Skip to content
BackNov 7
Aru B.
Upwork badge

Aru B.

Fractional CTO | AI Developer

I design and deploy production-grade AI systems: from data pipelines to scalable LLM applications. With 7+ years in ML/AI, I specialize in LLM systems, RAG architectures, and MLOps, helping teams move from prototype to reliable, scalable AI in production. My focus is not just building models but ensuring they perform under real-world constraints: latency, cost, hallucination control, and continuous improvement. What I build -End-to-end ML pipelines: ingestion, training, deployment, monitoring -RAG systems with proper evaluation harnesses (retrieval quality, regression catching) -LLM observability: prompt versioning, tracing, feedback loops -Scalable inference (real-time and batch) with GPU optimization -CI/CD for ML with MLflow, Airflow, automated retraining -AI agents with guardrails and reliable tool use Selected results -Fraud detection pipeline (real-time inference) → ~$890K in losses prevented -Forecasting system using ensemble models → 31% accuracy lift over baseline -Multiple LLM products running in production under client SLAs -$3M+ in measurable business impact across deployments (happy to walk through specifics on a call) Stack -Languages/frameworks: Python, FastAPI -LLMs: OpenAI, Anthropic, HuggingFace, LangChain, LlamaIndex -Vector DBs: Pinecone, Weaviate, ChromaDB, FAISS -Infra: AWS, Docker, Supabase, MLflow, Airflow How I work -Replies in 0–4 hours on business days -Production-grade code with tests and docs, not throwaway notebooks -Clear scope, direct communication, focused on business outcomes -Revenue, automation, speed-to-market — that's the scoreboard Let's turn your AI idea into a working product. Send an invite with your project details and I'll get back to you with a clear plan.

🇫🇷Paris, France$150/hr100% JSS4.88 (118)Since Sep 2020

Earnings and projects

MRR
$9.1k

Last 6 months ÷ 6

World#1,596 / 412k
🇫🇷Country#10 / 2,884
Revenue, last 30 days
$10k

Last 6 months: $55k

World#1,390 / 412k
🇫🇷Country#8 / 2,884
Total earnings
$124k

Billed in all: $129k

World#30,435 / 412k
🇫🇷Country#154 / 2,884
Per project
$813

$27k in the last 6 months

World#140,240 / 412k
🇫🇷Country#872 / 2,884
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇫🇷Country#511 / 2,884
Projects in all
152

Across 173 contracts

64% fixed36% hourly
World#15,447 / 412k
🇫🇷Country#82 / 2,884

Earnings, last 30 days

$129k+$10.3k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$110k$120k$130kOct 8Oct 23Nov 7

Skill rankings: Top 0.50% in Data Analysis

Top 1% in 4 of 19 skills, ranked by MRR among everyone on Upwork with the skill.

  1. 2Vertex AI90 freelancers · 🇫🇷 #1Top 2%
  2. 3Python Scikit-Learn555 freelancers · 🇫🇷 #1Top 0.54%
  3. #8LLM Prompt799 freelancers · 🇫🇷 #1Top 1%
  4. #9MLOps468 freelancers · 🇫🇷 #1Top 2%
  5. #13TensorFlow1,661 freelancers · 🇫🇷 #1Top 0.78%
  6. #16AI Builder1,112 freelancers · 🇫🇷 #1Top 1%
  7. #18PyTorch1,585 freelancers · 🇫🇷 #1Top 1%
  8. #26LLM Prompt Engineering2,457 freelancers · 🇫🇷 #1Top 1%