System (Linux) Engineer: £150,000 + Benefits (Quant Finance) in London

System (Linux) Engineer: £150,000 + Benefits (Quant Finance) in London

London Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
Hunter Bond

At a Glance

  • Tasks: Support and enhance Linux infrastructure for a leading quant trading firm.
  • Company: World-leading quantitative trading firm in London with a hybrid work model.
  • Benefits: Competitive salary of £150,000 plus benefits, including professional development.
  • Other info: Flat structure promoting collaboration among top infrastructure professionals.
  • Why this job: Join a dynamic team and work on ultra-low-latency systems that make a real impact.
  • Qualifications: 5+ years in advanced Linux environments and strong AWS expertise required.

The predicted salary is between 60000 - 80000 £ per year.

A world‑leading quant trading firm is hiring a Systems (Linux) Engineer to support, maintain and enhance the Linux infrastructure that its 24/7 trading operation runs on. This is deep infrastructure work at the sharp end — ultra‑low‑latency, high‑frequency, real‑time systems where performance is measured in microseconds and custom OS builds are the norm.

You’ll sit close to the action: keeping the Linux environment healthy day‑to‑day (emergency response, change execution, troubleshooting, performance tuning), while building the automation that provisions, configures and monitors thousands of Linux servers. You’ll manage core services (DHCP, LDAP, DNS, NFS) across on‑prem, hosted data centres and public cloud, and partner with the Cloud Architecture team to design and refine trading systems running in complex brownfield AWS environments purpose‑built for low latency.

What you’ll be doing

  • Day‑to‑day support of a critical Linux trading environment — emergency response, change execution, troubleshooting and resolving performance issues
  • Developing and refining tools to automate provisioning, configuration and monitoring at the scale of thousands of servers
  • Managing core services (DHCP, LDAP, DNS, NFS) across on‑prem, hosted DCs and public cloud
  • Working with Cloud Architecture to review existing and implement new designs for trading systems on AWS
  • Improving the performance, resilience, availability and observability of existing cloud environments
  • Participating in a rotational on‑call schedule (including early mornings and weekends)

What you’ll bring

  • 5+ years administering an advanced Linux environment, with deep knowledge of Linux internals
  • Strong server‑side networking (protocols, configuration)
  • Proven automation/monitoring tool development; configuration management with Ansible
  • Expert Bash and good Python for scripting and automation
  • Solid grasp of source control, CI/CD and automated deployment
  • Strong AWS expertise (EC2, ENA, VPC, ELB, Direct Connect, S3, EBS) in a low‑latency performance‑engineering context — including how Linux and kernel components are tuned for EC2 and the AWS network
  • A methodical problem‑solver who communicates well and drives things to completion

Nice to have

  • Open‑source or personal projects
  • AWS DevOps Engineer Professional or AWS Advanced Networking certifications

Techies report to techies — a flat structure built to hire and keep some of the brightest infrastructure minds in the industry.

Hunter Bond

Contact Details:

Hunter Bond Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land System (Linux) Engineer: £150,000 + Benefits (Quant Finance) in London

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We think you need these skills to ace System (Linux) Engineer: £150,000 + Benefits (Quant Finance) in London

Linux Administration
Networking Protocols
Automation Tool Development
Configuration Management with Ansible
Bash Scripting
Python Scripting
Source Control

Some tips for your application 🫡

Showcase Your Problem-Solving Skills:In IT consulting, it's all about problem-solving, so make sure your CV highlights your analytical skills and any relevant projects you've tackled. Mention specific technologies or methodologies you've used to resolve issues or improve processes; this shows you can think critically and deliver results, which is vital for us at Hunter Bond.

Highlight Relevant Certifications:Certifications like ITIL, PMP, or even specific tech stack qualifications can really make you stand out. Make sure to include these in your CV, as they not only demonstrate your expertise but also your commitment to staying current in the field. We love seeing candidates who are proactive about their professional development!

Tailor Your Cover Letter:Your cover letter is your chance to connect personally with us at Hunter Bond. Share stories about your experiences in IT consulting, and how they shaped your desire to join our team. Mention why you’re excited about this particular role, and how you see yourself contributing to our projects.

Keep It Clear and Concise:We're all busy, so make sure your application is easy to read. Use bullet points for key achievements, and don’t overload us with jargon. A clean, professional layout goes a long way. Remember, the clearer your application, the more likely we are to invite you in for an interview!

How to prepare for a job interview at Hunter Bond

Brush Up on Your Technical Skills

For an IT consulting role, be ready to demonstrate your technical prowess. You might face questions on systems integration, cloud technologies, or even troubleshooting specific software. If you have experience with tools like AWS, Azure, or even specific programming languages, make sure you can talk about them fluently.

Showcase Your Problem-Solving Approach

IT consulting is all about solving problems for clients. Think about how you can illustrate your approach to a past challenge using the STAR method (Situation, Task, Action, Result). It's a great way to show how you tackle complex issues and come up with effective solutions.

Know the Business Impact of IT Solutions

When discussing your experiences, focus not just on the tech solutions you implemented, but also on their business impact. Employers want to see that you can connect IT with organisational goals. Prep examples that highlight how your tech contributions improved efficiency or reduced costs for past clients or projects.

Prepare for Behavioural Questions

Since IT consulting often involves teamwork and client interactions, expect behavioural questions that assess your interpersonal skills. Be prepared with examples that demonstrate your adaptability, communication skills, and how you handle client feedback. Before the interview, think of situations where you worked closely with clients to create effective IT strategies or changes.