Platform Specialist (City of London)

Role: Platform Specialist – Low Latency Infrastructure (ULL)

Team: Application Engineer

Location: London / hybrid

Salary: Up to £280k base + Benefits

Our client is a global leader focused on delivering mission-critical, low latency infrastructure solutions for high-performance trading environments. They are looking for a highly skilled Platform Specialist to join their talented team and ensure the highest levels of availability, performance, and security across their low latency platform.

In this role, you will:

• Design, document, and enhance platform services including servers, storage, and cloud infrastructure.
• Provide L3 escalation support to troubleshoot and remediate performance and availability issues.
• Collaborate with internal and external partners including network, application, quant, and business teams to deliver scalable solutions.
• Proactively identify potential system bottlenecks and implement performance tuning and optimizations.
• Manage and tune Linux systems (RHEL, Rocky, CentOS, OEL) for low latency applications, including memory, CPU, and network tuning.
• Work closely with low latency network technologies, including kernel bypass with Solarflare/onload, and understand physical server architecture differences (Intel, AMD, ARM).
• Automate operational workflows and scripting using Python, Rust, or Bash.

The ideal candidate will have:

• 8+ years experience in Linux system operations, engineering, or performance tuning in enterprise or trading environments.
• Experience with High Performance Computing (HPC)
• Deep understanding of network protocols (TCP, UDP, multicast) and low latency networking principles.
• Hands-on experience with kernel tuning and kernel development.
• Familiarity with configuration management tools such as Ansible, Chef, or Terraform.
• Strong scripting and automation skills, preferably Python, Rust, or Bash.
• Excellent problem-solving skills with a proactive and ownership mindset.
• Strong verbal and written communication skills.

Nice to have:

• Knowledge of trade flow protocols like FIX, BOE, OUCH/ITCH, PILLAR, SBE, OMEX.
• Experience with FPGA-based applications and L1 network design.
• Familiarity with various network switch architectures and vendors.

If you’re ready to work in a high-paced, challenging environment where your expertise directly impacts critical trading infrastructure, apply now to join this world-class team.

Interested? Apply today to advance your career in low latency platform engineering!