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Alexander G.
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Alexander G.

AI/Backend Developer|Python, Node.js, LangChain, OpenAI, Pinecone, n8n

I’m an 𝐀𝐈 / 𝐏𝐲𝐭𝐡𝐨𝐧 and 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 / 𝐍𝐨𝐝𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 passionate about turning ideas into intelligent, data-driven products. My work bridges backend engineering with modern AI technologies: from 𝐋𝐌 integrations to 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 and 𝐝𝐚𝐭𝐚 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬. With experience in both 𝐏𝐲𝐭𝐡𝐨𝐧 and 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 / 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭, I build scalable APIs, connect machine learning models, and design reliable data flows for web and AI applications. 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐓𝐨𝐨𝐥𝐬 • AI & LLM Integration: OpenAI API, LangChain, Perplexity, Firecrawl, Parallel, Octagon • Automation & Workflows: n8n, Python scripts, REST / GraphQL APIs • Backend Development: Node.js, Express, Next.js, FastAPI • Databases & Vector Search: PostgreSQL, MySQL, Pinecone, Redis • Data Handling & Logic: TypeScript, JavaScript, OOP, SOLID principles • Architecture: Scalable, testable, event-driven and API-centric systems 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 • Multi-agent systems with 𝐑𝐀𝐆 + 𝐯𝐞𝐜𝐭𝐨𝐫 𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 • Smart automation and data-extraction pipelines • Scalable backends for SaaS and AI-driven platforms • Integrations with third-party APIs and cloud services I really enjoy building systems that combine AI intelligence with solid backend engineering.

🇺🇦Sumy, Ukraine$35/hr100% JSS4.34 (5)Since Feb 2022
GlobeUpwork

Earnings and projects

MRR
$5.8k

Last 6 months ÷ 6

World#4,100 / 412k
🇺🇦Country#269 / 14.3k
Revenue, last 30 days
$0

Last 6 months: $35k

Total earnings
$198k

Billed in all: $206k

World#15,543 / 412k
🇺🇦Country#1,228 / 14.3k
Per project
$28k

$12k in the last 6 months

World#3,220 / 412k
🇺🇦Country#292 / 14.3k
Projects, last 6 months
3
0% fixed100% hourly
World#66,481 / 412k
🇺🇦Country#2,681 / 14.3k
Projects in all
7

Across 9 contracts

0% fixed100% hourly
World#236,190 / 412k
🇺🇦Country#9,312 / 14.3k

Earnings, last 30 days

$206kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$202.5k$205.0k$207.5k$210.0kOct 9Oct 24Nov 8

Skill rankings: Top 0.92% in ExpressJS

Ranked by MRR among everyone on Upwork with the skill.

  1. #52ExpressJS5,651 freelancers · 🇺🇦 #6Top 0.92%
  2. #58NestJS3,757 freelancers · 🇺🇦 #11Top 2%
  3. #200MySQL14,471 freelancers · 🇺🇦 #27Top 1%
  4. #273SQL12,904 freelancers · 🇺🇦 #25Top 2%
  5. #305PostgreSQL12,850 freelancers · 🇺🇦 #39Top 2%
  6. #362TypeScript15,967 freelancers · 🇺🇦 #50Top 2%
  7. #558Node.js25,795 freelancers · 🇺🇦 #71Top 2%
  8. #736JavaScript41,429 freelancers · 🇺🇦 #104Top 2%