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Software Engineer, GenAI Platform

Roblox - San Mateo, CA, United States - Hybrid - posted 2026-09-25

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Salary: USD 153,120 - 196,750 / annual

Roblox is seeking a Software Engineer to join the Foundation AI team, which builds the platforms, services, and infrastructure enabling machine learning and generative AI across the Roblox platform. The role involves working across model training and inference, LLM services, agent infrastructure, data systems, experimentation, evaluation, and developer tooling. You will design, code, test, launch, and operate production features that power ML and GenAI experiences across Roblox. This includes building platforms and services for machine learning and agentic systems, exploring emerging technologies such as ML frameworks, LLMs, distributed systems, and GPU infrastructure, and improving the speed, reliability, observability, and cost efficiency of AI development. You'll contribute to systems operating at Roblox scale while balancing quality, latency, reliability, and responsible data use. You will partner with teams across product, research, data, infrastructure, safety, creator, engine, discovery, and economy, and report to an Engineering Manager within the Foundation AI organization. Roblox operates a hybrid model with onsite presence Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday. REQUIREMENTS: - Undergraduate or graduate degree in computer science or equivalent experience in engineering or a related technical field - 1–3 years of experience in software engineering, distributed systems, cloud services, or a related area - Experience building projects through coursework, internships, research, or personal work - Working knowledge of one or more programming languages such as Go, Python, or Rust, with interest in learning new technologies - Interest in machine learning, generative AI, distributed systems, data infrastructure, or developer platforms - Strong communication skills and willingness to collaborate across teams and disciplines

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