Chaiwat Nattapong Phromsiri

Data Scientist, Keystone Security - embeddings · ranking · Spark

Keystone Security

Bangkok, Thailand · ICT (UTC+7)

4+ years experience

Nanyang Technological University

English, Thai

Messaging unavailable

Overview

Currently at Keystone Security, where I work on recommendation systems. Shipped a ranking change that increased conversion 5.1%. Built the recommendations models now used in 6 product decisions a quarter. Most at home with embeddings and recommender systems. I volunteer with a food bank on weekends.

Good reasons to reach out

Thoughtful intros to people in my field
Working sessions on recommender systems
Second opinions on Spark decisions

Please don't message about

Survey or panel invitations
Unpaid work or spec projects
SEO and link-building offers

Skills

recommender systemsSparkrankingembeddings

Experience

Data Scientist
May 2022 - Present
Keystone Security · 4 yr 5 mo · Full-time · Bangkok, Thailand
- Shipped a ranking change that increased conversion 5.8%.
- Wrote the metric definitions the leadership team reviews every week.
- Replaced 25 hand-built dashboards with one metrics layer people trust.

Projects

Conference talk: lessons from recommendations

2023

What went wrong and what worked while scaling recommendation systems.

Open-source embeddings toolkit

2023

A small library for recommendation systems that 597 developers star on GitHub.

References

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Education

Nanyang Technological University
BEng, Operations Research
2016 - 2020

Details

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