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Joseph NJN
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Joseph N

@josephn

I build high-concurrency backend, AI moderation, and cloud-native systems at global scale.

United States
Message

At Roblox, I build real-time AI-powered content moderation pipelines for chat and voice at multi-billion-event scale, including Kubernetes microservices, GPU-accelerated inference, and the LLM-powered Roblox Assistant. My work improved moderation accuracy by 15%, reduced prototyping time by 40%, and cut voice moderation response time by 20%.

Previously at Exabeam and PlayStation, I developed fault-tolerant backend services, streaming data pipelines, APIs, and cloud infrastructure supporting enterprise security and PlayStation Network workloads. I work across Go, Java, Python, Kubernetes, Kafka, AWS, and AI/ML systems, with a focus on low latency, high availability, performance, and user safety.

Experience

Work history, roles, and key accomplishments

Roblox logoRO
Current

Senior Software Engineer

Apr 2025 - Present (1 year 4 months)

Led end-to-end development of real-time AI-powered content moderation pipelines, deploying transformer-based NLP models for detecting policy violations in chat and voice at multi-billion event scale. Architected and launched a fault-tolerant microservices infrastructure on Kubernetes with GPU-accelerated inference using Triton and TorchServe, ensuring sub-100ms latency and 94% uptime during global

Education

Degrees, certifications, and relevant coursework

University of California, Santa Cruz logoUC

University of California, Santa Cruz

Bachelor's Degree, Computer Science

2015 - 2019

Pursued a Bachelor's Degree in Computer Science, gaining a strong foundation in software engineering principles and practices.

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