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Nassar A.

Nassar A.

Senior Java Engineer | Building Enterprise Solutions

I’m a Senior Java Software Engineer with strong experience in Spring Boot, microservices, and cloud-based enterprise systems. Over the past years, I’ve designed and built scalable backend solutions across different industries, including restaurant SaaS platforms, agriculture insurance systems, and data-driven logistics platforms. My focus is on backend architecture, API design, system integration, and data automation. I enjoy tackling complex distributed systems, optimizing performance, and ensuring reliability and scalability across services. My core skill set includes Java (Spring Boot), .NET Core, relational and cloud databases (PostgreSQL, BigQuery), workflow orchestration (Apache Airflow), and cloud infrastructure (AWS, Azure, and other modern platforms). I’m passionate about building efficient, resilient systems that simplify business processes and deliver measurable impact.

🇵🇸Ramallah, Palestinian Territories$35/hr90% JSS5.00 (5)Since Oct 2025

Earnings and projects

MRR
$6k

Last 6 months ÷ 6

World#3,803 / 412k
🇵🇸Country#10 / 676
Revenue, last 30 days
$5.6k

Last 6 months: $36k

World#4,617 / 412k
🇵🇸Country#10 / 676
Total earnings
$76k
World#52,362 / 412k
🇵🇸Country#56 / 676
Per project
$19k

$18k in the last 6 months

World#6,473 / 412k
🇵🇸Country#17 / 676
Projects, last 6 months
2
0% fixed100% hourly
World#88,921 / 412k
🇵🇸Country#105 / 676
Projects in all
4

Across 6 contracts

0% fixed100% hourly
World#283,743 / 412k
🇵🇸Country#524 / 676

Earnings, last 30 days

$75.9k+$5.6k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$70k$75k$80kOct 8Oct 23Nov 7

Skill rankings: Top 1% in MySQL

Ranked by MRR among everyone on Upwork with the skill.

  1. 3Gradle81 freelancers · 🇵🇸 #1Top 4%
  2. #9Docker Compose447 freelancers · 🇵🇸 #1Top 2%
  3. #9PostGIS225 freelancers · 🇵🇸 #1Top 4%
  4. #15Apache Airflow491 freelancers · 🇵🇸 #1Top 3%
  5. #18Software Design719 freelancers · 🇵🇸 #1Top 3%
  6. #18RabbitMQ552 freelancers · 🇵🇸 #1Top 3%
  7. #28Hibernate677 freelancers · 🇵🇸 #1Top 4%
  8. #55Spring Boot2,150 freelancers · 🇵🇸 #3Top 3%