about 4 hours ago
Frankfurt, Germany +2 moreSenior / Staff+
H1B Sponsor
Responsibilities
- Building and improving secure workload isolation systems.
- Designing and implementing sandboxing mechanisms for user-generated and AI-generated code execution.
- Working with Linux security primitives such as namespaces, cgroups, seccomp, permissions, and access controls.
- Profiling large distributed systems and identifying bottlenecks.
- Improving networking performance and traffic management.
- Designing and evolving internal protocols and service communication mechanisms.
- Contributing to and debugging system-level services and infrastructure components.
- Evaluating and integrating technologies such as gVisor, KVM, container runtimes, and virtualization technologies.
- Driving technical projects from architecture and requirements gathering through implementation and production rollout.
Requirements
- 5+ years of industry experience.
- Experience building and shipping large-scale, reliable, highly distributed systems.
- Systems-level programming experience, especially in C, Go, Rust.
- Expertise in L2, L3, and/or L4 networking protocols.
- Good understanding of Linux networking and security.
- Experience building on top of Linux kernel networking primitives – netfilter, nftables, eBPF, tc, network namespaces, etc.
- Experience with large-scale distributed data pipelines, from data structuring to efficient querying to data analysis.
- Experience of working with public cloud infrastructure providers (AWS/Azure/Google Cloud).
- Understanding of Kubernetes concepts.
- Excellent debugging and optimization skills.
- Understanding at the protocol level, including the differences between what the specs say, and what actually happens on the Internet.
- Contributions to open source projects is a plus.
- Excited by the idea of optimizing complex solutions to general problems.
- Attention to detail and ability to solve complex customer problems.
- Own solutions end-to-end and driving the design, development, and deployment process.
- Able to work across teams and level common, sustainable solutions.