Roblox Senior Software Engineer on Roblox's Cache team leads architectural transition to a next-generation caching service. The role involves optimizing distributed systems for sub-millisecond latency and high availability.
Responsibilities
Lead the architectural transition to a next-generation, multitenant caching service built on ValKey, ensuring strict data, resource, and failure isolation for all tenants.
Drive systemic optimizations to mitigate head-of-line blocking, manage hot keys, and maximize CPU and memory utilization across physical machine clusters.
Design and build robust frameworks to automate development, chaos testing (fault/latency injection), and monitoring for 24x7 mission-critical services, targeting 99.99%+ availability and elastic scalability.
Champion engineering best practices by leading design reviews, performance benchmarking, failure drills, and blameless post-incident retrospectives.
Mentor and empower engineers, fostering a culture of deep domain expertise and seamless knowledge sharing across the Storage, Platform, and Product teams.
Experience & Education: A BS degree in Computer Science (or equivalent professional experience) with at least 6+ years of hands-on software engineering experience.
Distributed Systems Expertise: Deep domain knowledge in building and operating large-scale distributed systems.
Infrastructure Chops: A strong builder mindset with proven experience running Active/Active distributed systems on container orchestrators like Kubernetes or Nomad.
Programming Proficiency: Strong, hands-on programming experience in Go and C++.
Problem-Solving Track Record: Proven success in resolving massive-scale bottlenecks, such as overcoming the limitations of decentralized Gossip protocols or mitigating partial failures in distributed systems.
Observability Skills: Hands-on experience with modern telemetry and observability stacks (e.g., Prometheus, Grafana, AlertManager, Kibana).
[Bonus] Open Source Contributions: A track record of contributing to or maintaining major open-source caching projects such as Redis, ValKey, or Memcached.
[Bonus] Advanced Cache Internals: Experience extending cache functionality (e.g., writing custom Redis modules in C/Rust, complex Lua scripting) or deep-tuning underlying memory allocators like jemalloc.
[Bonus] Caching Proxies & Topologies: Experience with caching proxies (e.g., Twemproxy, Envoy Redis filter) and designing complex, multi-tiered caching architectures.
For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page.
