12,841 a16z jobs
Open roles at companies in the Andreessen Horowitz portfolio.
Engineering Manager, App Performance
Leads the Consumer Apps Performance team at Roblox, making the app fast, responsive, and resilient across mobile, desktop, and console platforms. The role involves managing and mentoring engineers, defining performance and regression-defense strategy, and partnering with PM and Data stakeholders. Onsite at San Mateo, CA HQ.
Principal Software Engineer, WebRTC
Principal engineer on Roblox's Audio-Video-Communication team, building a real-time communication platform from the ground up — voice chat, 3D audio, and large-scale broadcast — to serve billions of users across mobile, console, and other devices. Core stack is C++ with emphasis on distributed systems and low-level performance optimization.
Senior/Principal Product Manager, Video Generation (Roblox Reality)
Senior/Principal Product Manager at Roblox who owns the strategy, launch, and creator controls for the Roblox Video Model — generative video world models paired with the game engine — taking it from lab demo to creator early access to a scaled platform capability on cloud GPU infrastructure.
Director, Capacity Planning & Engineering
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…
Operations Manager, Influencer Marketing
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…
Principal Software Engineer, Creator Game Operations
Roblox is hiring a Principal Software Engineer on the Creator Success Team to build mission-critical backend services supporting game creators, including ML-driven player insights pipelines, creator communication tools, and a remote config/experimentation platform. The role involves leading technical decisions at massive scale using C#, Java, or Go and distributed systems, based onsite in San Mate
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 Data Scientist, Engine Infra
Senior Data Scientist on Roblox's Engine Infra team, defining metrics and telemetry for the game-server (RCC) fleet and edge compute, building analytics pipelines and dashboards, and leading experiments and causal analyses to improve fleet efficiency, reliability, and player experience at scale.
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.
Engineering Director, Storage
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 - Traffic Proxy
Senior systems engineer on Roblox's Traffic Proxy Services team, building and operating the global edge network and high-performance Layer 7 proxies (Rust on Kubernetes) that handle billions of daily web/API requests and defend the platform against DDoS and large-scale automated abuse.
Senior Security Software Engineer, Sandbox Platforms
Roblox is hiring a senior security engineer to design, build, and harden process sandboxes that isolate untrusted code on Linux, macOS, and/or Windows. Day to day you'd work with platform sandboxing primitives (seccomp, namespaces, Seatbelt, AppContainer), minimize attack surface, write threat models, and do systems programming in C, C++, or Rust.
Principal Software Engineer, Ads User Experience
Principal software engineer building Roblox's first-of-its-kind ads system inside its C++ game engine — developing new ad formats starting with video, and designing high-performance, scalable systems that shape a new multi-billion-dollar ads business while preserving user experience and platform integrity.
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.
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.
Executive Business Partner, Chief Creator Officer
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…
Software Engineering Manager - Network Transport
Engineering manager role at Roblox leading the Engine Networking team — owning architecture, execution, and career growth of engineers building real-time state synchronization and asset streaming/delivery systems. Core tech: C++, Linux networking, congestion control/QoS, CDNs, caching, and multithreaded client/server systems at global scale.
Software Engineering Manager - Engine Networking
Leads Roblox's Engine Networking team, which delivers real-time game state and content for seamless multiplayer experiences to millions of daily players. The manager owns roadmaps end to end, stays hands-on with C++ coding and architecture review, and hires and coaches engineers building low-latency networking at massive scale.
Senior Software Engineer, Creator Services Translation
Senior engineer on Roblox's Creator Services Translation team, designing and building highly scalable distributed backend systems for the localization pipeline (text, image, audio detection, translation, serving, rendering). Full-stack work spans client, game engine, backend services, and ML models, using C#, C++, Go, or Python with microservices.
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.