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Alexander R.
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Alexander R.

Fractional CTO | Senior Software Engineer | Automation QA Specialist

Working in AI since 2019 | Ex-DataRobot, Ex-Chegg, Ex-Starz, Ex-BookRenter | over 15 years of experience in web development, AI, ML and QA automation. I specialize in creating efficient, scalable digital solutions that help businesses meet their goals across industries like e-commerce, education, logistics, and media. Quick Facts: βœ… Delivered 30+ projects in e-commerce, education, and logistics βœ… Expert in JavaScript, Python, React, and QA Automation βœ… Focused on reducing code complexity and maintenance costs Skills and Expertise: - Expert in ML & AI, building intelligent backends with TensorFlow, PyTorch, OpenAI APIs, LangChain, and vector databases for next-gen automation and real-time insights. - Frontend & Backend Development: JavaScript, TypeScript, React, Django, Ruby on Rails, FastAPI, Node.js - Databases: PostgreSQL, MySQL, MongoDB, Redis - Testing & Automation: n8n, Cypress, Playwright, Selenium, REST API testing, performance testing - DevOps: Docker, Jenkins, GitHub Actions, AWS What I Offer: I deliver more than code - I provide strategic solutions. My focus is on simplifying processes, optimizing workflows, and ensuring long-term scalability and cost-effectiveness. Types of Projects: - AI-driven solutions like speech-to-text, AI chatbots, virtual assistants, AI agents, recommendation systems, content analysis, and automation tools. - Web applications, e-commerce platforms, and marketplaces - SaaS platforms (mobile + web clients) - Data Science and Machine Learning applications I’m passionate about building future-ready solutions that blend technical expertise with a proactive approach. Let’s discuss how I can contribute to your next project!

πŸ‡΅πŸ‡±Lodz, Poland$40/hr100% JSS5.00 (18)Since Nov 2011
MRR
$7,843
🌍#2,260/363K
πŸ‡΅πŸ‡±#32/2,496
Recent Earnings
$47,058
🌍#2,260/363K
πŸ‡΅πŸ‡±#32/2,496
Total Earnings
$303K
🌍#7,026/363K
πŸ‡΅πŸ‡±#142/2,496
Avg. Per Project
$9,783
🌍#15.2K/363K
πŸ‡΅πŸ‡±#196/2,496
Recent Projects
5
1f5h
🌍#87.8K/363K
πŸ‡΅πŸ‡±#640/2,496
Total Projects
31
7f28h
🌍#87.8K/363K
πŸ‡΅πŸ‡±#640/2,496
MRR Performance Over Time
$50k$25k$0
6 mo ago3 mo agoNow
Coming SoonGathering historical data
World Skill Rankings
of 53
#1
Robot FrameworkTop <0.01%
#3Apache JMeter
#5Test Automation Framework
#5Automated Testing
#6Regression Testing
#7Web Testing
#8Manual Testing
#9Cypress
#14Jenkins
#99Docker
#118MySQL
#402Python
#435JavaScript
πŸ‡΅πŸ‡±Poland Skill Rankings
of 29
#1
Web TestingTop <0.01%
#1Regression Testing
#1Manual Testing
#1Apache JMeter
#1Test Automation Framework
#1Cypress
#1Automated Testing
#1Robot Framework
#2Jenkins
#4MySQL
#5Docker
#7Python
#7JavaScript
Alexander R. β€” Top 1% in Poland | UpworkMRR