[CV // Production AI Systems]

Emanuel Otel

> Senior AI Engineer focused on production LLM systems, RAG, AI agents, evaluation, and observability. Built and led AI products across enterprise chatbots, document parsing, job classification, voice AI, and retrieval systems. Strong Python, FastAPI, and cloud background, with a track record of turning vague AI ideas into shipped systems.

career_trace

[Work Experience]

01 // AI Team

Senior Data Scientist - Publicis Groupe

Cluj-Napoca, Romania
Jan 2026 - Present

Working on Spirax Sarco's MiM chatbot, an enterprise AI assistant for internal knowledge retrieval, support, and document-based question answering.

  • Lead observability implementation across the MiM platform, adding trace instrumentation in code and guiding the dev team on debugging, QA, and trace-based root-cause analysis.
  • Designed evaluation frameworks comparing MiM against Microsoft Copilot and other AI systems, measuring retrieval quality, answer quality, grounding, and user-facing behavior.
  • Generated large-scale synthetic evaluation datasets from ~4,000 PDFs, producing ~280,000 QA pairs for retrieval and answer-quality benchmarking.
  • Built end-to-end chat enrichment pipelines for query classification, intent detection, and downstream routing into retrieval and analytics workflows.
  • Designed feedback-to-action workflows turning raw user feedback into structured triage, root-cause analysis, and Jira-ready improvement items.

02 // AI Team

Senior AI Engineer - BinarCode (Contractor)

Cluj-Napoca, Romania
Sep 2025 - Dec 2025

AI Document Parser

Production agentic AI system transforming unstructured construction documents into validated JSON workflows.

  • Designed and built Gemini-powered extraction agents for 8 entity types, converting messy PDFs and Excel files into validated structured data with Langfuse observability.
  • Built a parallel AI processing pipeline handling 10k+ extraction requests with retry logic, async execution, and Pydantic-based output validation.
  • Developed a FastAPI backend with async format detection, Docker-based deployment, and CI/CD workflows; built a Next.js frontend with real-time progress tracking, reasoning traces, and multi-format exports.

AI ISCO Classifier

AI-powered job classification system mapping job postings to ISCO-08 international occupation standards.

  • Designed a RAG-based classification engine achieving 73.2% top-1 and 97.43% top-10 accuracy, delivering 500x cost reduction vs commercial APIs ($0.0002 vs $0.10 per classification).
  • Engineered multi-language semantic search (EN, DE, FR, NL) using multiple embedding models and pgvector on PostgreSQL/Supabase across 436 ISCO occupations and 1,744 records.
  • Built a production REST API with FastAPI, auth, batch processing, and cost tracking; self-hosted with Docker and Kubernetes for GDPR compliance. Reduced client costs from ~€2,000/month to ~€4/month for 20k monthly classifications.

03 // AI Team

Senior AI Engineer - RebelDot (Contractor)

Cluj-Napoca, Romania
Feb 2025 - Sep 2025

Led AI initiatives across two major clients:

Vorwerk (Platform Team)

Supported internal AI platform centralization across multiple teams.

  • Helped consolidate AI development practices across teams by defining shared tooling, observability standards, and implementation guidelines.
  • Drove adoption of LLM observability via Langfuse and workflow automation via n8n across AI teams; authored internal documentation, led technical presentations, and defined integration strategy.
  • Created Architecture Decision Records (ADRs) and shaped best practices for internal AI development, prompt management, and observability.
  • Provided cross-team AI consultancy, unblocking teams on architecture, tooling, observability, and AI delivery practices.

E.ON

Led backend and AI development for a production-grade chatbot assisting customers with invoices, billing, and support queries.

  • Led design and implementation of an LLM-based support chatbot used in production by thousands of users.
  • Owned backend reliability, prompt strategy, observability, and edge-case handling for a production customer-support AI system.
  • Collaborated with clients, PMs, and support teams to prioritize roadmap decisions and iterate based on production feedback.

04 // R&D Team

AI Engineer - ContactLoop

Taipei, Taiwan
July 2023 - Feb 2025

Founding Engineer working directly with the CEO and CTO. Built and launched two AI products from scratch:

  • ChatFusion - LLM-powered chatbot platform processing thousands of messages daily. Built the MVP, led deployment, and onboarded major clients, including one of the largest addiction treatment providers in the US.
  • VoiceFusion - Speech-to-speech voice AI platform integrating STT, TTS, and LLMs, scaled to thousands of calls per month. Built the PoC and MVP that became the foundation for production voice AI deployments used by US lending companies.
  • Built LLM agents with RAG, data extraction, call forwarding, function calling, and multi-step reasoning.
  • Increased chatbot lead generation by 28%, improved engagement by 15% through A/B testing, and reduced LLM error rates by 23% via LLMOps, prompt evaluation, and curated fine-tuning workflows.
  • Built internal tools for automation, data scraping, and prompt templating to accelerate development cycles.
  • Worked with clients, Sales, Product, and Engineering to ship quickly, deliver measurable results, and close feedback loops.

05 // Wen-Nung Lie's Research Team

AI Research Assistant - CCU

Chiayi, Taiwan
Aug 2022 - Jan 2023
  • Implemented deep reinforcement learning models (VAE + LSTM + A3C) for visual navigation in mobile robots.
  • Achieved up to 4x performance improvements through model and pipeline optimization.
  • Improved image encoding for VAE-based architectures by up to 1% in data reconstruction quality.

06 // Data Team

Data Engineer - ForeFlight

Odense, Denmark
Apr 2022 - July 2023
  • Built large-scale airport data scrapers with BeautifulSoup and Playwright for 300+ airports, automating ingestion into SQL pipelines.
  • Delivered internal APIs and dashboards powering aviation pricing insights and decision tools.

07 // Process Automation Team

Automation Engineer - Emerson

Cluj-Napoca, Romania
July 2020 - July 2021
  • Developed control system software for industrial automation using DeltaV.
  • Designed operator interfaces and ran SATs for international clients to validate safety-critical systems.

project_log

[Projects]

System Design / Scraping / Postgres | Jan 2026

Distributed Job Scraping System - 500k Listings

Built a distributed job scraping system that ingested 500k job listings with FastAPI, Python subprocess isolation, and a Postgres-as-queue architecture. Designed worker orchestration, heartbeat monitoring, duplicate elimination, live execution logs, and a web control plane for deploying and monitoring scraper nodes. Processed 500k+ listings with zero duplicate URLs and sub-50ms indexed queries, while keeping infrastructure cost at €0 by self-hosting Supabase/Postgres via Coolify.

3D Vision / Robotics / Medical AI | Odense, Denmark | Feb 2023 - June 2023

Improvements in Throat Swabbing Key-Points Detection

Master's thesis in collaboration with Lifeline Robotics and the University of Southern Denmark. Enhanced 3D point-cloud perception for oral cavity swabbing with a modified PointNet pipeline. Researched AI advancements from 2D key-point regression to 3D point clouds, cut model parameters by 22.5 million, and boosted accuracy by 20% compared to the legacy system.

Reinforcement Learning / Robotics | Chiayi, Taiwan | Aug 2022 - Jan 2023

AI Visual Navigation Mobile Robot

Research project in collaboration with Wen-Nung Lie's lab at National Chung Cheng University. Improved A3C-based deep reinforcement learning for visual robot navigation by integrating spatial and channel attention into VAE image encoding and adding LSTM memory cells for better pathfinding.