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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: ✅ Delivered 30+ projects in e-commerce, education, and logistics ✅ Expert in JavaScript, Python, React, and QA Automation ✅ 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!

🇵🇱Lodz, Poland$40/hr100% JSS5.00 (18)Since Nov 2011

Earnings and projects

MRR
$7.6k

Last 6 months ÷ 6

World#2,388 / 412k
🇵🇱Country#29 / 2,852
Revenue, last 30 days
$7.5k

Last 6 months: $45k

World#2,685 / 412k
🇵🇱Country#34 / 2,852
Total earnings
$316k

Billed in all: $332k

World#6,997 / 412k
🇵🇱Country#147 / 2,852
Per project
$9.9k

$45k in the last 6 months

World#16,157 / 412k
🇵🇱Country#220 / 2,852
Projects, last 6 months
1

Across 3 contracts

33% fixed67% hourly
World#128,092 / 412k
🇵🇱Country#866 / 2,852
Projects in all
32

Across 37 contracts

24% fixed76% hourly
World#92,223 / 412k
🇵🇱Country#660 / 2,852

Earnings, last 30 days

$332k+$7.5k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$320k$325k$330k$335kOct 8Oct 23Nov 7

Skill rankings: #1 in 1 skill of 13

Rarest: top 0.23% in Regression Testing, of 1,279. Ranked by MRR among everyone on Upwork with the skill.

  1. 1Robot Framework74 freelancers · 🇵🇱 #1Top 1%
  2. 2Apache JMeter270 freelancers · 🇵🇱 #1Top 0.74%
  3. 3Regression Testing1,279 freelancers · 🇵🇱 #1Top 0.23%
  4. #4Test Automation Framework325 freelancers · 🇵🇱 #1Top 1%
  5. #5Web Testing1,763 freelancers · 🇵🇱 #1Top 0.28%
  6. #6Manual Testing2,261 freelancers · 🇵🇱 #1Top 0.27%
  7. #6Automated Testing1,000 freelancers · 🇵🇱 #1Top 0.60%
  8. #6Cypress712 freelancers · 🇵🇱 #1Top 0.84%