Javier Sánchez
Machine Learning Engineer at Apple
Greater Barcelona Metropolitan Area Spain
Summary
👤
Senior🎓
Top SchoolJavier Sánchez is a Machine Learning Engineer with nine years of experience bridging academic research and production speech-translation systems, currently on Apple's ML team after shaping AppTek’s Speech Translation product line. He holds a PhD (cum laude) from Universitat Politècnica de València and spent much of his career advancing streaming speech translation—turning research prototypes into deployed models across more than ten language pairs. Javier has published at top ASR/MT venues, won the WMT19 Spanish↔Portuguese task, and built data-filtering and LLM-augmentation techniques that cut training time and reduced translation length mismatches in production. Comfortable across research and engineering, he also fine-tuned LLMs for niche tasks like foreign named entity detection and dialect identification, achieving high F1 scores, and supervised award-winning student projects. Based in the Barcelona area, he combines rigorous academic training with hands-on productization experience in real-time speech systems.
9 years of coding experience
7 years of employment as a software developer
Universitat Politècnica de València
Spanish, English, Catalan
Github Skills (45)
pytorch10
artificial-intelligence10
python10
attention-model10
sequence-to-sequence10
seq2seq9
encoder-decoder9
attention-mechanism9
ai9
transformer-architecture9
translation8
neural-machine-translation8
machine-translation7
speech6
audio6
Programming languages (2)
Github contributions (5)
jairsan/Stream-level_Latency_Evaluation_for_Simultaneous_Machine_Translation
Sep 2021 - Nov 2023
Contributions:16 pushes, 7 branches, 1 tag in 2 years 2 months
jairsan/Speech_Translation_Segmenter
Nov 2020 - Mar 2023
Contributions:2 pushes, 1 branch in 2 years 3 months
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