Senior Linux Kernel Engineer

Our Team: The Managed Systems Integration Engineering (MSIE) group is responsible for provisioning, configuring, and maintaining the majority of Bloomberg’s production fleet throughout its lifecycle, using an infrastructure-as-code approach in conjunction with open-source tools to ensure a scalable and reliable environment. Within MSIE, the Systems Internals team focuses on kernel-space performance and configuration standards, developing tooling for networking stack functionality, and providing engineering leadership for optimising the interaction between applications and OS interfaces.

The team consists of engineers with expertise in eBPF and/or the Linux kernel, acting as a bridge between application development teams and lower-level OS components by assisting with application performance profiling, benchmarking, certifying production-readiness of new OS releases and patches, and advising on resource consumption.

What’s in it for you: You’ll work with modern, open-source tooling while maintaining mission-critical systems hosting a wide array of applications for the Bloomberg Terminal product. You will collaborate with other OS and service-owning teams to maintain the stability and performance of operating systems and servers. We’ll depend on you to advise on the design, architecture, and utilisation of enterprise-class operating systems, particularly Linux. You will have the opportunity to develop performance tooling while testing the latest kernels and their features, and contribute back to the open-source community.

We’ll expect you to:

• Build and evolve eBPF-based tools to enhance observability of the network and other operating system layers
• Improve Bloomberg’s internal Linux kernel regression testing framework
• Contribute to upstream Linux kernel development and enhancement requests
• Investigate and resolve complex kernel and network performance issues in partnership with application teams
• Develop tools that improve telemetry and deepen visibility into application behaviour under various system loads
• Create internal documentation to support knowledge sharing and engineering best practices

You’ll need to have:

• Deep understanding of the Linux kernel including virtual memory, VFS, IPC, network, and process scheduling subsystems
• Proven experience in system performance tuning—balancing low latency vs. throughput, NUMA optimisation, and hardware/BIOS configuration
• Ability to create robust testing and certification processes to evaluate the impact of hardware changes, tunables, and system software updates
• Proficiency in reading and debugging C source code to troubleshoot kernel-space issues
• Eagerness to work with a group, share knowledge, and contribute to team goals
• A Degree in Computer Science, Computer Engineering or related technical field, or equivalent work experience

We would love to see:

• Experience working with and developing in the Linux kernel, either using eBPF, as a kernel developer, or building low-level programs in C
• Experience programming in Rust or Python
• Experience with applying formalised performance analysis methodologies such as the USE Method
• Familiarity with one or more of the following technologies: Chef, SaltStack, Jenkins, and Ansible

Bloomberg is an equal opportunity employer and values diversity at our company. We do not discriminate on the basis of age, ancestry, colour, gender identity or expression, genetic predisposition or carrier status, marital status, national or ethnic origin, race, religion or belief, sex, sexual orientation, sexual and other reproductive health decisions, parental or caring status, physical or mental disability, pregnancy or parental leave, protected veteran status, status as a victim of domestic violence, or any other classification protected by applicable law. Bloomberg is a disability inclusive employer. Please let us know if you require any reasonable adjustments to be made for the recruitment process.