Tobias Arceneaux
Machine learning engineer, ranking, PyTorch, Spark and Kubernetes
Seattle, WAtobias.arceneaux@example.com(555) 461-0837tobiasarceneaux.example.com
Summary
Machine learning engineer with an MS in Computer Science and two years on playlist ranking at a music streaming service with 3.2M listeners. Built the feature pipeline, the serving endpoint and the offline evaluation for a model that raised playlist saves 6.4% in an A/B test.
Experience
Machine learning engineer I, personalization
Aug 2024 – Present
Duwamish Audio · Seattle, WA
- Built the Spark feature pipeline for a playlist ranking model, refreshing 40M listener features daily in 45 minutes.
- Delivered the model behind a FastAPI endpoint on Kubernetes at 1,800 requests a second, with p99 latency under 60 ms.
- Increased playlist saves 6.4% in a 3-week A/B test against the rules-based ranker, then shipped it to every listener.
- Created offline evaluation for 3 ranking models with NDCG and catalog coverage, cutting each review from 2 days to 3 hours.
Machine learning intern, then part-time engineer
Jun 2023 – May 2024
Salish Sea Marketplace · Seattle, WA
- Trained a PyTorch product-image classifier on 220,000 photos, reaching 91% top-1 accuracy against 84% for the old model.
Education
Master of Science in Computer Science
Sep 2022 – Jun 2024
Puget Lowlands University · Seattle, WA
Bachelor of Science in Mathematics
Sep 2018 – Jun 2022
Puget Lowlands University · Seattle, WA
Skills
- Languages
- Python, SQL
- Modeling
- PyTorch, Learning to rank, Feature engineering, A/B Testing
- Systems
- Spark, FastAPI, Kubernetes, Docker, Model serving, Git





