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Senior Software Engineer, Engine Harmony
Senior engineer on Roblox's Game Engine Systems team writing C++ engine code that harmonizes CPU, memory, and bandwidth resource usage so gameplay runs well across devices — from mobile clients to cloud servers — with optimization work to improve player engagement.
[2027] Senior Machine Learning Engineer - PhD Early Career
Roblox is hiring a PhD-level senior machine learning engineer to take research projects end-to-end — from ideation through production deployment of deep learning, generative AI, multimodal, CV, NLP, and recommendation models that power the platform for hundreds of millions of daily users.
[2027] Data Scientist - PhD Intern
A PhD-level data science intern at Roblox's San Mateo HQ, conducting causal inference, experiment design, and machine learning research that powers product teams spanning AI evaluation, safety, economy, engine, social, growth, and ads. Core tools include SQL, Python/R, and big-data technologies like Hive, Spark, and Airflow.
Principal Data Scientist - Safety
Principal-level data scientist on Roblox's Content Safety team, building prevalence measurement methodologies, ground truth datasets, and causal-inference analyses to quantify and reduce harmful user-generated content across games, avatars, and in-game behaviors. Core stack includes Python/R, SQL, Hive, Spark, and Airflow, partnering with Product, Engineering, Policy, and Legal.
Senior Network Engineer - Data Center Networking
Senior network engineer who designs, deploys, and operates Roblox's large-scale data center network in San Mateo, building high-performance CLOS fabrics, 400G/800G hardware, and GPU clusters for AI training. Core technologies include BGP, TCP/IP, IPv4/IPv6, plus automation and telemetry.
Principal Machine Learning Engineer - Matchmaking
Principal ML engineer owning the technical vision for Roblox's matchmaking: defining objective functions and building ranking, prediction, and player-to-server assignment algorithms that optimize player experience, developer success, and system efficiency at massive scale. Onsite in San Mateo Tue–Thu; base pay $295,250–$345,040 plus equity.
Software Engineer, Frontend - Economy
Frontend software engineer on Roblox's Economy team, building polished web and mobile shopping, creator-earning, and personalization experiences for the world's largest virtual economy. Daily work uses JavaScript/TypeScript and React, with close collaboration alongside product, design, data science, ML, and backend teams.
Software Engineer, Notifications
Builds and operates Roblox's notification systems, routing push, in-app, email, and toast notifications to millions of users; ships ranking/recommendation features, runs A/B experiments, and maintains developer-facing APIs. Needs 1–3 years of backend/distributed systems experience; onsite in San Mateo, CA Tue–Thu.
Regional Sales Director France
At Classiq Technologies, we’re shaping the future of quantum computing. Our mission is to make quantum computing practical and impactful by bridging the gap between hardware and real-world applications. Our platform…
Senior Software Engineer (Machine Learning) - Economy ML
Builds and operates the ML infrastructure and backend services behind Roblox's virtual economy — training, serving, and integrating ranking, recommendation, and pricing models across Marketplace, Payments, and Developer Monetization. Core stack: Python, PyTorch, GPU training/serving, and Spark/Flink/Kafka pipelines. Onsite Tue–Thu in San Mateo, CA.
Senior Machine Learning Infrastructure Engineer, Matchmaking
Builds and operates large-scale ML infrastructure powering Roblox's matchmaking: real-time streaming data pipelines, online/continual learning, and low-latency training and serving at tens of billions of scorings. Core stack includes Kafka, Flink, Spark, Ray, and feature stores like Redis, Feast, Tecton, and Cassandra. Based in San Mateo, CA (onsite Tue-Thu).
Software Engineer, Reliability
Early-career software engineer on Roblox's Reliability team, building infrastructure that keeps the platform fast, reliable, and efficient: applying AI/ML to scale workloads across regions, tuning performance with metrics and profiling, and sharing on-call. Core tech: Python/Rust/Go/Java/C#, distributed systems, Kubernetes, Prometheus/Grafana.
Senior Software Engineer, Realtime Analytics Platform
Senior engineer on Roblox's Real-time Analytics Platform team, owning and scaling StarRocks and Apache Druid OLAP clusters that power sub-second analytical queries over petabytes of daily data. Builds Kafka/Flink streaming ingestion, tunes MPP query-engine performance, and runs clusters on Kubernetes/Terraform; onsite in San Mateo.
Principal Software Engineer, GenAI Platform
Principal engineer on Roblox's Foundation AI team, setting multi-year technical strategy and architecture for the platforms powering machine learning, generative AI, and agentic experiences across Roblox — spanning LLM inference, agent infrastructure, data systems, and developer tooling. Expert-level Go, Python, or Rust plus large-scale distributed systems experience.
Principal Software Engineer
Principal engineer on Roblox's Observability team, owning telemetry, distributed tracing, and logging infrastructure end-to-end — instrumentation libraries, pipelines, storage, and visualization UI — while architecting the next-gen platform ingesting petabytes of data daily and building novel monitoring for AI/ML systems. Hybrid role: 3 days/week at San Mateo HQ.
Machine Learning Engineer - Agentic AI
ML engineer on DiDi's autonomous driving team (Voyager) building agentic AI systems: agents that propose and verify changes to driving policy code, data, and training recipes via recursive self-improvement loops. Work spans LLM agent harnesses, fine-tuning LLMs on agent trajectories, and skill libraries, using real-world driving data and Python/C++.
Senior Software Engineer, Content Understanding
Senior full-stack engineer on Roblox's Content Understanding Platform, building scalable backend systems and ML pipelines that process billions of assets (3D models, audio, text, video) to power search, discovery, moderation, and generative AI features. Stack spans Python/C#/C++/Java, cloud backends, PyTorch/TensorFlow, and some React/Angular.
Software Engineering Manager, Data
Leads Kard's 12-person multidisciplinary data team (data engineering, analytics engineering, data science, ML engineering, data support), setting technical direction for the data platform. A technical management role spanning pipelines, analytics, and production ML supporting Kard's card-linked commerce media product.
AI Research Engineer: Vision AI / VLM / Physical AI-1
Centific (posted via OneForma) is hiring an AI Research Engineer to turn cutting-edge computer vision, vision-language model (VLM), and embodied/physical AI research into production modules — building and fine-tuning 2D/3D perception models, running VLM training/evaluation, and prototyping robotics pipelines in sim (NVIDIA Isaac/Omniverse). Core stack: PyTorch/Python, CUDA, Kubernetes/Docker/Ray/F