High-Performance Linux Engineer

A leading global trading environment is seeking a High-Performance Linux Engineer to design and optimize the infrastructure powering real-time systems at scale. This is not a standard infrastructure role - you’ll be working in a highly customized bare-metal environment where every microsecond matters.

You’ll operate at the core of a performance-critical platform, shaping systems that must remain fast, stable, and precise under extreme conditions. From kernel-level tuning to large-scale automation, your work will directly impact how efficiently the entire technology stack performs.

What You’ll Work On

• Designing and operating a global fleet of high-performance Linux servers across multiple data centers.
• Building and evolving infrastructure that supports demanding, real-time workloads.
• Optimizing system performance at every layer, from hardware interaction to OS-level tuning.
• Developing automation-first solutions to improve scalability, consistency, and operational efficiency.
• Using observability data to drive performance improvements and capacity planning.
• Exploring and implementing new technologies to push system performance and reliability further.
• Collaborating across infrastructure, networking, and software teams to solve complex, cross-domain challenges.

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Key Responsibilities

• Design, deploy, and manage large-scale Linux infrastructure with a focus on performance and reliability.
• Diagnose and resolve system issues quickly while continuously improving platform stability.
• Perform low-level performance tuning (CPU affinity, NUMA, HugePages, IRQ balancing, etc.).
• Bridge the gap between hardware and software to ensure optimal system interaction.
• Build and maintain automation tools using Python and infrastructure-as-code practices.
• Manage provisioning and deployments using tools such as Ansible and Terraform.
• Monitor system health using Prometheus, Grafana, Alertmanager, and similar platforms.
• Contribute to on-call rotations to support globally distributed systems.

What We’re Looking For

• Strong experience in Linux engineering, including system administration, debugging, and OS provisioning.
• Deep understanding of networking fundamentals (TCP/IP, DNS, UDP/TCP, multicast, packet analysis).
• Hands-on experience with diagnostic tools such as eBPF, tcpdump, strace, lsof, and netcat.
• Proven expertise in kernel and hardware-level performance tuning (CPU pinning, cache optimization, BIOS/UEFI).
• Experience with infrastructure automation using Python and modern tooling.
• Familiarity with monitoring and observability stacks (Prometheus, Grafana, Elastic, etc.).
• Experience with Infrastructure-as-Code tools such as Ansible and Terraform.
• Strong problem-solving skills and ability to work in a high-performance, fast-paced environment.
• Curiosity and drive to continuously improve systems and learn new technologies.

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Benefits

• €150,000 - €300,000 total compensation, depending on experience
• Full relocation and visa sponsorship where applicable.
• Comprehensive health insurance and wellbeing support.
• First-class commuting and premium in-office perks, including meals and wellness services.
• Generous learning and development budget for certifications, training, and conferences.
• A highly collaborative, engineering-driven culture focused on performance and innovation.

Not a match? Feel free to check our website for more openings and let's get in touch for your next challenge in 2026!

https://elityglobal.com/careers