IT HFT System Network Specialist London

Overview

About us:

Founded in 2015, B2C2 is a global leader for institutional liquidity within digital assets. We provide 24/7 pricing for spot, futures, options, CFDs, and NDFs across market conditions. Our team covers pricing, structuring, risk, systems, and regulation. Headquartered in London with global offices in Paris, Jersey City, Tokyo, Singapore, and Luxembourg, we focus on attracting the right talent and offer opportunities in an exciting industry.

About the role:

We are seeking a highly specialized HFT System and Network Engineer to join our trading infrastructure team. You will bridge AWS environments and physical colocation facilities, optimise the global trading stack end-to-end, minimise tail latency, optimise cross-region connectivity, and automate the deployment of performance-tuned bare metal and cloud instances. This is a high-impact role where optimisations translate to our competitive edge in execution speed across CeFi and DeFi exchanges.

• Low-latency Infrastructure Build:
  Architect and deploy HFT-grade stacks, focusing on low-latency connectivity to crypto exchanges and internal networking.
• Hybrid Cloud Optimisation:
  Manage the interplay between AWS servers and physical hardware in traditional colocation centers.
• System Performance Tuning:
  Implement deep-level Linux kernel optimisations to minimise jitter and improve performance.
• Network Automation:
  Develop "Zero-Touch" deployment pipelines using Terraform and Ansible to ensure infrastructure is reproducible and error-free.
• Precision Monitoring:
  Instrument the network for microsecond-level visibility, tracking packet loss, jitter, and retransmissions.
• Connectivity Management:
  Coordinate with exchanges and providers to manage cross-connects, LOAs, and high-speed transit lines.

• Low-Latency DNA:
  Experience in HFT or ultra-low latency environments where microseconds matter.
• Linux Mastery:
  Deep knowledge of system internals (CPU pinning, NUMA, kernel bypass) and performance profiling.
• Advanced Networking:
  Expert understanding of BGP, Multicast, and AWS networking.
• Automation-First Mindset:
  Proficiency in Python/Bash and Infrastructure as Code (Terraform) to manage complex global deployments.
• Hardware Savvy:
  Comfortable with high-performance NICs, low-latency switches (Arista/Cisco), and physical data centre requirements.
• Execution-Driven:
  Clear, concise communicator who thrives in high-pressure environments and takes ownership of the entire infra lifecycle.

• An amazing global culture, who are ambitious, innovative and fun while working with the highest levels of honesty and integrity.
• Two discretionary bonus awards a year.
• A range of benefits in line with local market practice.
• Regular fun events and activities, as well as Social Impact volunteering days.
• A strong, values-based culture across the organisation.

• Ambitious - Striving to make history through world class achievements
• Innovative - Forward looking in our solutions for clients and employees
• Meritocratic - Rewarding positive contribution across the organisation
• Collegiate - Achieving through teamwork in a healthy environment
• Risk Aware – Informed decision making

B2C2 is committed to a policy of equal employment opportunity for applicants and employees and we welcome applicants from all backgrounds. It is the policy of B2C2 to apply recruiting, hiring, training, promotion, compensation and professional development practices without regard to race, colour, religion, sex (including pregnancy, sexual orientation and gender identity), national origin, age, disability or genetic information, or because someone is married or in a civil partnership or any other characteristic protected by federal, state or local laws, regulations or ordinances.

As such, B2C2 will not tolerate discrimination against any of our employees on the basis of membership in a protected category. We are also committed to creating an inclusive environment to ensure we attract, engage, promote and retain the best talent. We will consider flexible working arrangements for any of our roles.

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