# Jose Sabater : Curriculum Vitae

> AI Engineer at Opper. Based in Stockholm, by way of Madrid and Tenerife.

Canonical: https://jose.sabater.io/cv

I build the infrastructure that makes LLM applications actually work in production: agents, evals, SDKs, and the glue around them. Free-time projects live on GitHub and jose.sabater.io.

- Location: Stockholm
- Email: jose@sabater.io
- GitHub: https://github.com/Jose-Sabater
- LinkedIn: https://www.linkedin.com/in/jose-sabater

## Experience

### AI Engineer, Opper AI

May 2025 → Present · Stockholm

- Develop and maintain the Opper API, powering scalable LLM workflows.
- Built Agent SDKs in Python and TypeScript for production LLM applications.
- Developed the AI Roundtable: multi-model deliberation as a product.
- Designed Taskbench, a real-world LLM benchmarking framework: curated evaluation datasets, a model-agnostic engine (plug-and-play via model string), and a library of evaluator types.
- Built Observer, a context-engineering agent that provides personalised observability across LLM interactions: auto-detects task intent, selects scorers, and improves calls via automated and user-driven in-context learning.
- Deployed autonomous agents in production environments.

### Data Scientist, SAS Scandinavian Airlines

Apr 2024 → May 2025 · Stockholm

- Led the technical development of a major pricing-optimisation programme.
- Designed ETL pipelines processing 50M+ rows and 100+ features.
- Trained price-sensitivity models with XGBoost, CatBoost, and LightGBM.
- Used clustering to identify behavioural segments for pricing strategy.
- Designed and ran A/B tests and price experiments, including custom monitoring tools and a price-simulation framework for scenario evaluation.
- Worked closely with pricing and commercial teams to turn insights into action.

### Data Scientist, Connected Services, Scania Group

Jul 2023 → Apr 2024 · Sweden

- MLOps for scalable ML products on GitLab CI/CD and cloud services.
- Data products on Snowflake + AWS following data-mesh principles, served to hundreds of customers.
- Generative AI for customer success: solutions on AWS Bedrock and SageMaker, with LangChain and vector databases.

### Data Scientist, Smart Factory Lab, Scania Group

Feb 2022 → Jul 2023 · Södertälje

- End-to-end data projects: from business understanding to model deployment. Solution prototyping, experiment design, demo building, and shipping.
- Machine learning for prediction; time-series analysis and forecasting; computer vision (TensorFlow, PyTorch) for object detection, classification, and OCR.

### Innovation Engineer, Smart Factory Operations, Scania Group

Jan 2020 → Sep 2022 · Södertälje

- Led the digital transformation of production and logistics globally.
- Coordinated Smart Factory activities within Scania and the wider Volkswagen group: data science, computer vision, advanced analytics, IoT.

### Project Leader, Transmission Machining, Scania Group

Jun 2018 → Jan 2020 · Södertälje

- Engineering project management for investment in new machines at Transmission Manufacturing: design, layout, energy consumption, mechanical and electrical components.
- Made sure the production lines delivered on time.

### Business Process Delivery Associate, Accenture España

Feb 2016 → Jul 2016 · Madrid

- Planning and production control for the MRTT programme at Airbus Defence and Space.

## Education

- **MSc, Industrial Engineering & Management**, Linköping University (2016 → 2018)
- **BSc, Aerospace, Aeronautical and Astronautical Engineering**, Universidad Politécnica de Madrid (2010 → 2015)
- **High school**, Deutsche Schule Teneriffa (2003 → 2010)

## Languages

- Spanish : Native
- Swedish : Full professional
- English : Professional
- German
- French

## Stack

- Python, TypeScript
- OpenAI, Anthropic, Gemini
- AWS, Snowflake
- PyTorch, TensorFlow
- XGBoost, LightGBM, CatBoost

## Certifications

- AWS Certified Machine Learning, Specialty (AWS)
- Generative AI with Large Language Models (DeepLearning.AI)
- Structuring Machine Learning Projects (DeepLearning.AI)
- Convolutional Neural Networks (DeepLearning.AI)
- TOEFL iBT (ETS)
- Sustainergies Finals (2017)


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## Elsewhere on this site

- [Jose Sabater](https://jose.sabater.io/) : Home. AI Engineer at Opper in Stockholm: what he works on now, forthcoming writing, and how to reach him.
- [Who am I](https://jose.sabater.io/whoami) : A personal letter: Venezuela, Florida, Tenerife, Madrid, Sweden, and the sea that keeps pulling him back.
- [Writing](https://jose.sabater.io/writing) : Notes, postmortems and the occasional misfire, including five posts archived from jmsabater.com (2023 to 2024) on neural networks and AI apps.
- [Gallery](https://jose.sabater.io/gallery) : Projects hung as paintings on a wall, each with a plaque and a link to the source.
- [Plain text](https://jose.sabater.io/text) : The whole homepage as one page of words, no motion, no images.

Machine index: https://jose.sabater.io/llms.txt
Sitemap: https://jose.sabater.io/sitemap.xml