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Ari C.
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Ari C.

Applied AI Engineer & Senior Data Scientist

I am an applied AI engineer and senior data scientist with experience building production-ready AI systems that solve real business problems, not just demos or experiments. My background spans data science, machine learning, and AI product engineering, with a focus on systems that are reliable, maintainable, and aligned with real business needs. I have worked end to end across the AI stack, from data ingestion and modeling to APIs, automation, and customer-facing tools. I am the founder of Context Systems, where I build applied AI and agent-based systems, and the CTO and co-founder of Textbook, an AI agent–based conversational booking platform. This experience means I understand how to balance technical rigor with timelines, budgets, and real product constraints. My work often involves applying large language models in practical settings, especially when they need to be combined with structured data, external tools, and deterministic logic. This includes retrieval-augmented generation, decision support systems, and AI workflows that require more than simple prompting. Recent work includes building conversational AI agents for real businesses, designing RAG systems that combine documents, databases, and APIs, creating AI-driven decision support tools with clear reasoning, and automating internal workflows and operational systems. I frequently work in Python and build backend systems that support real users and real data. I am not a prompt-only AI freelancer. I specialize in robust, explainable systems designed to run in production and scale responsibly. Clients work with me when they need someone who can own a problem end to end, communicate clearly with technical and non-technical stakeholders, and deliver clean, working solutions without unnecessary complexity. If you have an idea that needs to be designed, built, or stabilized into a real system, I can help.

🇺🇸Atlanta, United States$100/hr100% JSS5.00 (6)Since Nov 2019

Earnings and projects

MRR
$6.2k

Last 6 months ÷ 6

World#3,620 / 412k
🇺🇸Country#1,349 / 62.1k
Revenue, last 30 days
$0

Last 6 months: $37k

Total earnings
$126k

Billed in all: $133k

World#29,636 / 412k
🇺🇸Country#6,370 / 62.1k
Per project
$14k

$12k in the last 6 months

World#10,184 / 412k
🇺🇸Country#1,769 / 62.1k
Projects, last 6 months
3
0% fixed100% hourly
World#66,482 / 412k
🇺🇸Country#8,998 / 62.1k
Projects in all
9
44% fixed56% hourly
World#212,271 / 412k
🇺🇸Country#30,262 / 62.1k

Earnings, last 30 days

$133kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$130k$132k$134k$136kOct 9Oct 24Nov 8

Skill rankings: Top 1% in Prompt Engineering

Ranked by MRR among everyone on Upwork with the skill.

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  3. #31AI Bot1,765 freelancers · 🇺🇸 #10Top 2%
  4. #39Prompt Engineering2,860 freelancers · 🇺🇸 #12Top 1%
  5. #46Chatbot Development3,106 freelancers · 🇺🇸 #10Top 1%
  6. #71AI Consulting2,322 freelancers · 🇺🇸 #27Top 3%
  7. #74Software Development2,923 freelancers · 🇺🇸 #21Top 3%
  8. #112Retrieval Augmented Generation3,618 freelancers · 🇺🇸 #32Top 3%