12,841 a16z jobs
Open roles at companies in the Andreessen Horowitz portfolio.
Senior Software Engineer, 3D Engine Scalability
Design and ship 3D engine systems for avatar/environment geometry (mesh processing, LOD, streaming) to enable high-fidelity worlds on mobile. Core tech: C++, 3D rendering, and performance profiling.
Senior C++ Engineer, Real-time Engine
Senior C++ engineer on Roblox's Geometry Scalability team building real-time 3D engine systems for avatars and environments — mesh processing, level of detail, streaming, and runtime loading — while profiling and optimizing engine performance across devices, especially mobile.
Senior Software Engineer, iOS
The Consumer Platform team at Roblox is seeking a Senior iOS Engineer to lead the architecture and development of their mobile application. The role focuses on enhancing performance, reliability, and user experience within a large-scale Swift and Objective-C codebase.
Principal Software Engineer, Creator Collaboration
Principal engineer on the Collaboration team leading the architecture and design of Roblox Studio and game-engine workflows that let creators and AI agents build, share, and manage reusable content at scale. Day to day: shipping complex C++ features end-to-end, setting technical direction, and mentoring engineers.
[2027] Associate Product Manager, Early Career
Entry-level Associate Product Manager in Roblox's 21-month rotational program based in San Mateo, CA. The APM builds and enhances features used by millions of players and creators (payments, consumer mobile, social, game development), partnering with senior PMs, design, data science, and engineering.
Software Engineer, Data Model
Software engineer on Roblox's Game Engine Data Model team, building the core object hierarchy (scene graph/entity system) that powers all Roblox experiences. Day to day: write high-performance C++ engine code, add automated tests, own features from design to launch, and ship code across desktop, mobile, and console.
Software Engineer, Engine Systems
Builds core diagnostic instrumentation for the Roblox engine — predominantly C++ systems that report stability, reliability, and performance signals across mobile, desktop, and console clients. The engineer helps detect and resolve hangs, crashes, and regressions at scale for millions of concurrent users.
Software Engineer, Engine Infrastructure
Software engineer on Roblox's Engine Infrastructure (Systems) team writing C++ for core game-engine sub-systems like server/client data syncing, game-aware data streaming, and scaling a game server fleet to millions of servers. Requires 3+ years building distributed backend systems; role is onsite in San Mateo, CA (hybrid Tue–Thu).
Senior Software Engineer - Machine Bootstrap
Senior engineer on Roblox's Fleet Management team leading the Machine Bootstrap pod: building and operating MAPI, the Machine API that provisions and rebuilds Roblox's global fleet of hundreds of thousands of bare-metal and cloud machines (incl. GPU/AI servers) in minutes. Systems programming in Go, C/C++, or Rust at massive scale.
Senior Frontend/Fullstack Software Engineer, Sharing
Senior software engineer on Roblox's Sharing team building Roblox Moments, the feature where users capture, share, and discover content. Day to day you own projects end to end across the stack — high-performance React client experiences plus backend services serving billions of content items — partnering with product, safety, and infrastructure teams.
Senior Software Engineer (Backend), Co-Experience
Senior backend engineer on Roblox's Co-Experience team, owning and scaling the platform-level Party System (groups, chat, private gameplay, creator APIs) that keeps social interactions safe and civil for millions of concurrent users. Core tech: microservices in a compiled language (C#, C++, Java, or Go) and consumer-facing APIs, with heavy use of AI-assisted development.
Senior Software Engineer, Computer Graphics
Senior engineer on Roblox's Foundation AI team building engine-level infrastructure that turns the Roblox engine into a scalable platform for synthetic 3D data generation to train 3DGen models. Day-to-day involves C++ graphics/engine systems, pipeline architecture, and close collaboration with ML researchers.
Software Engineer, Data Access
Joins Roblox's Data Access team to build EaaS, a managed OLTP platform handling tens of millions of QPS that abstracts distributed databases and caching behind a productive developer experience. Work spans distributed-systems design, reliability and scalability improvements, rollouts, and production operations, coding in C#, C++, Go, or Python.
Senior Engineering Manager, Ads Data Platform
Hands-on engineering manager leading a team building the data foundation for Roblox's ads business: core data infrastructure, identity, measurement, audience targeting, and ML feature pipelines at massive scale. Focus on technical roadmap, privacy-safe systems, hiring, and cross-functional partnership.
Senior Software Engineer, Productivity
Roblox is hiring a Senior Software Engineer on its Engine Productivity team (Portal) to build AI agent sandboxes, harnesses, and integrations in C, C++, and Rust that improve developer workflows for engineers building Roblox's game engine, clients, and Studio. Based onsite in San Mateo, CA (Tue–Thu).
Creative Director
Hands-on Creative Director shaping brand and platform creative for Roblox: leading concept-to-delivery art direction, mentoring a multidisciplinary creative team, and building creative workflows, with a focus on integrating AI tools into ideation and production. Core tools include Figma, Adobe Creative Suite, and 3D software.
Senior Software Engineer- User Behavior
Senior backend engineer on Roblox's User Behavior team, building high-scale safety infrastructure: a low-latency per-user behavioral data layer, a centralized rules/ML consequence engine, and a unified intervention-delivery and abuse-reporting framework. Primarily Go backend services, gRPC APIs, streaming/batch pipelines, and ML integrations serving hundreds of millions of users.
Senior Director, Privacy, Product and Platform Security
Senior security leader at Roblox who owns the strategy, roadmap, and organization for Product Security, Platform Security, and Privacy Engineering, reporting to the CISO. Day to day they lead security/privacy engineering managers and senior ICs, embed security and privacy-by-design into the SDLC, and drive risk-based programs across the platform's cloud, infrastructure, and data systems.
Software Engineer, GenAI Platform
Roblox is hiring a Software Engineer for its Foundation AI organization to build the platforms, services, and infrastructure powering machine learning, generative AI, and agentic experiences — spanning model training/inference, LLM services, data systems, and GPU/distributed infrastructure — primarily using languages like Go, Python, or Rust. Based onsite in San Mateo, CA (hybrid Tue–Thu).