Rionel Dmello

Rionel Dmello

Senior Machine Learning Engineer at Meta | Ex-Amazon

Role
Senior Software Engineer, Machine Learning at Meta
Location
New York, NY, US
LinkedIn followers
500 followers

About Rionel Dmello

ML engineer at Instagram with a focus on search, ranking, and recommendation systems. Previously at AWS building large-scale ML infrastructure. I work across the stack — fine-tuning LLMs, designing retrieval and ranking pipelines, building MLOps systems, and leading engineering teams to ship products that move business metrics. Most at home at the intersection of applied ML and backend systems. Python, Java, Go, PyTorch, Spark, LangChain, and deep experience with AWS infrastructure.

Experience

  1. Senior Software Engineer, Machine Learning

    Meta

    Feb 2026 — Present · NY, US

Education

  • St. Xavier's College

    High School Diploma, HSC Science

  • Don Bosco High School (Borivli)

    SSC

  • UC Irvine

    Bachelor of Science, Computer Science

    2017 — 2021

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