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Rajko D.

Rajko D.

Full-Stack Engineer & Backend Lead | FastAPI, AWS, PostgreSQL

I'm a senior full-stack developer with 7+ years of experience, specializing in backend architecture, API development, and cloud infrastructure. I currently serve as a backend lead on a production system, where I: Design and maintain FastAPI servers with PostgreSQL databases Manage AWS infrastructure and integrate with third-party hosting services Build and maintain end-to-end systems from database to deployment My background includes both startup and enterprise environments. I take ownership of technical decisions, optimize for scalability, and ensure reliable system operations. What I deliver: Clean, maintainable APIs (FastAPI, Node) Robust scraping and automation solutions (Scrapy, Selenium, anti-bot strategies) Full-stack applications (React, Angular) Cloud infrastructure on AWS (EC2, RDS, S3, Lambda, CloudFront, and other) Database design (PostgreSQL, MongoDB, MySQL) I'm looking for long-term collaborations where I can bring my full-stack and backend leadership experience to help build and scale reliable products. TECHNOLOGICAL SKILLS Python • SQL • PostgreSQL • NoSQL databases • ETL tools • AWS (Amazon Web Services) • Docker • Kubernetes (Hands-on) • Pandas • RESTful APIs • Git • GitHub • PyTest • Selenium • Jupyter Notebooks • Spyder • Bash/Shell scripting • React • Angular • HTML • CSS • JavaScript/TypeScript AREAS OF EXPERTISE Python Development • Data Pipeline Automation • Database Management • Cloud Computing • Containerization • Orchestration Tools • Data Processing • API Development • Version Control • Quality Assurance • Documentation • Monitoring and Logging • Security Best Practices • Agile Methodologies • Collaboration Tools • ETL Processes • Deployment • Front-End Development

🇷🇸Odzaci, Serbia$30/hr100% JSSSince Aug 2024

Earnings and projects

MRR
$139

Last 6 months ÷ 6

World#125,792 / 412k
🇷🇸Country#1,128 / 4,015
Revenue, last 30 days
$0

Last 6 months: $833

Total earnings
$3.2k

Billed in all: $3.4k

World#291,886 / 412k
🇷🇸Country#3,162 / 4,015
Per project
$3.2k

$833 in the last 6 months

World#52,094 / 412k
🇷🇸Country#557 / 4,015
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇷🇸Country#1,119 / 4,015
Projects in all
1
0% fixed100% hourly
World#360,671 / 412k
🇷🇸Country#3,690 / 4,015

Earnings, last 30 days

$3.4kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$3,350$3,400$3,450$3,500Oct 8Oct 23Nov 7

Skill rankings: Top 20% in Database Programming

Ranked by MRR among everyone on Upwork with the skill.

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  8. #704Linux3,038 freelancers · 🇷🇸 #15Top 23%