At a Glance
- Tasks: Build and optimise low-latency trading infrastructure using advanced Linux systems.
- Company: A1X Trading, a dynamic firm in digital asset derivatives markets.
- Benefits: Competitive salary, hybrid work model, and opportunities for innovation.
- Other info: Collaborative culture with excellent career growth potential.
- Why this job: Join a high-impact team shaping the future of trading technology.
- Qualifications: 5+ years in Linux systems, strong networking skills, and experience in trading environments.
The predicted salary is between 75600 - 92400 £ per year.
Location
UK (Hybrid)
Type
- Permanent or Contract
- About A1X
A1X Trading is a principal trading firm focused on the digital asset derivatives markets, using advanced technology and quantitative strategies to provide liquidity and express informed views.
The firm combines systematic trading approaches with robust infrastructure to operate efficiently in fast-moving, global markets.
As a boutique organization, A1X Trading offers a high-impact environment where team members can shape systems and processes directly.
The company is expanding internationally, driven by a commitment to innovation, performance, and excellence in the evolving digital asset landscape.
About the Role
We are looking for a senior Linux Infrastructure Engineer to build and optimise latency-sensitive trading infrastructure, with a strong focus on bare-metal Linux, low-latency networking and exchange connectivity.
The role also includes supporting AWS infrastructure, automation and connectivity across colocated and cloud environments.
Responsibilities
- Design, deploy, optimise and maintain bare-metal Linux infrastructure for latency-sensitive trading systems that handle market data, strategy, alpha, order management and execution.
- Specify and validate hardware choices: processors, memory, storage, and network interfaces.
- Profile and tune OS components such as BIOS, CPU & IRQ affinity, NUMA node selection, huge pages, power management, NIC configuration and relevant kernel parameters for predictable performance.
- Establish secure configuration and appropriate patch-management processes.
- Networking & Colocation
- Own deployments in exchange colocation environments such as Equinix LD4.
- Coordinate with providers, exchanges and remote-hands teams to provision rack space, power, server and network hardware, cross-connects, and global private transport.
- Configure internal segmentation and management networks, and coordinate provider handoff requirements such as VLAN tags, port settings, and routing.
- Troubleshoot TCP/IP and UDP connectivity and investigate latency, jitter, packet loss and other performance issues.
- Ensure accurate time synchronization and packet timestamping with PTP and NIC hardware clocks.
- Design and maintain exchange-facing, latency-sensitive AWS infrastructure including instance selection and placement, enhanced networking, VPC design, packet-level monitoring, and latency diagnostics.
- Support staging, research, operations and testing workloads that rely on services such as Sage Maker, EC2, S3 and Code Artifact.
- Automate reproducible provisioning, deployment and configuration tasks with Terraform, Git Hub Actions, AWS Systems Manager, systemd, cloud-init, Python and Bash.
- Implement connectivity between cloud and colocated workloads with AWS Direct Connect or equivalent services.
- System Reliability
- Monitor the health, performance, and availability of our infrastructure, proactively reporting and resolving incidents.
- Develop operational documentation, runbooks, monitoring, alerting, logging, backup, and disaster-recovery processes.
- Work closely with software engineers, quantitative developers, and traders to improve system performance, reliability and ergonomics.
Requirements
- 5+ years of professional experience administering production Linux systems.
- Strong understanding of Linux internals and performance optimisation such as CPU pinning, IRQ tuning, NUMA placement, and kernel optimisation.
- Experience building and operating bare-metal server infrastructure.
- Strong networking knowledge, including TCP/IP, UDP, routing, VLANs, and NIC configuration.
- Experience benchmarking and troubleshooting system and network performance.
- Strong Bash, Python, troubleshooting and documentation skills.
- Experience supporting electronic trading, market-making, exchange, or market-data systems.
- Kernel bypass technologies: DPDK, Open Onload, AF_XDP
- Performance profiling C and C++ applications
- #J-18808-Ljbffr
Low-Latency Trading Infrastructure Engineer employer: A1X Trading
A1X is an exceptional employer that fosters a collaborative and innovative work culture, perfect for those passionate about technology and finance. With opportunities for professional growth and development, employees are encouraged to push boundaries while working on cutting-edge projects in a flexible remote environment across the EU timezone. Join us to be part of a dynamic team that values creativity and excellence in building high-performance market data solutions.
StudySmarter Expert Advice🤫
We think this is how you could land Low-Latency Trading Infrastructure Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at A1X Trading or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to A1X Trading.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like A1X Trading.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like A1X Trading that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Low-Latency Trading Infrastructure Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at A1X Trading.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at A1X Trading and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at A1X Trading
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If A1X Trading uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
