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Principal Machine Learning Engineer, Alt Defense
Technical lead for Roblox's Alt Defense pod, architecting large-scale ML systems (graph neural networks, clustering) that detect banned bad actors returning with alternate accounts across billions of accounts, in near real time. Onsite in San Mateo, working with Python-scale ML, big data, and low-latency serving.
Senior Software Engineer, Automation Tools
Senior engineer on Roblox's App Test team building the test automation platform behind the Roblox Universal App — frameworks, runners, orchestration services, device-farm infra, and dashboards for end-to-end testing across mobile, desktop, console, and VR, with a push toward AI-native test authoring, selection, and failure triage. Core tech: C++, Python, or Go, plus CI/CD and AI/LLM tooling.
Principal Client Platform Engineer
Roblox is hiring a Principal Client Platform Engineer to act as the technical architect for its global fleet of macOS, Windows, Linux, Android, iOS, and ChromeOS endpoints. Day to day they define fleet security/management strategy, automate patching, OS upgrades and certificate lifecycles, harden endpoint security with tools like CrowdStrike and Kolide, and mentor engineers.
Principal Endpoint Platform Engineer
Serves as the technical architect for Roblox's global corporate endpoint fleet (macOS, Windows, Linux, iOS, Android, ChromeOS), defining strategy for scaling, security, and automation — patching, OS upgrades, certificate lifecycles, and observability tools like CrowdStrike and Kolide. Core tech: endpoint management platforms (Jamf Pro, Intune), Python/Bash/Go/Ruby, IaC/GitOps, Okta Zero Trust, and
Software Engineer, Account Security
Software engineer on Roblox's Account Security team builds features to prevent, detect, and mitigate account takeovers, owning work end to end across the stack in Go, Python, TypeScript, and Lua while using A/B tests and metrics to guide decisions. Based onsite in San Mateo within the Safety organization.
Test Engineer 3 - (HPC, Linux, Python)
Plans, executes, and automates test & evaluation (T&E) of software, middleware, and infrastructure running in High-Performance Computing environments for a government program, including performance analysis, test planning, and reporting. Core stack: Linux administration, Bash/Python automation, GitLab CI/CD, Docker/Podman; TS/SCI with polygraph required.
Software Integration Engineer 4 - (Kubernetes, Docker, Ansible)
Integration engineer maintaining the Kubernetes-based Platform-as-a-Service layer of a government compute environment at Fort Meade: cluster administration, container deployments (Docker, Helm, Flux), Ansible IaC, and Bash/Python automation. Requires TS/SCI clearance with polygraph.
Product Designer
Product Designer on Roblox's internal Roblox Operating System (ROS) team, designing unified internal productivity and analytics tools, including AI/LLM-powered agentic workflows. Day to day: end-to-end UX in Figma, partnering with PMs and engineers to turn dense data and complex workflows into elegant internal tools.
Principal Software Engineer- Agentic Customer Care
Principal engineer on Roblox's Trust & Safety 'Safety Experience' team, building agentic, LLM-powered applications and chatbot solutions for customer-facing and internal safety systems at scale. The role provides technical leadership and mentoring, working with C#/Java/Python, microservices, REST/RPC, and machine learning.
Senior Software Engineer - Data Acquisition
Senior engineer on Roblox's new Data Intake team, building a service that acquires external datasets, processes them into consistent formats, and stores them for training Roblox's future foundation models. Day-to-day work centers on AWS infrastructure (Terraform, EKS, VPC networking), Trino/Spark and SQL data systems, and Python data tooling, with tech-lead and mentoring duties.
Principal Software Engineer - Object Store
Principal engineer setting the technical direction for Roblox's in-house, bare-metal, S3-compatible object storage platform that serves assets, media, analytics and ML datasets at exabyte scale, migrating workloads off cloud object storage. Day to day: distributed storage architecture and data-path tuning in C++, Go, or Rust, control-plane and fleet operations, plus mentoring.
Principal Software Engineer, App Performance
Principal engineer on Roblox's Consumer App Performance team, driving stability and performance across the cross-platform C++ game engine and client codebase on mobile, desktop, and console — profiling bottlenecks, mitigating crashes and hangs, and building monitoring and CI/CD guardrails to prevent regressions.
Senior Software Engineer, Reliability
Senior software engineer on Roblox's Reliability team, building fault-tolerant libraries, automation, load-testing guardrails, canarying services, and observability tooling to keep the platform reliable at massive scale. Requires 4+ years of experience and coding skills in languages like Go, C#, or Java.
Software Engineer, Test Frameworks & Tooling
Engineer on Roblox's Test Frameworks & Tooling team, designing and scaling the test automation infrastructure behind Roblox's services — frameworks, runners, orchestration, AI-assisted test generation, canary analysis, and debugging tools — using languages like C#, Go, or Python, onsite in San Mateo, CA.
Mechanical Designer
Fidus is a global high-tech design firm headquartered in Ottawa, with additional design centres in Kitchener-Waterloo and San Jose. We specialize in leading-edge electronic product development, with hardware, embedded…
Technical Developer Connections Manager
Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At…
Senior Software Engineer, Test Frameworks & Tools
Senior engineer on Roblox's Test Frameworks & Tooling team building and scaling backend services for the test automation lifecycle — frameworks, orchestration, AI-assisted test generation, canary analysis, and debugging tools. Requires 2+ years backend/infra experience with C#, Go, or Python; onsite in San Mateo Tue–Thu.
Principal Software Engineer - Service Networking
Principal engineer on Roblox's Service Mesh team: sets technical direction and does hands-on development of Envoy/Istio-based service-to-service networking across Kubernetes, Nomad, and cloud environments, partnering with Security and Compute teams while mentoring senior engineers.
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.
Manager, Product Support Incident Management
Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At…