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Serhii K.

Serhii K.

Senior AI Engineer | Applied AI & LLM Systems | Python

I help companies turn AI ideas into working, production-ready software. I’m a senior AI/ML engineer with with a track record of delivering production AI systems, building data, machine learning, and software systems for healthcare, pharma, retail, logistics, and large digital platforms. My current focus is Generative AI, LLM applications, AI agents, RAG, and intelligent automation. I work hands-on from architecture and prototyping through implementation, testing, deployment, and optimization. What I can build: - LLM applications and AI agents - RAG systems and document intelligence - AI-powered data extraction and automation - Structured LLM workflows with validation and guardrails - Python/FastAPI backends and REST APIs - Data and ML pipelines - AI evaluation and quality-control systems - OpenAI, Anthropic, Hugging Face and self-hosted models - Cost, latency, and inference optimization Technology: Python, FastAPI, SQL, PyTorch, scikit-learn, OpenAI API, Anthropic, Hugging Face, RAG, LangChain/LangGraph, Docker, Kubernetes, AWS, Azure, Databricks, PostgreSQL. I’m particularly effective when the problem is still unclear and needs to be turned into a practical technical solution rather than just another proof of concept. I can work as a hands-on AI engineer, technical lead, or independent consultant from a focused AI feature to an entire production system.

🇩🇪Aachen, Germany$40/hr100% JSS4.52 (16)Since Aug 2009

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#13,323 / 412k
🇩🇪Country#83 / 3,842
Revenue, last 30 days
$0
Total earnings
$218k

Billed in all: $231k

World#13,323 / 412k
🇩🇪Country#83 / 3,842
Per project
$7.3k
Projects, last 6 months
0
World#209,850 / 412k
🇩🇪Country#1,761 / 3,842
Projects in all
30

Across 32 contracts

44% fixed56% hourly
World#97,486 / 412k
🇩🇪Country#774 / 3,842

Earnings, last 30 days

$231kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$227.5k$230.0k$232.5k$235.0kOct 8Oct 23Nov 7

Skills