IT - HFT System & Network Specialist - London London

B2C2; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Two discretionary bonus awards a year

Benefits in line with local market-pri

Job summary

B2C2 in London is seeking a highly specialised IT - HFT System & Network Engineer to join our trading infrastructure team. You will bridge the gap between our cutting-edge AWS environments and physical colocation facilities, optimizing the global trading stack for ultra-low latency and high-speed cross-region connectivity.

You will deploy HFT-grade stacks, automate deployments with Terraform and Ansible, and tune Linux systems to minimise jitter, delivering performance that underpins our edge in

Qualifications

• Low-Latency DNA: Proven experience in HFT or ultra-low latency environments where microseconds matter.
• Linux Mastery: Deep knowledge of system internals 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: Comfort working with high-performance NICs, low-latency switches (Arista/Cisco).
• Execution-Driven: A clear, concise communicator who thrives in high-pressure environments.

Responsibilities

• Low-latency Infrastructure Build: Architect and deploy HFT-grade stacks with low-latency connectivity to crypto exchanges and internal networking alike.
• 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 reproducible infrastructure.
• 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.

Skills

Low-Latency DNA

Linux Mastery

Advanced Networking

Automation-First Mindset

Hardware Savvy

Execution-Driven

Tools

Terraform

Ansible

AWS networking

Job description

IT - HFT System & Network Specialist - London

London

About us:

Founded in 2015, B2C2 is a global leader for institutional liquidity within digital assets.We bring 24/7 365 days a year deep, reliable pricing for spot, futures, options, CFDs, and NDFs across all market conditions. Our growing team has deep expertise across pricing, structuring, risk, systems, and regulation.

B2C2 bridges the gap between traditional financial and digital assets, and is relied upon by brokerages, exchanges, banks, fund managers, and other institutions to provide 24/7 liquidity. Headquartered in London, with global offices in Paris, Jersey City, Tokyo, Singapore, and Luxembourg, our fast-growing team has expertise in traditional financial and crypto markets.

We pride ourselves on our company culture and ability to attract not only the top talent but the right people. If you are looking for a role in an exciting new industry, at a dynamic company please keep reading.

About the role:

We are seeking a highly specialised HFT System and Network Engineer to join our trading infrastructure team. In this role, you will bridge the gap between our cutting-edge AWS environments and physical colocation facilities. You will be responsible for the end-to-end optimisation of our global trading stack: minimising tail latency, optimising cross-region connectivity, and automating the deployment of performance-tuned "bare metal" and cloud instances. This is a high-impact role where your optimisations directly translate to our competitive edge in execution speed across both CeFi and DeFi exchanges.

Jobs to be Done:

• Low-latency Infrastructure Build: Architect and deploy HFT-grade stacks, focusing on low-latency connectivity to crypto exchanges and internal networking alike.
• 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.

Required Skills and experience:

Low-Latency DNA: Proven 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: Comfort working with high-performance NICs, low-latency switches (Arista/Cisco), and physical data centre requirements.

Execution-Driven: A clear, concise communicator who thrives in high-pressure environments and takes ownership of the entire infra lifecycle.

What we offer:

• 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 culture is a common denominator among the most successful companies and B2C2 is proud to be a values-based company.

• 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 through a healthy environment
• Risk Aware – Informed decision making and considered in our practices

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 actual or perceived race, colour, religion, sex (including pregnancy, sexual orientation and gender identity), national origin, age, disability or certain classifications based on 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.