Vesa Siivola
Vesa Siivola
Curriculum Vitae
Curriculum Vitae
Roblox, San Mateo, since Mar 2024
Senior Machine Learning Engineer
Working on Roblox voice toxicity detector - preparing data, training / fine-tuning and evaluating the e2e model.
Speechly, Helsinki, Feb 2023 - Mar 2024
Senior Speech Scientist (Feb 2023 - Sep 2023)
Senior Machine Learning Engineer (Sep 2023 - Mar 2024)
Working on language modeling for Speechly's speech recognizer and toxicity analyzer. Roblox acquired Speechly in Sep 2023.
Rovio, Espoo, Dec 2016 - Jan 2023
Lead Machine Learning Engineer (Sep 2021 - Jan 2023)
Lead Data Engineer (Jun 2020 - Sep 2021)
Senior Analytics Developer (Dec 2016 -Jun 2020)
Building and maintaining analytics pipeline from raw events to basic KPIs and player profiles including simple ML models like churn and spender prediction. Tech lead for an analysis pipeline for Apple SKAdNetwork revenue measurement. Most of the pipelines were built with PySpark, occasionally with a bit of Flink and Pandas. The underlying cloud infrastructure was built on Amazon Web Services.
Lingsoft, Helsinki, Oct 2012 - Nov 2016
Development Manager
Managing the development of Lingsoft’s speech recognition and machine translation technology. The speech recognition domains include closed captioning for TV, transcription of medical dictations and IVR/telephony applications.
Rosetta Stone, Boulder, Colorado, Feb 2009 - Sep 2012
Researcher
Worked on improving utterance verification and assessment for language learners. Also, created a system for identifying language in text chat messages and a simple concatenative speech synthesizer.
Lingsoft, Helsinki, Jan 2008 - Jan 2009
Built a speech recognition server platform for automatic transcription of dictations on top of the AaltoASR speech recognition engine. This was a secondary occupation until Aug 2008.
Academy of Finland, Helsinki, May 2007 - Aug 2008
Science Adviser
Assisted handling funding applications for basic research. Helped to organize an assessment of the state of research in mechanical engineering in Finland and also a similar assessment of computer science.
Helsinki University of Technology, Espoo, 1998 – May 2007
Researcher 2000 - May 2007
Research Assistant 1998 - May 2000
Worked in a team that created a large vocabulary continuous speech recognition system for Finnish, specialized in morph-based variable order n-gram language modeling. Helsinki University of Technology is nowadays part of Aalto University.
<first_name>.s.<last_name>@gmail.com
https://scholar.google.com/citations?hl=en&user=1TCiH2cAAAAJ
2007: Doctor of Technology
Helsinki University of Technology, Espoo
Title of the dissertation: “Language models for automatic speech recognition: construction and complexity control”
1999: Master of Science
Helsinki University of Technology, Espoo.
Major: Information Technology.
Minor: Signal Processing and Acoustics
My native language is Finnish. I speak and write English fluently. I read Swedish and French.