{"id":3095878,"url":"https://alion.io/job/b2c2-it-hft-system-network-specialist-london","title":"IT - HFT System & Network Specialist - London","company":{"id":47488,"name":"B2C2","domain":"b2c2.com","url":"https://alion.io/company/b2c2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Support","role_family":"Support","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":41000,"max_usd":76000,"period":"year","method":"role_country_seniority_unknown","sample_n":152},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Bash","optional":false},{"name":"BGP","optional":false},{"name":"DeFi","optional":false},{"name":"Linux","optional":false},{"name":"Python","optional":false},{"name":"Terraform","optional":false}],"status":"live","first_seen_at":"2026-04-02T17:21:58Z","employer_posted_date":"2026-10-22","last_verified_at":"2026-10-30T20:36:57Z","board_verified":true,"closed_at":null,"days_open":211,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":209},"description":"About us:\nFounded 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.\nB2C2 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.\nWe 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.\nAbout the role: \nWe 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.\nJobs to be Done:\nLow-latency Infrastructure Build: Architect and deploy HFT-grade stacks, focusing on low-latency connectivity to crypto exchanges and internal networking alike.\nHybrid Cloud Optimisation: Manage the interplay between AWS servers and physical hardware in traditional colocation centers.\nSystem Performance Tuning: Implement deep-level Linux kernel optimisations to minimise jitter and improve performance\nNetwork Automation: Develop \"Zero-Touch\" deployment pipelines using Terraform and Ansible to ensure infrastructure is reproducible and error-free.\nPrecision Monitoring: Instrument the network for microsecond-level visibility, tracking packet loss, jitter, and retransmissions.\nConnectivity Management: Coordinate with exchanges and providers to manage cross-connects, LOAs, and high-speed transit lines.\nRequired Skills and experience:\nLow-Latency DNA: Proven experience in HFT or ultra-low latency environments where microseconds matter.\nLinux Mastery: Deep knowledge of system internals (CPU pinning, NUMA, kernel bypass) and performance profiling.\nAdvanced Networking: Expert understanding of BGP, Multicast, and AWS networking.\nAutomation-First Mindset: Proficiency in Python/Bash and Infrastructure as Code (Terraform) to manage complex global deployments.\nHardware Savvy: Comfort working with high-performance NICs, low-latency switches (Arista/Cisco), and physical data centre requirements.\nExecution-Driven: A clear, concise communicator who thrives in high-pressure environments and takes ownership of the entire infra lifecycle.\nWhat we offer:\nAn amazing global culture, who are ambitious, innovative and fun while working with the highest levels of honesty and integrity.\nTwo discretionary bonus awards a year.\nA range of benefits in line with local market practice.\nRegular fun events and activities, as well as Social Impact volunteering days. \nA strong culture is a common denominator among the most successful companies and B2C2 is proud to be a values-based company.\nAmbitious - Striving to make history through world class achievements\nInnovative - Forward looking in our solutions for clients and employees\nMeritocratic - Rewarding positive contribution across the organisation\nCollegiate - Achieving through teamwork through a healthy environment\nRisk Aware - Informed decision making and considered in our practices\nEqual Employment Opportunities Policy:\nB2C2 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.","description_format":"text","description_chars":4889,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Crypto Exchanges"],"lifecycle":[{"event":"open","at":"2026-10-22T16:10:44Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; Skilled Worker","cap_exempt":false,"checked_at":"2026-10-30T06:20:16+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.127,"p_room":0.28,"age_days":210,"expected_fill_days":24,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/b2c2-it-hft-system-network-specialist-london","json_url":"https://alion.io/job/b2c2-it-hft-system-network-specialist-london.json","meta":{"generated_at":"2026-10-30T21:23:59Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":11838,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":47488},"rest":"https://alion.io/mcp/rest/get_company?id=47488"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fb2c2-it-hft-system-network-specialist-london"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fb2c2-it-hft-system-network-specialist-london"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fb2c2-it-hft-system-network-specialist-london"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/b2c2-it-hft-system-network-specialist-london\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fb2c2-it-hft-system-network-specialist-london"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3095878}},{"tool":"search_jobs","arguments":{"company":"b2c2.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3095878},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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