River AICofounder
Jan 2026 — Present
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Dmytro Soboliev builds River AI, a platform for training, optimizing, and serving AI models and agents. He is a competitive-programming Grandmaster with a 2,797 peak Codeforces rating. Previously worked in engineering roles at xAI, OpenAI, Apple, Laserlike, Jump Trading, Joom, SingleStore, Google, and Meta.
Dmytro Soboliev builds River AI, a platform for training, optimizing, and serving AI models and agents. He is a competitive-programming Grandmaster with a 2,797 peak Codeforces rating. Previously worked in engineering roles at xAI, OpenAI, Apple, Laserlike, Jump Trading, Joom, SingleStore, Google, and Meta.
Career
xAIMember of Technical Staff
Jul 2025 — Dec 2025
OpenAIMember of Technical Staff
Nov 2024 — Jun 2025
ApplePrincipal Software Engineer / Engineering Manager
Nov 2018 — Nov 2024
LaserlikeSoftware Engineer
Feb 2017 — Nov 2018
Jump TradingSoftware Engineer
Jul 2016 — Jan 2017
JoomSoftware Engineer
Jul 2014 — Jul 2016
SingleStoreSoftware Engineer Intern
Mar 2014 — Jul 2014
GoogleSite Reliability Engineer Intern
Feb 2013 — May 2013
MetaSoftware Engineering Intern
Jul 2012 — Sep 2012