Technical Founder & AI Engineering Lead
I build AI systems that work in production — specializing in LLM systems, agentic workflows, and the training & evaluation data that makes them perform. PhD in NLP. 9 years of applied experience. Founder of Calibrion AI.
What I Do
End-to-end data pipeline design for LLM training and evaluation — HITL workflows, quality frameworks, consensus-based QC, and LLM-jury evaluation.
Production LLM systems including fine-tuning (SFT, DPO, RLHF), evaluation, benchmarking, and LLMOps across leading model providers.
Design and deployment of agentic workflows and multi-agent systems using OpenAI Agents SDK, Claude Agents SDK, Pydantic AI, and MCP.
Deep expertise in NLP — from transformers, RAG, and semantic search to sequence modeling and production ML pipelines.
Translating complex business needs into scalable AI implementations. C-suite advisory on AI strategy, data governance, and product development.
Player-coach engineering leadership — building and leading cross-functional teams, defining technical roadmaps, and driving execution in fast-moving environments.
Selected Work
Founded and led the development of a production-grade annotation platform combining HITL workflows, annotation agents, consensus-based QC, and LLM-jury evaluation — deployed across enterprises in Europe.
Designed and delivered scalable AI solutions for one of the world's leading data and AI platforms, spanning NLP, LLMs, and agentic systems.
Advised the private foundation of Starbucks CEO Howard Schultz on AI adoption, delivering production AI implementations aligned with their mission.
Led ML and NLP infrastructure development as hands-on team lead, delivering a key product feature that exceeded accuracy targets by 5 percentage points.
Designed and led NLP solutions for Volkswagen and Roche, including an automated business-secret redactor and a market trend detection system.
Background
2024 – Present
Founder & CEO
Calibrion AI · Berlin
Building a data annotation platform for foundation model training and evaluation data.
2021 – Present
Senior ML/NLP Consultant
Freelance · Remote
AI solution architecture and implementation for global enterprises and mission-driven organizations.
2021 – 2022
ML Lead
Archipelo · San Francisco (Remote)
Hands-on ML team lead, NLP infrastructure, and feature development.
2020 – 2021
NLP Lead
Merantix Labs · Berlin
NLP roadmap, enterprise AI solutions for Volkswagen and Roche.
2018 – 2020
Senior Data Scientist
Omnius · Berlin
2012 – 2017
PhD in Computer Science
University of Geneva · Switzerland
Specialization in NLP, awarded with highest distinction. Visiting researcher at Stanford University (CSLI) and Uppsala University.
Academic Work
My academic research focused on natural language processing, linguistic annotation, and distributional semantics. My work has accumulated 191 citations and includes papers co-authored with Prof. Joakim Nivre (one of the most cited NLP researchers globally) and collaborators at Google. My most cited work involved building annotated datasets for complex NLP phenomena — an early foundation for the data-centric AI work I continue today.
Let's Work Together
Calibrion AI provides an end-to-end data annotation platform with HITL workflows, annotation agents, and multi-layer quality control — built for foundation model development.
Visit Calibrion AII take on select consulting engagements in LLM systems, agentic architectures, AI strategy, and data pipeline design. Get in touch to discuss your project.
Get in TouchContact
I'm based in Berlin and open to remote consulting engagements globally. Feel free to reach out about projects, collaborations, or just to talk AI.