS SQL). Query troubleshooting, performance tuning, and system optimization. Secure backup, recovery, and data-integrity practices. Proactive maintenance, documentation, and monitoring. Backend development experience supporting scalable and efficient applications.

🇹🇷Istanbul, Turkey$40/hr70% JSSSince Nov 2025
GlobeUpwork

Earnings and projects

MRR
$1.9k

Last 6 months ÷ 6

World#23,459 / 412k
🇹🇷Country#188 / 3,515
Revenue, last 30 days
$2.3k

Last 6 months: $12k

World#18,184 / 412k
🇹🇷Country#157 / 3,515
Total earnings
$19k

Billed in all: $20k

World#142,795 / 412k
🇹🇷Country#1,108 / 3,515
Per project
$19k

$5.8k in the last 6 months

World#6,227 / 412k
🇹🇷Country#59 / 3,515
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇹🇷Country#683 / 3,515
Projects in all
1

Across 3 contracts

0% fixed100% hourly
World#360,671 / 412k
🇹🇷Country#3,136 / 3,515

Earnings, last 30 days

$20.4k+$2.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$18k$20k$22kOct 8Oct 23Nov 7

Skill rankings: Top 4% in Query Optimization

Ranked by MRR among everyone on Upwork with the skill.

  1. 2Oracle Performance Tuning21 freelancers · 🇹🇷 #1Top 10%
  2. 3Query Optimization69 freelancers · 🇹🇷 #1Top 4%
  3. #88Architecture1,368 freelancers · 🇹🇷 #2Top 6%
  4. #125Database Management1,655 freelancers · 🇹🇷 #2Top 8%
  5. #135Troubleshooting1,460 freelancers · 🇹🇷 #1Top 9%
  6. #196Database3,249 freelancers · 🇹🇷 #4Top 6%
  7. #249Architectural Design4,048 freelancers · 🇹🇷 #7Top 6%
  8. #376DevOps4,403 freelancers · 🇹🇷 #5Top 9%