CV / Work History

Freelance

Geospatial Data Engineer · ML Engineer · AI Engineer

May 2026 – Present

Geospatial data engineering and analysis-ready cloud-optimised dataset pipelines
Production ML system design and deployment
LLM / AI engineering and agentic systems

New Work SE (XING)

Data Scientist — AI Engineer

Mar 2025 – Mar 2026

Developed end-to-end LLM-powered recruiting agent from concept to production with RAG retrieval, reranking, prompting, tracing and guardrails
Reduced recruiter review load by narrowing 20M profiles to 200 prescreened, then 10 interested applicants per posting via personalised outreach

New Work SE (XING Marketing Solutions)

ML Engineer

Apr 2023 – Mar 2025

Replaced logistic regression baseline with deep neural network for ad targeting, achieving 10–15% CTR improvement
Shipped LLM ad copy generation pipeline integrated into the production ad stack
Built user-level personalisation features with custom embeddings

Max-Planck-Institut für Meteorologie

PostDoc Researcher

Jan 2021 – Mar 2023

Analysed COVID-19 lockdown effects on atmospheric CO₂ using observational and model data

Max-Planck-Institut für Meteorologie

PhD Researcher

Jan 2018 – Dec 2020

Developed decadal climate prediction system processing 40TB+ ensemble datasets
Created climpred, an open-source Python library for probabilistic forecast verification
Published 3 first-author peer-reviewed papers in high-impact climate journals

Download CV (PDF)

© Copyright 2026 by Aaron Spring.