Senior Linux Kernel Engineer

Bloomberg; City Of London; On-site; GBP 30,000 - 45,000; Full time

Job summary

A leading financial technology company in London is seeking a Systems Intern to enhance Linux kernel performance and engage in team collaboration on operational systems. This role involves advising on system design and contributing to open-source efforts. Ideal candidates will have a degree in Computer Science or relevant experience, with strong Linux kernel understanding and debugging skills.

Qualifications

• Ability to create robust testing processes for hardware changes.
• Eagerness to work with a group and share knowledge.

Responsibilities

• Maintain stability and performance of operating systems.
• Advise on design and utilization of enterprise-class operating systems.
• Contribute to the open-source community.

Skills

Deep understanding of the Linux kernel

System performance tuning

C source code debugging

Team collaboration

Education

Degree in Computer Science or related field

Tools

eBPF

Rust

Python

Chef

SaltStack

Jenkins

Ansible

Job description

Description & Requirements

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, and the group uses an infrastructure-as-code approach in conjunction with open-source tools to ensure a scalable and reliable environment in which to operate.

Within MSIE, the Systems Internals team is responsible for kernel-space performance and configuration standards, developing tooling for networking stack functionality, and providing engineering leadership for how best to optimize the interaction between applications and OS interfaces. The team is composed of a set of engineers with expertise in eBPF and/or the Linux kernel and acts as a bridge between application development teams and the lower-level components of the OS by assisting with application performance profiling, benchmarking and certifying production-readiness of new OS releases and patches, and advising on how best to consume system resources.

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 regularly 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 utilization of enterprise-class operating systems, with particular focus on Linux. You will have the opportunity to work on developing performance tooling while testing the latest kernels and their features. You will also have the opportunity to contribute back to the open-source community; it is a rewarding experience you can explore with us.

You’ll need to have

• Deep understanding of the Linux kernel including the virtual memory, VFS, IPC, network, and process scheduling subsystems

• Proven experience in system performance tuning—balancing low latency vs. throughput, NUMA optimization, and hardware/BIOS configuration

• Ability to create robust testing and certification processes to comprehensively evaluate the impact of hardware changes, tunables, and system software updates to the Bloomberg application stack

• 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 formalized performance analysis methodologies such as the USE Method to address complex problems

• Familiarity with one or more of the following technologies is preferred: Chef, SaltStack, Jenkins, and Ansible

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Bloomberg is an equal opportunity employer and we value diversity at our company. We do not discriminate on the basis of age, ancestry, color, 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. If you would prefer to discuss this confidentially, please email [e-mail]