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Low Latency Linux Engineer

2 months ago

London, UK, United Kingdom Global Hedge Fund Full time

Position Overview


This is an opportunity for a Senior Low Latency Linux Engineer to join a leading global hedge fund. The candidate will be responsible for project delivery, support escalations, monitoring, automation, security, documentation, and capacity management for Squarepoint’s low latency infrastructure. This will involve collaborating with our business partners, application owners, clients, vendors, and internal teams (SRE, Network, Application Support and Application Development, Quants, etc.) to deliver end to end solutions in a timely manner.


  • Deliver systems, based on Linux (CentOS and Rocky), driven by requirements and developed standards to ensure consistency with 400+ servers across 22 sites.
  • As part of an global team, handle day-to-day requests, services, and processes to ensure a reliable environment by implementing automation, optimization, and ongoing service enhancement whenever feasible for exceptional service performance.
  • Collaborate with different teams and stakeholders to establish and launch new colocation sites globally.
  • Take the initiative to automate routine tasks and promote the practice of Infrastructure as Code.
  • Continuously improve the Linux server infrastructure by optimizing workflows and processes.


Required Qualifications:


  • 5+ years of experience working with Linux (RHEL/CentOS/Rocky preferred) in a large complex or niche environment with the following areas of focus: operations, systems engineering and systems performance.
  • Server Management and Support: HP, SuperMicro, Dell, various overclock servers.
  • Low latency network interfaces and kernel bypass (configuration and optimization): Solarflare with onload, Mellanox with VMA.
  • System hardware/OS tuning and performance troubleshooting, understanding of CPU architectures.
  • Experience with build and configuration management tools, specifically Chef or Ansible.
  • Experience with observability tools, specifically Grafana and Prometheus.
  • Highly motivated and a keen eye for scripting and automation in Python, Ruby, and Bash.
  • In depth knowledge of server network stack configuration, tuning and troubleshooting including TCP, UDP(unicast/multicast), NTP, PTP, wireshark/tshark
  • Strong communication: verbal and written.
  • Critical thinking and problem-solving skills to tackle troubleshooting the unknown, glitches and the obscure.
  • Well-organized, proactive, resourceful, able to handle a fast-paced environment, question the status quo, accountable and possesses an ownership mindset.
  • Good understanding of trading venues such as Nasdaq, LSE, Euronext etc.
  • Degree in Engineering, Computer Science or related experience.