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fable12 indexes public job boards directly from employers’ hiring systems. Listings link to the employer. Ages are the employer’s own publish date — how we know.

Not affiliated with any company listed. Boards last swept 22 Aug, 19:59 UTC.

RSS · Open longest · Engineering notes · For assistants

Under a week4 1–4 weeks4 1–2 months5 2–12 months20 Over a year0

1,841 postings mention “Principal Machine Learning Engineer” in the description

29 roles across 33 listings · show every listing · page 1 of 2

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17d
Principal Machine Learning Engineer
OracleNashville, TN+3 more listingsoldest open 3 months
Apply Principal Machine Learning Engineer at Oracle — opens Oracle’s own board
2d
Principal Machine Learning Engineer (Platform & Integrations)- League of Legends
Riot GamesRiot Game StudiosLos Angeles, USA
Apply Principal Machine Learning Engineer (Platform & Integrations)- League of Legends at Riot Games — opens Riot Games’s own board
4d
Principal Machine Learning Engineer, Geometric Vision
WayveAV EngineeringSunnyvale
Apply Principal Machine Learning Engineer, Geometric Vision at Wayve — opens Wayve’s own board
33d
Principal Machine Learning Engineer, Content Safety
RobloxEngineeringSan Mateo, CA, United States
Apply Principal Machine Learning Engineer, Content Safety at Roblox — opens Roblox’s own board
42d
Principal Machine Learning Engineer, Matching and Recommendations (UK Based)
BumbleEngineeringUK LondonHybrid
Apply Principal Machine Learning Engineer, Matching and Recommendations (UK Based) at Bumble — opens Bumble’s own board
52d
Principal Machine Learning Engineer (Reconstruction / Quantitative Imaging)
MidjourneyMidjourney MedicalSan Francisco; San Francisco Bay Area Hybrid
Apply Principal Machine Learning Engineer (Reconstruction / Quantitative Imaging) at Midjourney — opens Midjourney’s own board
2mo
Principal Machine Learning Engineer - AV Labs
UberSunnyvale, CA; San Francisco, CAhalf of Uber’s roles are under 24 days
Apply Principal Machine Learning Engineer - AV Labs at Uber — opens Uber’s own board
3mo
Principal Machine Learning Engineer- LLM Fine-tuning and Optimization
AirbnbEngineering & TechnologyUnited Stateshalf of Airbnb’s roles are under 43 daysRemote
Apply Principal Machine Learning Engineer- LLM Fine-tuning and Optimization at Airbnb — opens Airbnb’s own board
3mo
Principal Machine Learning Engineer, Accelerated Apache Spark
NVIDIAEngineer, Sys SWSanta Clara, CA
Apply Principal Machine Learning Engineer, Accelerated Apache Spark at NVIDIA — opens NVIDIA’s own board
4mo
Principal Machine Learning Engineer, Answers, Search & Knowledge Platforms
AppleMachine Learning and AISanta Clara+1 more listing
Apply Principal Machine Learning Engineer, Answers, Search & Knowledge Platforms at Apple — opens Apple’s own board
5mo
Principal Machine Learning Engineer, Matching and Recommendations
BumbleEngineeringUS TX Austinhalf of Bumble’s roles are under 59 daysHybrid
Apply Principal Machine Learning Engineer, Matching and Recommendations at Bumble — opens Bumble’s own board
5mo
Principal Machine Learning Engineer, Ads & Promos Delivery
DoorDashEngineeringSunnyvale, CAhalf of DoorDash’s roles are under 2 months
Apply Principal Machine Learning Engineer, Ads & Promos Delivery at DoorDash — opens DoorDash’s own board
5mo
Principal Machine Learning Engineer, AI & Data Platforms (AiDP)
AppleCorporate FunctionsLondon
Apply Principal Machine Learning Engineer, AI & Data Platforms (AiDP) at Apple — opens Apple’s own board
6mo
Principal Machine Learning Engineer, Embodied AI and Smart NPCs
RobloxEngineeringSan Mateo, CA, United Stateshalf of Roblox’s roles are under 59 days
Apply Principal Machine Learning Engineer, Embodied AI and Smart NPCs at Roblox — opens Roblox’s own board
6mo
Principal Machine Learning Engineer (Personalization, Matchmaking, & Player Experience AI) - Publishing Platform
Riot GamesRiot PubSportsLos Angeles, USA; Mercer Island, USAhalf of Riot Games’s roles are under 2 months
Apply Principal Machine Learning Engineer (Personalization, Matchmaking, & Player Experience AI) - Publishing Platform at Riot Games — opens Riot Games’s own board
11mo
Principal Machine Learning Engineer, Ads Delivery
PinterestEngineeringSan Francisco, CA, US; Palo Alto, CA, US; Seattle, WA, UShalf of Pinterest’s roles are under 37 days
Apply Principal Machine Learning Engineer, Ads Delivery at Pinterest — opens Pinterest’s own board
2d
Sr to Principal Machine Learning Engineer, Framework & Performance
QualcommMachine Learning EngineeringMarkham, ON
Apply Sr to Principal Machine Learning Engineer, Framework & Performance at Qualcomm — opens Qualcomm’s own board
6d
Senior Principal Machine Learning Engineer
SambaNovaSoftwareSan Jose, California, United States
Apply Senior Principal Machine Learning Engineer at SambaNova — opens SambaNova’s own board
10mo
Senior Staff / Principal Machine Learning Engineer - Autonomy Behaviors
ZooxSoftwareFoster City, CAhalf of Zoox’s roles are under 2 monthsHybrid
Apply Senior Staff / Principal Machine Learning Engineer - Autonomy Behaviors at Zoox — opens Zoox’s own board
14d
Senior Principal Software Engineer, Machine Learning
ToastR & D : Foundations : AIRemote, USRemote
Apply Senior Principal Software Engineer, Machine Learning at Toast — opens Toast’s own board
19d
Principal Software Engineer - Artificial Intelligence and Machine Learning
JPMorganChaseSoftware EngineeringColumbus, OH
Apply Principal Software Engineer - Artificial Intelligence and Machine Learning at JPMorganChase — opens JPMorganChase’s own board
4mo
Principal / Distinguished Engineer, Machine Learning
NetskopeEngineeringSanta Clara, California, United Stateshalf of Netskope’s roles are under 44 days
Apply Principal / Distinguished Engineer, Machine Learning at Netskope — opens Netskope’s own board
10mo
Principal Machine Learning Infrastructure Engineer, Ads & Discovery
RobloxEngineeringSan Mateo, CA, United Stateshalf of Roblox’s roles are under 59 days
Apply Principal Machine Learning Infrastructure Engineer, Ads & Discovery at Roblox — opens Roblox’s own board
39d
Senior Staff / Principal Machine Learning Scientist, AI Inference & Optimization
NetskopeEngineeringSanta Clara, California, United States
Apply Senior Staff / Principal Machine Learning Scientist, AI Inference & Optimization at Netskope — opens Netskope’s own board
2mo
Principal Applied Research Engineer/Scientist, Siri Labs
AppleMachine Learning and AICupertino
Apply Principal Applied Research Engineer/Scientist, Siri Labs at Apple — opens Apple’s own board