Unix Engineer

• Design, build, configure, and optimise Unix/Linux systems supporting high-performance or low-latency workloads
• Support infrastructure aligned to market data platforms, real-time processing, or grid/HPC environments
• Work with high-performance networking technologies and infrastructure components, including exposure to accelerator ecosystems
• Continuously improve platform performance, stability, and scalability
• Provide L2/L3 support for critical production systems, ensuring high availability and rapid incident resolution
• Perform deep technical troubleshooting and root cause analysis across complex system environments
• Support systems operating under strict SLAs and uptime requirements
• Implement and maintain secure build standards, OS hardening, and patching processes
• Manage access controls (e.g. sudo, PAM, RBAC) and address vulnerabilities in line with enterprise policies
• Support audit, risk, and compliance activities within a regulated banking environment
• Contribute to data centre migrations, infrastructure modernisation, and platform stabilisation initiatives
• Support performance optimisation programmes for existing and new workloads
• Work closely with engineering and delivery teams on system improvements and architectural evolution
• Operate within an ITIL-aligned framework, including incident, problem, and change management
• Maintain strong documentation, operational standards, and audit readiness
• Collaborate effectively with global teams and stakeholders

• Strong experience with enterprise Unix/Linux platforms, including Linux distributions (RHEL, Oracle, SUSE), Unix variants (AIX, Solaris, HP-UX)
• Proven experience providing L2/L3 production support in large-scale environments
• Deep command-line proficiency and hands-on system configuration experience
• Strong understanding of system performance tuning, OS patching and lifecycle management, monitoring and troubleshooting tools
• Experience in regulated environments (e.g. financial services, banking)
• Practical exposure to OS hardening and vulnerability remediation, access management frameworks, audit and compliance processes
• Experience working in low-latency, high-performance, or market data environments
• Exposure to high-performance computing (HPC) or grid computing frameworks, real-time or latency-sensitive systems
• Understanding of high-performance networking and infrastructure acceleration
• Exposure to technologies such as Mellanox, Solarflare, or equivalent ecosystems
• Hands-on engineering focus

Offload engines, FPGA, or similar accelerator technologies